SIVACON S8

Totally Integrated Power
SIVACON S8
Technical Planning Information · 10/2014
www.siemens.com/sivacon
SIVACON S8
Technical Planning Information
System-based power distribution
1
SIVACON S8 – System overview
2
Circuit-breaker design
3
Universal mounting design
4
In-line design, pluggable
5
Cubicles in fixed-mounted design
6
Reactive power compensation
7
Further planning notes
8
Conforming to standards and design-verified
9
Technical annex
10
Glossary and rated parameters
11
SIVACON S8 Planning Principles – 
1
Content
1System-based power distribution
4
2SIVACON S8 – System overview
8
2.1 System configuration and cubicle design
10
2.2 Main busbar, horizontal
15
2.3 Overview of mounting designs
16
2.4 Connection points for earthing
and short-circuit devices
18
3Circuit-breaker design
20
3.1 Cubicles with one ACB (3WL)
22
3.2 Cubicles with up to three ACB (3WL)
27
3.3 Cubicles with one MCCB (3VL)
28
3.4 Cubicles for direct supply and direct feeder
29
4
Universal mounting design
4.1Fixed-mounted design
with compartment door
4.2In-line switch-disconnectors
with fuses (3NJ62 / SASIL plus)
4.3Withdrawable design
32
35
36
36
5In-line design, pluggable
5.1In-line switch-disconnectors 3NJ62
with fuses
5.2 In-line switch-disconnectors SASIL plus
with fuses
48
51
6Cubicles in fixed-mounted design
6.1In-line design, fixed-mounted
6.2Fixed-mounted design with front cover
6.3Cubicle for customized solutions
54
54
57
61
7Reactive power compensation
7.1Configuration and calculation
7.2Separately installed compensation cubicles
64
66
68
8
Further planning notes
8.1Installation
8.2 Weights and power loss
8.3Environmental conditions
70
70
74
75
49
9Conforming to standards
and design-verified
9.1The product standard IEC 61439-2
9.2 Arc resistance
9.3Seismic safety and seismic requirements
9.4Declarations of conformity and certificates
78
78
79
81
83
10Technical annex
90
10.1Power supply systems according
to their type of connection to earth
90
10.2Loads and dimensioning
93
10.3 Degrees of protection according to IEC 60529
95
10.4 Forms of internal separation based on
IEC 61439-2
96
10.5 Operating currents of three-phase
asynchronous motors
97
10.6 Three-phase distribution transformers
98
11Glossary and rated parameters
100
11.1Terms and definitions
100
11.2Rated parameters
102
11.3Index of tables
104
11.4Index of figures
106
Chapter 1
System-based power
distribution
1 System-based power distribution
SIMARIS planning tools
When a power distribution concept is to be developed
which includes dimensioning of systems and devices, its
requirements and feasibility have to be matched by the end
user and the manufacturer. We have prepared this planning
manual for the SIVACON S8 low-voltage switchboard to
support you with this task. Three principles must be observed for optimal power distribution:
•Safety - integrated
•Economic efficiency - right from the start
•Flexibility – through modularity
The SIMARIS planning tools by Siemens provide efficient
support for dimensioning electric power distribution systems and determine the devices and distribution boards
required for them.
•SIMARIS design for network calculation and dimensioning
•SIMARIS project for determining the space requirements
of distribution boards and the budget, and for generating
specifications (bills of quantities)
•SIMARIS curves for visualising characteristic tripping
curves, cut-off current and let-through energy curves.
Comparable to a main artery, electric power supply constitutes the basis for reliable and efficient functioning of all
electrically operated facilities. Electrical power distribution
requires integrated solutions. Totally Integrated Power (TIP)
is a synonym for integrated electrical power distribution
(Fig. 1/1) in industrial applications, infrastructure projects
and buildings.
Further information about TIP:
www.siemens.com/tip
Further information about SIMARIS:
www.siemens.com/simaris
Automation
Operation
and
monitoring
Load
curves
Load
management
Process / Industrial automation
PROFINET
Forecast
Maintenance
Status
reporting/
Failure
managem.
Protocols
...
Cost center
Building automation
Energy automation
PROFIBUS
Power
Quality
Industrial Ethernet
Modbus
Power distribution
Renewables
Storage
technology
Medium-voltage
switchgear and
circuit protection
Transformer
Low-voltage switchboards
including circuit protection
and measuring systems
≤ 110 kV
Products, systems and solutions
Consulting,
planning
Engineering
Order,
delivery
Installation,
commissioning
Operation
Fig. 1/1: Totally Integrated Power (TIP) as holistic approach to electric power distribution
4
SIVACON S8 Planning Principles – System-based power distribution
Service,
modernisation
Low voltage
distribution
SIMARIS configuration tools
Tested safety
Configuring and dimensioning a low-voltage switchboard is
very complex. SIVACON S8 switchboards are configured by
experts, effectively supported by the SIMARIS configuration
tools during the stages of switchboard manufacture, operation and maintenance:
•SIMARIS configuration for tender drawing up, order
processing and manufacturing the SIVACON S8
switchboard
•SIMARIS control to efficiently create visualisation systems
for operating and monitoring the SIVACON S8
switchboard
SIVACON S8 is a synonym for safety at the highest level.
The low-voltage switchboard is a design-verified low-voltage switchgear and controlgear assembly in accordance
with IEC 61439-2. Design verification is performed by
testing. Its physical properties were verified in the test area
both for operating and fault situations. Maximum personal
safety is also ensured by a test verification under arcing
fault conditions in accordance with IEC/TR 61641.
Cost-efficient complete system
The SIVACON S8 low-voltage switchboard sets new standards worldwide as power distribution board or motor
control center (MCC) for industrial applications or in infrastructure projects (Fig. 1/2). The switchboard system up to
7,000 A for easy and integrated power distribution ensures
maximum personal safety and plant protection and provides many possibilities for use due to its optimal design. Its
modular construction allows the switchboard to be optimally matched to any requirement when the whole plant is
designed. Maximum safety and modern design now complement each other in an efficient switchboard.
1
2
Flexible solutions
3
The SIVACON S8 switchboard is the intelligent solution
which adapts itself to your requirements. The combination
of different mounting designs within one cubicle is unique.
The flexible, modular design allows functional units to be
easily replaced or added. All SIVACON S8 modules are
subject to a continuous innovation process and the complete system always reflects the highest level of technical
progress.
4
5
Further information about SIVACON S8:
www.siemens.com/sivacon
6
7
Motor control center
Power distribution from the power center to the main and subdistribution board
8
9
Chemical &
mineral oil industry
Power industry:
Power plants
and auxiliary systems
Capital goods industry:
Production-related systems
10
Infrastructure:
Building complexes
11
Fig. 1/2: SIVACON S8 for all areas of application
SIVACON S8 Planning Principles – System-based power distribution
5
Use
Advantages of modular design
SIVACON S8 can be used at all application levels in the
low-voltage network (Fig. 1/3):
•Power center or secondary unit substation
•Main switchboard or main distribution board
•Subdistribution board, motor control center, distribution
board for installation devices or industrial use
Every SIVACON S8 switchboard is manufactured of demand-oriented, standardised, and series-produced modules. All modules are tested and of a high quality. Virtually
every requirement can be satisfied due to the manifold
module combination possibilities. Adaptations to new
performance requirements can easily and rapidly be implemented by replacing or adding modules.
The advantages offered by this modular concept are clear:
•Verification of safety and quality for every switchboard
•Fulfilment of each and every requirement profile
combined with the high quality of series production
•Easy placement of repeat orders and short delivery time
Power center
Main distribution
board
Subdistribution
boards
Consumers load
Fig. 1/3: Use of SIVACON S8 in power distribution
6
SIVACON S8 Planning Principles – System-based power distribution
Motor
control
center (MCC)
M
M
M
M
Chapter 2
SIVACON S8 – System overview
2.1
2.2
2.3
2.4
System configuration and
cubicle design
Main busbar, horizontal
Overview of mounting designs
Connection points for earthing and
short-circuit devices
10
15
16
18
2 SIVACON S8 – System overview
The interaction of the components described below results
in an optimal low-voltage switchboard with advantages as
regards:
•Safety - integrated
•Economic efficiency - right from the start
•Flexibility – through modularity
Tab. 2/1: Technical data, standards and approvals for the SIVACON S8 switchboard
Standards and approvals
Standards and regulations
Power switchgear and controlgear assembly
(design verification)
IEC 61439-2
DIN EN 61439-2-2
VDE 0660-600-2
Test of internal fault behaviour (internal arc)
IEC/TR 61641
DIN EN 60439-1 Supplement 2
VDE 0660-500 Supplement 2
Induced vibrations
IEC 60068-3-3
IEC 60068-2-6
IEC 60068- 2-57
IEC 60980
KTA 2201.4
Uniform Building Code (UBC), Edition 1997 Vol. 2,
Ch. 19, Div. IV
Protection against electric shock
EN 50274 (VDE 0660-514)
Europe
Russia, Belarus, Kasakhstan
China
CE marking and EC Declaration of Conformity
EAC
CCC
Det Norske Veritas
Lloyds Register of Shipping
DNV GL Type Approval Certificate
LR Type Approval Certificate
Shell conformity
"DEP Shell"
Rated operating voltage (Ue)
Main circuit
Max. 690 V (rated frequency fn 50 Hz)
Creepage distances and
clearances
Rated impulse withstand voltage Uimp
8 kV
Rated
insulation voltage (Ui)
1,000 V
Degree of pollution
3
Rated current
Max. 7,010 A
Approvals
Technical data
Main busbars, horizontal
Rated device currents
Max. 330 kA
Rated short-time withstand current (Icw)
Max. 150 kA, 1s
Circuit-breakers 3WL/3V.
Max. 6,300 A
Cable feeders
Max. 630 A
Motor feeders
Max. 250 kW
Internal separation
IEC 61439-2
Form 1 to form 4
BS EN 61439-2
Up to Form 4 type 7
IP degree of protection
in accordance with IEC 60529:
Ventilated up to IP43
Non-ventilated IP54
Mechanical strength
IEC 62262
Up to IK10
Dimensions
Height (without base)
2,000, 2,200 mm
Height of base (optional)
100, 200 mm
Cubicle width
200, 350, 400, 600, 800, 850, 1,000, 1,200, 1,400 mm
Installation conditions
8
Rated peak withstand current (Ipk)
Depth (single-front)
500, 600, 800, 1,000, 1,200 mm
Indoor installation, ambient temperature in the
24-h mean
+ 35 °C
(-5 °C to + 40 °C)
SIVACON S8 Planning Principles – SIVACON S8 – System overview
1
1
11
2
2
21
10
3
12
9
20
4
17
3
13
16
19
5
18
8
15
14
6
4
7
6
7
5
Enclosure
1 Roof plate (IPX1)
2 Rear panel
3 Design side panel
4 Frame
5 Base panel
6 Base
7 Ventilated base compartment panel
8 Ventilated cubicle door
9 Compartment door
10 Head room door
8
Busbars
Internal separation
11 Main busbar (L1... L3, N) – top
18 Device compartment/busbar compartment
12 Main busbar (L1... L3, N) – rear top
19 Cubicle to cubicle
13 Main busbar (L1... L3, N) – rear bottom
20 Compartment to compartment
14 Main busbar (PE) – bottom
21 Cross-wiring compartment
15 Vertical distribution busbar system (L1... L3, N) device compartment
16 Vertical distribution busbar (PE) cable connection compartment
17 Vertical distribution busbar (N) cable connection compartment
9
10
11
Fig. 2/1: Cubicle design of SIVACON S8
SIVACON S8 Planning Principles – SIVACON S8 – System overview
9
2.1 System configuration and
cubicle design
When the system configuration is planned, the following
characteristics must be specified:
•Busbar position (top, rear top, rear bottom, or both rear
top and rear bottom)
•Single-front or double-front design
•Cable/busbar entry (from the top or bottom)
•Connection in cubicle (front or rear)
Tab. 2/2: Schematic overview of switchboard configurations for SIVACON S8
Busbar position
Rear
Top
Top
B
Bottom
Top and bottom
B
B
B
Single-front / double-front design
Single front
Double front
B
B
A Side of connection
B
10
Operating panel
SIVACON S8 Planning Principles – SIVACON S8 – System overview
B
B
These characteristics depend on the type of installation
among other things:
•Stand-alone
•At the wall (only for single-front design)
•Back to back (only for single-front design)
These determinations allow to specify cubicle design in
more detail (Fig. 2/1, Tab. 2/2 and Tab. 2/3). Further information about the switchboard installation can be found in
Chapter 8 (Further planning notes).
1
2
Cable/busbar entry
From the bottom
From the top
3
4
B
B
B
B
5
6
Connection in cubicle
Front
Rear
B
B
A
A
7
8
A
B
9
10
A
Side of connection
B
Operating panel
11
SIVACON S8 Planning Principles – SIVACON S8 – System overview
11
Tab. 2/3: Cubicle types and busbar arrangement
Top busbar position
Busbar system
Cubicle design
0
50
N L3 L2 L1
Busbar position
Top
Rated current
Max. 3,270 A
Cable/busbar entry
Bottom
Connection in cubicle
Front
PE
500
0
80
N L3 L2 L1
Busbar position
Top
Rated current
Max. 3,270 A
Cable/busbar entry
Top
Connection in cubicle
Front or rear
PE
PE
800
0
80
N L3 L2 L1
Busbar position
Top
Rated current
Max. 6,300 A
Cable/busbar entry
Bottom
Connection in cubicle
Front
N L3 L2 L1
PE
800
0
40
0
80
N L3 L2 L1
Busbar position
Top
Rated current
Max. 6,300 A
Cable/busbar entry
Top
Connection in cubicle
Front or rear
N L3 L2 L1
PE
PE
1,200
Device/functional
compartment
12
Busbar
compartment
Cable / busbar
connection
compartment
SIVACON S8 Planning Principles – SIVACON S8 – System overview
Cross-wiring
compartment
Operating
panels
Rear busbar position
Busbar system
1
Cubicle design
0
60
PE
Busbar position
Rear
N
Top or bottom
L2
L1
2
L3
Top and bottom
Rated current
Max. 4,000 A
Cable/busbar entry
Bottom or top
Connection in cubicle
Front
L1
L2
L3
N
3
PE
600
0
80
4
PE
N
Busbar position
Rear
L1
L2
Top or bottom
Rated current
Max. 7,010 A
Cable/busbar entry
Bottom or top
Connection in cubicle
Front
L3
L1
5
L2
L3
N
PE
800
6
00
1,0
PE
Rear
Busbar position
PE
N
L1
Top or bottom
L2
L3
Top and bottom
Rated current
Max. 6,300 A
Cable/busbar entry
Bottom or top
Connection in cubicle
Front
7
L1
L2
L3
N
PE
PE
8
1,000
00
1,2
PE
PE
N N
Busbar position
Rear
L1 L1
9
L2 L2
Top or bottom
Rated current
Max. 7,010 A
Cable/busbar entry
Bottom, top
Connection in cubicle
Front
L3 L3
L1 L1
L2 L2
L3 L3
10
N N
PE
PE
1,200
Device/functional
compartment
Busbar
compartment
Cable / busbar
connection
compartment
Cross-wiring
compartment
11
Operating
panels
SIVACON S8 Planning Principles – SIVACON S8 – System overview
13
Tab. 2/4: Cubicle dimensions
Cubicle height
Frame
2,000, 2,200 mm
Base
Without, 100, 200 mm
Cubicle width
- Cubicle type
- Rated device current
- Connecting position and/or cable/busbar entry
Dependent of:
Cubicle depth
Main busbar
Location
Type
Top
Single front
Rear
Double front
1)
Frame depth
Rated current
Rear
Front connection
Rear connection
Entry from the
bottom
Entry from the top
3,270 A
500, 800 mm
800 mm
800 mm
6,300 A
800, 1,000 mm
1,200 mm
1,200 mm
4,000 A
600 mm
600 mm
-
7,010 A
800 mm
800 mm
-
4,000 A
1,000 mm
1,000 mm
-
1,200 mm
1,200 mm
-
7,010 A
1)
Frame height 2,200 mm
The cubicle dimensions listed in Tab. 2/4 do not factor in
the enclosure parts and no outer built-on parts.
For the dimensions of the cubicles' enclosure parts, please
refer to Fig. 2/2. For degrees of protection IPX1, IPX2 and
IPX3, additional ventilation roof panels are mounted on the
cubicle.
The door stop can easily be changed later. The door hinges
allow for a door opening angle of up to 180° in case of
single installation of the switchboard and at least 125°
when cubicles are lined up. For more details, please refer to
Chapter 8 (Further planning notes). The condition of surfaces of structural and enclosure parts is described in
Tab. 2/5.
The dimensions of the enclosure parts are within the
required minimum clearances for erecting the switchboard.
Doors can be fitted so that they close in escape direction.
Tab. 2/5: Surface treatment
9 mm
Surface treatment
25 mm
Side panel
with
design strip
Side panel
without
design strip
Depth
Rear panel
Frame components
Sendzimir-galvanised
Enclosure
Sendzimir-galvanised / powder-coated
Doors
Powder-coated
Copper bars
Bare copper,
optionally silver-plated,
optionally tin-plated
Colour
Door
25 mm
45 mm
Width
Powder-coated
components
(layer thickness 100 ± 25 μm)
Design components
Fig. 2/2: Dimensions of enclosure parts
14
SIVACON S8 Planning Principles – SIVACON S8 – System overview
RAL7035, light grey (in accordance
with DIN 43656) or upon request
Blue Green Basic
2.2 Main busbar, horizontal
Tab. 2/6 lists the rating data for the two possibilities how to
position the main busbar – top or rear – (Fig. 2/3). Chapter
10 describes how ambient temperatures must be observed
in respect of the current carrying capacity.
Tab. 2/6: Rating of the main busbar
Top busbar position
Rated current In at 35 °C ambient
temperature
Ventilated
Non-ventilated
Rated short-time
withstand current
Icw (1 s)
1,190 A
965 A
35 kA
1,630 A
1,310 A
50 kA
1,920 A
1,480 A
65 kA
2,470 A
1,870 A
85 kA
3,010 A
2,250 A
100 kA
3,270 A
2,450 A
100 kA
3,700 A 1)
3,000 1)
100 kA
4,660 A 1)
3,680 A 1)
100 kA
5,620 A 1)
4,360 A 1)
150 kA
1)
1)
150 kA
6,300 A
4,980 A
1
2
3
4
1)
If circuit-breakers with a very high power loss are used, the
following correction factors must be applied:
3WL1350: 0.95
3WL1363: 0.88
Rear busbar position
Rated current In at 35 °C ambient
temperature
Ventilated
Non-ventilated
Rated short-time
withstand current
Icw (1 s)
1,280 A
1,160 A
50 kA
1,630 A
1,400 A
65 kA
2,200 A
1,800 A
65 kA
2,520 A
2,010 A
85 kA
2,830 A
2,210 A
100 kA
3,170 A
2,490 A
100 kA
4,000 A
3,160 A
100 kA
4,910 A
3,730 A
100 kA
5,340 A
4,080 A
100 kA
5,780 A
4,440 A
100 kA
7,010 A
5,440 A
150 kA
5
6
7
8
Fig. 2/3: Variable busbar position for SIVACON S8
9
10
11
SIVACON S8 Planning Principles – SIVACON S8 – System overview
15
2.3 Overview of mounting designs
Tab. 2/7: Basic data of the different mounting designs
16
Circuit-breaker design
Universal mounting design
3NJ6 in-line switch-disconnector design
Withdrawable design
Withdrawable design
Fixed mounted design
Withdrawable design
Fixed-mounted design with compartment doors
Plug-in design
Plug-in design
Functions
Incoming unit
Outgoing unit
Coupler
Cable feeders
Motor feeders (MCC)
Cable feeders
Rated current In
Max. 6,300 A
Max. 630 A
Max. 250 kW
Max. 630 A
Connection type
Front and rear side
Front and rear side
Front side
Cubicle width
400, 600, 800, 1,000, 1,200 mm
600, 1,000, 1,200 mm
1,000, 1,200 mm
Internal separation
Form 1, 2b, 3a, 4b, 4 type 7 (BS)
Form 3b, 4a, 4b, 4 type 7 (BS)
Form 3b, 4b
Busbar position
Rear, top
Rear, top
Rear, top
SIVACON S8 Planning Principles – SIVACON S8 – System overview
1
2
3
4
5
6
7
8
Fixed-mounted design
3NJ4 in-line switchdisconnector design
Reactive power compensation
Fixed-mounted design with front covers
Fixed mounted design
Fixed mounted design
Cable feeders
Cable feeders
Central compensation of reactive power
Max. 630 A
Max. 630 A
Non-choked 600 kvar
Choked 500 kvar
Front side
Front side
Front side
1,000, 1,200 mm
600, 800, 1,000 mm
800 mm
Form 1, 2b, 3b, 4a, 4b
Form 1, 2b
Form 1, 2b
Rear, top
Rear
Rear, top, without
SIVACON S8 Planning Principles – SIVACON S8 – System overview
9
10
11
17
2.4 Connection points for earthing
and short-circuit devices
Short-circuiting and earthing devices (SED)
For short-circuiting and earthing, short-circuiting and
earthing devices (SED) are available. For mounting the SED,
appropriate fastening points are fitted at the points to be
earthed. To accommodate the SED for the main busbar, a
cubicle for customized solutions is inserted (see Chapter
6.3: Cubicle for customized solutions). The cubicle widths
are given in Tab. 2/8.
Central earthing point (CEP) and main earthing busbar
(MEB)
When voltage sources, which are located far apart, are
earthed, for example secondary unit substation and
standby generator set, the separate earthing of their neutral points results in compensating currents through foreign
conductive building structures. Undesired electro-magnetic
interference is created, caused by the building currents on
the one hand and the lack of summation current in the
respective cables on the other.
The central earthing point can only be used in the
power supply system L1, L2, L3, PEN (insulated) + PE.
To implement the central earthing point (CEP) - with or
without a main earthing busbar (MEB) - a cubicle for
customized solutions is inserted (see Chapter 6.3: Cubicle
for customized solutions).
CEP design
The CEP is designed as a bridge between the separately
wired (insulated) PEN and the PE conductor of the switchboard. Measuring current transformers can be mounted on
the bridge for residual current measurements. In order to
be able to remove the current transformer in case of a
defect, a second, parallel bridge is provided. This prevents
cancelling the protective measure due to a missing connection between the separately wired PEN and PE conductor.
A mounting plate in the cubicle is provided for placing the
residual-current monitors. The cubicle widths are given in
Tab. 2/8.
MEB design
18
If the requirement is parallel operation of several voltage
sources and if building currents shall be reduced as far as
possible, the preferable technical solution is implementing
the central earthing point (CEP). In this case, the neutral
points of all voltage sources are connected to the system
protective conductor / system earth at a single point only.
The effect is that despite potential differences of the
neutral points, building currents cannot be formed any
more.
In addition to the central earthing point, the MEB can
optionally be mounted as a horizontal bar. This connecting
bar is separately installed in the cubicle and rigidly connected to the PE conductor. Depending on how the cable is
entered, the MEB is installed at the top or bottom of the
cubicle. The cubicle widths can be found in Tab. 2/8 and
information about the cable terminals can be found in
Tab. 2/9.
Tab. 2/8: Cubicle widths for earthing short-circuit points
Tab. 2/9: Cable terminal for the main earthing busbar
Earthing and shortcircuit points
Cubicle widths
Cubicle width
Max. number of cables connectible with
cable lug DIN 46235 (screw)
Short-circuiting and
earthing devices (SED)
400 mm (200 mm as cubicle
extension)
600 mm
10 x 185 mm2 (M10) + 12 x 240 mm2 (M12) 1)
Central earthing point
(CEP)
600 mm, 1,000 mm (200 mm as
cubicle extension)
1,000 mm
20 x 185 mm2 (M10) + 22 x 240 mm2 (M12) 1)
Main earthing busbar
(MEB)
600, 1,000 mm
1) 300 mm² cable lugs can be used with M12 screw,
but this cable lug does not comply with DIN 46235, although it is supplied by some manufacturers.
SIVACON S8 Planning Principles – SIVACON S8 – System overview
Chapter 3
Circuit-breaker design
3.1
3.2
3.3
3.4
Cubicles with one ACB (3WL)
Cubicles with up to three ACB (3WL)
Cubicles with one MCCB (3VL)
Cubicles for direct supply
and direct feeder
22
27
28
29
3 Circuit-breaker design
The cubicles for 3W. and 3V. circuit-breakers ensure both
personal safety and long-term operational safety (Fig. 3/1).
The incoming, outgoing and coupling units in circuit-breaker design are equipped with 3W. air circuit-breakers (ACB) in withdrawable or fixed-mounted design or
alternatively with 3V. moulded-case circuit-breakers (MCCB)
(Tab. 3/1).
Fig. 3/1: Cubicles in circuit-breaker design
20
SIVACON S8 Planning Principles – Circuit-breaker design
The cubicle dimensions are tailored to the circuit-breaker
sizes and can be selected according to the individual requirements. The circuit-breaker design provides optimal
connect conditions for every nominal current range. In
addition to cable connections, the system also provides
design-verified connections to SIVACON 8PS busbar trunking systems.
Tab. 3/1: General cubicle characteristics in circuit-breaker design
Application
range
- Incoming circuit-breakers
- Coupling circuit-breakers (longitudinal and transverse couplers)
- Outgoing circuit-breakers
- Direct incoming/outgoing feeders (without circuit-breakers)
Degrees of protection
- Up to IP43 - IP54 Ventilated
Non-ventilated
Form of internal separation
- Form 1, 2b - Form 3a, 4b 1) Door cubicle high
Door divided in 3 parts
Design
options
- Air circuit-breaker (ACB) in fixed-mounted or withdrawable design 2)
- Moulded-case circuit-breaker (MCCB) in fixed-mounted design 3)
1
2
1)
Also form 4b type 7 in acc. with BS EN 61439-2 possible
Information about 3WT circuit-breakers is available from your Siemens contact
3) Information about moulded-case circuit-breakers in plug-in/withdrawable design is available from your Siemens contact
2)
3
The circuit-breaker cubicles allow the installation of a
current transformer (L1, L2 and L3) at the customer connection side. Information about the installation of additional transformers is available from your Siemens contact.
4
Cubicle with forced cooling
The circuit-breaker cubicles with forced cooling are
equipped with fans (Fig. 3/2). Controlled fans are installed
in the cubicle front below the circuit-breaker. The forced
cooling makes for an increase of the rated current of the
circuit-breaker cubicle. The other cubicle characteristics are
identical to the cubicle without forced cooling.
5
6
The fan control comes completely configured. No further
settings are required upon start-up of the switchboard. The
fans are dimensioned such that the required cooling is still
ensured if a fan fails. Failure of the fan and non-permissible
temperature rises are signalled. Forced cooling is available
for selected ACB (3WL) in withdrawable design.
7
The use of fans brings about additional noise emission.
Under normal operating conditions, the noise emission
may be 85 dB at the maximum. Higher noise emissions
only occur in the case of a fault.
8
Observing local regulations on noise protection and occupational safety and health is mandatory. Rating data for
cubicles with forced cooling is available from your
Siemens contact.
9
Fig. 3/2: Forced cooling in a circuit-breaker cubicle
10
11
SIVACON S8 Planning Principles – Circuit-breaker design
21
3.1 Cubicles with one ACB (3WL)
The widths for the different cubicle types are listed by ACB
type in Tab. 3/2 to Tab. 3/4.
Tab. 3/2: Cubicle dimensions for top busbar position
Cubicle type
Nominal
device
current
ACB type
Incoming / outgoing unit
Top busbar position,
cable / busbar entry from the
top or bottom
The position of the connecting bars is identical for cable entry
from the top or bottom
Busbar connection
4-pole
3-pole
4-pole
630 A
400/600
600
-
-
3WL1108
800 A
400/600
600
-
-
3WL1110
1,000 A
400/600
600
-
-
3WL1112
1,250 A
400/600
600
-
-
3WL1116
1,600 A
400/600
600
400/600
600
3WL1120
2,000 A
400/600
600
400/600
600
3WL1220
2,000 A
600/800
800
600/800
800
3WL1225
2,500 A
600/800
800
600/800
800
3WL1232
3,200 A
600/800
800
600/800
800
3WL1340
4,000 A 2)
800
1,000
800
1,000
3WL1350 1)
5,000 A 2)
-
-
1,000
1,000
3WL1363 1)
6,300 A 2)
-
-
1,000
1,000
3-pole
4-pole
3WL1106
630 A
600
800
-
-
3WL1108
800 A
600
800
-
-
3WL1110
1,000 A
600
800
-
-
3WL1112
1,250 A
600
800
-
-
3WL1116
1,600 A
600
800
-
-
3WL1120
2,000 A
600
800
-
-
3WL1220
2,000 A
800
1,000
-
-
3WL1225
2,500 A
800
1,000
-
-
3WL1232
3,200 A
3WL1340
3WL1350
1)
3WL1363
1)
1)
Withdrawable design, frame height 2,200 mm
2) Main busbar up to 6,300 A
22
Cable connection
3-pole
3WL1106
Longitudinal coupler
Top busbar position
Cubicle width in mm
SIVACON S8 Planning Principles – Circuit-breaker design
800
1,000
-
-
4,000 A
2)
1,000
1,200
-
-
5,000 A
2)
1,200
1,200
-
-
6,300 A
2)
1,200
1,200
-
-
Tab. 3/3: Cubicle dimensions for rear busbar position
Cubicle type
Nominal
device
current
ACB type
Incoming / outgoing unit
1 busbar system in the cubicle:
rear top busbar position and
cable / busbar entry from the
bottom
Cubicle width in mm
Cable connection
Busbar connection
3-pole
4-pole
3-pole
4-pole
3WL1106
630 A
400/600
600
-
-
3WL1108
800 A
400/600
600
-
-
3WL1110
1,000 A
400/600
600
-
-
3WL1112
1,250 A
400/600
600
-
-
3WL1116
1,600 A
400/600
600
400/600
600
3WL1120
2,000 A
400/600
600
400/600
600
or
3WL1220
2,000 A
600/800
800
600/800
800
rear bottom busbar position
and
cable / busbar entry from the
top
3WL1225
2,500 A
600/800
800
600/800
800
3WL1232
3,200 A
600/800
800
600/800
800
3WL1340
4,000 A
1,000
1,000
8001)/1,000
1,000
2)
-
-
1,000
1,000
3WL1363 1)
6,300 A 2)
-
-
1,000
1,000
3WL1106
630 A
400/600
600
-
-
3WL1108
800 A
400/600
600
-
-
3WL1110
1,000 A
400/600
600
-
-
3WL1112
1,250 A
400/600
600
-
-
3WL1350
1 busbar system in the cubicle:
rear bottom busbar position
and
cable / busbar entry from the
bottom
1)
5,000 A
3WL1116
1,600 A
400/600
600
400/600
600
3WL1120
2,000 A
400/600
600
400/600
600
3WL1220
2,000 A
600/800
800
600/800
800
3WL1225
2,500 A
600/800
800
600/800
800
3WL1232
3,200 A
600/800
800
600/800
800
3WL1340
4,000 A
-
-
8003)/1,000
1,000
3-pole
4-pole
3WL1106
630 A
600
600
-
-
3WL1108
800 A
600
600
-
-
3WL1110
1,000 A
600
600
-
-
3WL1112
1,250 A
600
600
-
-
3WL1116
1,600 A
600
600
-
-
rear top busbar position
3WL1120
2,000 A
600
600
-
-
or
3WL1220
2,000 A
800
800
-
-
3WL1225
2,500 A
800
1,000
-
-
3WL1232
3,200 A
800
1,400
-
-
3WL1340
4,000 A
1,000
1,000
-
-
3WL1350 1)
5,000 A 2)
1,400
1,400
-
-
3WL1363 1)
6,300 A 2)
1,400
1,400
-
-
or
rear top busbar position and
cable / busbar entry from the
top
Longitudinal coupler
1 busbar system in the cubicle:
rear bottom busbar position
1
2
3
4
5
6
7
8
9
10
1)
Withdrawable design, frame height 2,200 mm
2) Main busbar up to 7,010 A
3) Frame height 2,200 mm
11
SIVACON S8 Planning Principles – Circuit-breaker design
23
Tab. 3/4: Cubicle dimensions for rear busbar position with two busbar systems in the cubicle
Cubicle type
ACB type
Nominal
device
current
Incoming / outgoing unit
2 busbar systems in the
cubicle:
rear top busbar position and
cable / busbar entry from the
bottom
or
rear bottom busbar position
and
cable / busbar entry from the
top
2 busbar systems in the
cubicle:
rear bottom busbar position
and
cable / busbar entry from the
bottom
or
rear top busbar position and
cable / busbar entry from the
top
Busbar connection
3-pole
4-pole
3-pole
4-pole
630 A
400/600
600
-
-
3WL1108
800 A
400/600
600
-
-
3WL1110
1,000 A
400/600
600
-
-
3WL1112
1,250 A
400/600
600
-
-
3WL1116
1,600 A
400/600
600
400/600
600
3WL1120
2,000 A
400/600
600
400/600
600
3WL1220
2,000 A
600/800
800
600/800
800
3WL1225
2,500 A
600/800
800
600/800
800
3WL1232
3,200 A
600/800
800
600/800
800
3WL1340
4,000 A
1,000
1,000
8001)/1,000
1,000
3WL1106
630 A
400/600
600
-
-
3WL1108
800 A
400/600
600
-
-
3WL1110
1,000 A
400/600
600
-
-
3WL1112
1,250 A
400/600
600
-
-
3WL1116
1,600 A
400/600
600
400/600
600
3WL1120
2,000 A
400/600
600
400/600
600
3WL1220
2,000 A
600/800
800
600/800
800
3WL1225
2,500 A
600/800
800
600/800
800
3WL1232
3,200 A
600/800
800
600/800
800
3WL1340
4,000 A
-
-
8001)/1,000
1,000
3-pole
4-pole
3WL1106
630 A
600
600
-
-
3WL1108
800 A
600
600
-
-
2 busbar systems in the
cubicle:
3WL1110
1,000 A
600
600
-
-
3WL1112
1,250 A
600
600
-
-
rear top busbar position
3WL1116
1,600 A
600
600
-
-
3WL1120
2,000 A
600
600
-
-
3WL1220
2,000 A
800
800
-
-
3WL1225
2,500 A
800
800
-
-
3WL1232
3,200 A
800
800
-
-
3WL1340
4,000 A
1,000
1,000
-
-
3-pole
4-pole
or
rear bottom busbar position
Transverse coupler
3WL1106
630 A
400/600
600
-
-
3WL1108
800 A
400/600
600
-
-
2 busbar systems in the
cubicle:
3WL1110
1,000 A
400/600
600
-
-
3WL1112
1,250 A
400/600
600
-
-
rear top busbar position
3WL1116
1,600 A
400/600
600
-
-
3WL1120
2,000 A
400/600
600
-
-
3WL1220
2,000 A
600/800
800
-
-
3WL1225
2,500 A
600/800
800
-
-
3WL1232
3,200 A
600/800
800
-
-
3WL1340
4,000 A
1,000
1,000
-
-
and
rear bottom busbar position
24
Cable connection
3WL1106
Longitudinal coupler
1)
Cubicle width in mm
Frame height 2,200 mm
SIVACON S8 Planning Principles – Circuit-breaker design
Cable and busbar connection
Short-circuiting and earthing device (SED)
The number of connectible cables, as stated in Tab. 3/5,
may be restricted by the available roof/floor panel openings
and/or door installations. The position of the connecting
bars is identical for front or rear connection in the cubicle.
For short-circuiting and earthing, short-circuiting and
earthing devices (SED) are available for the circuit-breaker
cubicle. Suitable mounting points are affixed to the points
to be earthed, which ease SED installation.
1
Connection to the SIVACON 8PS busbar trunking system is
effected by means of an installed busbar trunking connector. The SIVACON S8 connecting system is located completely within the cubicle. The busbars can be connected
both from the top and from the bottom, thus allowing
flexible connection. The factory-provided copper plating
guarantees high short-circuit strength, which is verified by
a design test, as is the temperature rise limits.
2
3
Tab. 3/5: Cable connection for cubicles with 3WL
Cable lug DIN 46235
(240 mm2, M12) 1)
4
Max. number of cables connectible per phase
dependent on breaker size and rated current
3WL11
up to 1,000 A
3WL11
1,250 to 2,000 A
3WL12
up to 1,600 A
3WL12
2,000 to 3,200 A
3WL13 2)
up to 4,000 A
4
6
6
12
14
5
1)It
is possible to use 300 mm2 cable lugs with an M12 screw, but this cable lug is not in compliance with DIN 46235, although it is supplied by some manufacturers
2) 5,000 A and 6,300 A circuit-breakers with busbar connection
6
7
8
9
10
11
SIVACON S8 Planning Principles – Circuit-breaker design
25
Rated currents
Tab. 3/6 states the rated currents for the different configurations dependent on the cubicle type.
Tab. 3/6: Rated currents for cubicles with one 3WL
Rated current at 35 °C ambient temperature
ACB type
3WL1106
630 A
Top busbar position
Rear busbar position
Cable connection
Cable entry from the bottom
Cable entry from the top
Non-ventilated
Ventilated
Non-ventilated
Ventilated
Non-ventilated
Ventilated
630 A
630 A
630 A
630 A
630 A
630 A
3WL1108
800 A
800 A
800 A
800 A
800 A
800 A
800 A
3WL1110
1,000 A
930 A
1,000 A
1,000 A
1,000 A
1,000 A
1,000 A
3WL1112
1,250 A
1,160 A
1,250 A
1,170 A
1,250 A
1,020 A
1,190 A
3WL1116
1,600 A
1,200 A
1,500 A
1,410 A
1,600 A
1,200 A
1,360 A
3WL1120
2,000 A
1,550 A
1,780 A
1,500 A
1,840 A
1,480 A
1,710 A
3WL1220
2,000 A
1,630 A
2,000 A
1,630 A
1,920 A
1,880 A
2,000 A
3WL1225
2,500 A
1,960 A
2,360 A
1,950 A
2,320 A
1,830 A
2,380 A
3WL1232
3,200 A
2,240 A
2,680 A
2,470 A
2,920 A
1,990 A
2,480 A
3WL1340
4,000 A
2,600 A
3,660 A
2,700 A
3,700 A
2,430 A
3,040 A
ACB type
3WL1116
Nominal
device
current
1,600 A
Top busbar position
Busbar entry from the bottom,
SIVACON 8PS system LD or LX
Busbar entry from the top,
SIVACON 8PS system LD
Busbar entry from the top,
SIVACON 8PS system LX
Non-ventilated
Ventilated
Non-ventilated
Ventilated
Non-ventilated
Ventilated
1,200 A
1,500 A
1,420 A
1,580 A
1,360 A
1,600 A
3WL1120
2,000 A
1,550 A
1,780 A
1,600 A
1,790 A
1,360 A
1,630 A
3WL1220
2,000 A
1,630 A
2,000 A
1,630 A
2,000 A
1,630 A
2,000 A
3WL1225
2,500 A
1,960 A
2,360 A
2,030 A
2,330 A
1,820 A
2,310 A
3WL1232
3,200 A
2,240 A
2,680 A
2,420 A
2,720 A
2,090 A
2,640 A
3WL1340
4,000 A
2,600 A
3,660 A
2,980 A
3,570 A
3,480 A
3,820 A
3WL1350
5,000 A
3,830 A
4,450 A
3,860 A
4,460 A
3,830 A
4,450 A
3WL1363
6,300 A
4,060 A 1)
4,890 A 1)
-
-
4,530 A
5,440 A
ACB type
3WL1116
Nominal
device
current
1,600 A
Rear busbar position
Busbar entry from the bottom,
SIVACON 8PS system LD or LX
Busbar entry from the top,
SIVACON 8PS system LD
Busbar entry from the top,
SIVACON 8PS system LX
Non-ventilated
Ventilated
Non-ventilated
Ventilated
Non-ventilated
Ventilated
1,410 A
1,600 A
1,440 A
1,550 A
1,250 A
1,410 A
3WL1120
2,000 A
1,500 A
1,840 A
1,590 A
1,740 A
1,310 A
1,570 A
3WL1220
2,000 A
1,630 A
1,920 A
1,630 A
1,920 A
1,660 A
1,970 A
3WL1225
2,500 A
1,950 A
2,320 A
2,130 A
2,330 A
1,940 A
2,230 A
3WL1232
3,200 A
2,470 A
2,920 A
2,440 A
2,660 A
2,160 A
2,530 A
3WL1340
4,000 A
2,700 A
3,700 A
2,750 A
3,120 A
2,700 A
3,110 A
3WL1350
5,000 A
3,590 A
4,440 A
3,590 A
4,440 A
3,580 A
4,490 A
3WL1363
6,300 A
3,710 A 1)
4,780 A 1)
-
-
3,710 A
4,780 A
ACB type
3WL1106
Nominal
device
current
630 A
Top busbar position
Rear busbar position
Longitudinal coupler
Longitudinal coupler
Transverse coupler
Non-ventilated
Ventilated
Non-ventilated
Ventilated
Non-ventilated
Ventilated
630 A
630 A
630 A
630 A
630 A
630 A
3WL1108
800 A
800 A
800 A
800 A
800 A
800 A
800 A
3WL1110
1,000 A
1,000 A
1,000 A
1,000 A
1,000 A
1,000 A
1,000 A
3WL1112
1,250 A
1,160 A
1,250 A
1,140 A
1,250 A
1,170 A
1,250 A
3WL1116
1,600 A
1,390 A
1,600 A
1,360 A
1,600 A
1,410 A
1,600 A
3WL1120
2,000 A
1,500 A
1,850 A
1,630 A
1,910 A
1,500 A
1,840 A
3WL1220
2,000 A
1,630 A
1,930 A
1,710 A
2,000 A
1,630 A
1,920 A
3WL1125
2,500 A
1,960 A
2,360 A
1,930 A
2,440 A
1,950 A
2,320 A
3WL1132
3,200 A
2,200 A
2,700 A
2,410 A
2,700 A
2,470 A
2,920 A
3WL1140
4,000 A
2,840 A
3,670 A
2,650 A
3,510 A
2,700 A
3,700 A
3WL1350
5,000 A
3,660 A
4,720 A
3,310 A
4,460 A
-
-
3WL1363
6,300 A
3,920 A
5,180 A
3,300 A
5,060 A
-
-
1)
26
Nominal
device
current
SIVACON 8PS system LX
SIVACON S8 Planning Principles – Circuit-breaker design
3.2 Cubicles with up to three ACB
(3WL)
To allow space-saving installation, cubicles with up to three
circuit-breakers as incoming and/or outgoing circuit-breakers can be implemented for specific ACB types (3WL).
Cubicle dimensions and cable connection
In a cubicle with three circuit-breakers, the cables are
connected from the rear. A variant with cable connection
from the front does not offer any space advantages because of the required connection compartment. For this
application, cubicles with one circuit-breaker are used. The
three mounting slots can be designed independently of
each other either with a circuit-breaker, as device compartment or as direct incoming feeder. Cubicle dimensions and
information about the cable connection are given in
Tab. 3/7 and Tab. 3/8. The number of connectible cables
may be restricted by the available roof/floor panel openings
and/or door installations.
Rated currents
Tab. 3/7: Dimensions for cubicles with 3 ACB of type 3WL
ACB type
Nominal
device
current
Cubicle width in mm
3-pole
4-pole
Cubicle
depth
in mm
3WL1106
630 A
600
600
800
3WL1108
800 A
600
600
800
3WL1110
1,000 A
600
600
800
3WL1112
1,250 A
600
600
1,200 1)
3WL1116
1,600 A
600
600
1,200 1)
1)
2
Main busbar up to 6,300 A
Frame height for cubicles with up to three ACB is
2,200 mm.
3
Tab. 3/8: Cable connection for direct incoming/outgoing feeders
Cable lug DIN 46235
(240 mm2, M12) 1)
The up to three circuit-breakers in the cubicle interact.
Dependent on the utilisation of the individual circuit-breakers and the current distribution within the cubicle, different
rated currents result for the individual circuit-breakers. Tab.
3/9 states the maximum rated currents for three concrete
cases of current distribution in the cubicle:
•Variant A: same rated current for all three mounting slots
•Variant B: highest current for top mounting slot, lowest
current for bottom mounting slot
•Variant C: highest current for bottom mounting slot,
lowest current for top mounting slot
1
Max. number of cables connectible
per phase dependent on cubicle
depth
800 mm
1,200 mm
4
6
4
1)
It is possible to use 300 mm2 cable lugs with an M12 screw,
but this cable lug is not in compliance with DIN 46235, although it is
supplied by some manufacturers
5
6
Information about an individual distribution of the rated
currents in the cubicle is available from your Siemens
contact.
7
8
Tab. 3/9: Rated currents for special load cases of a circuit-breaker cubicle with three 3WL11 circuit-breakers in the cubicle
Rated current at 35 °C ambient temperature
Nominal
device
current
Cubicle
depth
Mounting
slot
Top
Up to
1,000 A
800 mm
Up to
1,600 A
1,200 mm
Variant A
Variant B
9
Variant C
Nonventilated
Ventilated
Nonventilated
Ventilated
Nonventilated
Ventilated
710 A
960 A
900 A
1,000 A
0
900 A
Center
710 A
955 A
905 A
1,000 A
980 A
1,000 A
Bottom
710 A
955 A
0
905 A
925 A
1,000 A
Top
1,030 A
1,350 A
1,220 A
1,600 A
305 A
910 A
Center
1,030 A
1,350 A
1,230 A
1,600 A
1,200 A
1,440 A
Bottom
1,040 A
1,350 A
231 A
300 A
1,310 A
1,600 A
SIVACON S8 Planning Principles – Circuit-breaker design
10
11
27
3.3 Cubicles with one MCCB (3VL)
The widths for the different cubicle types are listed by
MCCB type in Tab. 3/10. Information about cable connection and rated currents for the different configurations of
MCCB, busbar position, cable entry and ventilation conditions is given in Tab. 3/11 and Tab. 3/12.
Tab. 3/10: Widths for incoming/outgoing feeder cubicles with MCCB
Cubicle widths for
3VL5763 (630 A), 3VL6780 (800 A), 3VL7712 (1,250 A), 3VL8716 (1,600 A)
Top busbar position
Rear top busbar position
Rear bottom busbar position
Cable entry from the top or bottom
Cable entry from the
top
Cable entry from the
top
Cable entry from the
bottom
Cable entry from the
bottom
The position of the connecting bars is identical
Two main busbar systems in the cubicle are also possible
for cable entry from the top or bottom
3-pole: cubicle width 400 mm
3-pole: cubicle width 400 mm
4-pole: cubicle width 400 mm
4-pole: cubicle width 600 mm
Tab. 3/11: Cable connection for cubicles with MCCB of type 3VL
Cable lug DIN 46235
(240 mm2, M12) 1)
Max. number of cables connectible
per phase dependent on rated current
Up to 800 A
From 1,250
to 1,600 A
4
6
1)
It is possible to use 300 mm2 cable lugs with an M12 screw (cable
lug is not in compliance with DIN 46235, although it is available from
some manufacturers)
Tab. 3/12: Rated currents for cubicles with 3VL
Rated current at 35 °C ambient temperature
MCCB type
3VL5763
28
Nominal
device
current
630 A
Top busbar position
Rear busbar position
Cable connection
Cable entry from the bottom
Cable entry from the top
Non-ventilated
Ventilated
Non-ventilated
Ventilated
Non-ventilated
Ventilated
540 A
570 A
515 A
570 A
475 A
520 A
3VL6780
800 A
685 A
720 A
655 A
720 A
605 A
660 A
3VL7712
1,250 A
890 A
1,100 A
890 A
1,100 A
775 A
980 A
3VL8716
1,600 A
900 A
1,100 A
1,050 A
1,200 A
915 A
1,070 A
SIVACON S8 Planning Principles – Circuit-breaker design
3.4 Cubicles for direct supply and
direct feeder
The different cubicle types:
1.Top busbar position, cable entry from the bottom or top
(the position of the connecting bars is identical for cable
entry from the top or bottom)
2.Rear top busbar position, cable entry from the top
3.Rear top busbar position, cable entry from the bottom
4.Rear bottom busbar position, cable entry from the top
5.Rear bottom busbar position, cable entry from the
bottom
1.
2.
3.
4.
1
5.
2
are schematized in Fig. 3/3.
The cubicle width and maximum number of cables which
can be connected depend on the rated current (Tab. 3/13
and Tab. 3/14). The rated currents, in turn, depend on the
busbar position and cable entry (Tab. 3/15).
3
4
Fig. 3/3: Cubicle types for direct supply and direct feeder (refer to
the text for explanations)
5
Tab. 3/13: Cubicle width for direct supply and direct feeder
Nominal current
1,000 A
1,600 A
2,500 A
3,200 A
4,000 A
Cubicle width
400 mm
400 mm
600 mm
600 mm
800 mm
6
Tab. 3/14: Cable connection for direct supply and direct feeder
Max. number of cables connectible per phase
dependent on rated current
Cable lug DIN 46235
(240 mm2, M12) 1)
7
1,000 A
1,600 A
2,500 A
3,200 A
4,000 A
4
6
12
12
14
1)
Using 300 mm2 cable lugs with an M12 screw is possible. However, this cable lug is not in compliance with DIN 46235, although it is
available at some manufacturers
8
The number of connectible cables may be restricted by the available roof/floor panel openings and/or door installations. The position of the connection busbars is identical for front or rear connection in the cubicle.
9
Tab. 3/15: Rated currents for direct supply and direct feeder
Rated current at 35 °C ambient temperature
Nominal current
Top busbar position
10
Rear busbar position
Cable connection
Cable entry from the bottom
Cable entry from the top
Non-ventilated
Ventilated
Non-ventilated
Ventilated
Non-ventilated
Ventilated
1,000 A
905 A
1,050 A
1,100 A
1,190 A
1,120 A
1,280 A
1,600 A
1,300 A
1,500 A
1,530 A
1,640 A
1,480 A
1,740 A
2,500 A
1,980 A
2,410 A
2,230 A
2,930 A
2,210 A
2,930 A
3,200 A
2,340 A
2,280 A
2,910 A
3,390 A
2,770 A
3,390 A
4,000 A
3,430 A
4,480 A
3,300 A
4,210 A
3,140 A
4,210 A
SIVACON S8 Planning Principles – Circuit-breaker design
11
29
30
SIVACON S8 Planning Principles – Circuit-breaker design
Chapter 4
Universal mounting design
4.1
4.2
4.3
Fixed-mounted design with
compartment door
In-line switch disconnectors
with fuses (3NJ62 / SASIL plus)
Withdrawable design
35
36
36
4 Universal mounting design
The universal mounting design of SIVACON S8 switchboards (Fig. 4/1) allows outgoing feeders in withdrawable
design, fixed-mounted design and pluggable in-line design
to be implemented. A combination of these mounting
designs makes for a space-optimized structure of the
switchboard. Tab. 4/1 gives an overview of the general
cubicle characteristics.
Fig. 4/1: Cubicles for universal mounting design: on the left with front cable connection; on the right for rear cable connection
Tab. 4/1: General cubicle characteristics for the universal mounting design
Application
range
- Incoming feeders up to 630 A
- Outgoing cable feeders up to 630 A
- Outgoing motor feeders up to 630 A (250 kW at 400 V)
Degrees of protection
- Up to IP43 - IP54 Ventilated
Non-ventilated
Cubicle dimensions
- Cubicle height - Cubicle width (rear connection in cubicle)
- Cubicle width (front connection in cubicle)
2,000, 2,200 mm
600 mm
1,000, 1,200 mm
Device compartment
- Height - Width 1,600, 1,800 mm
600 mm
Form of internal separation
- Up to form 4b 1) Compartment door, functional compartment door
Mounting designs
- Withdrawable design
- Fixed-mounted design with compartment door
- In-line switch-disconnectors 3NJ62 with fuses 2)
- In-line switch-disconnectors SASIL plus with fuses (Jean Müller) 2)
1)
2)
32
Dependent on mounting design
Front connection in cubicle
SIVACON S8 Planning Principles – Universal mounting design
1
Cubicle with forced cooling
Cubicles with forced cooling (Fig. 4/2) serve for the assembly of functional units with a very high power loss, for
example, for withdrawable units with a frequency converter up to 45 kW.
2
3
On the left, the cubicles are equipped with a 100 mm wide
ventilation duct. The width of the cable connection compartment is reduced by 100 mm so that the cubicle width
does not change as compared to a cubicle without forced
cooling.
4
5
The withdrawable units with forced cooling are equipped
with fans. The fan control comes completely configured.
No further settings are required upon start-up of the
switchboard. The fans are dimensioned such that the
second fan can ensure the required cooling of the withdrawable unit if a fan fails. A failure message will be issued.
6
7
The cubicles with forced cooling comply with degree of
protection IP31. Connection is effected at the front of the
cubicle.
8
The other cubicle characteristics are identical to the cubicle
without forced cooling. All mounting designs and functional units without forced cooling can be applied.
9
10
11
12
13
14
15
Fig. 4/2: Cubicle with forced cooling for universal mounting design
16
17
SIVACON S8 Planning Principles – Universal mounting design
33
Combination of mounting designs
The different mounting designs can be combined in a
cubicle as shown in Fig. 4/3.
Withdrawable
unit design
In-line design, plugged
Fixed-mounted design
In-line design, plugged
Fixed-mounted
design
Withdrawable unit design
In-line design, plugged
Withdrawable
unit design
Fixed-mounted design
600 mm
Fixed-mounted design
Withdrawable unit design
Withdrawable unit design
600 mm
1,800 / 1,600* mm
2,200 / 2,000 mm
A
Fixed-mounted design
600 / 400 * mm
SIEMENS
SIVACON
* Frame height 2,000 mm
Fig. 4/3: Combination options for universal mounting design
Vertical distribution busbar
connection compartment. In the case of 4-pole feeders, the
N conductor is allocated to the phase conductors L1, L2, L3
at the back of the cubicle. Ratings are stated in Tab. 4/2.
The vertical distribution busbars with the phase conductors
L1, L2, L3 are arranged on the left at the back of the cubicle. The PE, N or PEN busbars are arranged in the cable
Tab. 4/2: Ratings of the vertical distribution busbar
Profile bar
Cross section
400 mm2
650 mm2
1 x (40 mm x 10 mm)
2 x (40 mm x 10 mm)
Ventilated
905 A
1,100 A
865 A
1,120 A
Nonventilated
830 A
1,000 A
820 A
1,000 A
65 kA
65 kA
65 kA
65 kA
Rated current at 35 °C ambient
temperature
Rated short-time withstand
current Icw (1 sec) 2)
1)
2)
34
Flat copper 1)
Distribution busbar
Top main busbar position
Rated conditional short-circuit current Icc = 110 kA
SIVACON S8 Planning Principles – Universal mounting design
4.1 Fixed-mounted design with
compartment door
In fixed-mounted design, the switching devices are installed on mounting plates. They can be equipped with
circuit-breakers or switch-disconnectors with fuses
(Fig. 4/4; left). Tab. 4/3 gives an overview of the cubicle
characteristics in fixed-mounted design. The incoming sides
are connected to the vertical distribution busbars.
For forms 2b and 4a without current measurement, cables
are connected directly at the switching device. The maximum cross sections that can be connected are stated in the
device catalogues.
For forms 3b and 4b as well as for feeders with current
measurement (transformers), the cables are connected in
the cable connection compartment (Fig. 4/4; right).
The maximum connection cross sections are stated in
Tab. 4/4.
The rating for cable feeders is stated in Tab. 4/5. The thermal interaction of the feeders in the cubicle has to be and
is considered by specifying the rated diversity factor (RDF):
Permissible continuous operational current (cable feeder) =
= rated current Inc x RDF
For the feeders in the cubicle, the rated diversity factor RDF
= 0.8 can be applied:
•regardless of the number of feeders in the cubicle
•regardless of the mounting position in the cubicle
For cubicles with a very high packing and/or power density,
a project-specific assessment is recommended. Further
information is available from your Siemens contact.
Tab. 4/3: Cubicle characteristics for the fixed-mounted design
Application range
Form of internal
separation
Mounting designs
- Incoming feeders up to 630 A
- Outgoing cable feeders up to 630 A
- Form 2b Door, cubicle high
- Form 3b, 4a, 4b 1) Compartment door
- Fixed-mounted module in compartment
- Empty compartment, device compartment
1)
Also form 4b type 7 in acc. with BS EN 61439-2 possible
1
2
3
Fig. 4/4: Equipment in fixed-mounted design (left) and connection
terminals in the cable connection compartment (right)
4
Tab. 4/5: Ratings for cable feeders
Type
Nominal
device
current
Module height
Rated current Inc
at 35 °C ambient
temperature
3-pole
4-pole
Nonventilated
Ventilated
150 mm
-
106 A
120 A
133 A
5
6
Fuse switch-disconnectors 1)
3NP1123
160 A
3NP1133
160 A
150 mm
-
123 A
3NP1143
250 A
250 mm
-
222 A
241 A
3NP1153
400 A
300 mm
-
350 A
375 A
3NP1163
630 A
350 mm
-
480 A
530 A
3NP4010
160 A
150 mm
-
84 A
96 A
3NP4070
160 A
150 mm
-
130 A
142 A
3NP4270
250 A
250 mm
-
248 A
250 A
370 A
3NP4370
400 A
300 mm
-
355 A
3NP4470
630 A
350 mm
-
480 A
515 A
3NP5060
160 A
150 mm
-
130 A
142 A
250 A
3NP5260
250 A
250 mm
-
248 A
3NP5360
400 A
300 mm
-
355 A
370 A
3NP5460
630 A
350 mm
-
480 A
515 A
7
8
9
10
Switch-disconnectors with fuses 1)
3KL50
63 A
150 mm
250 mm
61 A
63
3KL52
125 A
250 mm
250 mm
120 A
125
3KL53
160 A
250 mm
250 mm
136 A
143
250
3KL55
250 A
300 mm
350 mm
250 A
3KL57
400 A
300 mm
350 mm
345 A
355
3KL61
630 A
450 mm
500 mm
535 A
555
11
12
Circuit-breakers
3RV2.1
16 A
150 mm
-
12.7 A
14.1 A
3RV2.2
40 A
150 mm
-
27 A
31.5 A
3RV1.3
50 A
150 mm
-
36 A
40 A
79 A
3RV1.4
100 A
150 mm
-
71 A
3VL1
160 A
150 mm
200 mm
121 A
151 A
3VL2
160 A
150 mm
200 mm
130 A
158 A
250 A
3VL3
250 A
200 mm
250 mm
248 A
3VL4
400 A
250 mm
300 mm
400 A
400 A
3VL5
630 A
250 mm
350 mm
525 A
565 A
13
14
15
Device compartments (usable overall depth 310 mm)
Tab. 4/4: Connection cross sections in fixed-mounted cubicles with
a front door
150 mm
16
200 mm
300 mm
Nominal feeder
current
Max. connection cross section
≤ 250 A
120 mm2
> 250 A
240 mm2
400 mm
500 mm
17
600 mm
1) Rated current with fuse link = nominal device current
SIVACON S8 Planning Principles – Universal mounting design
35
4.2 In-line switch-disconnectors
with fuses (3NJ62 / SASIL plus)
For the cubicle in universal mounting design, an adapter is
available that allows the installation of in-line switch-disconnectors with fuses. This adapter is mounted at the
bottom of the cubicle. It occupies 600 mm in the cubicle's
device compartment. An installation height of 500 mm is
available for the installation of in-line switch-disconnectors.
The basic cubicle characteristics are stated in Tab. 4/6.
Further information about in-line switch-disconnectors with
fuses can be found in Chapter 5.
Tab. 4/6: Cubicle characteristics for in-line switch-disconnectors
Application range
- Incoming feeders up to 630 A
- Outgoing cable feeders up to 630 A
Form of internal separation
- Form 3b, 4b Degree of protection
- Up to IP41 Ventilated
Cubicle dimensions
- Width (front connection in cubicle)
1,000, 1,200 mm
4.3 Withdrawable design
If fast replacement of functional units is required in order to
prevent downtimes, the withdrawable design offers a safe
and flexible solution. Regardless of whether small or standard withdrawable units are used, the size is optimally
adapted for the required performance. The patented withdrawable unit contact system has been designed to be
user-friendly and wear-resistant. Tab. 4/7 lists typical cubicle characteristics of the withdrawable design.
Tab. 4/7: General cubicle characteristics for the withdrawable design
Application range
- Incoming feeders up to 630 A
- Outgoing cable feeders up to 630 A
- Outgoing motor feeders up to 630 A (250 kW at 400 V)
Form of internal separation
- Form 3b, 4b 1) Design options
- Withdrawable unit in compartment
- Reserve compartment
- Empty compartment, device compartment
Design variants for feeders 2)
(see Fig. 4/5)
- Standard feature design (SFD)
- High feature design (HFD)
1)
2)
Compartment door,
compartment cover
Also form 4b type 7 in acc. with BS EN 61439-2 possible
Withdrawable unit variants SFD and HFD can be mixed within one cubicle
Fig. 4/5: Design variants of the withdrawable units in standard feature design (SFD; left) and high feature design (HFD; right)
36
SIVACON S8 Planning Principles – Universal mounting design
4.3.1Withdrawable design - standard
feature design (SFD)
The withdrawable units provide a fixed contact system.
Disconnected, test and connected position can be effected
by moving the withdrawable unit (Fig. 4/6). In disconnected or test position, degree of protection IP30 is
achieved. Moving the withdrawable unit under load is
prevented by an operating error protection.
1
2
Disconnected
position
Withdrawable units in SFD provide a detachable cover.
Controls and signalling devices are installed in an instrument panel and integrated into the withdrawable unit
cover (Fig. 4/7). The contact system can be applied up to a
rated current of 250 A. All withdrawable units are equipped
with up to 40 auxiliary contacts. In SFD, standard withdrawable units with a withdrawable unit height of 100 mm
or higher (grid size 50 mm) can be used. Tab. 4/8 summarizes the characteristics of withdrawable units in SFD.
3
4
5
Test
position
Tab. 4/8: Characteristics of withdrawable units in SFD
6
Mechanical withdrawable unit coding
Withdrawable unit height
100 mm
15 coding options
Withdrawable unit height
> 100 mm
21 coding options
7
8
Locking capability
In "0" position for 3UC7
door coupling rotary drive
5 padlocks max.
with a shackle diameter of 4.5 mm
Connected
position
3 padlocks max.
with a shackle diameter of 8.5 mm
9
Instrument panel
Max. installation depth for
devices
10
60 mm
11
57 mm
Usable front area if
withdrawable unit height
100 mm
198 mm
Usable front area if
withdrawable unit height
> 100 mm
12
Fig. 4/6: Positions in the SFD contact system
97 mm
13
Device plate
to be equipped from two sides,
depth/height staggered
198 mm
Withdrawable unit position signal
With optional signalling
switch (-S20)
Feeder available signal
Test position signal
Communication interfaces
Contact enclosure
input
14
Contact enclosure
output
Basic withdrawable unit
Control plug
Handle
Instrument panel
(swivel-type)
15
Position indicator
(option)
Unlock knob
PROFIBUS 1)
(up to 12 Mbit/sec)
Via auxiliary contacts of the control
plug
PROFINET 2)
Separate RJ45 plug
1) Apart from that, other protocols based on the EIA-485 (RS485) interface
standard such as Modbus RTU can be used
2) Apart from that, other protocols based on the Industrial Ethernet standard such as Modbus/TCP can be used
16
17
Fig. 4/7: Standard withdrawable unit in SFD with a withdrawable
unit height of 100 mm
SIVACON S8 Planning Principles – Universal mounting design
37
4.3.2Withdrawable unit compartment in
SFD
The vertical distribution busbar is covered test finger
proofed (IP2X). Phase separation is possible. No connection
work is required in the compartment (Fig. 4/8). The internal
separation options up to form 4b lead to a high degree of
personal safety. Connection is effected in a separate cable
connection compartment. The connection data for main
circuits are stated in Tab. 4/9, those for auxiliary circuits in
Tab. 4/10 and the number of available auxiliary contacts in
Tab. 4/11.
Fig. 4/8: Open withdrawable unit compartments in SFD
Tab. 4/9: Connection data for the main circuit
Withdrawable unit
height
Front connection in cubicle
Rear connection in cubicle
≥ 100 mm
Nominal feeder current
Terminal size
Maximum
connection cross
section
≤ 35 A
16 mm2
-
≤ 63 A
35
mm2
-
≤ 120 A
70 mm2
-
≤ 160 A
95 mm2
-
mm2
-
≤ 250 A
150
100 mm
≤ 35 A
16 mm2
-
≥ 150 mm
≤ 250 A
-
1 x 185 mm2
2 x 120 mm2
Tab. 4/10: Connection data for the auxiliary circuit
Type
Terminal size
Push-in terminal connection
4 mm2
Screw connection
6 mm2
Tab. 4/11: Number of available auxiliary contacts for withdrawable
units in SFD
Withdrawable unit
height
≥ 100 mm
≥ 150 mm
38
Control plug type
Number of available auxiliary contacts (rated current 10 A / 250 V)
Without communication
With PROFIBUS
With PROFINET
12-pole
12
9
12
24-pole
24
21
24
32-pole
32
29
-
40-pole
40
37
-
SIVACON S8 Planning Principles – Universal mounting design
4.3.3Withdrawable design - high feature
design (HFD)
The withdrawable units provide a mobile, wear-resistant
contact system. Disconnected, test and connected position
can be effected by moving the contacts without moving
the withdrawable unit behind the closed compartment
door (Fig. 4/10). Moving the contacts unit under load is
prevented by an maloperation protection. The degree of
protection is kept in every position. In the disconnected
position, all withdrawable unit parts such as the contacts
are located within the device contour and are protected
against damage.
Withdrawable units are available as small withdrawable
units (size ½ and ¼, see Fig. 4/9 and Tab. 4/12) and as
standard withdrawable units (Tab. 4/12). The withdrawable
units of all sizes provide a uniform user interface.
1
2
In addition to the main switch, the individual positions can
be locked. Controls and signalling devices are installed in
an instrument panel. All withdrawable units are equipped
with up to 40 auxiliary contacts.
3
4
Contact enclosure
input / output
5
Basic withdrawable unit
Operator panel for withdrawable unit incl.
- Rotary operating mechanism
- Position indicator
- Operating error protection
- Locking option
Device/cable cover
(removable)
Contact enclosure of
control plug
0
6
Disconnected
position
7
Instrument panel
8
Fig. 4/9: Structure of a small withdrawable unit in HFD
9
Tab. 4/12: Withdrawable units in HFD
Type
Small
withdrawable
unit
Withdrawable
unit
height
View
TEST
10
Test
position
11
150 mm,
200 mm
12
Width ¼
13
Small
withdrawable
unit
150 mm,
200 mm
Width ½
Connected
position
14
15
Standard
withdrawable
unit
16
≥ 100 mm
(grid 50 mm)
17
Fig. 4/10: Positions in the HFD contact system
SIVACON S8 Planning Principles – Universal mounting design
39
Characteristics of the withdrawable units in HFD
Tab. 4/13 is subdivided into small and standard withdrawable units. The installation height has to be observed additionally. The mechanical coding of the compartments and
withdrawable units prevents the exchanging of withdrawable units of identical size. The control and display devices
for the feeder are installed in the instrument panel.
Tab. 4/13: Characteristics of the withdrawable units in HFD
Small withdrawable unit
Standard withdrawable unit
Mechanical withdrawable unit coding
96 coding options
(withdrawable unit height 150, 200 mm)
96 coding options (withdrawable unit height 100 mm)
9216 coding options (withdrawable
unit height > 100 mm)
Locking capability
The withdrawable units can be locked by means of a padlock with a shackle diameter of 6 mm.
The withdrawable unit can then neither be moved to the disconnected, test or connected position
nor be removed from the compartment.
Locking capability of the main switch in the "0" position
is integrated into the control unit:
3 padlocks max.
with 4.5 mm Ø (shackle)
Locking capability for 3UC7 door coupling rotary drive in
"0" position:
5 padlocks max.
with 4.5 mm Ø (shackle)
or
3 padlocks max.
with 8.5 mm Ø (shackle)
Maximum installation
depth for devices
60 mm
70 mm
Usable front area
for installation height 150 mm see Fig. 4/11
see Fig. 4/13
Instrument panel
for installation height 200 mm see Fig. 4/12
Withdrawable unit position signal
With optional signalling
switch (-S20)
Feeder available signal
Feeder available signal
Test position signal
Test position signal
PROFIBUS 1)
(up to 12 Mbit/sec)
Via auxiliary contacts of the control plug
Via auxiliary contacts of the control plug
PROFINET 2)
Size ¼: One separate RJ45 plug
One or two separate RJ45 plug(s)
Size ½: One or two separate RJ45 plug(s)
Communication interfaces
1)
2)
40
Apart from that, other protocols based on the EIA-485 (RS485) interface standard such as Modbus RTU can be used
Apart from that, other protocols based on the Industrial Ethernet standard such as Modbus TCP can be used
SIVACON S8 Planning Principles – Universal mounting design
Size: ¼
Size: ½
105
104
1
2
109
38
38
94
3
Dimensions in mm
4
5
Fig. 4/11: Front areas usable for an instrument panel on small withdrawable units with an installation height of 150 mm
Size: ¼
6
Size: ½
105
94
104
8
159
88
88
7
9
10
Dimensions in mm
11
Fig. 4/12: Front areas usable for an instrument panel on small withdrawable units with an installation height of 200 mm
12
Height of withdrawable unit > 100 mm
Height of withdrawable unit 100 mm
96
13
51.5
14
15
190
190
16
Dimensions in mm
17
Fig. 4/13: Front areas usable for an instrument panel on standard withdrawable units
SIVACON S8 Planning Principles – Universal mounting design
41
4.3.4Withdrawable unit compartment in
HFD
The vertical distribution busbar is covered test finger
proofed (IP2X). Phase separation is possible. No connection
work is required in the compartment (Fig. 4/14). The
internal separation options up to form 4b lead to a high
degree of personal safety.
shutters are opened automatically when the withdrawable
unit is inserted into the compartment.
Connection is effected in a separate cable connection
compartment. The connection data for main circuits are
stated in Tab. 4/14, those for auxiliary circuits in Tab. 4/15
and the number of available auxiliary contacts in Tab. 4/16.
For small withdrawable units, an adapter plate is mounted
at the top of the compartment (Fig. 4/15). The tap-off
openings for the input contacts of the withdrawable units
in the compartment can be equipped with shutters. The
The rated current for auxiliary contacts is:
•6 A (250 V) for small withdrawable units
•10 A (250 V) for standard withdrawable units
Fig. 4/14: Compartment for standard withdrawable unit in HFD
Fig. 4/15: Adapter plate for small withdrawable units
Tab. 4/14: Connection data for the main circuit
Withdrawable unit
height
Small withdrawable unit
150 mm, 200 mm
100 mm
Standard withdrawable unit
Nominal feeder current
Terminal size
Maximum connection
cross section
≤ 35 A
16 mm2
-
≤ 63 A
35 mm2
-
≤ 35 A
16 mm2
-
≤ 63 A
35
mm2
-
≤ 250 A
-
1 x 185 mm2
2 x 120 mm2
> 250 A
-
2 x 240 mm2
4 x 120 mm2
≥ 150 mm
Tab. 4/15: Connection data for the auxiliary circuit
Type
Terminal size
Push-in terminal connection
2.5 mm2
Screw connection
2.5 mm2
Tab. 4/16: Number of available auxiliary contacts for withdrawable
units in HFD
Withdrawable unit
height
Small withdrawable unit
150, 200 mm
≥ 100 mm
Standard withdrawable unit
≥ 150 mm
42
Number of available auxiliary contacts
Control plug type
Without
communication
With PROFIBUS
With PROFINET
26-pole
26
20
19
40-pole
40
37
32
12-pole
12
9
12
24-pole
24
21
24
32-pole
32
29
32
40-pole
40
37
40
SIVACON S8 Planning Principles – Universal mounting design
4.3.5Ratings for
cable feeders in SFD / HFD
Withdrawable units in SFD are applied up to a rated current
of 250 A. The two withdrawable unit variants SFD and HFD
can be mixed within one cubicle.
1
Tab. 4/17: Rated currents and minimum withdrawable unit heights for cable feeders in SFD / HFD
2
Small withdrawable unit 1)
Type
Nominal
device
current
Minimum withdrawable unit size (height)
Rated current Inc
at 35 °C ambient temperature
3-pole
4-pole
Non-ventilated
Ventilated
3
Main switch and fuses 3)
3LD22
32 A
150 mm - ¼, ½
150 mm - ¼, ½
32 A
32 A
3LD25
63 A
200 mm - ¼, ½
200 mm - ¼, ½
52.5 A
55.5 A
4
Circuit-breakers
3RV2.1
16 A
150 mm - ¼, ½
-
14.6 A
15.2 A
3RV2.2
40 A
150 mm - ¼, ½
-
32 A
33.5 A
3RV1.3
50 A
150 mm - ½
-
40 A
40 A
3RV1.4
100 A
150 mm - ½
-
50 A
51.5 A
5
6
Standard withdrawable unit
Type
Nominal
device
current
Minimum withdrawable unit size (height)
Rated current Inc
at 35 °C ambient temperature
3-pole
4-pole
Non-ventilated
Ventilated
100 mm
-
32 A
32 A
7
Main switch and fuses 3)
3LD22
32 A
8
Switch-disconnectors with fuses 3)
3KL50
63 A
150 mm
150 mm
63 A
63 A
3KL52
125 A
150 mm
150 mm
117 A
122 A
3KL53
160 A
200 mm
200 mm
137 A
142 A
3KL55
250 A
300 mm
300 mm
220 A
222 A
3KL57
400 A
300 mm
300 mm
305 A
340 A
3KL61
630 A
400 mm
500 mm
430 A
485 A
9
10
Circuit-breakers
3RV2.1
16 A
100 mm
-
14.6 A
15.2 A
3RV2.2
40 A
100 mm
-
32 A
33.5 A
3RV1.3
50 A
150 mm
-
40 A
40 A
3RV1.4
100 A
150 mm
-
50 A
51.5 A
3VL1
160 A
200 mm
200 mm
135 A
141 A
3VL2
160 A
200 mm
200 mm
136 A
142 A
3VL3
250 A
200 mm
250 mm
201 A
217 A
3VL4
400 A
200 mm
400 mm
305 A
330 A
3VL5
630 A
300 mm
400 mm
375 A
415 A
3VL5
630 A
500 mm 2)
-
435 A
485 A
11
12
13
1) Type: ¼ = small withdrawable unit size ¼
½ = small withdrawable unit size ½
2) Circuit-breaker in vertical mounting position
3) Rated current with fuse link = nominal device current
The thermal interaction of the feeders in the cubicle has to
be and is considered by specifying the rated diversity factor
(RDF):
Permissible continuous operational current (cable feeder) =
= rated current Inc x RDF
14
For the feeders in the cubicle, the rated diversity factor RDF
= 0.8 can be applied:
•regardless of the number of feeders in the cubicle
•regardless of the mounting position in the cubicle
15
16
For cubicles with a very high packing and/or power density,
a project-specific assessment is recommended. Further
information is available from your Siemens contact.
SIVACON S8 Planning Principles – Universal mounting design
17
43
4.3.6Ratings for
motor feeders in SFD / HFD
Withdrawable units in SFD are applied up to a rated current
of 250 A. The two withdrawable unit variants SFD and HFD
can be mixed within one cubicle.
The following tables list the minimum withdrawable unit
sizes (Tab. 4/18 to Tab. 4/22) for motor feeders. Dependent
on the number of project-specific secondary devices and
the control wiring, larger withdrawable units might be
required.
More detailed information about motor feeders is available
from your local Siemens contact.
•Motor feeders for rated voltage
500 V and 690 V
•Motor feeders for tripping class up to CLASS 30
•Motor feeders for short-circuit breaking capacity
up to 100 kA
•Motor feeders with soft starter
•Motor feeders with frequency converter
•Small withdrawable units for star-delta circuit
The thermal interaction of the feeders in the cubicle has to
be and is considered by specifying the rated diversity factor
(RDF):
Tab. 4/18: Minimum withdrawable unit sizes for:
fused motor feeders, 400 V, CLASS 10,
with overload relay, type 2 at 50 kA
Small withdrawable unit 1)
Minimum withdrawable unit size
at 35 °C ambient temperature
Motor
power P
(AC-2/AC-3)
Height 150 mm
Height 200 mm
Direct
contactor
Reversing
circuit
Direct
contactor
Reversing
circuit
0.25 kW
¼, ½
¼, ½
¼, ½
¼, ½
0.37 kW
¼, ½
¼, ½
¼, ½
¼, ½
0.55 kW
¼, ½
¼, ½
¼, ½
¼, ½
0.75 kW
¼, ½
¼, ½
¼, ½
¼, ½
1.1 kW
¼, ½
¼, ½
¼, ½
¼, ½
1.5 kW
¼, ½
¼, ½
¼, ½
¼, ½
2.2 kW
¼, ½
¼, ½
¼, ½
¼, ½
3 kW
¼, ½
¼, ½
¼, ½
¼, ½
4 kW
¼, ½
¼, ½
¼, ½
¼, ½
5.5 kW
¼, ½
¼, ½
¼, ½
¼, ½
7.5 kW
¼, ½
¼, ½
¼, ½
¼, ½
11 kW
¼, ½
¼, ½
¼, ½
¼, ½
15 kW
½
½
¼, ½
½
18.5 kW
½
½
¼, ½
½
Standard withdrawable unit
Permissible continuous operational current (motor feeder)
= rated current Inc x RDF
For the feeders in the cubicle, the rated diversity factor RDF
= 0.8 can be applied:
•regardless of the number of feeders in the cubicle
•regardless of the mounting position in the cubicle
Motor
power P
(AC-2/AC-3)
Minimum withdrawable unit height
at 35 °C ambient temperature
Direct
contactor
Reversing
circuit
Star-delta
0.25 kW
100 mm
100 mm
150 mm
0.37 kW
100 mm
100 mm
150 mm
0.55 kW
100 mm
100 mm
150 mm
0.75 kW
100 mm
100 mm
150 mm
For a rated diversity factor RDF > 0.8, the power grading
next in size is to be set for the motor feeder.
1.1 kW
100 mm
100 mm
150 mm
1.5 kW
100 mm
100 mm
150 mm
2.2 kW
100 mm
100 mm
150 mm
For cubicles with a very high packing and/or power density,
a project-specific assessment is recommended; information
about that is available from your Siemens contact.
3 kW
100 mm
100 mm
150 mm
4 kW
100 mm
100 mm
150 mm
5.5 kW
100 mm
100 mm
150 mm
7.5 kW
100 mm
100 mm
150 mm
11 kW
100 mm
100 mm
150 mm
15 kW
150 mm
150 mm
150 mm
18.5 kW
150 mm
150 mm
200 mm
22 kW
150 mm
150 mm
200 mm
30 kW
200 mm
200 mm
200 mm
37 kW
200 mm
200 mm
200 mm
45 kW
200 mm
200 mm
250 mm
55 kW
400 mm
500 mm
250 mm
75 kW
400 mm
500 mm
250 mm
90 kW
400 mm
500 mm
500 mm
110 kW
500 mm
600 mm
500 mm
132 kW
500 mm
600 mm
500 mm
160 kW
500 mm
600 mm
500 mm
200 kW
600 mm
700 mm
700 mm
250 kW
600 mm
700 mm
700 mm
The standard values for the operating currents of threephase asynchronous motors can be found in Chapter 10.
1) Type: ¼ = small withdrawable unit size ¼
½ = small withdrawable unit size ½
44
SIVACON S8 Planning Principles – Universal mounting design
Tab. 4/20: Minimum withdrawable unit sizes for:
fuseless motor feeders, 400 V, CLASS 10,
overload protection with circuit-breaker, type 2 at 50 kA
Tab. 4/19: Minimum withdrawable unit sizes for:
fused motor feeders, 400 V, CLASS 10,
with SIMOCODE, type 2 at 50 kA
Small withdrawable unit 1)
Motor
power P
(AC-2/AC-3)
1
Small withdrawable unit 1)
Minimum withdrawable unit size
at 35 °C ambient temperature
Minimum withdrawable unit size
at 35 °C ambient temperature
Motor
power P
(AC-2/AC-3)
Height 150 mm
Height 200 mm
Direct
contactor
Reversing
circuit
Direct
contactor
Reversing
circuit
Height 150 mm
Height 200 mm
Direct
contactor
Reversing
circuit
Direct
contactor
Reversing
circuit
0.25 kW
¼, ½
¼, ½
¼, ½
¼, ½
0.37 kW
¼, ½
¼, ½
¼, ½
¼, ½
0.25 kW
½
-
¼, ½
¼, ½
0.55 kW
¼, ½
¼, ½
¼, ½
¼, ½
0.37 kW
½
-
¼, ½
¼, ½
0.75 kW
¼, ½
¼, ½
¼, ½
¼, ½
0.55 kW
½
-
¼, ½
¼, ½
1.1 kW
¼, ½
¼, ½
¼, ½
¼, ½
¼, ½
¼, ½
¼, ½
¼, ½
0.75 kW
½
-
¼, ½
¼, ½
1.5 kW
1.1 kW
½
-
¼, ½
¼, ½
2.2 kW
¼, ½
¼, ½
¼, ½
¼, ½
1.5 kW
½
-
¼, ½
¼, ½
3 kW
¼, ½
¼, ½
¼, ½
¼, ½
2.2 kW
½
-
¼, ½
¼, ½
4 kW
¼, ½
¼, ½
¼, ½
¼, ½
3 kW
½
-
¼, ½
¼, ½
5.5 kW
¼, ½
¼, ½
¼, ½
¼, ½
4 kW
½
-
¼, ½
¼, ½
7.5 kW
¼, ½
¼, ½
¼, ½
¼, ½
5.5 kW
½
-
¼, ½
¼, ½
11 kW
½
½
½
½
7.5 kW
½
-
¼, ½
¼, ½
15 kW
½
½
½
½
11 kW
½
-
¼, ½
¼, ½
18.5 kW
½
-
½
½
15 kW
½
-
½
½
22 kW
½
-
½
½
18.5 kW
½
-
½
½
30 kW
-
-
½
-
Standard withdrawable unit
2
3
4
5
6
7
Standard withdrawable unit
Minimum withdrawable unit height
at 35 °C ambient temperature
Motor
power P
(AC-2/AC-3)
Direct
contactor
Reversing
circuit
0.25 kW
100 mm
Star-delta
Direct
contactor
Reversing
circuit
Star-delta
100 mm
200 mm
0.25 kW
100 mm
100 mm
150 mm
0.37 kW
100 mm
100 mm
200 mm
0.37 kW
100 mm
100 mm
150 mm
0.55 kW
100 mm
100 mm
200 mm
0.55 kW
100 mm
100 mm
150 mm
0.75 kW
100 mm
100 mm
200 mm
0.75 kW
100 mm
100 mm
150 mm
1.1 kW
100 mm
100 mm
200 mm
1.1 kW
100 mm
100 mm
150 mm
1.5 kW
100 mm
100 mm
200 mm
1.5 kW
100 mm
100 mm
150 mm
2.2 kW
100 mm
100 mm
200 mm
2.2 kW
100 mm
100 mm
150 mm
3 kW
100 mm
100 mm
200 mm
3 kW
100 mm
100 mm
150 mm
4 kW
100 mm
100 mm
200 mm
4 kW
100 mm
100 mm
150 mm
5.5 kW
100 mm
150 mm
200 mm
5.5 kW
100 mm
100 mm
150 mm
7.5 kW
100 mm
150 mm
200 mm
7.5 kW
100 mm
100 mm
150 mm
11 kW
100 mm
150 mm
200 mm
11 kW
100 mm
100 mm
150 mm
15 kW
150 mm
150 mm
200 mm
15 kW
100 mm
100 mm
150 mm
18.5 kW
150 mm
150 mm
200 mm
18.5 kW
150 mm
150 mm
200 mm
22 kW
150 mm
150 mm
200 mm
22 kW
150 mm
150 mm
200 mm
30 kW
200 mm
200 mm
200 mm
30 kW
150 mm
250 mm
250 mm
37 kW
200 mm
200 mm
200 mm
37 kW
150 mm
250 mm
250 mm
45 kW
200 mm
200 mm
200 mm
45 kW
150 mm
250 mm
250 mm
55 kW
400 mm
500 mm
250 mm
55 kW
300 mm
400 mm
400 mm
75 kW
400 mm
500 mm
250 mm
75 kW
300 mm
400 mm
400 mm
90 kW
400 mm
500 mm
500 mm
90 kW
300 mm
400 mm
400 mm
110 kW
500 mm
600 mm
500 mm
110 kW
400 mm
500 mm
500 mm
132 kW
500 mm
600 mm
500 mm
132 kW
500 mm
500 mm
700 mm
160 kW
500 mm
600 mm
500 mm
160 kW
500 mm
500 mm
700 mm
200 kW
600 mm
700 mm
700 mm
200 kW
700 mm
700 mm
700 mm
250 kW
600 mm
700 mm
700 mm
250 kW
700 mm
700 mm
700 mm
1) Type: ¼ = small withdrawable unit size ¼
½ = small withdrawable unit size ½
8
Minimum withdrawable unit height
at 35 °C ambient temperature
Motor
power P
(AC-2/AC-3)
9
10
11
12
13
14
15
16
17
1) Type: ¼ = small withdrawable unit size ¼
½ = small withdrawable unit size ½
SIVACON S8 Planning Principles – Universal mounting design
45
Tab. 4/21: Minimum withdrawable unit sizes for:
fuseless motor feeders, 400 V, CLASS 10,
with overload relay, type 2 at 50 kA
Tab. 4/22: Minimum withdrawable unit sizes for:
fuseless motor feeders, 400 V, CLASS 10,
with SIMOCODE, type 2 at 50 kA
Small withdrawable unit 1)
Small withdrawable unit 1)
Minimum withdrawable unit size at 35 °C ambient
temperature
Motor
power P
(AC-2/AC-3)
Height 150 mm
Height 200 mm
Direct
contactor
Reversing
circuit
Direct
contactor
Reversing
circuit
0.25 kW
¼, ½
¼, ½
¼, ½
0.37 kW
¼, ½
¼, ½
¼, ½
0.55 kW
¼, ½
¼, ½
0.75 kW
¼, ½
1.1 kW
Motor
power P
(AC-2/AC-3)
Height 150 mm
Height 200 mm
Direct
contactor
Reversing
circuit
Direct
contactor
Reversing
circuit
¼, ½
0.25 kW
½
½
¼, ½
¼, ½
¼, ½
0.37 kW
½
½
¼, ½
¼, ½
¼, ½
¼, ½
0.55 kW
½
½
¼, ½
¼, ½
¼, ½
¼, ½
¼, ½
0.75 kW
½
½
¼, ½
¼, ½
¼, ½
¼, ½
¼, ½
¼, ½
1.1 kW
½
½
¼, ½
¼, ½
1.5 kW
¼, ½
¼, ½
¼, ½
¼, ½
1.5 kW
½
½
¼, ½
¼, ½
2.2 kW
¼, ½
¼, ½
¼, ½
¼, ½
2.2 kW
½
½
¼, ½
¼, ½
3 kW
¼, ½
¼, ½
¼, ½
¼, ½
3 kW
½
½
¼, ½
¼, ½
4 kW
¼, ½
¼, ½
¼, ½
¼, ½
4 kW
½
½
¼, ½
¼, ½
5.5 kW
¼, ½
¼, ½
¼, ½
¼, ½
5.5 kW
½
½
¼, ½
¼, ½
7.5 kW
¼, ½
¼, ½
¼, ½
¼, ½
7.5 kW
½
½
¼, ½
¼, ½
11 kW
½
½
½
½
11 kW
½
½
½
½
15 kW
½
½
½
½
15 kW
-
-
½
½
18.5 kW
½
-
½
½
18.5 kW
-
-
½
-
22 kW
½
-
½
½
22 kW
-
-
½
-
30 kW
-
-
½
-
30 kW
-
-
½
-
Standard withdrawable unit
Standard withdrawable unit
Minimum withdrawable unit height at 35 °C
ambient temperature
Motor
power P
(AC-2/AC-3)
Direct contactor
Reversing
circuit
Star-delta
Motor
power P
(AC-2/AC-3)
0.25 kW
100 mm
100 mm
150 mm
0.37 kW
100 mm
100 mm
150 mm
0.55 kW
100 mm
100 mm
0.75 kW
100 mm
100 mm
1.1 kW
100 mm
1.5 kW
2.2 kW
Minimum withdrawable unit height at 35 °C
ambient temperature
Direct
contactor
Reversing
circuit
0.25 kW
100 mm
100 mm
150 mm
0.37 kW
100 mm
100 mm
150 mm
150 mm
0.55 kW
100 mm
100 mm
150 mm
150 mm
0.75 kW
100 mm
100 mm
150 mm
100 mm
150 mm
1.1 kW
100 mm
100 mm
150 mm
100 mm
100 mm
150 mm
1.5 kW
100 mm
100 mm
150 mm
100 mm
100 mm
150 mm
2.2 kW
100 mm
100 mm
150 mm
3 kW
100 mm
100 mm
150 mm
3 kW
100 mm
100 mm
150 mm
4 kW
100 mm
100 mm
150 mm
4 kW
100 mm
100 mm
150 mm
5.5 kW
100 mm
100 mm
150 mm
5.5 kW
100 mm
100 mm
150 mm
7.5 kW
100 mm
100 mm
150 mm
7.5 kW
100 mm
100 mm
150 mm
11 kW
100 mm
100 mm
150 mm
11 kW
150 mm
150 mm
150 mm
15 kW
100 mm
100 mm
150 mm
15 kW
150 mm
150 mm
200 mm
18.5 kW
150 mm
150 mm
200 mm
18.5 kW
200 mm
250 mm
250 mm
22 kW
150 mm
150 mm
200 mm
22 kW
200 mm
250 mm
250 mm
30 kW
150 mm
250 mm
250 mm
30 kW
200 mm
250 mm
250 mm
37 kW
150 mm
250 mm
250 mm
37 kW
200 mm
250 mm
250 mm
45 kW
150 mm
250 mm
250 mm
45 kW
200 mm
250 mm
250 mm
55 kW
300 mm
400 mm
400 mm
55 kW
300 mm
400 mm
400 mm
75 kW
300 mm
400 mm
400 mm
75 kW
300 mm
400 mm
400 mm
90 kW
300 mm
400 mm
400 mm
90 kW
300 mm
400 mm
400 mm
110 kW
400 mm
500 mm
500 mm
110 kW
400 mm
500 mm
500 mm
132 kW
500 mm
500 mm
700 mm
132 kW
500 mm
500 mm
700 mm
160 kW
500 mm
500 mm
700 mm
160 kW
500 mm
500 mm
700 mm
200 kW
700 mm
700 mm
700 mm
200 kW
600 mm
700 mm
700 mm
250 kW
700 mm
700 mm
700 mm
250 kW
600 mm
700 mm
700 mm
1) Type: ¼ = small withdrawable unit size ¼
½ = small withdrawable unit size ½
46
Minimum withdrawable unit size at 35 °C ambient
temperature
SIVACON S8 Planning Principles – Universal mounting design
1) Type: ¼ = small withdrawable unit size ¼
½ = small withdrawable unit size ½
Star-delta
Chapter 5
Plug-in in-line design
5.1
5.2
In-line switch-disconnectors 3NJ62
with fuses
49
In-line switch-disconnectors SASIL plus with fuses
51
5 In-line design, pluggable
The plug-in design for SIVACON S8 switchboard (Fig. 5/1)
with switching devices in in-line design with an incoming-side plug contact allows easy and fast modification or
replacement under operating conditions. The pluggable
in-line units are operated directly at the device. Tab. 5/1
gives an overview of the general cubicle characteristics.
Connection is effected directly at the switching device The
maximum cable cross sections that can be connected are
stated in the device catalogues. The in-line switch-disconnector allows the installation of a measuring instrument for
single-pole measurement. For three-pole measurement,
the measuring instruments can be installed in the device or
cable compartment door. The associated current transformers are integrated into the in-line unit on the cable feeder
side.
Fig. 5/1: Cubicles for in-line design, pluggable: on the left for in-line switch-disconnectors 3NJ62 with fuses, on the right for switchdisconnectors SASIL plus with fuses
Tab. 5/1: General cubicle characteristics for in-line design, pluggable
48
Application
range
- Incoming feeders up to 630 A
- Outgoing cable feeders up to 630 A
Degrees of protection
- Up to IP41 Ventilated
Cubicle dimensions
- Cubicle height - Cubicle width (front connection in the cubicle)
2,000, 2,200 mm
1,000, 1,200 mm
Device compartment
- Height - Width 1,550, 1,750 mm
600 mm
Form of internal separation
- Form 3b, 4b Design options
- In-line switch-disconnectors 3NJ62 with fuses
- In-line switch-disconnectors SASIL plus with fuses (Jean Müller)
- Empty slot, device compartment
SIVACON S8 Planning Principles – In-line design, pluggable
5.1 In-line switch-disconnectors
3NJ62 with fuses
In-line switch-disconnectors 3NJ62 with fuses
(Fig. 5/2) provide single as well as double breaking as a
standard feature.
1
Rating data of the vertical 3NJ62 distribution busbar
The vertical distribution busbars with the phase conductors
L1, L2, L3 are arranged at the back of the cubicle. The PE, N
or PEN busbars are arranged in the cable connection compartment. In the case of 4-pole feeders, the N conductor is
allocated to the phase conductors L1, L2, L3 at the back of
the cubicle.
The vertical distribution busbar is covered test finger
proofed (IP2X). The rated data are stated in Tab. 5/2.
2
Fig. 5/2: Pluggable in-line switch-disconnectors 3NJ62
3
Tab. 5/2: Rating data of the vertical distribution busbar 3NJ62
Rating data of the 3NJ62 cable feeders
Apart from the space requirements for additional built-in
elements (Tab. 5/3), the derating factor stated in Tab. 5/4 is
to be set for determining the permissible operating current
of a fuse link. The space requirements for the cable feeders
of the different in-line units depend on the nominal device
current (Tab. 5/5).
Distribution busbar cross section
60 x 10 mm2
80 x 10 mm2
Rated current at 35 °C ambient
temperature
1,560 A
2,100 A
Rated short-time withstand
current Icw (1 sec) 1)
50 kA
50 kA
1)
4
Rated conditional short-circuit current Icc = 100 kA
5
Tab. 5/3: Additional built-in elements for 3NJ62
Built-in elements
Height in mm
Version
Blanking cover for
empty slots
50 1)
Plastic
100, 200, 300
Metal
200, 400, 600
Usable overall device
depth 180 mm
Device compartment
(mounting
plate with
compartment door)
1)
6
7
Accessory 3NJ6900-4CB00
Tab. 5/4: Derating factors for 3NJ62 fuse links
Nominal current of fuse link
Derating factor F
In < 630 A
0.8
In ≥ 630 A
0.79
8
9
Tab. 5/5: Rating data of the 3NJ62 cable feeders
Type
Nominal device
current
Space requirements of the in-line unit (height) 1)
Size
3-pole
4-pole
10
Rated current 1)
at 35 °C ambient temperature
3NJ6203
160 A
50 mm
100 mm
00
125 A
3NJ6213
250 A
100 mm
150 mm
1
200 A
3NJ6223
400 A
200 mm
250 mm
2
320 A
3NJ6233
630 A
200 mm
250 mm
3
500 A
11
1)
Rated current with fuse link = nominal device current
The configuration rules stated in the following are to be observed
SIVACON S8 Planning Principles – In-line design, pluggable
49
Configuration rules
For the completely equipped cubicle, the rated diversity
factor (RDF) in accordance with IEC 61439-2 applies.
Non-observance of these notes might result in premature
ageing of fuses and their uncontrolled tripping due to local
overheating. The permissible operating current of all in-line
units in the cubicle is limited by the rated current of the
vertical distribution busbar.
Rating data and arrangement notes for the configuration of
in-line units and covers are given in Tab. 5/7. The in-line
switch-disconnectors are arranged in the cubicle either in
groups or individually in decreasing order from size 3 to
size 00. Blanking covers with vent slots are mounted in
between for ventilation.
All data refer to an ambient temperature of the switchgear
of 35 °C on 24 h average. Conversion factors for different
ambient temperatures are stated in Tab. 5/6.
Tab. 5/6: Conversion factors for different ambient temperatures
Ambient temperature of the
switchgear
20 °C
25 °C
30 °C
35 °C
40 °C
45 °C
50 °C
55 °C
Conversion factor
1.10
1.07
1.04
1.00
0.95
0.90
0.85
0.80
Tab. 5/7: Configuration rules for 3NJ62: arrangement of the in-line units in the cubicle
Size
Grouping
Blanking covers
with vent slots
Example
In-line unit
00
1
Summation current of
the group ≤ 400 A
100 mm blanking cover
below 1) the group
In-line unit size 00 / 1
In-line unit size 00 / 1
In-line unit size 00 / 1
In-line unit
In-line unit
2
Not permissible
50 mm blanking cover below 1)
the in-line unit
Nominal
current
fuse:
Operating
current
80 A
125 A
250 A
64 A
100 A
200 A
Total:
364 A
Nominal
current
fuse:
Operating
current
400 A
320 A
Nominal
current
fuse:
Operating
current
500 A
400 A
Nominal
current
fuse:
Operating
current
630 A
500 A
In-line unit size 2
In-line unit
In-line unit
Not permissible
Operating current < 440 A
50 mm blanking cover above
and
100 mm blanking cover
below 1) the in-line unit
In-line unit size 3
In-line unit
3
In-line unit
Not permissible
Operating current
from 440 A to 500 A
100 mm blanking cover each
above and below 1) the in-line
unit
In-line unit size 3
In-line unit
1)
50
Below the bottommost in-line unit, only 50 mm blanking cover instead of 100 mm blanking cover or no blanking cover instead of 50 mm blanking cover required
SIVACON S8 Planning Principles – In-line design, pluggable
5.2 In-line switch-disconnectors
SASIL plus with fuses
Cubicles with pluggable in-line switch-disconnectors can
also be equipped with SASIL plus in-line units (Fig. 5/3)
produced by Jean Müller.
1
Rating data of the vertical distribution busbar of SASIL
plus
The vertical distribution busbars with the phase conductors
L1, L2, L3 are arranged at the back of the cubicle. The PE, N
or PEN busbars are arranged in the cable connection compartment. In the case of 4-pole feeders, the N conductor is
allocated to the phase conductors L1, L2, L3 at the back of
the cubicle. The vertical distribution busbar is covered test
finger proofed (IP2X). The rated data are stated in Tab. 5/8.
Rating data of the SASIL plus cable feeders
Apart from the space requirements for additional built-in
elements (Tab. 5/9), the derating factor stated in Tab. 5/10
is to be set for determining the permissible operating
current of a fuse link. The space requirements for the cable
feeders of the different in-line units depend on the nominal
device current (Tab. 5/11).
2
Fig. 5/3: Pluggable in-line switch-disconnectors SASIL plus
3
Tab. 5/8: Rating data of the vertical distribution busbar SASIL plus
Distribution busbar cross section
60 x 10 mm2
80 x 10 mm2
Rated current at 35 °C ambient
temperature
1,560 A
2,100 A
Rated short-time withstand
current Icw (1 sec) 1)
50 kA
50 kA
1)
4
5
Rated conditional short-circuit current Icc = 100 kA
Tab. 5/9: Additional built-in elements for SASIL plus
Built-in elements
Height in mm
Version
Blanking cover for
empty slots
50, 75, 150,
300
Metal
150, 200, 300,
450, 600
Without power tapping,
usable overall device
depth 180 mm
200, 300, 450,
600
With power tapping,
usable overall device
depth 180 mm
Device compartment
(mounting
plate with
compartment door)
6
7
Tab. 5/10: Derating factors for SASIL plus fuse links
Nominal current of fuse link
8
Derating factor F
In ≤ 32 A
1
32 A < In ≤ 160 A
0.76
160 A < In ≤ 630 A
0.81
9
Tab. 5/11: Rating data of the SASIL plus cable feeders
Size
Nominal device
current
Space requirements of the in-line unit (height) 1)
3-pole
4-pole
00
160 A
50 mm
100 mm
122 A
1
250 A
75 mm
150 mm
203 A
2
400 A
150 mm
300 mm
324 A
3
630 A
150 mm
300 mm
510 A
1)
10
Rated current 1)
at 35 °C ambient temperature
11
Rated current with fuse link = nominal device current
The configuration rules stated in the following are to be observed
SIVACON S8 Planning Principles – In-line design, pluggable
51
Configuration rules
For the completely equipped cubicle, the RDF in accordance
with IEC 61439-2 applies. Non-observance of these notes
might result in premature ageing of fuses and their uncontrolled tripping due to local overheating. The permissible
operating current of all in-line units in the cubicle is limited
by the rated current of the vertical distribution busbar.
All data refer to an ambient temperature of the switchgear
of 35 °C on 24 h average. Conversion factors for different
ambient temperatures are stated in Tab. 5/12.
Rating data and arrangement notes for the configuration of
in-line units and covers are given in Tab. 5/13. The in-line
switch-disconnectors are arranged in the cubicle either in
groups or individually in decreasing order from size 3 to
size 00. Blanking covers with vent slots are mounted in
between for ventilation.
Tab. 5/12: Conversion factors for different ambient temperatures
Ambient temperature of the
switchgear
20 °C
25 °C
30 °C
35 °C
40 °C
45 °C
50 °C
55 °C
Conversion factor
1.10
1.07
1.04
1.00
0.96
0.93
0.89
0.85
Tab. 5/13: Configuration rules for SASIL plus: arrangement of the in-line units in the cubicle
Size
Grouping
Blanking covers 75 mm
with vent slots
Example
In-line unit
00
Summation current of
the group ≤ 319 A
One blanking cover each above
and below 1) the group
In-line unit size 00
In-line unit size 00
In-line unit size 00
In-line unit
In-line unit
1
Summation current of
the group ≤ 365 A
One blanking cover each above
and below 1) the group
In-line unit size 1
In-line unit size 1
Nominal
current
fuse:
Operating
current
80 A
100 A
160 A
60 A
76 A
122 A
Total:
256 A
Nominal
current
fuse:
Operating
current
250 A
250 A
182 A
182 A
Total:
364 A
Nominal
current
fuse:
Operating
current
355 A
288 A
Nominal
current
fuse:
Operating
current
630 A
510 A
In-line unit
In-line unit
2
Not permissible
One blanking cover each above
and below 1) the group
In-line unit size 2
In-line unit
In-line unit
3
Not permissible
Two blanking covers each
above and below 1) the group
In-line unit size 3
In-line unit
1)
52
Below the bottommost in-line unit, only 75 mm blanking cover instead of 150 mm blanking cover or no blanking cover instead of 75 mm blanking cover required
SIVACON S8 Planning Principles – In-line design, pluggable
Chapter 6
Cubicles in fixed-mounted design
6.1
6.2
6.3
In-line design, fixed-mounted
Fixed-mounted design
with front cover
Cubicle for customized solutions
54
57
61
6 Cubicles in fixed-mounted design
If the exchange of components under operating conditions
is not required or if short downtimes are acceptable, then
the fixed-mounted design offers a safe and cost-efficient
solution.
6.1 In-line design, fixed-mounted
The cubicles for cable feeders in fixed-mounted design up
to 630 A are equipped with vertically installed fuse
switch-disconnectors 3NJ4 (Fig. 6/1). The cubicles are
available with rear busbar position. Due to their compact
and modular design, they allow optimal cost-efficient
applications in the infrastructure sector. Design-verified
standard modules guarantee maximum safety.
Dependent on the cubicle width, multiple switch-disconnectors of size 00 to 3 can be installed. For the installation
of additional auxiliary devices, standard rails, wiring ducts,
terminal blocks etc., a device support plate can be provided
in the cubicle. Alternatively, it is possible to install an
ALPHA small distribution board. Measuring instruments and
control elements are installed in the door.
Fig. 6/1: Cubicles for fixed-mounted in-line design with 3NJ4 in-line switch-disconnectors
54
SIVACON S8 Planning Principles – Cubicles in fixed-mounted design
General cubicle characteristics
Tab. 6/1 summarizes the general cubicle characteristics.
The switch-disconnectors are fixed-mounted on the horizontal busbar system. Cable connection is effected directly
on the device front. The maximum cable cross sections that
can be connected are stated in the device catalogue. The
cables can be led into the cubicle from top or bottom.
1
The switch-disconnectors can be equipped with up to three
current transformers to enable feeder-related measurements. In order to implement cubicle-related summation
current measurements, the system provides the option to
install current transformers in the busbar system.
2
3
Tab. 6/1: General cubicle characteristics for fixed-mounted in-line design
Application
range
- Incoming feeders up to 630 A
- Outgoing cable feeders up to 630 A
Degrees of protection
- Up to IP31
- Up to IP43 - IP54 Ventilated, door with cut-out
Ventilated
Non-ventilated
- Cubicle height - Cubicle width 2,000, 2,200 mm
600, 800, 1,000 mm
Device compartment
- If cubicle width 600 mm - If cubicle width 800 mm - If cubicle width 1,000 mm Device compartment width 500 mm
Device compartment width 700 mm
Device compartment width 900 mm
Form of internal separation
- Form 1b, 2b Door, cubicle high
Design options
- In-line fuse switch-disconnectors 3NJ4 (3-pole)
- With or without current measurement
- Empty slot cover
Cubicle dimensions
4
5
6
7
Rating data of the cable feeders
Tab. 6/2 states the space requirements and the respective
rated current dependent on the in-line unit type.
8
Tab. 6/2: Rating data of the 3NJ4 cable feeders
Type
3NJ410
Nominal device
current
Space requirements of the inline unit
160 A
50 mm
Rated current 1)
at 35 °C ambient temperature
9
Non-ventilated
Ventilated
117 A
136 A
3NJ412
250 A
100 mm
200 A
220 A
3NJ413
400 A
100 mm
290 A
340 A
3NJ414
630 A
100 mm
380 A
460 A
1)
10
Rated current with fuse link = nominal device current
11
SIVACON S8 Planning Principles – Cubicles in fixed-mounted design
55
Additional built-in elements
If the busbar and cable connection positions in the cubicle
are identical, one of three possible additional built-in
elements (see Tab. 6/3) can be used. The possible arrangements are listed in Tab. 6/4.
Tab. 6/3: Dimensions if additional built-in elements are used
Device holder
Installation
depth
370 mm
Installation
height
625 mm (cubicle height 2,000
mm)
725 mm (cubicle height 2,200
mm)
ALPHA 8GK rapid
mounting kit for series- Height
mounted devices
2nd row in-line unit
size 00
450 mm (3 rows)
Data stated in Tab. 6/5 or Tab. 6/6
Tab. 6/4: Mounting location of additional built-in elements
Busbar position
Cable connection
Additional built-in
element installed
in the cubicle
Bottom
Bottom
Top
Top
Top
Bottom
Bottom
Top
Not possible
Top
Bottom
Not possible
Additional built-in elements for in-line units of size 00 in
2nd row
Mounting additional built-in elements for 3NJ4 in-line units
of size 00 is possible for cubicles up to degree of protection
IP31 and operation of the main in-line switch-disconnectors
through the door (door with cutout).
The additional in-line switch-disconnectors are operated
behind the door. This arrangement results in a smaller
width of the device compartment (Tab. 6/5). The rated data
of the cable feeders are stated in Tab. 6/6. The connection
is established directly at the switching device from top or
bottom. Due to the restricted connection compartment,
connections with cable cross sections up to 95 mm² are
possible.
Tab. 6/5: Device compartment for in-line units in the 2nd row
Cubicle width
Width of device compartment
600 mm
300 mm
800 mm
500 mm
1,000 mm
700 mm
Tab. 6/6: Rating data of the cable feeders for in-line units in the 2nd
row
Type
Nominal
device
current
Space
requirements
in-line unit
Max.
number
of
in-line
units
per
cubicle
Rated
current 1)
at 35 °C
ambient
temperature
10
95 A
14
74 A
Installation at the top in the cubicle
3NJ410
160 A
50 mm
Installation at the bottom in the cubicle
3NJ410
1)
160 A
50 mm
10
107 A
14
92 A
Rated current with fuse link = nominal device current
Equipment rules for 3NJ4 in-line fuse switchdisconnectors
Arrangement options for the in-line units in the cubicle:
•From left to right with in-line units decreasing in size
•From right to left with in-line units decreasing in size
The specified rated currents are applicable when the 3NJ4
in-line units are equipped with the largest possible fuse
links. When using smaller links, a corresponding utilization
(in percent) is permissible.
56
Example:
•3NJ414 in-line unit in a non-ventilated cubicle
(Tab. 6/2: 380 A)
•Equipped with 500 A link
Max. permissible continuous operational current =
= (380 A / 630 A) x 500 A = 300 A
SIVACON S8 Planning Principles – Cubicles in fixed-mounted design
6.2 Fixed-mounted design with
front cover
The front covers, which are easy to install, allow for the
implementation of cubicles with uniform front surfaces
(Fig. 6/2). Optionally, a cubicle or glass door can be used.
The profile bar design or flat copper design of the distribution busbar allows tapping in the smallest grids. Furthermore, connections to the distribution busbars by means of
cables, wires or busbars are possible without any need of
drilling or punching. This ensures maximum flexibility also
for later expansions.
1
2
General cubicle characteristics
Tab. 6/7 summarizes the general cubicle characteristics.
The switching devices are installed on modular device
holders of graduated depth. These can be equipped with
circuit-breakers, switch-disconnectors with fuses or modular installation devices. Different switching device groupings into one module are also possible. Modules are attached to the device holder and directly connected to the
cubicle busbar.
3
4
To the front, the devices are equipped with front covers.
Operation is effected through the cover.
5
The cable connection is effected at the device or, in cases
of higher requirements, at special connection terminals.
Through the cover, simple operation is possible directly at
the device in the cable connection compartment. For
individual expansion, the system offers freely assignable
device holders.
6
Fig. 6/2: Cubicles for fixed mounting with front door
Tab. 6/7: General cubicle characteristics for fixed-mounted cubicles with front door
7
Application
range
- Incoming feeders up to 630 A
- Outgoing cable feeders up to 630 A
- Modular installation devices
Degrees of protection
- Up to IP43 - IP54 Ventilated
Non-ventilated
Cubicle dimensions
- Cubicle height - Cubicle width (front connection in the cubicle)
2,000, 2,200 mm
1,000, 1,200 mm
Device compartment
- Height - Width 1,600, 1,800 mm
600 mm
Form of internal separation
- Form 1, 2b, 4a, 4b Door,
viewing door, cubicle high 1)
Design options
- Fixed-mounted module with front cover
- Mounting kit for modular installation devices
- Empty slot, device compartment
1)
8
9
10
Cubicle with degree of protection less than or equal to IP31 is also possible without a door
11
SIVACON S8 Planning Principles – Cubicles in fixed-mounted design
57
Vertical distribution busbar
The vertical distribution busbars with the phase conductors
L1, L2, L3 are arranged at the left in the cubicle. The PE, N
or PEN busbars are arranged in the cable connection compartment.
In the case of 4-pole feeders, the N conductor is allocated
to the phase conductors L1, L2, L3 at the back of the cubicle. Ratings are stated in Tab. 6/8.
Tab. 6/8: Rating data of the vertical distribution busbar
Distribution busbar
Cross section
650
mm2
1 x (40 mm x 10 mm)
2 x (40 mm x 10 mm)
905 A
1,100 A
865 A
1,120 A
Nonventilated
830 A
1,000 A
820 A
1,000 A
65 kA
65 kA
65 kA
65 kA
Rated short-time withstand
current Icw (1 sec) 2)
2)
mm2
Ventilated
400
Rated current at 35 °C ambient
temperature
1)
Flat copper 1)
Profile bar
Top main busbar position
Rated conditional short-circuit current Icc = 110 kA
Mounting
One or multiple switching device(s) is/are mounted on
device holders of graduated depth and connected to the
vertical distribution busbars with the incoming feeder side
(Fig. 6/3). To the front, the devices are equipped with front
covers. Operation is effected through the cover.
Fig. 6/3: Installation of switching devices in fixed-mounted cubicles with a front cover (cover opened)
Cable connection
For form 1, 2b and 4a, the cable connection is effected
directly at the switching device. The maximum cross sections that can be connected are stated in the device catalogues.
For form 4b, the cable connection is effected in the cable
connection compartment. Tab. 6/9 states the maximum
conductor cross sections and Fig. 6/4 shows a detail with
connections.
Tab. 6/9: Conductor cross sections in fixed-mounted cubicles with
a front door
Nominal feeder current Max. conductor cross section
≤ 250 A
120 mm2
> 250 A
240 mm2
Fig. 6/4: Cable connections in fixed-mounted cubicles with a front
door
58
SIVACON S8 Planning Principles – Cubicles in fixed-mounted design
Rating data of the cable feeders
Tab. 6/10 states the installation data of the switching
devices if used in fixed-mounted cubicles with a front door.
The thermal interaction of the outgoing feeders in the
cubicle has to be and is considered by specifying the rated
diversity factor (RDF):
Permissible continuous operational current (cable feeder) =
= rated current Inc x RDF
For the outgoing feeders in the cubicle, the rated diversity
factor RDF = 0.8 can be applied:
•regardless of the number of feeders in the cubicle
•regardless of the mounting position in the cubicle
For cubicles with a very high packing and/or power density,
a project-specific assessment is recommended. More
detailed information is available via your Siemens contact.
1
Tab. 6/10: Rating data of the cable feeders
Type
Nominal
device current
Number
per row
Module height
3-pole / 4-pole
3-pole
2
Rated current Inc
at 35 °C ambient temperature
4-pole
Non-ventilated
Ventilated
Fuse switch-disconnectors 1)
3NP1123
160 A
1
150 mm
-
106 A
120 A
3NP1123
160 A
4
300 mm
-
106 A
120 A
3NP1133
160 A
1
200 mm
-
123 A
133 A
3NP1133
160 A
3
300 mm
-
123 A
133 A
3NP1143
250 A
1
250 mm
-
222 A
241 A
3NP1153
400 A
1
300 mm
-
350 A
375 A
3NP1163
630 A
1
300 mm
-
480 A
530 A
3NP4010
160 A
1
150 mm
-
84 A
96 A
3NP4010
160 A
4
300 mm
-
84 A
96 A
3NP4070
160 A
1
200 mm
-
130 A
142 A
3NP4070
160 A
3
300 mm
-
130 A
142 A
3NP4270
250 A
1
250 mm
-
248 A
250 A
3NP4370
400 A
1
300 mm
-
355 A
370 A
3NP4470
630 A
1
300 mm
-
480 A
515 A
3NP5060
160 A
1
200 mm
-
84 A
96 A
3NP5060
160 A
3
350 mm
-
84 A
96 A
3NP5260
250 A
1
250 mm
-
248 A
250 A
3NP5360
400 A
1
300 mm
-
355 A
370 A
3NP5460
630 A
1
300 mm
-
480 A
515 A
3
4
5
6
Switch-disconnectors with fuses 1)
3KL50
63 A
1
250 mm
250 mm
61 A
63 A
3KL52
125 A
1
250 mm
250 mm
120 A
125 A
3KL53
160 A
1
250 mm
250 mm
136 A
143 A
3KL55
250 A
1
350 mm
350 mm
250 A
250 A
3KL57
400 A
1
350 mm
350 mm
345 A
355 A
3KL61
630 A
1
550 mm
550 mm
535 A
555 A
7
8
Circuit-breakers
3RV2.1
16 A
1
16 mm
-
12.7 A
14.1 A
3RV2.1
16 A
9
16 mm
-
12.7 A
14.1 A
3RV2.2
40 A
1
40 mm
-
27 A
31.5 A
3RV2.2
40 A
9
40 mm
-
27 A
31.5 A
3RV1.3
50 A
1
50 mm
-
36 A
40 A
3RV1.3
50 A
7
50 mm
-
36 A
40 A
3RV1.4
100 A
1
150 mm
-
71 A
79 A
3RV1.4
100 A
6
300 mm
-
71 A
79 A
3VL1
160 A
1
150 mm
200 mm
121 A
151 A
3VL1
160 A
4 / 3
350 mm
450 mm
121 A
151 A
3VL2
160 A
1
150 mm
200 mm
130 A
158 A
3VL2
160 A
4 / 3
350 mm
450 mm
130 A
158 A
3VL3
250 A
1
200 mm
250 mm
248 A
250 A
3VL4
400 A
1
250 mm
300 mm
400 A
400 A
3VL5
630 A
1
300 mm
350 mm
525 A
565 A
1)
9
10
11
Rated current with fuse link = nominal device current
SIVACON S8 Planning Principles – Cubicles in fixed-mounted design
59
Device compartments
The device compartment consists of a fixed device holder
with a uniform usable overall depth of 310 mm. The device
compartment is closed with a front cover. The five typical
module heights are: 200, 300, 400, 500 and 600 mm.
Mounting kits for modular installation devices
Thanks to the different mounting kits, one or more row(s)
of modular installation devices can be installed in the
switchboard. Tab. 6/11 states the configurations dependent
on the module height. The mounting kit (Fig. 6/5) comprises the 35 mm multi-profile rails for the mounting of
modular installation devices of size 1, 2 or 3 in accordance
with DIN 43880 and a front cover. The multi-profile rail
allows the SIKclip 5ST25 wiring system to be snapped on at
the back.
Tab. 6/11: Configuration data of the mounting kits for modular
installation devices
Installation
width
Number
of rows
Distance
between
rows
Module height
150 mm
150 mm
200 mm
200 mm
150 mm
300 mm
200 mm
400 mm
150 mm
450 mm
200 mm
600 mm
1
24 HP 1)
2
3
1)
HP = horizontal pitch = 18 mm
Fig. 6/5: Mounting kit for modular installation devices (without
cover)
60
SIVACON S8 Planning Principles – Cubicles in fixed-mounted design
6.3 Cubicle for customized
solutions
For individual configuration and flexible expansion of
cubicles, additional cubicles for customized solutions are
available for SIVACON S8 switchgear (Fig. 6/6). Their general characteristics are stated in Tab. 6/12 and the configuration data are described in Tab. 6/13.
1
2
3
4
5
6
7
Fig. 6/6: Cubicles for customized solutions
Tab. 6/12: General characteristics for cubicles for customized solutions
Application
range
- Fixed-mounted cubicle with mounting plate for individual configuration
- Use as cubicle expansion 1)
Degrees of protection
- Up to IP43 - IP54 Ventilated
Non-ventilated
Cubicle dimensions
- Cubicle height - Cubicle width
2,000, 2,200 mm
see Tab. 6/13 (cubicle design)
Device compartment
- Height - Width
1,600, 1,800 mm
see Tab. 6/13 (cubicle design)
Form of internal separation
- Form 1, 2b Door,
viewing door, cubicle high
Design options
- Mounting plate
- ALPHA 8GK rapid mounting kits 2)
- With / without main busbar
- With / without vertical distribution busbar
1)
2)
8
9
10
Expansion of cubicles to the left or right
Cubicle height 2,000 mm, rear main busbar position
11
SIVACON S8 Planning Principles – Cubicles in fixed-mounted design
61
Cubicle design
Tab. 6/13: Configuration data for cubicles for customized solutions
Separate cable connection
compartment on the right
Cubicle width
Width of device
compartment
Vertical distribution
busbar
Yes
1,000 mm 1) (600 mm +400 mm),
1,200 mm 1) (600 mm + 600 mm)
600 mm
Yes / No
200 2), 350 3), 400, 600, 800, 850 3),
1,000 mm
Corresponding to the cubicle
width
No
600 mm
Yes / No
No
600 mm
4)
1)
Front connection in the cubicle
2) Width 200 mm as cubicle expansion
3) Cubicle height 2,000 mm, single-front systems
4) Rear connection in the cubicle
Vertical distribution busbar
The vertical distribution busbars with the phase conductors
L1, L2, L3 are arranged at the left in the cubicle. The PE, N
or PEN busbars are arranged in the cable connection compartment. In the case of 4-pole feeders, the N conductor is
allocated to the phase conductors L1, L2, L3 at the back of
the cubicle. Ratings are stated in Tab. 6/14.
Tab. 6/14: Rating data of the vertical distribution busbar
Flat copper 1)
Distribution busbar
Profile bar
Cross section
400 mm2
650 mm2
1 x (40 mm x 10 mm)
2 x (40 mm x 10 mm)
Ventilated
905 A
1,100 A
865 A
1,120 A
Nonventilated
830 A
1,000 A
820 A
1,000 A
65 kA
65 kA
65 kA
65 kA
Rated current at 35 °C ambient
temperature
Rated short-time withstand
current Icw (1 sec) 2)
1)
2)
Top main busbar position
Rated conditional short-circuit current Icc = 110 kA
Mounting options
The dimensions and arrangement options for mounting
plates and ALPHA 8GK rapid mounting kits are stated in
Tab. 6/15.
More detailed information on the ALPHA 8GK rapid mounting kits is available in the relevant product catalogues.
Tab. 6/15: Configuration data on mounting options for cubicles for customized solutions
Mounting plates
Cubicle height
2,000 mm
2,200 mm
Main busbar
Overall height of mounting plate
No
1,600 mm
Yes
1,800 mm
No
2,000 mm
Yes
1,800 mm
Version
- Separated / unseparated
- Perforated / non-perforated
ALPHA 8GK rapid mounting kits
Cubicle height
2,000 mm
1)
62
Main busbar
Compartment
Height
Without
1,800 mm
Rear position
1,650 mm
No viewing door
SIVACON S8 Planning Principles – Cubicles in fixed-mounted design
Width
350 1), 600, 800 mm
Chapter 7
Reactive power compensation
7.1 Configuration and calculation
7.2 Separately installed compensation cubicles
66
68
7 Reactive power compensation
The cubicles for reactive power compensation (Fig. 7/1)
relieve transformers and cables, reduce transmission losses
and thus save energy. Dependent on the consumer structure, reactive power compensation is equipped with
non-choked or choked capacitor modules. The controller
module for electronic reactive power compensation can be
installed in the door. Tab. 7/1 summarizes the general
cubicle characteristics.
Fig. 7/1: Cubicle for reactive power compensation
Tab. 7/1: General characteristics of cubicles for reactive power compensation
64
Application range
- Controlled reactive power compensation
Degrees of protection
- Up to IP43 Ventilated
Cubicle dimensions
- Cubicle height - Width 2,000, 2,200 mm
800 mm
Device compartment
- Height - Width 1,600, 1,800 mm
600 mm
Form of internal separation
- Form 1, 2b Door, cubicle high
Design options
- Non-choked
- Choked 5.67 %, 7 %, 14 %
- With / without main busbar
- With connection to main busbar or with external connection
- With / without line-side switch-disconnector module as cut-off point between main busbars
and vertical distribution bar
SIVACON S8 Planning Principles – Reactive power compensation
Compensation modules
1
Dependent on the consumer type, non-choked and choked
capacitor modules are used for reactive power compensation. A module with fuse switch-disconnectors can optionally be installed to disconnect the capacitor modules
(Fig. 7/2) from the main busbar.
2
•Non-choked capacitor modules
Non-choked modules are mainly used for central compensation of reactive power with mainly linear consumers.
They are divided into several, separately switchable
capacitor modules. The reactive power controller installed
in the door enables adhering to the specified set cos j
even under varying load conditions.
•Choked capacitor modules
Choked modules have an additional inductance. They are
used for compensating reactive power in networks with
non-linear loads (15 - 20 % of the total load) and a high
harmonic component. In addition to capacitive reactive
power, choked modules also provide filtering of low-frequency harmonics.
3
4
5
Fig. 7/2: Capacitor modules for reactive power compensation
Audio frequency ripple control systems and
compensation
Ripple control signals can be used in the power supply
network to control power consumers remotely. The signals
for audio frequency ripple control systems (AF) are in the
range of 110 and 2,000 Hz. The dependency of the choking
level from the audio frequency suppressor is listed in
Tab. 7/2.
Using an audio frequency suppressor is required to prevent
suppressing ripple control signals from the network. The
audio frequency suppressor depends on the frequency of
the ripple control signal of the respective network operator
and must be adjusted if required. Special variants are
available on request.
6
Tab. 7/2: Choked capacitor modules with built-in audio frequency
suppressor
Choking rate
audio frequency suppressor
5.67 %
> 350 Hz
7%
> 250 Hz
14 %
> 160 Hz
7
8
9
10
11
SIVACON S8 Planning Principles – Reactive power compensation
65
7.1 Configuration and calculation
When cubicles with direct connection to the main busbar
are configured, the selection of capacitor modules depends
on the total power in this cubicle and the number of modules, as it becomes apparent in Tab. 7/3.
Tab. 7/3: Configuration of capacitor modules
Type
Cubicle
height
Compensation
power per cubicle
Number of
modules
Choked 5.67 %, 7 %, 14 % 1)
Non-choked
Without switchdisconnector
With switchdisconnector
Rear busbar
position
Top busbar
position
Reactive power per cubicle: 600 kvar / 400 V / 50 Hz
2,200 mm
600 kvar
12 x 50 kvar
+
-
-
-
Cubicle power: max. 500 kvar / 400 V, 525 V, 690 V / 50 Hz
2,000 mm,
2,200 mm
2,200 mm
50 kvar
2 x 25 kvar
+
+
+
+
100 kvar
4 x 25 kvar
+
+
+
+
150 kvar
6 x 25 kvar
+
+
+
+
200 kvar
4 x 50 kvar
+
+
+
+
250 kvar
5 x 50 kvar
+
+
+
+
300 kvar
6 x 50 kvar
+
+
+
+
350 kvar
7 x 50 kvar
+
-
+
+
400 kvar
8 x 50 kvar
+
-
+
+ 2)
400 kvar
8 x 50 kvar
+
+
+
+ 2)
450 kvar
9 x 50 kvar
+
-
+ 2)
-
-
2)
-
500 kvar
10 x 50 kvar
+
+
1)
14% choked only possible for 400 V
2) Can only be implemented with degree of protection IP30 / IP31
Legend:
+possible
- not possible
When calculating the required compensation power, you
can proceed as follows:
1. The electricity bill of the power supplier shows the
consumption of active energy in kWh and reactive energy
in kvarh. The distribution system operator (DSO) usually
requires a cos φ between 0.90 and 0.95. To avoid costs, the
value should be compensated to a cos φ near 1. Where
tan φ = reactive energy / active energy
2. From Tab. 7/4 the conversion factor F must be determined by compensation in dependency of the original
value for tan φ1 (row) and the desired cos φ2 (column).
3. The compensation power required is the product of the
conversion factor F and the mean active power consumption Pm
Compensation power Pcomp = F x Pm
66
Example:
Reactive energy Wb = 61.600 kvarh per month
Active energy Ww = 54.000 kWh per month
tan φ1 = Wb / Ww = 1.14 (cos φ1 = 0.66)
Mean power consumption Pm
= active energy / working time
Pm = 54,000 kWh / 720 h
= 75 kW
Desired power factor cos φ2 = 0.95
Conversion factor F (tan φ1 = 1.14; cos φ2 = 0.95)
F
= 0.81
Compensation power Pcomp = F x Pm = 0.81 x 75 kW
Pcomp = 60 kvar
SIVACON S8 Planning Principles – Reactive power compensation
Tab. 7/4: Conversion factors F for phase angle adjustments
Actual value
given
1
Conversion factor F
tan j1
cos j1
cos j2 =
0.70
cos j2 =
0.75
cos j2 =
0.80
cos j2 =
0.82
cos j2 =
0.85
cos j2 =
0.87
cos j2 =
0.90
cos j2 =
0.92
cos j2 =
0.95
cos j2 =
0.97
cos j2 =
1.00
4.9
0.20
3.88
4.02
4.15
4.20
4.28
4.33
4.41
4.47
4.57
4.65
4.90
3.87
0.25
2.85
2.99
3.12
3.17
3.25
3.31
3.39
3.45
3.54
3.62
3.87
3.18
0.30
2.16
2.30
2.43
2.48
2.56
2.61
2.70
2.75
2.85
2.93
3.18
2.68
0.35
1.66
1.79
1.93
1.98
2.06
2.11
2.19
2.25
2.35
2.43
2.68
2.29
0.40
1.27
1.41
1.54
1.59
1.67
1.72
1.81
1.87
1.96
2.04
2.29
2.16
0.42
1.14
1.28
1.41
1.46
1.54
1.59
1.68
1.74
1.83
1.91
2.16
2.04
0.44
1.02
1.16
1.29
1.34
1.42
1.47
1.56
1.62
1.71
1.79
2.04
1.93
0.46
0.91
1.05
1.18
1.23
1.31
1.36
1.45
1.50
1.60
1.68
1.93
1.83
0.48
0.81
0.95
1.08
1.13
1.21
1.26
1.34
1.40
1.50
1.58
1.83
1.73
0.50
0.71
0.85
0.98
1.03
1.11
1.17
1.25
1.31
1.40
1.48
1.73
1.64
0.52
0.62
0.76
0.89
0.94
1.02
1.08
1.16
1.22
1.31
1.39
1.64
1.56
0.54
0.54
0.68
0.81
0.86
0.94
0.99
1.07
1.13
1.23
1.31
1.56
1.48
0.56
0.46
0.60
0.73
0.78
0.86
0.91
1
1.05
1.15
1.23
1.48
1.40
0.58
0.38
0.52
0.65
0.71
0.78
0.84
0.92
0.98
1.08
1.15
1.40
1.33
0.60
0.31
0.45
0.58
0.64
0.71
0.77
0.85
0.91
1
1.08
1.33
1.27
0.62
0.25
0.38
0.52
0.57
0.65
0.70
0.78
0.84
0.94
1.01
1.27
1.20
0.64
0.18
0.32
0.45
0.50
0.58
0.63
0.72
0.77
0.87
0.95
1.20
1.14
0.66
0.12
0.26
0.39
0.44
0.52
0.57
0.65
0.71
0.81
0.89
1.14
1.08
0.68
0.06
0.20
0.33
0.38
0.46
0.51
0.59
0.65
0.75
0.83
1.08
1.02
0.70
–
0.14
0.27
0.32
0.40
0.45
0.54
0.59
0.69
0.77
1.02
0.96
0.72
0.08
0.21
0.27
0.34
0.40
0.48
0.54
0.63
0.71
0.96
0.91
0.74
0.03
0.16
0.21
0.29
0.34
0.42
0.48
0.58
0.66
0.91
0.86
0.76
–
0.11
0.16
0.24
0.29
0.37
0.43
0.53
0.60
0.86
0.80
0.78
0.05
0.1
0.18
0.24
0.32
0.38
0.47
0.55
0.80
0.75
0.8
–
0.05
0.13
0.18
0.27
0.32
0.42
0.50
0.75
0.70
0.82
–
0.08
0.13
0.21
0.27
0.37
0.45
0.70
0.65
0.84
0.03
0.08
0.16
0.22
0.32
0.40
0.65
0.59
0.86
–
0.03
0.11
0.17
0.26
0.34
0.59
0.54
0.88
–
0.06
0.11
0.21
0.29
0.54
0.48
0.9
–
0.06
0.16
0.23
0.48
0.43
0.92
–
0.10
0.18
0.43
0.36
0.94
0.03
0.11
0.36
0.29
0.96
–
0.01
0.29
0.20
0.98
–
0.20
2
3
4
5
6
7
8
9
10
11
SIVACON S8 Planning Principles – Reactive power compensation
67
7.2 Separately installed
compensation cubicles
fuse and connecting cable must be factored in. For their
configuration data, please refer to Tab. 7/5.
When compensation cubicles are configured, which are to
be installed separated from the switchboard, the back-up
Tab. 7/5: Connecting cables and back-up fuses for separately installed
compensation cubicles
Reactive
power
per cubicle
Nominal voltage 400 V AC / 50 Hz
Nominal voltage 525 V AC / 50 Hz
Rated current
Fuse
per phase
L1, L2, L3
Cable cross
section
per phase
L1, L2, L3
Max.
21 kvar
30.3 A
35 A
25 kvar
36.1 A
30 kvar
43.3 A
Nominal voltage 690 V AC / 50 Hz
Rated
current
Fuse
per phase
L1, L2, L3
Cable cross
section
per phase
L1, L2, L3
Rated
current
Fuse
per phase
L1, L2, L3
Cable cross
section
per phase
L1, L2, L3
10 mm2
-
-
-
-
-
-
63 A
16 mm2
27.5 A
50 A
10 mm2
20.9 A
50 A
10 mm2
63 A
16 mm2
-
-
-
-
-
-
mm2
35 kvar
50.5 A
80 A
25
-
-
-
-
-
-
40 kvar
57.7 A
100 A
35 mm2
-
-
-
-
-
-
mm2
-
-
-
-
-
-
54.9 A
100 A
35 mm2
41.8 A
63 A
16 mm2
45 kvar
64.9 A
100 A
35
50 kvar
72.2 A
100 A
35 mm2
160 A
70
mm2
-
-
-
-
-
-
mm2
-
-
-
-
-
-
82.5 A
125 A
35 mm2
62.7 A
100 A
25 mm2
-
-
-
-
-
-
110 A
200 A
95 mm2
83.6 A
125 A
35 mm2
137 A
200 A
95
mm2
105 A
160 A
70 mm2
165 A
250 A
120 mm2
126 A
200 A
95 mm2
-
-
-
-
-
-
192 A
300 A
150 mm2
146 A
250 A
120 mm2
mm2
167 A
250 A
150 mm2
60 kvar
86.6 A
70 kvar
101 A
160 A
70
75 kvar
108 A
160 A
70 mm2
mm2
80 kvar
115 A
200 A
95
100 kvar
144 A
250 A
120 mm2
mm2
125 kvar
180 A
300 A
150
150 kvar
217 A
355 A
2 x 70 mm2
mm2
160 kvar
231 A
355 A
2 x 70
175 kvar
253 A
400 A
2 x 95 mm2
200 kvar
289 A
500 A
250 kvar
361 A
630 A
220 A
355 A
185
2 x 150 mm2
275 A
400 A
2 x 95 mm2
2 x 120
1)
300 kvar
433 A
2 x 355 A
350 kvar
505 A
2 x 400 A 1)
400 kvar
577 A
450 kvar
650 A
2 x 500 A
500 kvar
722 A
866 A
600 kvar
mm2
209 A
315 A
185 mm2
mm2
251 A
400 A
2 x 95 mm2
2 x 120 mm2
330 A
500 A
2 x 120
4 x 95 mm2 2)
385 A
630 A
2 x 150 mm2
293 A
500 A
2 x 500 A 1)
4 x 120 mm2 2)
440 A
2 x 355 A 1)
2 x 185 mm2
335 A
500 A
1)
mm2 2)
495 A
2 x 400 A
1)
2 x 630 A 1)
4 x 150 mm2 2)
550 A
2 x 500 A 1)
1)
mm2 2)
-
-
2 x 630 A
2 x 185
mm2
4 x 120
4 x 185
2 x 120 mm2
377 A
2 x 315 A
1)
2 x 185 mm2
4 x 120 mm2
418 A
2 x 315 A 1)
2 x 185 mm2
-
-
-
-
4 x 95
mm2
1)
For this type of protection the information plate "Caution, reverse voltage through parallel cable" is recommended. A circuit-breaker can be used to avoid the
problem with parallel fuses.
2) Connection possibility for separately installed compensation cubicles: max. 2 x 240 mm2.
Recommendation for 4 parallel cables per phase: Use separate incoming feeder cubicle and power factor correction cubicle with main busbar.
68
SIVACON S8 Planning Principles – Reactive power compensation
Chapter 8
Further planning notes
8.1Installation
8.2 Weights and power loss
8.3 Environmental conditions
70
74
75
8 Further planning notes
In the planning stage, installation conditions such as
clearances, width of maintenance gangways, weights,
underground, as well as environmental conditions, for
example climatic conditions, and power loss must already
be considered. In particular the following aspects should be
kept in mind when planning a switchboard:
•Maximally permitted equipment of a cubicle (for
example, number of in-line switch-disconnectors considering size and load; manufacturer specifications must
be observed!).
•Minimum cubicle width, considering component density,
conductor cross sections and number of cables (a wider
terminal compartment may have to be selected or an
additional cubicle may have to be configured)
•Device reduction factors must be observed according to
manufacturer specifications! Mounting location, ambient
temperature and nominal current play an important part
(particular attention in case of currents greater than
2,000 A!).
•The dimensioning of compensation systems is very much
governed by the location of use (office, production) and
the power supply conditions (harmonic content, DSO
specifications, audio frequency etc.). Up to about 30% of
the transformer output can be expected as a rough
estimate (in industrial environments) in the absence of
concrete criteria for planning. If switched-mode power
supply units are increasingly used, for example in ICT
equipment in office rooms, the power factor may even
turn capacitive. In this context, it must be observed that
these power supply units frequently cause system perturbations in the form of harmonics, which can be reduced
by passive or active filters.
•The decision in favour of central or distributed implementation of compensation is governed by the network
configuration (load center of reactive current sources). In
case of distributed arrangement of the compensation
systems, appropriate outgoing feeders (in-line switch-disconnectors, circuit-breakers etc.) shall be provided in the
switchboard.
•Generator-supplied power systems must not be compensated if problems may arise in generator control as a
result of compensation control (disconnecting the compensation system during switch-over to generator mode
or static, generator-tuned compensation is possible)
•Choking of a compensation system depends on the
power system requirements as well those of the client
and the DSO.
8.1 Installation
Installation – clearances and gangway widths
When low-voltage switchboards are installed, the minimum
clearances between switchboards and obstacle as specified
100 mm
100 mm 1) (150 mm 2,3))
by the manufacturer must be observed (Fig. 8/1). The
minimum dimensions for operating and maintenance
100 mm 4)
2,000 mm 1)
Switchboard
Leave a space of at least 400 mm
above the cubicles!
1)
2)
3)
4)
Back-to-back installation: 200 mm
Only for IP43 (projecting roof plate)
Only for IP43 and back-to-back installation: 300 mm
When the switchboard is erected (positioning of the right-hand cubicle),
the projection of the busbar connecting lugs must be paid attention to.
Top busbar position:
90 mm projection -> recommended wall clearance > 150 mm
Rear busbar position:
54 mm projection -> -> recommended wall clearance > 100 mm
Attention: All dimensions refer to the frame dimensions !
(nominal cubicle size)
Fig. 8/1: Clearances to obstacles
70
SIVACON S8 Planning Principles – Further planning notes
600 mm
700 mm
1) Minimum
700 mm
600 mm
700 mm
700 mm
height of passage under covers or enclosures
Fig. 8/2: Maintenance gangway widths and passage heights
gangways according to IEC 60364-7-729 must be taken
into account when planning the space required (Fig. 8/2).
When using an lift truck for the insertion of circuit-breakers,
the minimum gangway widths must be matched to the
dimensions of the lift truck! Reduced gangway width
within the range of open doors must be paid attention to
(Fig. 8/3). With opposing switchboard fronts, constriction
by open doors is only accounted for on one side. SIVACON
S8 doors can be fitted so that they close in escape direction. The door stop can easily be changed later. Moreover,
the standard requires a minimum door opening angle of
90°.
Altitude
The altitude of installation must not be above 2,000 m
above sea level.
Switchboards and equipment which are to be used in
higher altitudes require that the reduction of dielectric
strength, the equipment switching capacity and the cooling
effect of the ambient air be considered. Further information is available from your Siemens contact.
1
Minimum
maintenance 600 mm
gangway width
1)
Escape direction
2
2)
3
1)
Circuit-breaker in
the “completely extracted and isolated” position
2)
Handles (e.g. for controls or equipment)
4
Minimum
maintenance 500 mm
gangway width
Escape direction
5
1)
2)
6
1)
Circuit breaker fully withdrawn
2)
Door in arrest position
Minimum
maintenance 500 mm
gangway width
7
8
Escape direction
Unfolded
swivel frame
behind the door
9
10
11
Fig. 8/3: Minimum widths of maintenance gangways in accordance
with IEC 60364-7-729
SIVACON S8 Planning Principles – Further planning notes
71
Single-front and double-front systems
One or more double-front units can be combined into a
transport unit. Cubicles within a transport unit have a
horizontal through-busbar. Cubicles cannot be separated.
In the single-front system, the switchboard cubicles stand
next to each other in a row (Fig. 8/4 top). One or more
cubicles can be combined into a transport unit. Cubicles
within a transport unit have a horizontal through-busbar.
Cubicles cannot be separated.
Apart from the following exceptions, a cubicle composition
within a double-front unit is possible for all designs.
The following cubicles determine the width of the double-front unit as cubicle (1) and should only be combined
with a cubicle for customized solutions without cubicle busbar system:
•Circuit-breaker design - longitudinal coupler
•Circuit-breaker design - incoming/outgoing feeder
4,000 A, cubicle width 800 mm
•Circuit-breaker design - incoming/outgoing feeder
5,000 A
•Circuit-breaker design - incoming/outgoing feeder
6,300 A
In the double-front system, the cubicles stand in a row next
to and behind one another (Fig. 8/4). Double-front systems
are only feasible with a rear busbar position. The main
feature of a double-front installation is its extremely economical design: the branch circuits on both operating
panels are supplied by one main busbar system only.
A double-front unit consists of a minimum of two and a
maximum of four cubicles. The width of the double-front
unit is determined by the widest cubicle (1) within the
double-front unit. This cubicle can be placed at the front or
rear side of the double-front unit. Up to three more cubicles
(2), (3), (4) can be placed at the opposite side. The sum of
the cubicle widths (2) to (4) must be equal to the width of
the widest cubicle (1).
Cubicles with a width of 350 mm or 850 mm are not provided for within double-front systems.
Single-front installations
Front
connection
With main busbar
position at the top
Rear
connection
With main busbar
position at the rear
Double-front installations
(1)
With main busbar
position at the rear
(2)
(3)
(4)
Double-front units
Rear panel
Fig. 8/4: Cubicle arrangement for single-front (top) and double-front systems (bottom)
72
SIVACON S8 Planning Principles – Further planning notes
Door
Foundation frame and floor mounting
The foundation generally consists of concrete, with a cutout for cable or busbar entry. The cubicles are positioned
on a foundation frame made of steel girders. In addition to
the permissible deviations of the installation area (Fig. 8/5),
it must be ensured that
For the mounting point on the foundation frame, please
see Fig. 8/8 for single-front and Fig. 8/9 for double-front
systems. Fig. 8/10 shows dimensions of the corner cubicle.
Dimensions in mm are referred to the cubicle widths W and
cubicle depth D.
Alternative to A
1
25
•The foundation is precisely aligned
•The butt joints of more than one foundation frame are
smooth
•The surface of the frame is in the same plane as the
surface of the finished floor
Two typical examples for switchboard installation are:
•Installation on a raised floor (Fig. 8/6)
•Foundation frame mounted on concrete (Fig. 8/7)
4 x Ø14.8
A
A
D -50 D
2
350
25
W - 50
W -150
75
3
W +2 -1
All dimensions in mm
Fig. 8/8: Mounting points of the single-front system
4
350
1 mm / m
Only for installations with more
stringent requirements (e.g. seismic
requirements and offshore installations)
1 mm / m
25
Switchboard
350
4 holes Ø14.8
Fig. 8/5: Permissible deviations of the installation area
W -150
75
W +2 -1
All dimensions in mm
7
Fig. 8/9: Mounting points of the double-front system
25
Fig. 8/6: Installation on raised floors
Field depth
B
500
350
600
450
800 / 1,200
650
All dimensions in mm
B
75
D
500
600
800
8
Holes
7 x Ø14.8
M12
9
25
Foundation frame,
e.g. U-shaped section DIN 1026
D
Screed
6
25
W - 50
Floor plate,
inserted
Box girder of
foundation
Adjustable post
Concrete floor
5
D -50 D
25
100
Heavy-duty dowel
Concrete floor
350
100
Fig. 8/7: Foundation frame mounted on concrete
10
B
61
75
Alignment shims
103.6
350
Bolt
D
25
11
Fig. 8/10: Mounting points of the corner cubicle
SIVACON S8 Planning Principles – Further planning notes
73
8.2 Weights and power loss
Weight data in Tab. 8/1 is for orientation only. The same
applies to the power losses specified in Tab. 8/2. This data
represents approximate values for a cubicle with the main
circuit of functional units for determination of the power
loss to be dissipated from the switchboard room. Power
losses of possibly installed additional auxiliary devices must
also be taken into consideration. Further information is
available from your Siemens contact.
Tab. 8/1: Weights (guide values) for a selection of cubicles
Cubicle dimensions
Height
Width
Nominal current
Depth
Average weights of the cubicles including busbar
(without cable)
Circuit-breaker cubicles
400 mm
600 mm
600 mm
2,200 mm
800 mm
800 mm
1,000 mm
500 mm
600 mm
600 mm
800 mm
800 mm
340 kg
630 - 1,600 A
390 kg
510 kg
2,000 - 3,200 A
545 kg
4,000 A
770 kg
4,000 - 6,300 A
915 kg
Universal / fixed-mounted design
2,200 mm
1,000 mm
500 mm
400 kg
600 mm
470 kg
800 mm
590 kg
In-line design 3NJ4 (fixed-mounted)
2,200 mm
600 mm
600 mm
360 kg
800 mm
800 mm
470 kg
500 mm
415 kg
600 mm
440 kg
800 mm
480 kg
500 mm
860 kg
600 mm
930 kg
800 mm
1,050 kg
In-line design 3NJ6 (plug-in)
2,200 mm
1,000 mm
Reactive power compensation
2,200 mm
800 mm
Tab. 8/2: Power losses of SIVACON S8 cubicles (guide values)
Circuit-breaker design with
3WL (withdrawable unit)
74
Power loss (approx. value) PV
100% rated
current
80 % rated
current
Circuit-breaker design with
3VL (withdrawable unit)
Power loss (approx. value) PV
100% rated
current
80 % rated
current
3WL1106 (630 A, FS I)
215 W
140 W
3VL630 (630 A)
330 W
210 W
3WL1108 (800 A, FS I)
345 W
215 W
3VL800 (800 A)
440 W
290 W
3WL1110 1,000 A, FS I)
540 W
345 W
3VL1250 (1,250 A)
700 W
450 W
1,140 W
3WL1112 (1,250 A, FS I)
730 W
460 W
3VL1600 (1,600 A)
3WL1116 (1,600 A, FS I)
1,000 W
640 W
Fixed-mounted design
PV = approx. 600 W
3WL1220 (2,000 A, FS II)
1,140 W
740 W
In-line design 3NJ4 (fixedmounted)
PV = approx. 600 W
3WL1225 (2,500 A, FS II)
1,890 W
1,210 W
In-line design 3NJ6 (plug-in)
3WL1232 (3,200 A, FS II)
3,680 W
2,500 W
Withdrawable-unit design
3WL1340 (4,000 A, FS III)
4,260 W
2,720 W
Reactive power compensation Power loss (approx. value) PV
730 W
PV = approx. 1,500 W
PV = approx. 600 W
3WL1350 (5,000 A, FS III)
5,670 W
3,630 W
Non-choked
1.4 W/kvar
3WL1363 (6,300 A, FS III)
8,150 W
5,220 W
Choked
6.0 W/kvar
SIVACON S8 Planning Principles – Further planning notes
8.3 Environmental conditions
The climate and other external conditions (natural foreign
substances, chemically active pollutants, small animals)
may affect the switchboard to a varying extent. The influence depends on the air-conditioning equipment of the
switchboard room.
According to IEC 61439-1, environmental conditions for
low-voltage switchboards are classified as:
•Normal service conditions (IEC 61439-1,
section 7.1)
•Special service conditions (IEC 61439-1,
section 7.2)
SIVACON S8 switchboards are intended for use in the
normal environmental conditions described in Tab. 8/3.
If special service conditions prevail (Tab. 8/4), special
agreements between the switchboard manufacturer and
the user must be reached. The user must inform the switchboard manufacturer about such extraordinary service
conditions.
Special service conditions relate to the following, for example:
•Data about ambient temperature, relative humidity and/
or altitude if this data deviates from the normal service
conditions
•The occurrence of fast temperature and/or air pressure
changes, so that extraordinary condensation must be
expected inside the switchboard
•An atmosphere which may contain a substantial proportion of dust, smoke, corrosive or radioactive components, vapours or salt (e.g. H2S, NOx, SO2, chlorine)
1
The occurrence of severe concussions and impacts is considered in the section "Resistance to internal arcs / seismic
safety".
2
In case of higher concentrations of pollutants (Class > 3C2)
pollutant reducing measures are required, for example:
•Air-intake for service room from a less contaminated
point
•Expose the service room to slight excess pressure (e.g.
injecting clean air into the switchboard)
•Air conditioning of switchboard rooms (temperature
reduction, relative humidity < 60%, if necessary, use
pollutant filters)
•Reduction of temperature rise (oversizing of switching
devices or components such as busbars and distribution
bars)
3
4
Further information is available from your Siemens contact.
5
6
Tab. 8/3: Normal service conditions for SIVACON S8 switchboards
Environmental
conditions
Class
Environmental parameters including their limit values
(Definition acc. to IEC 60721-3-3)
Low air temperature
-5 °C 1),3)
High air temperature
+40 °C 3)
+35 °C (24 h mean) 2),3)
Low relative humidity
5%
High relative humidity
95 %
Examples for relation (air temperature - air humidity)
Climatic
3K4
Measures
8
at 40 °C: 50% 3)
at 20 °C: 90 % 3)
Low absolute humidity
1g/m3
High absolute humidity
29 g/m3
Speed of temperature change
7
0.5°C min.
Low air pressure
70 kPa
High air pressure
106 kPa
9
700 W/m2
Sunlight
Heat radiation
None
Condensation
possible
Wind-borne precipitation
10
Install switchboard
heating
No
See special service
conditions
Water (except rain)
Ice formation
11
No
1) According to IEC 60721-3-3, a minimum temperature of +5 °C is permissible.
2) Higher values are permissible on request (see rating tables)
3) Data in accordance with IEC 61439-1; any other, not identified values in accordance with IEC 60721-3-3
SIVACON S8 Planning Principles – Further planning notes
75
Tab. 8/4: Special service conditions for SIVACON S8 switchboards
Environmental
conditions
Class
Environmental parameters including their limit values
(Definition acc. to IEC 60721-3-3)
Sea salt
Chemically
active
substances
3C2
Presence of salt mist
Mean value
Limiting value
Sulphur dioxide SO2
0.3 mg/m3
1.0 mg/m3
Hydrogen sulphide H2S
0.1 mg/m3
0.5 mg/m3
0.1
mg/m3
0.3 mg/m3
Hydrogen chloride HCl
0.1
mg/m3
0.5 mg/m3
Hydrogen fluoride
0.01 mg/m3
0.03 mg/m3
Ammonia NH3
1.0 mg/m3
3.0 mg/m3
Ozone O3
0.05 mg/m3
0.1 mg/m3
mg/m3
1.0 mg/m3
Chlorine Cl2
Nitrogen oxides NOx
3Z1
Additional
climatic
environmental
conditions
Measures
0.5
on request
Heat radiation is negligible
3Z7
Dripping water in accordance with IEC 60068-2-18
IPX1
3Z9
Splashing water in accordance with IEC 60068-2-18
IPX4
3B2
Flora
Presence of mould, fungus, etc.
Fauna
Presence of rodents and other animals
harmful to products, excluding termites
Sand in air
3S1
Mechanically
active
substances
Dust (suspension)
Dust (sedimentation)
3S2
0.01 mg/m3
< IP5X
0.4 mg/(m3∙h)
Sand in air
300 mg/m3
Dust (suspension)
0.4 mg/m3
Dust (sedimentation)
≥ IP4X including
protection of the
cable basement
15
≥ IP5X
mg/(m3∙h)
Conditions for transport, storage and installation
If the ambient conditions for transport, storage or switchboard installation deviate from the normal service conditions listed in Tab. 8/4 (for example an excessively low or
high value for temperature or air humidity), the measures
76
SIVACON S8 Planning Principles – Further planning notes
required for proper treatment of the switchboard must be
agreed upon between manufacturer and client.
Chapter 9
Conforming to standards and designverified
9.1 The product standard IEC 61439-2
78
9.2 Arc resistance
79
9.3 Seismic safety and seismic
requirements81
9.4 Declarations of conformity and
certificates
83
9 Conforming to standards and designverified
9.1 The product standard
IEC 61439-2
Low-voltage switchboards, or "power switchgear and
controlgear assemblies" according to the standard, are
developed and manufactured according to the specifications of IEC 61439-2 and their compliance with the standard is verified. To prove the suitability of the switchboard,
this standard requires two essential types of verification –
design verification and routine verification. Design verifications are tests accompanying development, which must be
performed by the original manufacturer (designer). Routine
verifications must be performed by the manufacturer of the
power switchgear and controlgear assembly (switchboard
manufacturer) on every manufactured switchboard prior to
delivery.
Design verification test
The SIVACON S8 switchboard ensures safety for man and
machine by means of design verification (Tab. 9/1) by
testing in accordance with IEC 61439-2. Its physical properties are rated in the test area both for operating and fault
conditions and ensure maximum personal safety and
system protection. These design verifications and routine
verifications are a pivotal part of quality assurance and
constitute the pre-requisite for CE marking in accordance
with EC Directives and legislation.
Verification of temperature rise
One of the most important verification procedures is the
"verification of temperature rise". In this procedure, the
switchboard's suitability for temperature rises owing to
power loss is verified. Because of ever rising current ratings
and concurrently increasing requirements of degree of
protection and internal separation, this is one of the greatest challenges switchboards are confronted with. According
to the standard, this verification can be performed by
calculation up to a rated current of 1,600 A. For SIVACON
S8, this verification is always performed by testing. Rules
for the selection of test pieces (worse case test) and the
testing of complete assemblies ensure that the entire
product range is systematically covered and that this verification always includes the associated devices. This means
that testing randomly selected test pieces suffices no less
than replacing a device without repeating the test.
Tab. 9/1: Test for the design verification in accordance with IEC 61439-2
The table shows all verifications required by the standard.
They can be delivered by three alternative possibilities.
Verification by
testing
Verification by
calculation
Verification by
construction rules
3. Creepage distances and clearances
ü
ü
ü
ü
ü
ü
4. Protection against electric shock
and integrity of protective circuits
ü
ü 1)
ü 1)
5. Incorporating equipment
ü
ü
ü
ü
ü
-
ü
ü
ü
ü 2)
max. 1,600 A 3)
max. 630 A 3)
Conditional
Conditional
-
ü
-
1. Strength of solid matters and components
2. Degree of protection of enclosures
6. Internal electric circuits and connection
7. Connections for conductors entered from the outside
8. Dielectric properties
9. Temperature rise limits
10. Short-circuit strength
11. Electromagnetic compatibility (EMC)
12. Mechanical function
1)
2)
3)
78
Effectivity of the assembly in case of external faults
Only impulse withstand voltage
Comparison with an already tested construction
SIVACON S8 Planning Principles – Conforming to standards and design-verified
9.2 Arc resistance
1
An internal arc is one of the most dangerous faults inside
switchboards with extremely serious consequences – in
particular because personal safety is affected. Internal arcs
may be caused by wrong rating, decreasing insulation,
pollution as well as handling mistakes. Their effects, caused
by high pressure and extremely high temperatures, can
have fatal consequences for the operator and the system
which may even extend to the building.
2
An arc-resistant assembly consists of arc-free and/or arc-resistant zones. An arc-free zone is defined as part of a circuit
within the assembly where it is not possible to apply an
igniter wire without destroying the insulating material of
the conductors, in the insulated main busbar for SIVACON S8,
for example (Fig. 9/1). An arc-resistant zone is defined as
part of a circuit where an igniter wire can be applied and
which fulfils all applicable criteria for test assessment, such
as the main busbar compartment of the SIVACON S8 with
arc barriers (Fig. 9/2). If the assembly is supplied by a
transformer, the permissible arc duration should generally
not exceed 0.3 s in order to enable disconnection by a
high-voltage protection device.
The test of low-voltage switchboards under arcing conditions is a special test in accordance with IEC/TR 61641. For
SIVACON S8 low-voltage switchboards, personal safety was
verified by testing under arcing conditions.
3
4
5
Fig. 9/1: Insulated main busbar in the SIVACON S8
(optional N insulation)
6
Active and passive protective measures prevent internal
arcs and thus personal injury or limit their effects within
the switchboard:
•Insulation of live parts (e.g. busbars)
•Uniform user interfaces and displays with integrated
operating error protection
•Reliable switchboard dimensioning
•Arc-resistant hinge and lock systems
•Safe operating (moving) of withdrawable units or circuitbreakers behind closed door
•Protective measures in air vents
•Arc barriers
•Arc detection systems combined with fast disconnection
on internal arcs
7
8
9
The effectivity of the measures described is proven by
countless, comprehensive arcing fault tests under "worst
case" conditions performed on a great variety of cubicletypes and functional units.
10
Fig. 9/2: Arc barrier in SIVACON S8
11
SIVACON S8 Planning Principles – Conforming to standards and design-verified
79
System characteristics under arcing conditions
The arcing concept of SIVACON S8
The following data must be provided by the assembly
manufacturer:
•Rated operating voltage Ue
•Permissible short-circuit current under arcing conditions
Ip arc and the associated permissible arcing time tarc or
•Permissible conditional short-circuit current under arcing
conditions Ipc arc
Siemens has developed a graded concept which comprises
the requirements of arc resistance SIVACON S8 may be
subjected to. The arc levels (Tab. 9/3) describe the limitation of effects of an internal arc on the system or system
components of the SIVACON S8.
Corresponding characteristics for SIVACON S8 are given in
Tab. 9/2.
In addition, to include system protection, the defined areas
(e.g. cubicle, compartment) must be given to which the
effects of the internal arc shall be limited. The properties of
current-limiting devices (e.g. current-limiting circuit-breakers or fuses) which are required for circuit protection must
be specified if applicable.
Assessment criteria for personal safety and system
protection
Personal safety is ensured if the following five criteria are
fulfilled:
1. Properly secured doors, covers, etc., must not open.
2. Parts (of the assembly) that are potentially hazardous
must not fly off.
3. The impact of an internal arc must not produce any holes
in the freely accessible outer parts of the enclosure as a
result of burning or other effects.
4. Vertically applied indicators must not ignite.
5. The PE circuit for parts of the enclosure that can be
touched must still be functional.
System protection is ensured if the five above-mentioned
criteria are fulfilled plus criterion 6.
Tab. 9/2: SIVACON S8 system characteristics under arcing
conditions
Rated operating voltage Ue
Max. 690 V
Prospective short-circuit current under arcing
conditions Ip,arc
Max. 100 kA
Arcing time tarc
Max. 300 ms
Tab. 9/3: SIVACON S8 arc levels (system areas to which the internal
arc is limited are marked in orange)
Level 1
Personal safety
without extensive
limitation of the
arcing fault effects
within the
installation.
Level 2
Personal safety
with extensive
limitation of the
arcing fault effects
to one cubicle or
double-front unit.
6. The internal arc must be limited to a defined area and
there will be no re-ignition in adjacent areas.
Suitability for restricted continued service (additional
criterion 7):
7. Emergency operation of the assembly must be possible
after the fault has been rectified and affected functional
units were disconnected or removed. This must be verified
by an insulation test with 1.5 times the value of the rated
operating voltage for the duration of one minute.
Level 3
Personal safety with
limitation to the
main busbar
compartment on a
panel or doublefront unit and the
device or cable
connection
compartment.
Level 4
Personal safety
with limitation of
the arcing fault
effects to the place
of origin.
80
SIVACON S8 Planning Principles – Conforming to standards and design-verified
9.3 Seismic safety and seismic
requirements
The SIVACON S8 switchboard is available in earthquake-proof design for seismic requirements. The tests
examine its operability and stability during and after an
earthquake. As illustrated in Tab. 9/4, the results of the
earthquake tests are specified for three categories.
Acceleration values
There is a simple interrelation between storey acceleration
af and local ground acceleration ag:
af = K
Test specifications
•IEC 60068-3-3, German version from 1993:
Environmental testing; Seismic test methods for
equipments – Guidance
•IEC 60068-2-6, German version from 2008:
Environmental testing; Tests – Test Fc: Vibrations,
sinusoidal
•IEC 60068-2-57, German version from 2000:
Environmental testing; Tests – Test Ff: Vibrations – Timehistory and sine-beat method
•KTA 2201.4, 2000: Design of Nuclear Power Plants
against Seismic Events
•IEC 60980, 1989: Recommended practices for seismic
qualification of electrical equipment of the safety system
for nuclear generating stations
•UBC, Uniform Building Code, 1997: Chapter 16,
Division IV
Testing is performed in three axes with independently
generated time histories in three axes in accordance with
IEC 60068-2-57.
1
x ag
with amplification factor K according to Tab. 9/5. Ground
acceleration depends on the local seismic conditions.
2
If the switchboard is installed at ground level and directly
on the ground-level foundation, this acceleration factor –
provided that there are no further specifications – can be
regarded as the acceleration which acts on the mounting
plane of the switchboard (K = 1, af = ag).
3
Depending on how the switchboard is fastened, an amplification of the ground acceleration becomes effective. This
dependency is taken into account with the amplification
factor K (Tab. 9/5).
4
If there is no information about the storey acceleration or
the installation of the switchboard, K = 2 is applied, meaning double the value of the specified ground acceleration is
regarded as the stress the switchboard will be exposed to.
5
If there are no specifications regarding the directional
assignment of the acceleration parameters, the values are
referred to the horizontal directions (x, y). Conforming to
international standards, the vertical accelerations are lower
and are usually factored in with 0.5 to 0.6 times the horizontal acceleration.
6
7
Tab. 9/4: SIVACON S8 system characteristics under earthquake
conditions
Tab. 9/5: Acceleration factor K for SIVACON S8
K factor
Fastening of the switchboard
1.0
af = 0.75 g (ZPA)
On rigid foundations or supporting structure of
high stiffness
1.5
Rigidly connected with the building
af = 1.06 g (ZPA)
2.0
On stiff supporting structure which is rigidly
connected with the building
3.0
On supporting structure of low stiffness,
connected to the building
Category 1: Operability during the earthquake
af = 0.6 g (ZPA)
Category 2: Operability after the earthquake
Category 3: Stability
af = floor acceleration (acceleration in the mounting plane of the switchboard)
ZPA = zero period acceleration
g = ground acceleration = 9.81 m/s2
8
9
10
11
SIVACON S8 Planning Principles – Conforming to standards and design-verified
81
Comparison of seismic requirements
There are numerous international and national standards
referring to the classification of seismic requirements.
Classification varies greatly in these documents. For this
reason, the specification of an earthquake zone always
requires reference to the relevant standard or classification.
With regard to the requirements placed on SIVACON S8
switchboards, it is therefore advantageous to specify the
floor acceleration. Or, if this information is not available,
the ground acceleration in the vicinity of the building
accommodating the installation should be given. Fig. 9/3
shows the relation of the seismic categories 1, 2 and 3 from
Tab. 9/4 to the known earthquake classifications and seismic scale divisions
Ground acceleration ag in m/s2
14
X
Kat 1 / K = 2
Kat 2 / K = 2
Kat 3 / K = 2
Kat 1 / K = 1
Kat 2 / K = 1
Kat 3 / K = 1
12
VI
5
10
8
X
8
IX
6
4
AG5
7
AG4
4
3
2
2
1
0
IEC 60721-2-6
Legend:
IEC 60721-2-6
IEC 60068-3-3
UBC
JMA
SIA
Richter
Mod. Mercalli
MSK
VIII
4
AG3
3
AG2
2b
2a
1
AG1
IEC 60068-3-3
IX
UBC
V
IV
III
I,II
JMA
6
Z3b
Z3a
5
Z2
4
Z1 1...3
SIA V 160
Richter
VIII
Mod. Mercalli
MSK
Zone classification acc. to the "Map of natural hazards by Munich Reinsurance"
Class of ground acceleration "AG" in g acc. to Table 3 of this standard
Zone classification acc. to the Uniform Building Code (International Conference of Building Officials
Japan Meterological Agency; 1951
Swiss association of engineers and architects
Richter scale
Modified Mercalli scale; 1956
Medvedev-Sponheur-Karnik scale; 1964
Fig. 9/3: Comparison of seismic scales for the classification of seismic response categories of SIVACON S8
82
VII
VI
V
I...IV
VII
VI
I...V
SIVACON S8 Planning Principles – Conforming to standards and design-verified
9.4 Declarations of conformity and
certificates
With a Declaration of Conformity, the manufacturer of the
low-voltage switchboard confirms that the requirements of
the directive or standard referred to in this declaration have
been fulfilled.
As part of these declarations, the site of manufacture (or
several sites if applicable) is normally mentioned. Declarations of conformity are only valid for the manufacturer and
site(s) of manufacture mentioned therein. The preparation
of a declaration of conformity is performed under the sole
responsibility of the manufacturer (switchboard manufacturer) at the said site of manufacture or factory.
Further information about such declarations of conformity
and certificates (Fig. 9/4, and Fig. 9/5 to Fig. 9/7 are examples of such documents) can be obtained from your
Siemens contact.
CE marking
The CE marking is a label affixed under the sole responsibility of the manufacturer. The Declaration of Conformity
confirms compliance of products with the relevant basic
requirements of all EU Directives of the European Union
(European Community, EC) applicable to this product.
1
Low-voltage switchboards – named power switchgear and
controlgear assemblies in the product standard
IEC 61439-2 – must comply with the requirements of the
Low Voltage Directive 2006/95/EC and the
EMC Directive 2004/108/EC. The CE marking is a mandatory
condition for placing products on the markets of the entire
European Union.
2
3
4
5
6
7
8
9
10
11
SIVACON S8 Planning Principles – Conforming to standards and design-verified
83
Fig. 9/4: EC-Declaration of Conformity for SIVACON S8 in respect of the Low Voltage and EMC Directives
84
SIVACON S8 Planning Principles – Conforming to standards and design-verified
1
2
3
4
5
6
7
8
9
10
11
Fig. 9/5: Declaration of Conformity for SIVACON S8 regarding design verification
SIVACON S8 Planning Principles – Conforming to standards and design-verified
85
Fig. 9/6: Declaration of Conformity for SIVACON S8 regarding design verification - Annex Page 1/2
86
SIVACON S8 Planning Principles – Conforming to standards and design-verified
1
2
3
4
5
6
7
8
9
10
11
Fig. 9/7: Declaration of Conformity for SIVACON S8 regarding design verification - Annex Page 2/2
SIVACON S8 Planning Principles – Conforming to standards and design-verified
87
88
SIVACON S8 Planning Principles – Conforming to standards and design-verified
Chapter 10
Technical annex
10.1 Power supply systems according
to their type of connection to earth 90
10.2 Loads and dimensioning
93
10.3 Degrees of protection according to
IEC 6052995
10.4 Forms of internal separation based on
IEC 61439-296
10.5 Operating currents of three-phase
asynchronous motors97
10.6 Three-phase distribution transformers98
10 Technical annex
10.1 Power supply systems according
to their type of connection to earth
The power supply systems according the type of connection to earth considered for power distribution are described in IEC 60364-1. The type of connection to earth
must be selected carefully for the low-voltage network, as
it has a major impact on the expense required for protective
measures (Fig. 10/1). On the low-voltage side, it also
influences the system's electromagnetic compatibility
(EMC). From experience the TN-S system has the best
cost-benefit ratio of electric networks at the low-voltage
level. To determine the type of connection to earth, the
entire installation from the power source (transformer) to
the electrical consumer must be considered. The low-voltage switchboard is merely one part of this installation.
TN system: In the TN system, one operating line is directly earthed; the exposed conductive parts in the electrical installation are connected
to this earthed point via protective conductors. Dependent on the arrangement of the protective (PE) and neutral (N) conductors,
three types are distinguished:
a) TN-S system:
In the entire system, neutral (N)
and protective (PE) conductors
are laid separately.
Power
source
b) TN-C system:
In the entire system, the functions
of the neutral and protective conductor
are combined in one conductor (PEN).
Power
source
Electrical installation
L1
L2
L3
N
PE
c) TN-C-S system:
In a part of the system, the functions
of the neutral and protective conductor
are combined in one conductor (PEN).
Power
source
Electrical installation
L1
L2
L3
PEN
L1
L2
L3
PEN
3
1
3
1
TT system: In the TT system, one operating line is directly
earthed; the exposed conductive parts in the
electrical installation are connected to earthing
electrodes which are electrically independent of the
earthing electrode of the system.
Power
source
Electrical installation
Electrical installation
1
PE
N
3
1
1
1
IT system: In the IT system, all active operating lines are
separated from earth or one point is connected
to earth via an impedance.
Power
source
Electrical installation
L1
L2
L3
N
L1
L2
L3
N
2
RB
3
4
First letter = earthing condition of the supplying
power source
T = direct earthing of one point (live conductor)
I = no point (live conductor) or one point of the power
source is connected to earth via an impedance
Second letter = earthing condition of the exposed
conductive parts in the electrical installation
T = exposed conductive parts are connected to earth
separately, in groups or jointly
N = exposed conductive parts are directly connected to the
earthed point of the electrical installation (usually
N conductor close to the power source) via protective
conductors
RA
RB
RA
1
3
1
Further letters = arrangement of the neutral conductor and
protective conductor
S = neutral conductor function and protective conductor function
are laid in separate conductors.
C = neutral conductor function and protective conductor function
are laid in one conductor (PEN).
1 Exposed conductive part
2 High-resistance impedance
3 Operational or system earthing RB
4 Earthing of exposed conductive parts RA
(separately, in groups or jointly)
Fig. 10/1: Systems according to the type of connection to earth in accordance with IEC 60364-1
90
SIVACON S8 Planning Principles – Technical annex
4
In the event of a short-circuit to an exposed conductive part
in a TN system, a considerable proportion of the single-pole
short-circuit current is not fed back to the power source
through a connection to earth but through the protective
conductor. The comparatively high single-pole short-circuit
current allows for the use of simple protective devices such
as fuses or miniature circuit-breakers, which clear the fault
within the permissible fault disconnect time.
In building installations, networks with TN-S systems are
preferably used today. When a TN-S system is used in the
entire building, residual currents in the building, and thus
an electromagnetic interference by galvanic coupling, can
be prevented during normal operation because the operating currents flow back exclusively through the separately
laid insulated N conductor. In case of a central arrangement
of the power sources, the TN-S system can always be
recommended. In that, the system earthing is implemented
at one central earthing point (CEP) for all sources, for
example in the main low-voltage distribution system.
Please note that neither the PEN nor the PE must be
switched. If a PEN conductor is used, it is to be insulated
over its entire course – this includes the distribution system
(please refer to the example in Fig. 10/2). The magnitude of
the single-pole short-circuit current directly depends on the
position of the CEP.
1
2
Caution: In extensive supply networks with more than one
splitter bridge, stray short-circuit currents may occur.
4-pole switches must be used if two TN-S subsystems are
connected to each other. In TN-S systems, only one earthing bridge may be active at a time. Therefore, it is not
permitted that two earthing bridges be interconnected via
two conductors.
3
Today, networks with TT systems are still used in rural
supply areas only and in few countries. In this context, the
stipulated independence of the earthing systems must be
4
5
Subdistribution board
Low-voltage main distribution board
Power source
6
7
Neutral choke
(no longer required
for modern systems)
U
L1
L2
L3
L1
L2
L3
PEN
PE
L1
L2
L3
8
L1
L2
L3
PEN
PE
Central
Earthing
Point
9
Main
Equipotential
Bonding conductor
L1
L2
L3
N
PE
L1
L2
L3
N
PE
10
11
Fig. 10/2: Line diagram for an earthing concept based on a central earthing point (CEP)
SIVACON S8 Planning Principles – Technical annex
91
observed. In accordance with IEC 60364-5-54, a minimum
clearance ≥ 15 m is required.
Networks with an IT system are preferably used for rooms
with medical applications in accordance with IEC 60364-7710 in hospitals and in production, where no supply interruption is to take place upon the first fault, for example in
the cable and optical waveguide production. The TT system
as well as the IT system require the use of residual current
devices (RCDs) – previously named FI (fault interrupters)
– for almost every circuit.
Fault in the IT network
In the IT network, it is the phase-earth-phase fault – or
double fault – which has to be managed by the circuit-breaker as the worst case fault at the load and supply
side (Fig. 10/3). During such a fault, the full phase-to-phase
voltage of 690 V, for example, is applied to the main contact, and simultaneously the high short-circuit current.
The product standard IEC 60947-2 for circuit-breakers calls
for additional tests in accordance with Annex H of this
standard to qualify them for use in non-earthed or impedance-earthed networks (IT systems). Accordingly, circuit-breaker specifications relating to the IT system must be
observed.
3-phase 690 V AC
690 V
Fig. 10/3: Double fault in the IT system
92
SIVACON S8 Planning Principles – Technical annex
10.2 Loads and dimensioning
Current carrying capacity considering the ambient
temperature
Short-circuit current carrying capacity of distribution
busbars and functional units
The current carrying capacity can be calculated from the
following relation taking the ambient temperature into
account.
IEC 61439-1, section 8.6.1 permits a reduction of the
short-circuit strength of the vertical distribution busbar and
its outgoing feeders in relation to the the main busbars "if
these connections are arranged in such a way that a short
circuit between phase and earthed parts needn't be expected under proper service conditions." The background
for this simplification is the usually higher rated current of
the main busbar compared to the currents of the distribution busbars, for the contact systems of the withdrawable
units and in the feeder lines to the functional units. Lower
temperature rises can be expected for these lower branching currents, so that it hardly makes sense to aim at the
same dynamic and thermal short-circuit strength as for the
main busbar.
I12 / I22 = DT1 / DT2
Where the power ratio (of the currents squared) equals the
ratio of temperature differences DT between object and
ambience.
Example of a main busbar:
With a
rated current I1 = 4,000 A and a
permissible busbar temperature TSS = 130 °C,
there is a rated current I2 for an ambient temperature
Tenv = 40 °C
I2 = I 1 x
∆T1
∆T2
= I1 x
(TSS - Tenv)
(TSS - 35 °C)
90 °C
95 °C
= 3,893 A
I2 = 4,000 A x
1
2
3
Example:
4
To attain a required rated short-circuit strength of 100 kA, a
3VL5 MCCB with a switching capacity of 100 A is used as a
short-circuit protective device:
In case of a disconnection on short circuit, merely a peak
current of approximately 50 kA will flow as a let-through
current for a short time, so that a root mean square value
(RMS) of 35 kA can be assumed as maximum. It is only this
reduced current which stresses the conductors in this
circuit for the very short disconnect time of the breaker.
5
6
Rated frequency 60 Hz
According to IEC 61439-1, section 10.10.2.3.1, the rated
current at 60 Hz must be reduced to 95% of its value at
50 Hz in case of currents greater than 800 A.
Test of dielectric properties
According to IEC 61439-1, section 10.9 the dielectric
properties of the switchboard must be tested in consideration of devices having reduced dielectric properties. This
means: "For this test, all the electrical equipment of the
assembly shall be connected, except those items of apparatus which, according to the relevant specifications, are
designed for a lower test voltage; current-consuming
apparatus (e.g. windings, measuring instruments, voltage
surge suppression devices) in which the application of the
test voltage would cause the flow of a current, shall be
disconnected. ... Such apparatus shall be disconnected at
one of their terminals unless they are not designed to
withstand the full test voltage, in which case all terminals
may be disconnected."
7
8
9
10
11
SIVACON S8 Planning Principles – Technical annex
93
Dimensioning of protective conductors
According to IEC 61439-1, section 8.4 and 8.8, an earth
continuity connection (PE, PEN) must be ensured, which
must meet the following requirements in accordance with
IEC 61439-1.
•According to subsection 8.4.3.2.2:
"All exposed conductive parts of the assembly shall be
interconnected together and to the protective conductor
of the supply or via an earthing conductor to the earthing
arrangement. These interconnections may be achieved
either by metal screwed connections, welding or other
conductive connections or by a separate protective
conductor." Tab. 10/1 must be used for a separate protective conductor.
Furthermore, certain exposed conductive parts of the
assembly which do not constitute a danger need not be
connected to the protective conductor.
This applies
– "either because they cannot be touched on large
surfaces or grasped with the hand
– or because they are of small size (approximately 50 mm
by 50 mm) or so located as to exclude any contact with
live parts."
"This applies to screws, rivets and nameplates. It also
applies to electromagnets of contactors or relays,
magnetic cores of transformers, certain parts of releases,
or similar, irrespective of their size. When removable parts
are equipped with a metal supporting surface, these
surfaces shall be considered sufficient for ensuring earth
continuity of protective circuits provided that the pressure
exerted on them is sufficiently high."
•According to subsection 8.4.3.2.3:
"A protective conductor within the assembly shall be so
designed that it is capable of withstanding the highest
thermal and dynamic stresses arising from faults in
external circuits at the place of installation that are
supplied through the assembly. Conductive structural
parts may be used as a protective conductor or a part of
it." The following is required for PEN conductors in
addition:
- Minimum cross section ≥ 10 mm2 (Cu) or 16 mm2 (Al)
- PEN cross section > N cross section
- "Structural parts shall not be used as PEN conductors.
However, mounting rails made of copper or aluminium
may be used as PEN conductors."
- If the PEN current can reach high values (e.g. in electrical installations with many fluorescent lamps), it may
be required that the PEN conductor has the same or a
higher current carrying capacity as / than the phase
conductor. This capacity value must be agreed separately
between the assembly manufacturer and the user.
•According to section 8.8 (for terminals of protective
conductors led into the assembly from the outside):
In the absence of a special agreement between the
assembly manufacturer and the user, terminals for protective conductors shall be rated to accommodate copper
conductors of a cross-sectional area based on the cross
section of the corresponding phase conductor
(see Tab. 10/2).
Tab. 10/1: Cross-sectional areas of protective conductors made of
copper according to subsection 8.4.3.2.2 of IEC 61439-1
Tab. 10/2: Minimum requirements for connecting protective
copper conductors (PE and PEN) according to section 8.8 (from the
outside) of IEC 61439-1
Rated operating current Ie
S1)
Ie ≤ 20
20 < Ie ≤ 25
2.5 mm2
25 < Ie ≤ 32
4 mm2
32 < Ie ≤ 63
6 mm2
63 < Ie 10 mm2
1)
94
Minimum cross section of
protective conductor
S = cross section of phase conductor in mm2
SIVACON S8 Planning Principles – Technical annex
Permissible cross-sectional
range of phase conductors S
S ≤ 16 mm2
16 mm2 < S ≤ 35 mm2
Minimum cross section of
corresponding protective
conductor (PE, PEN) SP 1)
S
16 mm2
35 mm2 < S ≤ 400 mm2
½xS
400 mm2 < S ≤ 800 mm2
200 mm2
800 mm2 < S
1)
¼xS
The neutral current can be influenced by load harmonics to a significant
extent.
10.3 Degrees of protection according
to IEC 60529
IEC 60529 establishes a classification system for degrees of
protection ensured by an enclosure which relates to electrical equipment of a voltage rating up to 72.5 kV. The IP code
(IP = international protection) described in this standard
characterises the degrees of protection against access to
hazardous parts, ingress of solid foreign bodies and the
ingress of water which are ensured by an enclosure. It is
briefly summarized in Tab. 10/3.
1
2
Tab. 10/3: Structure of the IP code and the meaning of code numerals and code letters
Code constituent
International protection
1st
Meaning for the protection of
equipment
Meaning for the safety of
persons
-
-
Against the ingress of solid bodies
Against access to dangerous parts
0
-
(not protected)
-
(not protected)
1
≥ 50.0 mm in diameter
back of the hand
2
≥ 12.5 mm in diameter
finger
3
≥ 2.5 mm in diameter
tool
4
≥ 1.0 mm in diameter
wire
5
dust-protected
wire
6
dust-proof
wire
Against the ingress of water with a
damaging effect
-
Code letter or code number
IP
code number:
2nd code number:
0
-
(not protected)
1
vertical drops
2
drops to an angle of 15°(enclosure
tilt 15°)
3
spray water
4
splash water
5
jet water
6
powerful jet water
7
temporary immersion
8
continuous immersion
Additional letter (optional)
4
5
6
7
8
Against access to dangerous parts
with a
A
back of the hand
B
finger
C
tool
D
9
wire
Supplementary information
especially for
Additional letter (optional)
3
H
high-voltage devices
M
movement during water test
S
standstill during water test
W
weather conditions
-
10
11
SIVACON S8 Planning Principles – Technical annex
95
10.4 Forms of internal separation
based on IEC 61439-2
IEC 61439-2 describes possibilities how to subdivide power
switchgear and controlgear assemblies. The following shall
be attained by a subdivision into separate functional units,
separate compartments or by enclosing conductive parts:
•Protection against contact with hazardous parts
(minimum IPXXB, where XX represents any code numbers
1 and 2 of the IP code)
•Protection against ingress of solid foreign bodies
(minimum IP2X, where X represents any 2nd code
number)
Note: IP2X also covers IPXXB.
Internal separation can be ensured by partitions, or protective covers (barriers, made of metal or non-metal materials), insulation of exposed conductive parts or the integrated enclosure of devices, as implemented in the moulded-plastic circuit-breaker, for example. The forms of internal
separation mentioned in IEC 61439-2 – form 1, 2a, 2b, 3a,
3b, 4a and 4b – are listed in Tab. 10/4.
Tab. 10/4: Internal separation of switchgear and controlgear assemblies in accordance with IEC 61439-2
Form
1
2
3
4
Explanations
Form
No internal separation
Block diagram
1
No internal separation
2a
No separation between terminals
and busbars
2b
Separation between terminals and
busbars
3a
No separation between terminals
and busbars
3b
Separation between terminals and
busbars
4a
Terminals in the same separation
that is used for the connected
functional unit
4b
Terminals not in the same
separation that is used for the
connected functional unit
Separation between busbars and functional units
Separation between busbars and all functional units
+
Mutual separation of all functional units
+
Separation between the terminals of conductors led to
the units from the outside and these functional units,
not however between the terminals of these functional
units
Separation between busbars and all functional units
+
Mutual separation of all functional units
+
Separation between the terminals of conductors led to
the units from the outside which are assigned to a
functional unit and those terminals of all the other
functional units and busbars
Enclosure
Legend:
Explanations
Internal
separation
Busbar
Functional unit
Terminal for conductors
led to the unit
from outside
96
SIVACON S8 Planning Principles – Technical annex
10.5 Operating currents of threephase asynchronous motors
To enable the conversion of motor power values, Tab. 10/5
specifies guide values for the motor current present with
different voltages.
1
Tab. 10/5: Guide values for the operating currents of three-phase
asynchronous motors (AC-2/AC-3) in accordance with IEC 60947-4-1
Motor current I (guide value)
Standard power P
at 400 V
at 500 V
2
at 690 V
0.06 kW
0.20 A
0.16 A
0.12 A
0.09 kW
0.30 A
0.24 A
0.17 A
0.12 kW
0.44 A
0.32 A
0.23 A
0.18 kW
0.60 A
0.48 A
0.35 A
0.25 kW
0.85 A
0.68 A
0.49 A
0.37 kW
1.1 A
0.88 A
0.64 A
0.55 kW
1.5 A
1.2 A
0.87 A
0.75 kW
1.9 A
1.5 A
1.1 A
1.1 kW
2.7 A
2.2 A
1.6 A
1.5 kW
3.6 A
2.9 A
2.1 A
2.2 kW
4.9 A
3.9 A
2.8 A
3 kW
6.5 A
5.2 A
3.8 A
4 kW
8.5 A
6.8 A
4.9 A
5.5 kW
11.5 A
9.2 A
6.7 A
7.5 kW
15.5 A
12.4 A
8.9 A
11 kW
22 A
17.6 A
12.8 A
15 kW
29 A
23 A
17 A
18.5 kW
35 A
28 A
21 A
22 kW
41 A
33 A
24 A
30 kW
55 A
44 A
32 A
37 kW
66 A
53 A
39 A
45 kW
80 A
64 A
47 A
55 kW
97 A
78 A
57 A
75 kW
132 A
106 A
77 A
90 kW
160 A
128 A
93 A
110 kW
195 A
156 A
113 A
132 kW
230 A
184 A
134 A
160 kW
280 A
224 A
162 A
200 kW
350 A
280 A
203 A
250 kW
430 A
344 A
250 A
3
4
5
6
7
8
9
10
11
SIVACON S8 Planning Principles – Technical annex
97
10.6 Three-phase distribution
transformers
Important parameters for the connection of the SIVACON
S8 low-voltage switchboard to three-phase distribution
transformers are listed in Tab. 10/6.
Approximation formulas for current estimation, if there are
no specified table values:
For the rated transformer current by approximation:
Ir = k x SrT
For the initial symmetrical transformer short-circuit current
by approximation:
Ik“ = Ir / ukr
Exemplified by
•Rated transformer power SrT = 500 kVA
•Voltage factor k
k = 1.45 A/kVA for a rated voltage of 400 V
k = 1.1 A/kVA for a rated voltage of 525 V
k = 0.84 A/kVA for a rated voltage of 690 V
•Rated short-circuit voltage ukr =4%
there are the following approximations for Ur = 400 V:
Ir = (1.45 x 400) A = 725 A
Ik“ = (725 x 100 / 4) A = 18.125 kA
Tab. 10/6: Rated currents and initial symmetrical short-circuit currents of three-phase distribution transformers
Rated voltage
400 V AC / 50 Hz
Rated power
SrT
Rated
current Ir
525 V AC / 50 Hz
690 V AC / 50 Hz
Rated value of the shortcircuit voltage ukr
Rated value of the shortcircuit voltage ukr
Rated value of the shortcircuit voltage ukr
4%
4%
4%
6%
Initial short-circuit
alternating current Ik“ 1)
Rated
current Ir
6%
Initial short-circuit
alternating current Ik“ 1)
Rated
current Ir
6%
Initial short-circuit
alternating current Ik“ 1)
50 kVA
72 A
1,933 A
1,306 A
55 A
1,473 A
995 A
42 A
1,116 A
754 A
100 kVA
144 A
3,871 A
2,612 A
110 A
2,950 A
1,990 A
84 A
2,235 A
1,508 A
160 kVA
230 A
6,209 A
4,192 A
176 A
4,731 A
3,194 A
133 A
3,585 A
2,420 A
200 kVA
288 A
7,749 A
5,239 A
220 A
5,904 A
3,992 A
167 A
4,474 A
3,025 A
250 kVA
360 A
9,716 A
6,552 A
275 A
7,402 A
4,992 A
209 A
5,609 A
3,783 A
315 kVA
455 A
12,247 A
8,259 A
346 A
9,331 A
6,292 A
262 A
7,071 A
4,768 A
400 kVA
578 A
15,506 A
10,492 A
440 A
11,814 A
7,994 A
335 A
8,953 A
6,058 A
500 kVA
722 A
19,438 A
13,078 A
550 A
14,810 A
9,964 A
418 A
11,223 A
7,581 A
630 kVA
910 A
24,503 A
16,193 A
693 A
18,669 A
12,338 A
525 A
14,147 A
9,349 A
800 kVA
108 A
-
20,992 A
880 A
-
15,994 A
670 A
-
12,120 A
1,000 kVA
1,154 A
-
26,224 A
1,100 A
-
19,980 A
836 A
-
15,140 A
1,250 kVA
1,805 A
-
32,791 A
1,375 A
-
24,984 A
1,046 A
-
18,932 A
1,600 kVA
2,310 A
-
41,857 A
1,760 A
-
31,891 A
1,330 A
-
24,265 A
2,000 kVA
2,887 A
-
52,511 A
2,200 A
-
40,008 A
1,674 A
-
30,317 A
2,500 kVA
3,608 A
-
65,547 A
2,749 A
-
49,941 A
2,090 A
-
37,844 A
3,150 kVA
4,450 A
-
82,656 A
3,470 A
-
62,976 A
2,640 A
-
47,722 A
1)
Ik“ Uninfluenced initial symmetrical transformer short-circuit current in consideration of the voltage and correction factor of the transformer impedance in
accordance with IEC 60909-0, without considering the system source impedance
98
SIVACON S8 Planning Principles – Technical annex
Chapter 11
Glossary and rated parameters
11.1 Terms and definitions
11.2 Rated parameters
11.3 Index of tables
11.4 Index of figures
100
102
104
106
11 Glossary and rated parameters
11.1 Terms and definitions
The information provided in the two standards IEC 61439-1
and -2 is used to explain the relevant terms referred to in
this planning manual:
Low-voltage switchgear and controlgear assembly
(assembly)
Combination of one or more low-voltage switching devices
together with associated control, measuring, signalling,
protective, regulating equipment, with all the internal
electrical and mechanical interconnections and structural
parts
Assembly system
Full range of mechanical and electrical components
(enclosures, busbars, functional units, etc.), as defined by
the original manufacturer, which can be assembled in
accordance with the original manufacturer’s instructions in
order to produce various assemblies
Power switchgear and controlgear assembly
(PSC assembly)
Low-voltage switchgear and controlgear assembly which is
used to distribute and control electric energy for all types of
loads, in industrial commercial and similar applications not
intended to be operated by ordinary persons
Design verification
Verification performed on a sample of an assembly or parts
of assemblies to show that the type meets the
requirements of the relevant assembly standard
(Note: The design verification may comprise one or more
equivalent and alternative methods such as tests, calculations, physical measurements or the application of construction rules)
Verification test
Test performed on a sample of an assembly or parts of
assemblies to verify that the type meets the requirements
of the relevant assembly standard (Note: "Verification tests"
correspond to "type tests" as described in the no longer
valid IEC 60439-1 standard)
Verification assessment
Design verification of strict construction rules or calculations applied to a sample of an assembly or parts of
assemblies to show that the type meets the requirements
of the relevant assembly standard
Routine verification
Verification of each assembly performed during and/or
after manufacture to confirm whether it complies with the
requirements of the relevant assembly standard
Functional unit
Part of an assembly comprising all the electrical and
mechanical elements including switching devices that
contribute to the fulfilment of the same function
Removable part
Part which may be removed in whole from the assembly for
replacement, even if the connected circuit is energised
Withdrawable unit
Removable part, which can be brought from a connected
position to a disconnected position, or, if applicable, to a
test position, while it remains mechanically connected to
the power switchgear and controlgear assembly
Connected position
Position of a removable part (or withdrawable unit) when it
is fully connected for the intended function
Test position
Position of a withdrawable unit in which the relevant main
circuits are open on the incoming side, while the
requirements placed upon an isolating gap need not be
met, and in which the auxiliary circuits are connected in a
manner that assures that the withdrawable unit undergoes
a function test while it remains mechanically connected to
the switchgear and controlgear assembly
(Note: The opening may also be established by operating a
suitable device without the withdrawable unit being
mechanically moved)
Disconnected position
Position of a withdrawable unit in which the isolating gaps
in the main and auxiliary circuits are open while it remains
mechanically connected to the assembly (Note: The
isolating gap may also be established by operating a
suitable device without the withdrawable unit being
mechanically moved)
Isolating gap
Clearance in air between open contacts which meets the
safety requirements defined for the disconnector
Construction rule
Defined rules for the construction of an assembly which
may be applied as an alternative to a verification test
100
SIVACON S8 Planning Principles – Glossary and rated parameters
1
Removed position
Position of a removable part or withdrawable unit which
has been removed from the switchgear and controlgear
assembly and is mechanically and electrically disconnected
from the assembly
2
Supporting structure (frame)
Part which is an integral part of a switchgear and controlgear assembly and which is intended to hold various
components of such an assembly and an enclosure
3
Enclosure
Housing providing the type and degree of protection
suitable for the intended application
4
Cubicle
Constructional unit of an assembly between two successive
vertical delineations
Sub-section
Constructional unit of an assembly between two successive
horizontal or vertical delineations within a cubicle
5
Compartment
Cubicle or sub-section enclosed except for openings
necessary for interconnection, control or ventilation
6
Coding device
Device which prevents a removable part to be placed in a
position not intended for this removable part
7
Transport unit
Part of an assembly or a complete assembly suitable for
transportation without being dismantled
8
Operating gangway within a PSC assembly
Space the operator must enter to be able to operate and
monitor the power switchgear and controlgear assembly
properly
9
Maintenance gangway within a PSC assembly
Space which is only accessible for authorized persons and
which is mainly intended for the maintenance of built-in
equipment
10
11
SIVACON S8 Planning Principles – Glossary and rated parameters
101
11.2 Rated parameters
The manufacturers of low-voltage switchgear and controlgear assemblies specify rated values in accordance with
IEC 61439-1 and -2. For the low-voltage switching devices
applied, rated values must be stated which are in accordance with the relevant product-specific standards from the
IEC 60947 series. These rated values apply to defined
operating conditions and characterise the usability of a
switchgear and controlgear assembly.
The following ratings in accordance with IEC 61439-1 and
-2 shall be the basis for assembly configurations:
Rated voltage Un
The highest nominal value of alternating (root mean square
value) or direct voltage specified by the assembly manufacturer for which the main circuits of the switchgear and
controlgear assembly are designed.
Rated operational voltage Ue
(of a circuit in an assembly)
Value of voltage, declared by the assembly manufacturer,
which combined with the rated current determines its
application.
Rated insulation voltage Ui
Root mean square withstand voltage value, assigned by the
assembly manufacturer to the equipment or to a part of it,
characterising the specified (long-term) withstand capability of its insulation.
Rated impulse withstand voltage Uimp
Impulse withstand voltage value, declared by the assembly
manufacturer, characterising the specified withstand
capability of the insulation against transient overvoltages.
Rated current In
Value of current declared by the assembly manufacturer
which considers the equipment ratings and their
arrangement and use. It can be carried without the temperature rise of various parts of the assembly exceeding
specified limits under specified conditions.
Rated peak withstand current Ipk
Value of peak short-circuit current, declared by the
assembly manufacturer, that can be withstood under
specified conditions.
Rated short-time withstand current Icw
The root mean square value of short-time current, declared
by the assembly manufacturer, that can be withstood under
specified conditions, defined in terms of a current and
time.
102
For time values up to 3 s, the Joule integral (I² x t) remains
constant. For example, from Icw = 50 kA, 1 s,
Icw = 28.9 kA can be calculated for 3 s:
Icw(t2) = Icw(t1) x
t1
t2
Icw(3 s) = 50 kA x
1s
= 28.9 kA
3s
Factor n = Ipk / Icw
To determine the surge current, the root mean square.
value of the short-circuit current must be multiplied with
factor n. Tab. 11/1 lists values for n from IEC 61439-1.
Tab. 11/1: Factor n as a function of cos j and Icw
n
cos j
Rated short-time withstand current Icw
1.5
0.7
Icw ≤ 5 kA
1.7
0.7
5 kA < Icw ≤ 10 kA
2
0.3
10 kA < Icw ≤ 20 kA
2.1
0.25
20 kA < Icw ≤ 50 kA
2.2
0.2
5 kA < Icw Rated conditional short-circuit current Icc
Value of prospective short-circuit current, declared by the
assembly manufacturer, that can be withstood for the total
operating time (clearing time, duration of current flow) of
the short-circuit protective device (SCPD) under specified
conditions.
Rated current of the assembly InA
The rated current of the assembly is the smaller of:
• the sum of the rated currents of the incoming circuits
within the assembly operated in parallel;
• the total current which the main busbar is capable of
distributing in the particular assembly configuration.
Rated current of a circuit Inc
The rated current of a circuit which is specified by the
assembly manufacturer depends on the rated values of the
individual items of electrical equipment in the circuit within
the assembly, their arrangement and their type of application. The circuit must be capable of carrying this current
when operated alone without that overtemperatures in
individual components will exceed the limit values
specified.
SIVACON S8 Planning Principles – Glossary and rated parameters
Rated diversity factor (RDF)
The rated diversity factor is the rated current value given as
a percentage by the assembly manufacturer, the outgoing
feeders of an assembly can continuously and simultaneously be loaded with taking the mutual thermal
influences into account.
The rated diversity factor may be specified
• for groups of circuits
• for the entire switchgear and controlgear assembly
The rated current of the circuits Inc multiplied by the rated
diversity factor must be greater than or equal to the assumed outgoing feeder load.
The rated diversity factor recognizes that several outgoing
feeders in a cubicle are in practice loaded intermittently, or
not fully loaded simultaneously. However, if there is no
agreement between manufacturer and user as to the real
loading of the outgoing feeder circuits, the values given in
Tab. 11/2 shall be applied.
Tab. 11/2: Rated diversity factors RDF for various load types
Type of loading
Assumed diversity
factor
Power distribution: 2 - 3 circuits
0.9
Power distribution: 4 - 5 circuits
0.8
Power distribution: 6 - 9 circuits
0.7
Power distribution: 10 circuits and more
0.6
Electric actuators
0.2
Motors ≤ 100 kW
0.8
Motors > 100 kW
1
If equipment is to be coordinated which is used in a switchboard, the rated values given in the IEC 60947 product
standards shall be the basis:
Trip class – CLASS
Trip classes define time intervals within which the protective devices (overload trip units of circuit breakers or
overload relays) must trip in cold state when assuming a
symmetrical 3-phase load of 7.2 times the setting current:
• CLASS 5, CLASS 10:
for standard applications (normal starting)
• CLASS 20, CLASS 30, CLASS 40:
for applications with a high starting current over a longer
period of time
1
2
3
In addition to the overload protective devices, the contactors and the short-circuit fuses must also be dimensioned for longer starting times.
Short-circuit breaking capacity
The short-circuit breaking capacity is the short-circuit
current declared by the manufacturer which is capable of
switching off the device / motor starter under specified
conditions.
4
5
Type of co-ordination
The type of co-ordination describes the permissible degree
of damage after a short circuit. Under no circumstances
must persons or the installation be endangered in the
event of a short circuit.
Specifically: Type of co-ordination 2 or “Type 2”
The starter remains operable. No damage must be
present on devices with the exception of slight
contactor contact welding, if these contacts can be
easily separated without any substantial deformation.
6
7
8
9
10
11
SIVACON S8 Planning Principles – Glossary and rated parameters
103
11.3 Index of tables
Tab.
Title
Page
Chapter 2
Title
Page
Chapter 4
2/1
Technical data, standards and approvals for the
SIVACON S8 switchboard
8
2/2
Schematic overview of switchboard
configurations for SIVACON S8
10
2/3
Cubicle types and busbar arrangement
12
2/4
Cubicle dimensions
14
2/5
Surface treatment
14
2/6
Rating of the main busbar
15
2/7
Basic data of the different mounting designs
16
2/8
Cubicle widths for earthing short-circuit points
18
2/9
Cable terminal for the main earthing busbar
18
Chapter 3
4/1
General cubicle characteristics for the universal
mounting design
32
4/2
Ratings of the vertical distribution busbar
34
4/3
Cubicle characteristics for the fixed-mounted
design
35
4/4
Connection cross sections in fixed-mounted
cubicles with a front door
35
4/5
Ratings for cable feeders
35
4/6
Cubicle characteristics for in-line switchdisconnectors
36
4/7
General cubicle characteristics for the
withdrawable design
36
4/8
Characteristics of withdrawable units in SFD
37
4/9
Connection data for the main circuit
38
4/10
Connection data for the auxiliary circuit
38
38
General cubicle characteristics in circuit-breaker
design
21
3/2
Cubicles for direct supply and direct feeder
22
3/3
Cubicle dimensions for rear busbar position
23
4/11
3/4
Cubicle dimensions for rear busbar position with
two busbar systems in the cubicle
Number of available auxiliary contacts for
withdrawable units in SFD
24
4/12
Withdrawable units in HFD
39
3/5
Cubicle dimensions for rear busbar position
25
4/13
Characteristics of the withdrawable units in HFD
40
3/6
Rated currents for cubicles with one 3WL
26
4/14
42
3/7
Dimensions for cubicles with 3 ACB of type 3WL
27
Cable connection for direct supply and direct
feeder
3/8
Cubicles with one ACB (3WL)
27
4/15
Connection data for the auxiliary circuit
42
Rated currents for special load cases of a circuitbreaker cubicle with three 3WL11 circuit-breakers
in the cubicle
4/16
42
3/9
27
Number of available auxiliary contacts for
withdrawable units in HFD
4/17
43
Widths for incoming/outgoing feeder cubicles
with MCCB
Rated currents and minimum withdrawable unit
heights for cable feeders in SFD / HFD
28
28
Minimum withdrawable unit sizes for:
fused motor feeders, 400 V, CLASS 10,
with overload relay, type 2 at 50 kA
44
3/11
Cable connection for cubicles with MCCB of type
3VL
4/18
3/12
Rated currents for cubicles with 3VL
28
4/19
45
3/13
Cubicle width for direct supply and direct feeder
29
Minimum withdrawable unit sizes for:
fused motor feeders, 400 V, CLASS 10,
with SIMOCODE, type 2 at 50 kA
3/14
Cable connection for direct supply and direct
feeder
29
3/15
Rated currents for direct supply and direct feeder
29
4/20
Minimum withdrawable unit sizes for:
fuseless motor feeders, 400 V, CLASS 10,
overload protection with circuit-breaker, type 2
at 50 kA
45
4/21
Minimum withdrawable unit sizes for:
fuseless motor feeders, 400 V, CLASS 10,
with overload relay, type 2 at 50 kA
46
4/22
Minimum withdrawable unit sizes for:
fuseless motor feeders, 400 V, CLASS 10,
with SIMOCODE, type 2 at 50 kA
46
3/1
3/10
104
Tab.
SIVACON S8 Planning Principles – Glossary and rated parameters
Tab.
Title
Page
Tab.
Title
Page
Chapter 7
Chapter 5
5/1
General cubicle characteristics for in-line design,
pluggable
48
7/1
General characteristics of cubicles for reactive
power compensation
64
5/2
Rating data of the vertical distribution busbar
3NJ62
49
7/2
Choked capacitor modules with built-in audio
frequency suppressor
65
5/3
Additional built-in elements for 3NJ62
49
7/3
Configuration of capacitor modules
66
5/4
Derating factors for 3NJ62 fuse links
49
7/4
Conversion factors F for phase angle adjustments
67
5/5
Rating data of the 3NJ62 cable feeders
49
68
5/6
Conversion factors for different ambient
temperatures
7/5
50
Connecting cables and back-up fuses for
separately installed compensation cubicles
5/7
Configuration rules for 3NJ62: arrangement of
the in-line units in the cubicle
50
5/8
Rating data of the vertical distribution busbar
SASIL plus
51
5/9
Additional built-in elements for SASIL plus
51
5/10
Derating factors for SASIL plus fuse links
51
5/11
Rating data of the SASIL plus cable feeders
51
5/12
Conversion factors for different ambient
temperatures
52
Configuration rules for SASIL plus: arrangement
of the in-line units in the cubicle
52
5/13
Chapter 6
6/1
General cubicle characteristics for fixed-mounted
in-line design
55
1
2
Chapter 8
8/1
Weights (guide values) for a selection of cubicles
74
8/2
Power losses of SIVACON S8 cubicles (guide
values)
74
8/3
Normal service conditions for SIVACON S8
switchboards
75
8/4
Special service conditions for SIVACON S8
switchboards
76
3
4
Chapter 9
9/1
Test for the design verification in accordance with
IEC 61439-2
78
9/2
SIVACON S8 system characteristics under arcing
conditions
80
9/3
SIVACON S8 arc levels (system areas to which the
internal arc is limited are marked in orange)
80
81
81
6/2
Rating data of the 3NJ4 cable feeders
55
9/4
6/3
Dimensions if additional built-in elements are
used
SIVACON S8 system characteristics under
earthquake conditions
56
9/5
Acceleration factor K for SIVACON S8
6/4
Mounting location of additional built-in elements
56
Chapter 10
6/5
Device compartment for in-line units in the 2nd
row
56
10/1
94
6/6
Rating data of the cable feeders for in-line units
in the 2nd row
Cross-sectional areas of protective conductors
made of copper according to subsection
8.4.3.2.2 of IEC 61439-1
56
57
Minimum requirements for connecting protective
copper conductors (PE and PEN) according to
section 8.8 (from the outside) of IEC 61439-1
94
6/7
General cubicle characteristics for fixed-mounted
cubicles with front door
10/2
6/8
Rating data of the vertical distribution busbar
57
10/3
95
6/9
Conductor cross sections in fixed-mounted
cubicles with a front door
Structure of the IP code and the meaning of code
numerals and code letters
58
10/4
96
6/10
Rating data of the cable feeders
59
Internal separation of switchgear and controlgear
assemblies in accordance with IEC 61439-2
6/11
Configuration data of the mounting kits for
modular installation devices
60
10/5
Guide values for the operating currents of threephase asynchronous motors (AC-2/AC-3) in
accordance with IEC 60947-4-1
97
6/12
General characteristics for cubicles for
customized solutions
61
10/6
98
6/13
Configuration data for cubicles for customized
solutions
62
Rated currents and initial symmetrical shortcircuit currents of three-phase distribution
transformers
6/14
Rating data of the vertical distribution busbar
62
11/1
102
Configuration data on mounting options for
cubicles for customized solutions
Factor n as a function of cos j and Icw
6/15
62
11/2
Rated diversity factors RDF for various load types
103
5
6
7
8
Chapter 11
9
10
11
SIVACON S8 Planning Principles – Glossary and rated parameters
105
11.4 Index of figures
Fig.
Title
Page
Chapter 1
Title
Page
Chapter 6
1.1
Totally Integrated Power (TIP) as holistic
approach to electric power distribution
4
6/1
Cubicles for fixed-mounted in-line design with
3NJ4 in-line switch-disconnectors
54
1.2
SIVACON S8 for all areas of application
5
6/2
Cubicles for fixed mounting with front door
57
1.3
Use of SIVACON S8 in power distribution
6
6/3
Installation of switching devices in fixedmounted cubicles with a front cover (cover
opened)
58
6/4
Cable connections in fixed-mounted cubicles
with a front door
58
6/5
Mounting kit for modular installation devices
(without cover)
60
Cubicles for customized solutions
61
Chapter 2
2/1
Cubicle design of SIVACON S8
9
2/2
Dimensions of enclosure parts
14
2/3
Variable busbar position for SIVACON S8
15
Chapter 3
3/1
Cubicles in circuit-breaker design
20
6/6
3/2
Forced cooling in a circuit-breaker cubicle
21
Chapter 7
3/3
Cubicle types for direct supply and direct feeder
(refer to the text for explanations)
29
7/1
Cubicle for reactive power compensation
64
7/2
Capacitor modules for reactive power
compensation
65
Chapter 4
Cubicles for universal mounting design: on the
left with front cable connection; on the right for
rear cable connection
32
4/2
Cubicle with forced cooling for universal
mounting design
33
4/3
Combination options for universal mounting
design
34
4/4
Equipment in fixed-mounted design (left) and
connection terminals in the cable connection
compartment (right)
4/1
35
Chapter 8
8/1
Clearances to obstacles
70
8/2
Maintenance gangway widths and passage
heights
70
8/3
Minimum widths of maintenance gangways in
accordance with IEC 60364-7-729
71
8/4
Cubicle arrangement for single-front (top) and
double-front systems (bottom)
72
8/5
Permissible deviations of the installation area
73
8/6
Installation on raised floors
73
8/7
Foundation frame mounted on concrete
73
8/8
Mounting points of the single-front system
73
Design variants of the withdrawable units in
standard feature design (SFD; left) and high
feature design (HFD; right)
36
4/6
Positions in the SFD contact system
37
8/9
Mounting points of the double-front system
73
4/7
Standard withdrawable unit in SFD with a
withdrawable unit height of 100 mm
37
8/10
Mounting points of the corner cubicle
73
4/8
Open withdrawable unit compartments in SFD
38
4/9
Structure of a small withdrawable unit in HFD
39
9/1
Insulated main busbar in the SIVACON S8
(optional N insulation)
79
4/10
Positions in the HFD contact system
39
9/2
Arc barrier in SIVACON S8
79
4/11
Front areas usable for an instrument panel on
small withdrawable units with an installation
height of 150 mm
41
9/3
Comparison of seismic scales for the
classification of seismic response categories of
SIVACON S8
82
4/12
Front areas usable for an instrument panel on
small withdrawable units with an installation
height of 200 mm
41
9/4
EC-Declaration of Conformity for SIVACON S8 in
respect of the Low Voltage and EMC Directives
84
4/13
Front areas usable for an instrument panel on
standard withdrawable units
41
9/5
Declaration of Conformity for SIVACON S8
regarding design verification
85
4/14
Compartment for standard withdrawable unit in
HFD
42
9/6
Declaration of Conformity for SIVACON S8
regarding design verification - Annex Page 1/2
86
4/15
Adapter plate for small withdrawable units
42
9/7
Declaration of Conformity for SIVACON S8
regarding design verification - Annex Page 2/2
87
4/5
Chapter 5
Chapter 9
Chapter 10
Cubicles for in-line design, pluggable: on the left
for in-line switch-disconnectors 3NJ62 with
fuses, on the right for switch-disconnectors SASIL
plus with fuses
48
5/2
Pluggable in-line switch-disconnectors 3NJ62
49
5/3
Pluggable in-line switch-disconnectors SASIL plus
51
5/1
106
Fig.
10/1
Systems according to the type of connection to
earth in accordance with IEC 60364-1
90
10/2
Line diagram for an earthing concept based on a
central earthing point (CEP)
91
10/3
Double fault in the IT system
92
SIVACON S8 Planning Principles – Glossary and rated parameters
Siemens AG
Energy Management
Medium Voltage & Systems
Mozartstr. 31c
D-91052 Erlangen
Germany
All rights reserved.
All data and circuit examples without engagement.
Subject to change without prior notice.
www.siemens.com/sivacon
Order no.: IC1000-G320-A220-V2-7600
© 2014 Siemens AG
The information in this manual only includes general
descriptions and/or performance characteristics, which do
not always apply in the form described in a specific application, or which may change as products are developed.
The required performance characteristics are only binding,
if they are expressly agreed at the point of conclusion of
the contract.
All product names may be trademarks or product names of
Siemens AG or supplier companies; use by third parties for
their own purposes could violate the rights of the owner.