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Modular Terminals Technology
Contents
Modular Terminals Technology
Overview of modular terminals
4
Product range
6
Overview of connection systems
16
Standards, directives, terminology
18
Installation instructions
20
Requirements
24
Tests
28
Electrical tests
30
Mechanical tests
32
Additional tests
35
Plug gauge test
39
ATEX
40
Worldwide activities
44
3
Overview of modular terminals
Weidmüller – your partner with innovative connections
Increasing functionality, more compact designs, and increasing complexity of equipment
and installations, place higher demands on the selection of the correct connection technology. Simple installation, reliability and easy maintenance of systems and equipment depend on choosing the right type of connection.
Weidmüller is a competent partner in providing professional connectivity solutions tailored
to your requirements and can provide full support for all connection technology issues.
This catalogue brings together many of the fundamental concepts and selection criteria
that must be considered when choosing a type of connection.
And if you need to find out more, simply contact us for individual personal advice.
W-Series
Screw connection with clamping yoke
page 6
Z-Series
Tension clamp connection
4
page 8
Overview of modular terminals
I-Series
IDC Technology
page 10
P-Series
Push In Technology
page 12
SAK-Series
Screw connection with
clamping yoke
page 14
5
Product range
W-Series / Screw connection with clamping yoke
When you need functional perfection right down to the smallest
detail, the screw connection modular terminals of the W-Series
have long since been setting the standard. The combination of
many benefits has still not been beaten and enables the
W-Series to maintain a clear lead in the market.
The W-Series provides solutions for conductor cross-sections
from 0.05 to 300 mm2, and for all customary electrical functions.
Plus a choice of plug-in (ZQV) or screw-in (WQV) cross-connections within one modular terminal. This leads to considerable
time-savings when compared with other screw clamp terminals
on the market.
Thanks to the patented design of the Weidmüller screw connection (clamping yoke), it is easy to connect two conductors with
the same cross-section at one clamping point and there are
also the possibilities to connect multiple wires.
Design
W Standard
Common profiles for sizes from
2.5 to 10 mm2
Conductor cross-sections from
0.05 to 300 mm2
Large clamping range
W Compact
Small sizes
Recognisable by the “N” in
the terminal designation
Conductor cross-sections
from 0.13 to 120 mm2
Product overview
Rated cross-section
1.5 mm2
2.5 mm2
4 mm2
6 mm2
Standard
Compact
Standard
Compact
Standard
Compact
Standard
2 connections
•
•
•
•
•
•
•
3 and 4 connections
•
•
•
•
•
•
PE terminals
2 connections
•
•
•
•
•
•
3 and 4 connections
•
•
•
•
•
Compact
10 mm2
Standard
Compact
16 mm2
35 mm2
Standard
Compact
Standard Compact
•
•
•
•
•
•
•
•
Feed-through terminals
Fuse terminals
Disconnect terminals
•
•
•
•
•
•
•
•
Disconnect test terminals
3-conductor installation terminals
•
•
•
Plug-in terminals
•
•
•
Initiator/Actuator terminals
•
•
•
Terminals with electronic components
•
•
•
Miniature terminals for TS 15
•
Rated cross-section
50 mm2
Standard
70 mm2
•
•
•
•
•
•
N-conductor disconnect terminals
•
•
•
•
•
95 mm2
120 mm2
150 mm2
Compact
Standard
Compact
Standard
Compact
Standard
Compact
Standard
Feed-through terminals
•
•
•
•
•
•
•
•
PE terminals
•
•
•
•
•
•
•
•
N-conductor disconnect terminals
6
•
•
Compact
240 mm2
Standard
•
Compact
•
Product range
The connection 1
Plug-in cross-connections also
possible
Separation of electrical and mechanical
functions.
The clamping unit (clamping yoke
plus clamping screw) is made from
hardened steel for excellent high
contact force.
A copper current bar for a low through
resistance. The tin-plated surface
guarantees minimum contact resistance.
2
Screw-in or plug-in cross-connections
as required.
For screw terminals, the pluggable
cross-connection (ZQV) is unique, with
considerable time savings.
Cross-connections with up to 10 poles
available as standard for 2.5 and 4.
20-pole cross-connections (ZQV)
available for custom fabrication.
Easy to use
3
Can be clipped to or removed from the
terminal rail in either direction.
The screw is always held firmly in place
even when fully unscrewed and even
when mounted upside-down: specially
important for mechanical screwdrivers.
Recessed clamping screw position
provides guide for screwdriver.
All metal parts fitted captive within the
terminal.
Numerous marking options.
3
Wemid insulating material
3
2
1
4
Common profiles
5
3
Reliable contact
4
The properties of the clamping yoke
compensates for temperatureinduced changes to the conductor
(no gradual loosening).
No maintenance required (no need to
retighten the clamping screw).
Vibration-resistant connection – many
products of the W-Series are approved
for railway applications to EN 61373.
The highest contact force of any
connection system.
Non-tracking, CTI 600
Thermally stable up to 120 °C
V0 flammability rating to UL 94
Free from cadmium, halogens and
phosphor flame-retardant substances
Safe to use
5
Shock protection with connected conductors – even with cross-connection.
Terminals supplied with open clamping
point. In addition, the yoke tab prevents
incorrect insertion of conductors.
Indentations on clamping yoke and
current bar mesh in such a way
ensures that even the smallest conductor can be securely connected, whilst
large conductors, and even two or
multiple conductors, are held centrally.
Identical size from 2.5 to 10 mm2
Minimum number of different
accessories
Easy planning
Standards and directives
The reliable contact and dependability of
the Weidmüller systems are verified by:
Type tests to IEC 60947-7-1/-2/-3.
National and international approvals
A huge portfolio of UL and CSA
approvals
W-Series certified for railway
applications
ATEX approval
*
T
7
Product range
Z-Series / Tension clamp connection
Modular terminals with tension clamp connections, the
Z-Series, were specially designed to meet customers’ requirements:
Compact size, generous marking surfaces, integral test point,
cross-connection options within the Z-Series and to other
Weidmüller modular terminals.
The Z-Series terminals have a wide clamping range and can
accommodate one or two cross-connection channels.
The plug-in standard cross-connections enable potentials to be
distributed over any number of terminals.
Design
Z Roof
Conductor cross-sections
from 0.13 to 16 mm2
Length reduced by up to 36 %
Conductor and screwdriver inserted at
an angle
Z Standard
Conductor cross-sections
from 0.08 to 35 mm2
Top-entry conductor insertion parallel
with screwdriver operation
Product overview
Rated cross-section
1.5 mm2
Standard Roof
2.5 mm2
Standard Roof
4 mm2
6 mm2
Standard Roof
Standard Roof
10 mm2
Standard Roof
16 mm2
Standard Roof
Feed-through terminals
2 connections
•
•
•
•
•
•
•
•
•
3 connections
•
•
•
•
•
•
•
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•
4 connections
•
•
•
•
•
2 x 2 connections
•
•
PE terminals
2 connections
•
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•
3 connections
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•
4 connections
•
•
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•
Fuse terminals
•
•
Disconnect test terminals
•
•
2-tier terminals
•
3-conductor/distributor terminals
•
Miniature block terminals
•
Initiator/Actuator terminals
•
Terminals with electronic components
•
8
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•
•
•
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•
Plug-in terminals
•
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•
•
•
•
•
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•
Power supply terminals
N-conductor terminals
35 mm2
Standard Roof
•
•
•
•
Product range
2
The connection 1
Plug-in cross-connections
In accordance with the Weidmüller
contact principle, the electrical and
mechanical functions are also kept
separate in the Tension clamp connection
system.
Tension clamp made from high-quality
stainless steel for optimum contact
force
Copper current bar for minimum
through resistance
2- to 10-pole, or “endless” for custom
fabrication
Full rated current
Break-out poles for excluding
intermediate potentials
Easy to use
3
Practical connection thanks to parallel
insertion of conductor and screwdriver
TOP cable entry
No special tools required
Integral test point
The Wemid insulating material
3
1
2
2
Non-tracking, CTI 600
Thermally stable up to 120 °C
V0 flammability rating to UL 94
Free from Cadmium, Halogens and
phosphor
flame-retardant substances
Clarity means reliability
4
Easy to use thanks to generous
clamping space to IEC 60947-1
Suitable for connecting conductors
from 0.08 to 35 mm2
For clamping one conductor per
clamping point to IEC 60999
Reliable contact
4
Maintenance-free connection for
reliable contact throughout the lifetime
of the terminal
Gas-tight contact zone
Surface of current bar treated to
prevent oxidation
Absolutely 100 % vibration-resistant
High contact force
Comprehensive accessories
Standards and directives
Test adapter, test plug
Can be used with
standard and group
markers
End cover plates,
partition plates
Covers
Reducing sleeves
The reliable contact and dependability of
the Weidmüller systems are verified by:
Type tests to IEC 60947-7-1/-2/-3
Supplementary Weidmüller test regimes
National and international approvals
ATEX approval
T
9
Product range
I-Series / IDC Technology
IDC stands for Insulation Displacement Connection. Innovative,
more effective, offering greater cost-savings and maximum
contact reliability. This method of connection, already tried and
tested in telecommunications and electronics, is now available
for industrial applications incorporated into modular terminals.
The IDC technology results in minimum work during installation
time but still guarantees reliable contact – and all without stripping, without screwing, without special tools.
All standardised PVC-insulated conductors with cross-sections
between 0.21 and 1.5 mm2 (0.5 and 2.5 mm2) are suitable for
this type of connection.
Users who wish to connect special conductors should consult
Weidmüller first. For all up-to-date information about this type of
connection simply visit the website www.idc2.de.
If it is not possible to connect a certain type of conductor, the
Weidmüller hybrid terminals could represent the best solution.
These terminals have an IDC on one side and either a screw or
tension clamp connection on the other.
Product overview
1.5 mm2
2.5 mm2
2 connections
•
•
3 connections
•
•
4 connections
•
•
2 connections
•
•
3 connections
•
•
4 connections
•
•
Fuse terminals
•
•
Disconnect terminals
•
•
2-tier terminals
•
Rated cross-section
Feed-through terminals
PE terminals
Initiator/Actuator terminals
•
Plug-in terminals
•
Hybrid terminals (IDC/screw)
2 connections
•
•
3 connections
•
•
2 connections
•
•
3 connections
•
Terminals with electronic components
•
Hybrid terminals (IDC/clamp)
10
•
Product range
2
Maximum ease of use
The connection 1
Plug-in cross-connections
Separating the electrical and mechanical
functions or galvanic isolation results in
major advantages for this type of
connection, too.
Extremely high contact reliability thanks
to the extra clamp (sprung steel)
Copper current bar for low through
resistance
A wide clamping range for different
cross-sections: 0.21...1.5 mm and
0.50...2.5 mm
2- to 10-pole, or “endless” for custom
fabrication
Full rated current
Break-out poles for excluding
intermediate potentials
Electric shock protection (finger-proof)
to German standard VBG 4
3
Insert the screwdriver as far as possible
into the clamping point, press sideways,
and the connection is complete!
A visible, reliable
connection.
2
2
The Wemid insulating material
1
4
2
Non-tracking, CTI 600
Thermally stable up to 120 °C
V0 flammability rating to UL 94
Free from Cadmium, Halogens and
phosphor flame-retardant substances
3
Major time- and cost-savings
Time-savings of up to 76 % compared
with conventional types of connection
Reliable contact
4
Reliable contact thanks to the
inspection “window”
Comprehensive accessories
Standards and directives
Test adapter, test plug
Can be used with standard and group
marker
End cover plates,
partition plates
Covers
Reducing sleeves
Fuse holder
IDC2 terminals comply with standards
such as:
Modular terminal standards
IEC 60947-7-1/-2/-3
IDC standard IEC 60352-4
More stringent Weidmüller tests
National and international approvals,
Germanic Lloyd, Lloyds Register,
DNV, RINA, KEMA, KEUR
ATEX approval
T
11
Product range
P-Series / Push In Technology
The new range of 3-conductor installation terminals with the
Push In system complements our extensive range of modular
terminals. Ideally suited for power distribution in building installations, this “roofstyle” terminal design offers fast wiring times and
easy maintenance due to it´s impressive marking options.
All the features of a 4 mm terminal in the space of a 2.5 mm
model. The Push In system terminals accomodate conductor
cross-sections from 0.5 to 4 mm and is conceived as a TOP
system, i.e. parallel conductor insertion and clamp actuation to
release conductor (from above).
2
2
2
Direct connections = Direct savings
The Push In connection system is a real winner thanks to minimum wiring times plus ease of use. Compared to 3-conductor
tension clamp terminals, time-savings of up to 50 % (3.5 s per
conductor) are possible when connecting the conductors.
The stripped solid conductor is simply pushed fully into the
clamping point, and the connection is finished. No tools are required and the result is a reliable, vibration-resistant and gastight connection. Even fine-strand conductors with crimped wire
end ferrules or ultrasonic-welded conductors can be connected
without any problems.
Product overview
The new 3-conductor installation terminals with Push In connections are ideal for combining with the new single-tier installation
terminals with tension clamp connections. The busbar position
is identical on both types. Consequently, users have a highperformance portfolio – primarily for building installations – at
their disposal!
Views with side wall of
housing removed
1
1.5 mm2 / 2.5 mm2 / 4 mm2
Rated cross-section
3-conductor Push In installation terminals with 10 x 3 busbar
NT / L / PE
L/L
N / L / PE
L / L / PE
N/L
L
3
6 mm2 / 10 mm2
•
•
•
•
•
•
3-conductor Push In installation terminals with ZQV cross-connection
NT / L / PE
L/L
N / L / PE
•
•
•
•
L / L / PE
Z-Series installation terminals
Rated cross-section
2
2.5 mm2
4 mm2
6 mm2
10 mm2
16 mm2
Feed-through terminal
•
•
•
•
•
PE terminal
•
•
•
•
•
N-conductor terminal
•
•
•
•
•
Push In-Series installation terminals
Rated cross-section
Feed-through terminal
PE terminal
N-conductor terminal
35 mm2
•
1.5 mm2 / 2.5 mm2 / 4 mm2
6 mm2 / 10 mm2
16 mm2
o
o
o
o
o
o
o
o
o
o = planned for 2005
12
Product range
2
The connection 1
Plug-in cross-connections
The pressure spring clamp for connecting
the conductor is mounted separately in
the housing to guarantee separation of
mechanical and electrical functions in the
Push In system, too.
Rated current 32 A
Direct connection of solid and finestrand conductors with wire end
ferrules
Rapid, straightforward potential
distribution with the ZQV plug-in
cross-connection.
Standard ZQV cross-connection
“Endless” cross-connection for custom
fabrication
Easy to use
3
The simple Push In system for solid and
fine-strand conductors with wire end
ferrules shortens the wiring time
considerably.
No additional tools required
Easy to use in confined installations
TOP connection (conductor inserted
and connection secured from above)
The Wemid insulating material
2
3
1
Easy wiring in the most confined
spaces
The 3-conductor installation terminals
with their Push In connections enable the
wiring of AC and three-phase circuits in
very confined situations. In particular,
when the width available is limited, a large
number of cables and wires can still be
installed with ease.
4
Reliable contact
Non-tracking, CTI 600
Thermally stable up to 120 °C
V0 flammability rating to UL 94
Free from Cadmium, halogen and
phosphor flame-retardant substances
4
A stainless steel clamp ensures
permanent, secure contact between
conductor and current bar; higher
pull-out forces required compared to
tension-clamp terminals.
The copper/tin alloy current bar
makes a perfect connection with
the conductor; this guarantees a very
low through resistance.
Safe use
Standards and directives
The “Push In” contact is designed to prevent incorrect use in many cases.
Spring path limited by pressure
spring stopper (protects the pressure
spring). This precisely defines the screwdriver position in combination with
the plastic enclosure.
The conductor stopper positions the
end of the conductor within the
connection chamber. It supports the
pressure spring for large bending radii
outside the terminal and secures the
contact to the busbar.
The reliable contact and dependability of
the Weidmüller systems are verified by:
Type tests to IEC 60947-7-1/-2.
Supplementary test regimes
Strict QA tests for product quality
(accredited to DIN ISO 9002)
13
Product range
SAK-Series / Screw connection with clamping yoke
Put to the test billions of times
Countless approvals, specifications and the world’s most
extensive range of terminals allow it to be used in a wide
range of different applications.
The right materials for every application
Ambient temperatures are not an issue for the SAK-series
thanks to different materials such as polyamide, thermoplastic
and temperature resistant ceramic.
Best conductivity and high contact ability
Thanks to its construction, the legendary high tensile steel
screw clamp absorbs geometric changes to the connected
conductor.
*
All materials are proofed by the current environmental
policy and RoHS compliant.
Design
Cross-sections from 0.5
to 95 mm2
Special foot for TS 35
Special foot for TS 32
Cross-sections from 0.5
to 35 mm2
TS 32/TS 35 “2 in 1”
combination foot
Product overview
Terminal type
Feed-through terminals
PA 6.6 / TS 32
KRG / TS 32
PA 6.6 / TS 35
KRG / TS 35
PA 6.6 / combination foot
PA 6.6 / TS 15
2-tier terminals
PE terminals
PA 6.6 / TS 32
PA 6.6 / TS 35
PA 6.6 / TS 15
Fuse terminals
PA 6.6 / TS 32
PA 6.6 / TS 35
KrG / TS 32
KrG / TS 35
PA 6.6 / TS 15
PA 6.6 / combination foot
2-tier fuse terminals
PA 6.6 / TS 32
PA 6.6 / TS 35
PA 6.6 / combination foot
Disconnect terminals
TS 35
PA 6.6 / TS 15
2-tier disconnect test terminals
Ceramic terminals
14
Rated cross-section
2.5 mm2
4 mm2
•
•
•
•
•
•
•
•
•
•
•
•
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•
•
•
•
•
•
6 mm2
10 mm2
•
•
•
•
•
•
•
•
•
•
16 mm2
•
•
•
•
•
35 mm2
•
•
•
•
•
Flat-blade
connection
•
Faston
connection
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
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•
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•
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•
•
•
•
•
•
Solder
connection
•
•
•
•
•
•
Clamp
Loaded
•
Product range
The connection 1
Cross-connections
Separation of electrical and mechanical
functions:
The clamping unit (clamping yoke
plus clamping screw) is made from
hardened steel for excellent strength.
A copper current bar for a low voltage
drop. The tin-plated surface guarantees
minimum contact through resistance.
Gas tight contact point.
High cross-section indipendent
clamping point. Large conductor
clamping range.
User defined number of poles (to extend) by stringing the pre-assembled
cross-connection together any number
of poles can be confected.
3
2
3
2
Reliable contact
4
The elastic properties of the clamping
yoke compensates for temperatureinduced changes to the conductor
(no gradual loosening).
Vibration-resistant connection – no
need to retighten the clamping screw.
The highest contact force of any
connection system on minimum space.
5
Safe to use
3
Integrated idle point when loosering the
terminal screws – especially important
when using mechanical screwdrivers
Screw driver guiding by countersunk
arranged countersinking of clamping
screws
All parts fitted captive within the
terminal.
Numerous labelling options.
Insulating materials and
max. temperatures
1
4
Easy to use
PA – 100 °C
KrG – 130 °C
EP – 160 °C
Ceramic – 250 °C
6
3 differing rail mounting feet styles 6
5
Standards and directives
Terminals supplied with open clamping
point.
The yoke tab prevents
incorrect insertion of conductors.
The reliable contact and dependability of
the Weidmüller systems are verified by:
Type tests to IEC 60947-7-1/-2
National and international approvals
A huge portfolio of UL and CSA
approvals
ATEX approval
T
15
Overview of connection systems
The connection systems – it’s your choice
Clamping Yoke
Leaf Clamp Connection
IDC Technology
The Weidmüller Clamping Yoke System
is an optimum combination of the specific
properties of steel and copper. This clamping yoke system has proved its worth in
billions of Weidmüller products over the
years. Both the clamping yoke and the
clamping screw are made from hardened
steel. This clamping yoke arrangement
generates the necessary contact force.
The clamping yoke presses the incoming
conductor against a current bar made of
copper or high-quality brass. The hardened Weidmüller clamping yoke ensures a
gas-tight, vibration-resistant connection
between conductor and current bar.
Weidmüller’s patented Leaf Clamp
Connection System is a screw connection system for large conductor crosssections. The insertion of large conductors into the clamping point is made
easier here by the fact that the clamping
unit can be removed first. The conductor
can then be placed directly on the current
bar before re-inserting the clamping unit
and tightening the screw to grip the
conductor.
The IDC Technology is a type of
connection for copper conductors that
does not require the conductor to be prepared in any way – so no stripping and no
crimping.
When connecting the conductor, the
insulation of the conductor is penetrated
and an electrically conductive contact
between conductor and current bar
produced at the same time.
The Weidmüller IDC principle, like
Weidmüller’s other types of connection,
again keeps mechanical and electrical
functions separate.
A clamp made from corrosion resistant
stainless steel presses the current bar
onto the conductor and therefore guarantees a low contact resistance and a gastight, vibration-resistant connection.
TOP Connection
Tension Clamp Connection
The Weidmüller TOP Connection System ensures that the conductor can be
inserted and the clamping screw
tightened from the same direction.
Such an arrangement eases the wiring
work in certain installations, e.g. when
there is little space at the sides in terminal
boxes. The TOP connection system
combines the specific properties of
steel and copper. The hardened steel
lever presses the conductor directly
against a current bar made of copper
or high-quality brass. The high contact
force guarantees a gas-tight connection
between conductor and current bar.
The Weidmüller Tension Clamp System functions similarly to the tried-andtested clamping yoke. Here again, the
mechanical and electrical functions are
kept
separate. The tension clamp made from
high-quality rust resistant and acid-proof
steel pulls the conductor against the tinplated copper current bar. Treating the
copper in this way ensures low contact
resistance and high corrosion resistance.
The compensating effect of the tension
clamp ensures a secure contact for the
lifetime of the terminal.
16
Overview of connection systems
The principle of vibration resistance
Push In Technology
In the Push In Technology the stripped
solid conductor is simply inserted into the
clamping point as far as it will go. And
that completes the connection! No tools
are required and the result is a reliable,
vibration-resistant and gas-tight connection. Even fine-strand conductors with
crimped wire end ferrules or ultrasonicwelded conductors can be connected
without any problems. A stainless steel
compression clamp, which is fitted in a
separate housing, guarantees a high
contact force between the conductor
and the current bar (tin-plated copper).
The pull-out force for this system is even
higher than that for the tension clamp
system. Clamp and conductor stops in a
steel housing ensure optimum connection conditions and a guide for the screwdriver needed to detach the conductor.
Clamping Yoke
As the clamping screw is tightened, the
ensuing force causes the upper threaded part to clamp back and exert a locknut effect on the screw.
The Weidmüller clamping yoke system
is vibration-resistant. The relaxation of
the conductor is compensated for by
the elastic behaviour of the Weidmüller
clamping yoke.
It is therefore not necessary to retighten
the clamping screw.
Leaf Clamp
The distance “d” between the shaft of
the clamping screw and the leaf clamp
causes elastic deformation of the clamp
as the screw is tightened. The vibration
resistance depends on the magnitude
of the clamp force of the leaf clamp,
and this force also compensates for
relaxation phenomena in the conductor.
It is therefore not necessary to retighten
the clamping screw.
TOP
Like with the clamping yoke, the force
exerted by the steel lever as the screw
is tightened forces apart the two
threaded parts of the TOP connection.
This exerts a locking effect on the
screw and guarantees excellent
vibration resistance.
17
Standards, directives, terminology
International standards
Modular terminals to IEC 60947-7-1
Applications
VDE 0611-1
Modular terminal /
Modular feed-through terminal
The contents of this standard correspond
to the international standard.
(EN 60947-7-1)
(IEC 60947-7-1)
This standard specifies requirements for
modular terminals with clamping points
with or without screws which are primarily
intended for industrial or similar applications and are mounted on a supporting
rail that creates the electrical and
mechanical connections between copper
conductors. The standard is valid for
modular terminals for connecting round
copper conductors with a cross-section
between 0.2 und 300 mm2 (AWG 24/600
kcmil), for electric circuits up to 1000
V AC/1000 Hz or up to 1500 V DC.
An insulating component that supports
one or more clamping arrangements
insulated from one another and which is
designed to be fixed to a supporting rail.
Note:
The rated cross-section is selected from
the following standard cross-sections:
0.2 - 0.5 - 0.75 - 1.0 - 1.5 - 2.5 - 4.0 6.0 - 10 - 16 - 25 - 35 - 50 - 70 - 95 120 - 150 - 240 - 300 mm2.
IEC 60947-7-1
Low-voltage switchgear and controlgear;
Part 7: Ancillary equipment; Section one –
terminal blocks for copper conductors.
CENELEC has ratified this standard at
European level. Therefore, the standard
is valid in the following countries:
Austria, Belgium, Denmark, Finland,
France, Germany, Greece, Iceland,
Ireland, Italy, Luxembourg, Netherlands,
Norway, Portugal, Spain, Sweden,
Switzerland, United Kingdom.
In conjunction with this and having an
overriding importance:
IEC 60947-1
Low-voltage switchgear and controlgear;
Part 1: General Rules, EN 60947-1
VDE 0660 Teil 100
Low-voltage switchgear; Part 1: General
provisions
18
This standard also serves as a guide for
certain types of modular terminal, e.g.
disconnect terminals, which are not
covered by their own standards.
Rated cross-section
The rated cross-section of a modular
terminal is the size – as specified by the
manufacturer – of the conductor crosssection that can be connected to the
terminal, on which certain thermal,
mechanical and electrical requirements
are based, and which is intrinsic to the
marking on the terminal.
The modular terminals possess a rated
connection capacity that is at least two
steps smaller than the rated crosssection. The conductors may be solid,
multi-strand or fine-strand components,
Standards, directives, terminology
if necessary with the ends of the
conductors prepared for the connection.
Verification of the rated cross-section is
carried out with the plug gauges to
VDE 0660 part 100.
Rated current
IEC 60947-7-1
Test currents to VDE 0611-1 are assigned
to the rated cross-sections. There should
be no unacceptable temperature rise in
the terminal at these rated currents:
mm2
A
1.5
17.5
2.5
24
4.0
32
6.0
41
mm2
A
10
57
16
76
25
101
35
125
Pollution severity
IEC 60947-7-1
Relative humidity 50 % at +40 °C, 90 %
at +20 °C
The pollution severity specifies the
influence of solid, liquid or gaseous
foreign matter that could reduce the
electric strength of the specific surface
resistance.
CE marking
Pollution severity 3 has been specified for
modular terminals for industrial applications: the occurrence of conductive
contamination or dry, non-conductive
contamination which becomes conductive because condensation is expected.
The minimum clearance is defined in IEC
60947-7-1 in conjunction with the rated
impulse withstand voltage.
Operating conditions
mm2
A
50
150
70
192
95
232
120
269
mm2
A
150
309
185
353
240
415
300
520
Rated voltage
IEC 60947-7-1
The modular terminals can be used in the
following standard conditions:
Ambient temperature -5 °C...+40 °C,
average value over 24 h: +35 °C
Attitudes up to 2000 m above sea level
The CE marking is carried out by the
manufacturer according to the EU
directive. Such marking confirms
compliance with the directive and is
intended for the regulatory authorities.
It guarantees the unhindered movement
of goods throughout Europe.
Conductor connectors ≥ 50 V~/75 Vcomply with the fundamental safety
requirements specified in the Low-voltage
Directive 73/23/EWG (amended by
93/68/EWG).
The CE marking according to the CE
Marking Directive 93/68/EWG has been
compulsory since 1 Jan 1997.
The marking must be visible on the packaging. Declarations of conformity are
available for inspection by the national
regulatory authorities responsible –
within the scope of the technical
documentation.
The rated voltage of a modular terminal is
the rated insulation voltage on which the
insulation tests and creepage distances
are based. They are determined according to DIN VDE 0110-1. The rated voltage
is intrinsic to the marking on the terminal.
Rated impulse withstand voltage
IEC 60947-7-1
This is the value of a surge voltage to
which the modular terminals can be
subjected and on which the clearances to
VDE 0660 part 100 or DIN VDE 0110-1
are based.
19
Installation instructions
The installation of terminal strips
Assembly and end brackets
Separation plate
Assemble terminal strips from left to
right.
Closed side on the left,
open on the right.
Always close off the open side of a
modular terminal with an end cover
plate or partition plate (WAP/TW,
ZAP/TW and IAP).
Fit end brackets to both ends of a
terminal strip.
End brackets can be omitted adjacent
to PE terminals, with the exception of
WDK/PE and ZPE + WPE 1.5 / R 3.5.
Separation plates can be retrofitted
between cross-connections or sockets
on modular terminals up to a terminal
width of max. 12 mm.
Maintaining the rated insulation
voltage
Dimensions
The dimensions specified are those of
the enclosing housing to the modular
terminal, including fixing components
but excluding tolerances. A mounting
tolerance of 0.2 mm on the specified
terminal width should be allowed for in
the planning.
The required stripping length is specified
in mm for every Weidmüller product.
These lengths, e.g. 6 ± 0.5 mm, ≥ 10 ± 1
mm, must be maintained. This also
applies when using wire end ferrules.
The outside dimensions of crimped
wire end ferrules must comply with
IEC 60947-1, 1999 edition.
Partition plate
A partition plate is required to create a
visual distinction between electric circuits,
or to ensure electrical isolation between
neighbouring cross-connections.
Combinations of various terminals
Always fit an end cover plate or
partition plate (WAP/WTW, AP/TW and
IAP) at changes of profile.
Always fit end cover plates or partition
plates (WAP/WTW, AP/TW and IAP)
between adjacent terminals with
different rated voltages in order to
maintain the respective voltages.
When a PE terminal is required adjacent
to or between associated feed-through
terminals of the same series and size,
the rated voltage and rated impulse
withstand voltage of the feed-through
terminals are not affected.
20
Working on electrical connections
with non-insulated screwdrivers
The use of non-insulated screwdrivers
is only permitted on electrical systems
that have been isolated. To ensure that
the electrical components have been
disconnected from the power supply,
the following five safety rules must be
Installation instructions
adhered to before carrying out any work
and guaranteed for the duration of the
work:
Isolation
Prevention of reconnection
Verification of disconnection
Earthing and short-circuiting
Covering or guarding of adjacent
parts still connected to the power
supply
These five safety rules represent the
safety measures to be taken when working on electrical systems and equipment.
The individual measures to be carried out
taking into account the operational and
local conditions, e.g. exposed high-or
low-voltage lines, cables or switchgear,
are specified in VDE 0105 part 100.
Unused clamping points connected
to the power supply
Suitable covers, e.g. ADP 1…4, must be
fitted to prevent electrical shock caused
through accidental contact with unused
clamping points that could conduct
electricity. The clamping screws of all
unused clamping points, even those
isolated from the electricity supply, must
be screwed fully home.
VDE 0105 part 100
Operation of power supplies:
work on such systems
Perform troubleshooting operations with a
2-pole voltage tester including test prod to
IEC 61243-3.
Tightening torques for clamping
screws
Products with screw with slotted head
Thread
Tightening torque
Non-ferrous screws
Tightening the clamping screw with the
appropriate torque guarantees:
A secure and gas-tight connection,
No mechanical damage to the clamping
parts,
A voltage drop well below the
permissible limit.
The test torque to IEC 60947-1,
supplemented by Appendix C1 of
IEC 60947-1-7, or the torque as
specified by the manufacturer is the
lower value of the permissible torque
range. This ensures that all tests are
satisfied.
The upper value of the permissible torque
range is the maximum torque that may
be applied by the user.
An electric screwdriver should preferably
be set to a torque in the middle of the
range. The values given in the table are
general figures. Torques specific to the
products have been specified directly for
each product.
Cu 2 (CuZn)
Cu 5 (CuNi 60)
[Nm]
[Nm]
M 2.5
0.4…0.45
…
M3
0.5…0.6
0.5…1.0
M 3.5
…
0.8…1.6
M4
1.2…1.9
1.2…2.4
M5
2.0…3.0
2.0…4.0
M6
…
2.5…5.0
Products with screw with slotted head
Products with screw with hexagon socket
Thread
Thread
Tightening torque
Steel screws
M 2.5
Tightening torque
Steel screws
[Nm]
min. 8.8
A 2/A 4-80
[Nm]
[Nm]
M4
1.2…2.4
0.4…0.8
0.4…0.8
M5
2.0…4.0
M3
0.5…1.0
0.5…1.0
M6
3.0…6.0
M 3.5
0.8…1.6
0.8…1.6
M8
6.0…12
M4
1.2…2.4
…
M 10
10.0…20
M5
2.0…4.0
…
M 12
14.0…31
M6
2.5…5.0
…
M 16
25.0…60
21
Installation instructions
Making the connection
Two conductors at one clamping point
The optimum solution for allocation of individual circuits,
labelling and the breakdown into separate functional units is
best achieved by connecting just one conductor at every
clamping point.
However, if it is necessary to connect two conductors with the
same cross-section at one clamping point, then this is possible
with the modular terminals of the W-Series (screw connection).
According to DIN IEC 60999-1, twin wire end ferrules must be
used when connecting two conductors at one clamping point in
modular terminals of the Z-Series (tension clamp).
Clamping yoke conductor connection for large crosssections
It is no longer the case that conductors with large cross-sections
have to be forced into the clamping point. Instead, they can now
be easily laid in the modular terminal.
In addition to the individual form, every type of terminal can
also be supplied in the form of 3-, 4- and 5-pole blocks. All
the blocks are permanently screwed together and therefore
guarantee additional rigidity.
Direct mounting is possible thanks to the elongated holes on
the underside of the terminals. Terminal blocks can be screwed
directly to mounting plates with a 25 mm pitch.
The other advantages are:
But DIN IEC 60999-1 prohibits the connection of two conductors at one point in the screwless IDC system (I-Series ).
Continuous current rating with two conductors
The total current of two conductors may not exceed the
continuous current rating of the modular terminal. The
continuous current rating is the maximum current that a
modular terminal can accommodate without the temperature
rise exceeding 45 K.
Constant force transfer through self-adjusting connection
system
Mounting in any direction
Electric shock protection (finger-proof) to German standard
VBG 4, also with cross-connections
Extremely resistant to distortion
Rated insulation voltage
The rated insulation voltage of the modular terminal does not
change when two conductors are connected properly.
Cross-connections systems
Weidmüller can supply the cross-connections WQV and ZQV –
fully insulated against electric shock – with various numbers of
poles (2- to 20-pole).
Please note that the rated voltage is reduced when using crossconnections.
Protection against electric shock is not provided at the ends of
shortened cross-connections.
These cross-connections must be used with partition plates or
end cover plates in order to maintain the rated voltage.
22
Open cover and
remove screw
assembly.
Insert conductor
and replace screw
assembly.
Close cover and
tighten screw with
Allen key.
Installation instructions
The use of aluminium conductors
Weidmüller modular terminals are suitable
for the direct connection of solid round
and sector aluminium conductors.
In contrast to copper, aluminium exhibits
certain characteristics that must be taken
into account when using this material as
a conductor in electrical engineering.
A thin, non-conductive layer of oxide
forms immediately on the unprotected
surface of the aluminium as soon as it is
exposed to the air. This layer increases
the contact resistance between the
aluminium conductor and the current
bar of the modular terminal. And that, in
unfavourable conditions, can lead to poor
contact which in turn can create a “hotspot” in these conditions.
And in multi-strand conductors the
contact resistances of the individual
strands are added together. Despite
these disadvantages, aluminium conductors can be connected to Weidmüller
modular terminals, provided the reduced
rated currents for aluminium conductors
and the following installation instructions
are adhered to.
1. Scrape the stripped end of the
conductor carefully, e.g. with a knife,
to remove the layer of oxide.
Caution: Do not use brushes, files
or emery paper because particles of
aluminium can be deposited on other
conductors.
2. After removing the layer of oxide, coat
the end of the conductor with a neutral
grease, e.g. acid- and alkali-free
Vaseline, and connect it to the terminal
immediately.
3. Repeat the above procedure if at any
time the conductor is disconnected
and reconnected.
4. The above installation instructions are
valid for solid round or sector
aluminium conductors only.
Solid round and sector conductors
Terminal type
Rated cross-section
W-Series
WDU 2.5
WDU 4
WDU 6
WDU 10
WDU 16
WDU 35
WDU 70
WDU 120
SAK-Series
SAK 2.5
SAK 4
SAK 6
SAK 10
SAK 16
SAK 35
mm2
2.5
4
6
10
16
35
70
120
Reduced
Clamping screw
rated current
thread size
when connecting an
aluminium conductor
“A”
20
M 2.5
27
M3
35
M 3.5
48
M4
64
M5
105
M6
163
M8
230
M 10
Tightening torque
Nm
0.5-0.8
0.6-1.0
1.2-1.6
2.0-2.4
3.0-4.0
4.0-6.0
10.0-12.0
15.0-20.0
2.5
4
6
10
16
35
20
27
35
48
64
105
M 2.5
M3
M 3.5
M4
M4
M6
0.5-0.8
0.6-1.0
1.2-1.6
2.0-2.4
2.0-2.4
4.0-6.0
Multi-strand conductors
W-Series
WFF 35
35
WFF 70
70
WFF 120
120
WFF 185
185
WFF 300
300
105
163
230
300
409
M6
M8
M 10
M 12
M 16
3.0-6.0
6.0-12.0
10.0-20.0
15.5-31.0
30.0-60.0
Installation advice when using
flat cable lugs:
When tightening the terminal it is
advisable to hold the conductor to
prevent deformation of the terminal rail
and to avoid twisting the foot of the
terminal. When connecting multi-strand
aluminium conductors to modular
terminals, it is advisable to use an
aluminium cable lug chosen to match
the type of conductor and connected
according to the instructions of the cable
lug manufacturer. It is necessary to fit a
copper-plated aluminium washer between
the aluminium cable lug and the copper
current bar of the modular terminal. This
is the only way of guaranteeing a reliable
transition between the copper and the
aluminium. Fit the washer in such a way
that the copper side is in contact with the
current bar, and the aluminium side in
contact with the cable lug.
Fixing screw
4
1
2
3
1 Al side
Current bar
5
2 Al conductor
4
Al cable lug
3 Cu-plated Al washer
5
Cu side
23
Requirements
Derating curve (current-carrying capacity curve)
The derating curve shows which
currents may flow continuously and
simultaneously via all possible connections when the component is subjected
to various ambient temperatures below
its upper limit temperature.
Base curve
Derating curve
max. temperature
of component
The upper limit temperature of a
component is the rated value determined
by the materials used. The total of the
ambient temperature plus the temperature rise caused by the current load
(power loss at volume resistance) may
not exceed the upper limit temperature
of the component, otherwise it will be
damaged or even completely ruined.
The current-carrying capacity is hence
not a constant value, but rather
decreases as the component ambient
temperature increases. Furthermore, the
current-carrying capacity is influenced
by the geometry of the component,
the number of poles and the conductor(s)
connected to it.
The current-carrying capacity is determined empirically according to DIN
IEC 60512-3. To do this, the resulting
component temperatures tb1, tb2, tb3
and the ambient temperatures tu1, tu2,
tu3 are measured for three different
currents I1, I2, I3.
The values are entered on a graph with a
system of linear coordinates to illustrate
the relationships between the currents,
the ambient temperatures and the
temperature rise in the component.
The loading currents are plotted on the
24
tg = maximum temperature of component
tu = ambient temperature
In = current
tg
tu
In
a
b
y-axis, the component ambient
temperatures on the x-axis.
Reducing the currents to 80 % results in
the “derating curve” in which the maximum permissible volume resistances
and the measuring uncertainties in the
temperature measurements are taken
into account in such a way that they are
suitable for practical applications, as
experience has shown. If the derating
curve exceeds the currents in the low
ambient temperature zone, which is
given by the current-carrying capacity
of the conductor cross-sections to be
connected, then the derating curve
should be limited to the smaller current in
this zone.
A line drawn perpendicular to the x-axis
at the upper limit temperature tg of the
component completes the system of
coordinates.
The associated average values of the
temperature rise in the component,
∆t1 = tb1-tu1, ∆t2 = tb2-tu2,
∆t3 = tb3-tu3 are plotted for every current
I1, I2,I3 to the left of the perpendicular
line. The points generated in this way are
joined to form a roughly parabolic curve.
As it is practically impossible to choose
components with the maximum permissible volume resistances for the measurements, the base curve must be reduced.
= maximum temperature of component
= ambient temperature
= current
= base curve
= reduced base curve (derating curve)
Requirements
An upper limit temperature that may not
be exceeded in continuous operation is
specified for every Weidmüller modular
terminal.
The continuous operating temperature
depends on the insulating material used
for the modular terminal. According to
EN 60947-7-1 the maximum permissible
temperature rise of a modular terminal is
45 K.
Derating curves
Maximum continuous operating temperature 100 °C – polyamide 66
35
30
25
20
Current [A]
The maximum current that a modular
terminal can accommodate depends on:
The temperature rise in the terminal
The ambient temperature
The cross-section of the conductor
connected to the terminal
15
10
5
0
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
Ambient temperature T [°C]
Maximum continuous operating temperature 120 °C – Wemid
35
30
25
20
Current [A]
The continuous operating temperature
governed by the insulating material,
reduced by the maximum permissible
temperature rise in the terminal as given
by EN 60947-7-1 results in a maximum
ambient temperature in which the modular
terminal can be loaded with its rated
current at least. The graphs on the right
are the current–temperature rise curves for
a rated current of 32 A and the following
three insulating materials:
15
10
5
0
Thermoplastic (polyamide 66)
WEMID
Thermosetting plastic (MF 150 KrG)
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
110
120
130
140
Ambient temperature T [°C]
Maximum continuous operating temperature 130 °C – MF 150 KrG
35
30
25
20
Current [A]
Depending on the insulating material used,
the rated current can be carried up to an
ambient temperature of 55 °C for PA 66,
75 °C for the Weidmüller insulating material
WEMID, or 85 °C for thermosetting plastic
insulating materials (KrG). Above these
temperature limits, the current should be
reduced as shown on these graphs.
15
10
5
0
0
10
20
30
40
50
60
70
80
90
100
Ambient temperature T [°C]
25
Requirements
Insulating materials
In order to do justice to the most
diverse requirements placed on
our products, it is necessary to
use different insulating materials
tailored to the needs of the applications. None of the insulating
materials used by Weidmüller
contain any hazardous substances. Above all they can be
considered RoHS compliant in
accordance with the Restriction
of Hazardous Substances in
Electrical and Electronic Equipment Directive 2002/95/EC.
Furthermore, our insulating
materials contain neither pigments based on heavy metals
nor lead to the formation of
dioxin or furan.
Ceramics
Plastic
Abbreviation
Ceramics
Ceramics are excellent
materials for electrical engineering
because they fulfil all the
requirements. Ceramics are
resistant to heat, fluid and
sparks, and are tested for
leakage currents. Thanks to
their high mechanical strength,
low losses and good heat
resistance, these materials
have a very high chemical
stability and are preferred
because of their very low wear.
Thermosetting plastics
Gemin
KrG
Epoxy resin
EP
Thermosetting plastics exhibit high dimensional stability, low
water absorption, extremely good resistance to leakage
currents and excellent fire resistance.
The continuous operating temperatures are higher than those
of thermoplastics. At higher thermal loads the deformation
resistance of thermosetting plastics is better than that of
thermoplastics.
The disadvantage in comparison with thermoplastics is the
reduced flexibility of thermosetting plastics.
Insulating material
Melamine resin moulding
compound, MF Type 156
(DIN EN ISO 14 528)
inorganic filler
Epoxy resin with
inorganic filler
white
medium yellow
black
highest continuous operating
temperature
high continuous operating
temperature
Colour
Description
high fire resistance
high fire resistance
fluids-repellent
high resistance to leakage
currents
high resistance to leakage
currents
inherently flame-retardant
very good electrical
properties
very high continuous
operating temperature
resistant to high-energy
radiation
halogen- and phosphor-free
flame-retardant agent
1011
1014
inherently flame-retardant
Properties
Specific volume resistance to IEC 93
Ω x cm
>10
10
160
CTI
≥ 600
≥ 600
≥ 600
Upper max. permissible temperature
°C
250
130
160
Lower max. permissible temperature, static
°C
–60
–60
–60
V-0 (5 V-B)
V-0 (5 V-A)
V-0
Electric strength to IEC243-1
Tracking resistance (A) to IEC 112
Flammability class to UL 94
Fire behaviour to railway standard
26
kV / mm
Requirements
Thermoplastics
Wemid
Polyamide
PA
Polyamide
PG GF
Polybutylene
terephthalate, PBT
Wemid is a modified thermoplastic whose properties have
been specially devised to
suit the requirements of our
connectors.
The advantages in comparison with PA are the better fire
protection and the higher
continuous operating
temperature. Wemid fulfils
the strict requirements placed
on applications for railway
rolling stock to NF F 16-101.
Polyamide (PA) is one of the
most common commercial
plastics. The advantages of
this material are its very good
electrical and mechanical
properties, its flexibility and
resistance to breakage.
Furthermore, owing to its
chemical structure PA
achieves good fire resistance
even without the use of
flame-retardant agents.
Glass fibre-reinforced
polyamide (PG GF)
offers excellent dimensional
stability and very good
mechanical properties.
That makes this material ideal
for use in end brackets.
Compared with unreinforced
PA, this material can achieve
UL 94 flammability rating
HB.
This thermoplastic polyester (PBT) offers excellent
dimensional stability (and
is therefore ideal for plug-in
connectors) and a high
continuous operating
temperature.
But the resistance to leakage
currents is lower than other
insulating materials.
special Weidmüller
insulating material
insulating material
insulating material
with or without glass fibre
reinforcement depending on
application
with or without glass fibre
reinforcement depending on
application
dark beige
beige
beige
orange
grey
higher continuous operating
temperature
flexible, virtually unbreakable
excellent
dimensional stability
high
dimensional stability
high
dimensional stability
very good
mechanical properties
good electrical and
mechanical properties
high continuous
operating temperature
flame-retardant substances
do not lead to the formation
of dioxin or furan
high electrical
insulation capacity
improved fire resistance
good electrical and
mechanical properties
halogen- and phosphor-free
flame-retardant agent
self-extinguishing
behaviour
low smoke development
in fire
certified for railway
applications to NF F 16-101
1012
1012
1012
1013
Polycarbonate
PC
halogen-free
flame-retardant agent
1016
25
30
30
28
≥ 30
600
600
500
200
≥ 175
120
100
100
115 / 130
115 / 125
–50
–50
–50
–50
–50
V-0
V-2
HB
V-0
V-2 / V-0
I2 / F2 *)
I2 / F2
*) also certified to
LUL E 1042
27
Tests
Testing the contact stability
Requirements
Contact stability
IEC 60947-7-1 calls for clamping points
to guarantee a permanent and reliable
mechanical and electrical connection.
The high contact stability and reliability of the Weidmüller systems are verified by:
1. Type tests to IEC 60947-7-1
2. More stringent Weidmüller tests
3. National and international approvals
4. Practical applications, i.e. the use of our systems in tough industrial conditions, e.g.
potentially explosive conditions
Tests
Standardised tests ensure that the
conductor connections fulfil the provisions
specified in the standards. IEC 60947-7-1
prescribes a number of tests for conductor connections in modular terminals. One
or more terminals of a certain type are
tested to ensure conformity with certain
limiting values.
Insulation test
Verification of voltage drop
Short-time withstand current test
Ageing test for modular terminals with
tension clamps and IDCs
Special tests
Further tests can be carried out that
exceed the prescribed scope of the
standard tests. These can be performed
either according to the judgement of the
manufacturer or as agreed between
manufacturer and user. For instance,
Weidmüller carries out tests for:
Vibration resistance
Self-resonance vibration behaviour
Shock resistance and vibration
Cold
Dry heat
Damp heat
Salt spray
Sulphur dioxide
Hydrogen sulphide vapour
Gas-tightness
28
Contact stability
1. Type tests to IEC 60947
2. More stringent Weidmüller tests
2.1 Mechanical tests
Vibration test to Weidmüller
specification
Self-resonance vibration behaviour
to IEC 60068-2-6
Shock and vibration test
to IEC 61373
2.2 Operating environment tests
Cold to EN 60068-2-1
Dry heat
to IEC 60512-6 test 11c
Steady-state damp heat
to IEC 60068-2-30
Cyclic damp heat
to IEC 60068-2-30
Salt spray to IEC 60068-2-11
Sulphur dioxide SO2
to IEC 60068-2-42
Hydrogen sulphide vapour H2S
to IEC 60068-2-43
Gas-tightness to IEC 60512-6 test 11n
Tests
Designing the clearances and creepage distances
of electrical equipment
Creepage distances
The design of the creepage distances
depends on the following factors:
the intended
rated voltage
the insulating materials used
insulating materials group
protective measures against soiling
pollution severity
Since April 1997 the provisions of DIN
VDE 0110-1 “Insulation coordination for
electrical equipment in low-voltage
installations” have applied to the design
of clearances and creepage distances.
DIN VDE 0110-1 includes the modified
version of IEC report 664-1 (see also IEC
664-1/Oct 1992).
The rated data resulting from these
provisions – where applicable – are given
in this catalogue for each product.
The following relationships result from
the insulation coordination provisions
when designing the clearances and
creepage distances:
Clearances
The design of the clearances depends on
the following factors:
The overvoltage expected
impulse withstand voltage
Overvoltage precautions taken
Protective measures against soiling
pollution severity
Slots are taken into account when measuring creepage distances if their minimum
width x is as given in the following table:
Pollutionseverity
min. width
x [mm]
1
2
3
4
0.25
1.0
1.5
2.5
If the associated clearance is < 3 mm, the
smallest slot width may be reduced to 1/3
of this clearance.
29
Electrical tests
Insulation test
Testing the short-time withstand current
Standards:
DIN EN 60947-1 section 8.3.3.4.1 / Dec 2002
DIN EN 60947-7-1 section 8.4.3 / Jul 2003
LPV 2203
Table 4 of DIN EN 60947-1. The sine-wave test current (50 Hz)
should comply with Table 12 A of DIN EN 60947-1. Connect the
voltage initially between two neighbouring modular terminals and
then between all the interconnected terminals and the mounting
rail. Increase the voltage with max. 200 V/s and apply it for at
least 5 s.
Implementation:
Mount five new modular terminals on a terminal rail and wire
them with the most unfavourable combination of conductors
and cross-sections. Tighten screws with the torques given in
Test
setup with two
Prüfaufbau
mitgroups
2 Gruppen
Tighten unused clamping screws to simulate the clamping of
a conductor with the maximum possible cross-section. (The
practical, but most unfavourable mounting conditions must be
considered.)
or
test setup
with individual
oder
Prüfaufbau
mit wiring
Einzelverdrahtung
1 2 3 4 5 6 7 8 9 10
1 2 3 4 5 6 7 8 9 10
Earth
Masse
Group 1 1
Gruppe
Group 2 2
Gruppe
Earth
Masse
Group 1 1
Gruppe
Group 2 2
Gruppe
Testing the short-time withstand current
EN 60947-7-1 section 7.2.3 / Jul 2002
For this test, connect the maximum possible conductors to the
modular terminals.
Via the conductor apply a current of 120 A/mm2 for a duration of
1 s to the cross-section connected.
Example of a 35 mm2 modular terminal with a rated connention
of 35 mm2 to Ik with I = 4200 A.
In addition, determine the voltage drop before and after the test.
30
Standard
IEC 60947-7-1 section 7.2.3 / Jul 2002
Implementation
Subject the specimens to a 120 A/mm2 current surge for a
duration of 1 s related to the cross-section connected.
Electrical tests
Verification of impulse withstand voltage
Temperature rise test
Thermal short-circuit rating
Impulse withstand voltage
Temperature rise test
1. Method
Method for verifying the impulse withstand voltage strength for electrical
equipment in low-voltage installations.
IEC 60947-7-1 section 7.2.1 / Jul 2003
Perform the test simultaneously on five
adjacent modular terminals. Connect
these in series with PVC-insulated
conductors with the rated cross-section.
Carry out the test with a single-phase
AC supply until a constant temperature
is reached.
2. Test specimens
At min. 10 contact points, using accessories if these reduce the clearances.
mV
10 mm
4. Implementation
Wiring: Wire the contact points with the
largest possible solid conductor (rated
cross-section). If the clearances are
reduced when using conductors with
wire end ferrules, carry out the electric
strength test with corresponding conductors and ferrules. In the case of PCB
plug-in connectors or PCB terminals,
do not solder these to the PCB.
10 mm
3. Means of testing
Hafely impulse generator type PU 12,
plus oscilloscope if necessary.
Verification of thermal short-circuit
strength
IEC 60947-7-1 section 8.3.4
The purpose of this test is to prove the
ability to withstand a thermal shock, e.g.
triggered by a short-circuit. The test is
carried out on a modular terminal mounted according to the instructions of the
manufacturer, wired with a solid or multistrand conductor with the largest possible
cross-section for this terminal.
A modular terminal must be in a position
to withstand the rated short-time current
for a duration of 1 s. The short-time
current corresponds to a current density
of 120 A/mm2 related to the rated
cross-section.
Test
point
Messpunkt
The test current is specified in amperes
(A).
It corresponds to the rated current of the
terminal.
During the test, no part of the modular
terminals in the middle may exhibit a
temperature rise exceeding 45 K.
Rated cross-section
mm2
0.2
0.5
0.75
1
1.5
2.5
4
6
10
16
25
35
50
70
95
120
Test current
A
4
6
9
13.5
17.5
24
32
41
57
76
101
125
150
192
232
269
Thermal short-circuit
Test
Requirements
Nominal cross-section 2.5 mm2/1.5 mm2
AC test current
120 A/mm2
300 A/180 A
Clamping
screw torque
0.4 Nm
Conductor–conductor voltage drop
DC test current
2.4 A/1.75 A
U 1 before test
3.2 mV
U 2 after test
1.5 x U1
Mounting rail
considered
TS 35
31
Mechanical tests
Testing the voltage drop
Voltage drop test
mV
mV
DIN EN 60947-1 section 8.4.4
Besides the temperature rise test already
mentioned, measuring the voltage drop is
another important factor in the recording
and publication of the rated data.
The voltage drop is determined via the
input and output of a modular terminal,
in other words from conductor to
conductor.
The power supply is 10 % of the rated
current of the conductor.
The maximum permissible conductor–
conductor voltage drop is 3.2 mV. The
conductor–conductor voltage drop of
modular terminals from Weidmüller is
on average < 1 mV.
The maximum permissible change is
50 % of the first value.
Measuring the voltage drop is another
way of determining and assessing the
quality of the actual clamping point when
subjected to loads such as shock and
vibration, rapid temperature fluctuations
in cold conditions as well as dry or damp
heat, industrial atmospheres such as
locating in hazardous SO2 and H2S
gases, and salt spray, in order to verify
the gas-tightness of a contact point. The
temperature rise test is necessary for
investigating the terminal connection as
a whole, i.e. including the insulating
housing, considering the rated current
and overcurrent, plus the short-circuit
condition.
32
≤ 10
I
I
mV
Automatic test station for voltage
drop measurements
Measurement of voltage drops
Measurement of volume resistances
(millivolt method) before and after every
electrical/mechanical/environmental
test
Mechanical tests
Verifying the tightness of the conductor in the
clamping assembly
Tensile test
Verifying the tightness of the
conductor in the clamping assembly
IEC 60947-7-1 section 8.2.2.2
The conductor must be loaded with the
tensile force given in the table below for
1 min evenly and opposite to the direction
of insertion.
The tightness of the conductor must be
assessed using two tests:
1. the flexural test
2. the tensile test
Flexural test
IEC 60947-7-1 section 8.2.2.1 – Test for
damage and unintentional loosening.
This applies to connections with round
copper conductors, i.e. solid, multi-strand
and fine-strand conductors with wire end
ferrules. Tension clamp connections and
IDCs must also withstand this test (where
specified). The test involves moving the
conductor 135 times continuously with
a suitable testing apparatus.
During this test the conductor may not
slip out of the connection nor break in
the vicinity of the terminal.
Test values for flexural and tensile tests on round copper conductors
Conductor cross-section
D**
Distance H ± 13 mm
Load
Tensile force
AWG/MCM
mm
mm
kg
N
0.08
28
6.4
260
0.2*
5*
0.13
26
6.4
260
0.2*
10*
0.2
24
6.4
260
0.3
10
–
22
6.4
260
0.3
20
0.5
20
6.4
260
0.3
30
0.75
mm2
18
6.4
260
0.4
30
1.0
–
6.4
260
0.4
35
1.5
16
6.4
260
0.4
40
2.5
14
9
279
0.7
50
4.0
12
9.5
279
0.9
60
6.0
10
9.5
279
1.4
80
10
8
9.5
279
2.0
90
16
6
12.7
298
2.9
100
25
4
12.7
298
4.5
135
–
3
14.3
318
5.9
156
35
2
14.3
318
6.8
190
–
1
15.9
343
8.6
236
50
0
15.9
343
9.5
236
70
00
19.1
368
10.4
285
95
–
120
000
19.1
368
14
351
0000
19.1
368
14
427
250
22.2
406
14
427
* values specified by manufacturer
D** diameter of insertion hole
33
Mechanical tests
Testing the mechanical strength of connections
The following applies to all tests
according to IEC 60947-7-1:
If the manufacturer calls for a special
form of preparation to the end of the
conductor, the form of preparation used
must be specified in the test report.
The tests are carried out with the
types of conductor specified by the
manufacturer.
The following tests must be carried out
in order to verify the characteristic
mechanical features:
Tightness of the modular terminal on its
mounting (normally a terminal rail)
Mechanical strength of the connections
Tightness of the conductors
Rated cross-section
Tightening torques for clamping
screws
Tightening the clamping screw with a
torque within the specified range
guarantees:
A secure and gas-tight fixing
No mechanical damage to the
clamping parts
A voltage drop well below the
maximum value permitted
The test torque to IEC 60947-1,
supplemented by Appendix C1 of
IEC 60947-1-7, or the torque as
specified by the manufacturer is the
lower value of the tightening torque
range.
This will ensure that all test requirements
are satisfied. The upper value of the
tightening torque range is the maximum
torque that may applied to the screw by
the user. An electric screwdriver should
preferably be set to a torque in the
middle of the range.
Products with screw with slotted head
Thread
M 2.5
M3
M 3.5
M4
M5
M6
Products with screw with slotted head
Thread
M 2.5
M3
M 3.5
M4
M5
M6
Testing the mechanical strength of connections
Tightening torque
Non-ferrous screws
Cu 2 (CuZn)
Cu 5 (CuNi 60)
[Nm]
[Nm]
0.4…0.45
…
0.5…0.6
0.5…1.0
…
0.8…1.6
1.2…1.9
1.2…2.4
2.0…3.0
2.0…4.0
…
2.5…5.0
Products with screw with hexagon socket
Thread
The values given in the table are general
figures. Torques specific to the products
have been specified directly for each
product.
Tightening torque
Steel screws
min 8.8
A 2/A 4-80
[Nm]
[Nm]
0.4…0.8
0.4…0.8
0.5…1.0
0.5…1.0
0.8…1.6
0.8…1.6
1.2…2.4
…
2.0…4.0
…
2.5…5.0
…
M4
M5
M6
M8
M 10
M 12
M 16
Tightening torque
Steel screws
[Nm]
1.2…2.4
2.0…4.0
3.0…6.0
6.0…12
10.0…20
14.0…31
25.0…60
Implementation
Mount five new modular terminals
together in a row on a terminal rail.
Connect and disconnect a conductor
of the rated cross-section five times. Use
a new conductor each time. Tighten
the clamping screws with the IEC torque
or 110 % of the torque specified by the
manufacturer.
Measure the voltage drop before and after
loading the smallest fine-strand crosssection and the rated cross-section (solid
or multi-strand).
34
Additional tests
Shock and environmental tests
Shock resistance
Environmental tests relevant for connection elements
BV 0440 and BV 0430 shock and vibration tests have been
specially designed for maritime conditions.
Vibration tests to BV 0440, diagrams 2 & 3, for all surface craft
Shock test to BV 0430, diagram 9, for all surface and under
water craft
Thermal stability
Industrial atmosphere
Stress corrosion cracking (SCC)
Sulphur dioxide SO2
Hydrogen sulphide
Cold
Dry heat
Humid, fluctuating climate
Salt spray
Operating conditions
The modular terminals can be used in the following standard
conditions:
Ambient temperature -5 °C...+40 °C,
average value over 24 h: +35 °C
Altitudes up to 2000 m above sea level
Relative humidity 50 % at +40 °C,
90 % at +20 °C
Pollution severity 3
Operating conditions for Weidmüller modular terminals
with screw and tension clamp connections
The climatic influences on electrical components
Electrical components are subjected to a very diverse range
of environmental influences. The most significant of these is
the climate. But it is not the natural climate that is critical here,
rather the climate in the immediate vicinity of an electrical
device; influences such as:
Temperature
Relative humidity of the air
Condensation water
Chemicals
Composition of the atmosphere
(e.g. corrosive or radioactive gas constituents, particles, rain)
Weidmüller products may be used in operating conditions that
exceed the normal conditions stated above, e.g.:
Ambient temperatures as low as -60 °C
Ambient temperatures > +55 °C,
and depending on the material
even up to +115 °C
Current values corresponding to the derating curve
To make sure that electrical equipment and installations operate
properly despite climatic influences, standardised environmental
tests have been devised.
35
Additional tests
Environmental tests to IEC 60068-2 / IEC 60512-6
120°
93%
C°
Damp heat, steady state
Test to IEC 60512-6 test 11c
The test verifies whether a component still
functions in the prescribed way under defined conditions of “high relative humidity”.
Dry heat
Test to IEC 60512-6 test 11i
The test verifies whether a component
still functions in the prescribed way under
defined “dry heat” conditions.
Test method:
Constant temperature of +40 °C
at a humidity of 93 %.
Duration: 10 days
Afterwards, the products undergo voltage
drop and function tests plus a visual
inspection.
Test method:
Dry temperature depends on material
and can be up to 130 °C.
Duration: 7 days
Afterwards, the products undergo voltage
drop and function tests plus a visual
inspection.
❄-65°
SO2
Sulphur dioxide
Test to IEC 60068-2-42
The purpose of the test is to assess
The corrosive effects of sulphur dioxide on
contact surfaces made from noble metals,
The tightness and the functional behaviour of electrical connections.
Test method:
10 ppm concentrated SO2 gas at
+25 °C and 75 % humidity
Duration: 10 days
Stored for 48 h at +80 °C
Afterwards, the products undergo voltage
drop and function tests plus a visual
inspection.
C° H2S
50°
25°
Cold
Test to IEC 60068-2-1
The test verifies whether a component still
functions in the prescribed way after being
subjected to defined “low-temperature”
conditions.
Damp heat, cyclic
Test to IEC 60068-2-30
The test verifies whether a component
still functions in the prescribed way
under defined conditions of “high relative
humidity in conjunction with cyclic
temperature fluctuations”.
Hydrogen sulphide
Test to IEC 60068-2-43
The purpose of the test is to assess the
corrosive effects of hydrogen sulphide, as
a constituent of polluted air, on contacts,
plug-in electrical connections and nonsoldered electrical engineering products.
Test method:
Temperature of -65 °C
Duration: 2 days
Afterwards, the products undergo voltage
drop and function tests plus a visual
inspection.
Test method:
Cyclic temperature fluctuations:
12 h, +50 °C, 93 %, humidity
12 h, +25 °C, 97 % humidity
Duration: 10 days
Afterwards, the products undergo voltage
drop and function tests plus a visual
inspection.
Test method:
1 ppm concentrated H2S gas at +25 °C
and 75 % humidity
Duration: 10 days
Stored for 48 h at +80 °C
Afterwards, the products undergo voltage
drop and function tests plus a visual
inspection.
36
Additional tests
Salt spray
Test to IEC 60068-2-11
The purpose of the test is to assess the component’s
resistance to a salt-laden mist.
Test method:
Salt spray NaCl 50 g/l ± 10 g/l
at +35 °C ± 10 °C
Duration: 2 days
Afterwards, the products undergo voltage drop and function
tests plus a visual inspection.
Gas-tightness
IEC 60512-6 test 11n
The connection must exhibit gas-tight zones over at least 75 %
of the points at which the current bar makes contact with the
conductor. The gas-tight zones appear as light-coloured areas
contrasting sharply with the areas that have discoloured during
the storage period in the test atmosphere.
Clamping yoke connection
IDC system
Current bar
Connecting system
Conductor after contact
Cutting bar
Conductor
after contact
Tension clamp connection
Conductor
after contact,
with insulation
removed
Current bar
This system ensures additional protection against corrosion
because the end of the conductor remains protected by the
insulation.
Conductor after contact
37
Additional tests
Checking the service life
Mount five new modular terminals together in a row on a terminal rail and wire these with the rated cross-section. Tighten the
clamping screws with the IEC torque. According to the voltage drop test, the disconnection parts of the test specimens are
subjected to 50 operating cycles in succession without voltage and without load.
Afterwards, store the complete test setup in a dry atmosphere at +130 °C for 168 h.
At the end of the test the test specimens must pass the voltage drop test after being allowed to cool down to the ambient
temperature.
Thermal test
Glow-wire test (GWT)
DIN EN 60695-2-11/Nov 2001. For contact support components/insulating parts that hold electrical connections with
I > 0.2 A in position, the flammability must comply with at least
GWT 750°C to IEC 60695-2-11 with extinguishing within 2 s.
Unless otherwise specified in the individual provisions, the test
specimen passes the glow-wire test when no flames ensue, no
glowing occurs, or both of the following conditions are
fulfilled:
In order to assess the fire propagation behaviour, e.g. due to
burning or glowing parts falling from the test specimen, place
below the specimen a fixed underlay to IEC 60695-2-10, section
5.3, or one made from the material or the components that
normally surround or are positioned below the test specimen.
The distance between the test specimen and the underlay as
specified above must correspond to that of the actual installation
of the component in the final electrical product.
a) Flames or glowing processes are extinguished within 30 s
after removing the glowing wire, i.e. te ≤ ta + 30 s, and
b) If an underlay of tissue paper has been used, the tissue paper
may not be ignited.
Needle-flame test
DIN EN 60695-2-2/Apr 1991. The flame must be applied for
10 s, but 5 s for wall thicknesses < 1 mm or areas < 100 mm2.
After removing the flame, the length of time for which the
specimen continues to burn is measured (if ignition has taken
place at all).
The specimen is deemed to have passed the test when the
burning ceases within 30 s and the tissue paper is not ignited by
any burning or glowing particles falling from the specimen.
38
Plug gauge test
Terminal test with plug gauge
Plug gauge to IEC 60947-1 section
8.2.4.5.2 table 7
Insertion of unprepared round
conductors with the largest
prescribed cross-section
Test with defined gauge, insertion simply
under self-weight
Conductor cross-section
Plug gauge
Form A
Rigid conductor (solid
or multi-strand)
Designation
Diameter
a
mm
Width
b
mm
Designation
Diameter
a
mm
A1
A2
A3
A4
A5
A6
A7
A8
A9
A 10
A 11
A 12
A 13
2.4
2.8
2.8
3.6
4.3
5.4
7.1
8.3
10.2
12.3
14.2
16.2
18.2
1.5
2.0
2.4
3.1
4.0
5.1
6.3
7.8
9.2
11.0
13.1
15.1
17.0
B1
B2
B3
B4
B5
B6
B7
B8
B9
B 10
B 11
B 12
B 13
1.9
2.4
2.7
3.5
4.4
5.3
6.9
8.2
10.0
12.0
14.0
16.0
18.0
mm2
1.5
2.5
4
6
10
16
25
35
50
70
95
120
150
Form B
Permissible deviation for a and b
mm
0 - 0.05
0 - 0.06
0 - 0.07
0 - 0.08
39
ATEX
Modular terminals for explosive conditions
Modular terminals for explosive conditions –
complying with the European ATEX Directive 94/9/EC
Principles
IEC 60947-7-1 (EN 60947-7-1/VDE 0611 part 1) and
IEC 60947-7-2 (EN 60947-7-2/ VDE 0611 part 3) specify the
basic provisions for modular terminals or PE terminals.
In addition, EN 60079-0 (IEC 60079-0/ VDE 0170/0171 part 1),
and for increased safety “e” EN 60079-7 (IEC 60 079-7/
VDE 0170/0171 part 6), cover their use in potentially explosive
areas.
According to EN 60079-7, modular terminals for explosive
conditions are so-called explosion-proof components.
Components are those parts and assemblies that are
necessary for the safe operation of devices and protective
systems without themselves fulfilling an autonomous function.
According to the European ATEX Directive 94/9/EC, modular
terminals for explosive areas are not marked with the CE symbol.
Modular terminals for explosive areas are certified for the
increased safety “e” type of protection.
The European offices nominated in the ATEX Directive 94/9/EC,
have been issuing EC Type Examination Certificates for the socalled ATEX generation complying with EN 60079-0/60079-7
and the ATEX Directive 94/9/EC since 1997. The condition for
this is registration of the manufacturer’s quality control system.
Weidmüller has been registered since 1997. Copies of the EC
Type Examination Certificate, the certification document and the
declaration of conformity can be supplied in electronic format
upon request.
The earlier certificates (A to D generations) issued according to
the Explosive Atmospheres and Gassy Mines Directive
76/117/EEC have not been valid since 1 July 2003. However,
existing installations are not affected by this.
The clamping yoke, tension clamp and IDC systems of the
modular terminals ensure enhanced protection against gradual
loosening and are designed in such a way that the ends of
fine-strand conductors do not need to be prepared.
40
Marking
ATEX Directive 94/9/EC: T II 2 G D
Equipment for explosive conditions
T
II 2 G Equipment group II category 2 (Zone 1 equipment)
II 2 D Equipment group II category 2 (Zone 21 equipment)
EN
50014/19: EEx e II
E
Conformity with EN standards
Ex
Explosion protection
e
Increased safety
II
Equipment group
KEMA 97ATEX4677U (example)
KEMA Notified body
ATEX Conformity with 94/9/EC
U
Component
ATEX
Confirmed according to the European
ATEX Directive 94/9/EC
Electrical data
The values for current-carrying capacity as
stated in the catalogue are based on an
ambient temperature of 40 °C. When
loaded with the rated current +10 %, the
temperature of the current bar of the modular terminal may not rise more than 40 K.
Taking into account a further safety factor
according to EN 60079-0, we reach the
following definitions:
Temperature class
Ambient temperature
T6, T5
–50 °C to +40 °C
T4 to T1
–50 °C to +55 °C
If the actual ambient temperature is higher,
then the permissible rated current must be
reduced accordingly.
The continuous operating temperature
according to EN 60079-0 is 130 °C for the
Wemid and KrG materials, 80 °C for PA.
Accessories
The accessories listed can be used and is
included in the ATEX certification. In order
to maintain the creepage distances and
clearances for the EEx e category, end
cover plates and/or partition plates should
be used as specified.
Design for EEx i
Modular terminals for intrinsically safe
circuits “i” are said components whose
temperature rise behaviour is specified
just like their electrical data. Therefore,
they do not need a EC Type Examination
Certificate when used in intrinsically safe
circuits. To enable unambiguous marking
and ready identification, the use of blue
terminals is recommended. These
terminals comply with the requirements
of category EEx e.
Accessories
The accessories listed can be used and
comply with EN 60079-11
(IEC 60079-11/VDE 0170/0171 part 7).
Installation
Current-carrying capacity of cables and lines
Rated currents
Cross-section
VDE 0298 part 4 (IEC 364-5-523) Current-carrying
capacity of lines
Ambient temp. 30 °C,
Factor 1.0, Instal. type C
+ 3 current-carrying wires
PVC 70 °C
A
1.5
2.5
4
6
10
16
25
35
50
70
90
120
150
185
240
300
17.5
24
32
41
57
76
101
125
150
192
232
269
309
353
415
520
Ambient temp. 40 °C,
Factor 0.87, Instal. type C
+ 3 current-carrying wires
PVC 70 °C
A
15.225
20.88
27.84
35.67
49.59
66.12
87.87
108.75
130.5
167.04
201.84
234.03
268.83
307.11
361.05
452.4
EN 50019. 2nd edition Type
of ignition “increased safety”
Connection terminals
Ambient temperature 40 °C,
40 K temperature rise
Current equivalent to the
conductor connected
A
15
21
28
36
50
66
88
109
131
167
202
234
267
307
361
452
The general statements regarding
standard applications are also valid for
EEx i applications. In particular, the EEx i
requirements always apply to the entire
circuit, i.e. also to parts in areas not at
risk of explosion.
Clamping of two conductors in EEx e
applications
It is generally permitted to connect two
conductors per clamping point in all the
terminals of our W-series. However,
please make sure that these have the
same cross-section and do not exceed
the rated cross-section.
The current-carrying capacity of cables and lines in the installation is defined by
VDE 0298 part 4 as normal at an ambient temperature of 30 °C. At 40 °C the
operating current must be reduced by a factor of 0.87.
41
ATEX
ATEX directives
The old directive Explosive Atmospheres
and Gassy Mines Directive 76/117/EEC
was superseded by the new directive
94/9/EC, also known as ATEX 95 (ATEX:
ATmosphère EXplosive = potentially
explosive atmosphere), on 1 July 2003.
Only the new directive is now valid, which
is one of the so-called “New Approach”
directives. It applies in all the countries
of the European Union plus Iceland,
Liechtenstein and Norway. In all these
countries the directive applies to the sale
and operation of products that have been
specially developed for use in potentially
explosive atmospheres in which gases,
vapours, mists or dusts prevail. A new
development is the inclusion of mining
operations and purely mechanical
devices.
The ATEX directive has been in force
since March 1996. Its use up until
30 June 2003 (transitionary period) was
optional and existing directives remained
applicable as well. But since 1 July 2003
all new installations and equipment for
use in potentially explosive areas must
comply with the ATEX directive and be
certified accordingly. However, the
previous breakdown into zones (Zone
0, 1 or 2) and classes of protection (e.g.
“i”: intrinsic safety, “e”: increased safety)
still remains in force.
42
Class of protection
Type of protection
Code
CENELEC EN
IEC
Product category
explosion prot.
General requirements
Oil immersion
Pressurised apparatus
Powder filling
Flameproof enclosure
Increased safety
Intrinsic safety
Intrinsic safety
Equip. for zone 2 (EEx n)
Encapsulation
–
o
p
q
d
e
ia
ib
n
m
50014
50015
50016
50017
50018
50019
50020
50020
50021
50028
60079-0
60079-6
60079-2
60079-5
60079-1
60079-7
60079-11
60079-11
60079-15
60079-18
–
2
2
2
2
2
1
2
3
2
Classification for potentially explosive areas
CENELEC
classification
IEC60079-10
Presence of potentially
explosive atmosphere
Product
category
US classification NEC 500
Combustible
media
Zone 0
Zone 20
Zone 1
Zone 20
Zone 2
Zone 22
permanent, long-term
or frequently
occasionally
1G
1D
2G
2D
3G
3D
Class I, Div 1
Class II, Div 1
Class I, Div 1
Class II, Div 1
Class I, Div 2
Class II, Div 2
gases, vapours
dust
gases, vapours
dust
gases, vapours
dust
rarely and briefly
Explosion groups
Gas (e.g.)
CENELEC
NEC 500
Propane
Ethylene
Hydrogen
Acetylene
Methane (mining)
IIA
IIB
IIC
IIC
I
D
C
B
A
mining (MSHA)
Max. surface
temperature (°C)
Temperature class
CENELEC
Temperature class
NEC 500-3
450
300
280
260
230
215
200
180
165
160
135
120
100
85
T1
T2
–
–
–
–
T3
–
–
–
T4
–
T5
T6
T1
T2
T2A
T2B
T2C
T2D
T3
T3A
T3B
T3C
T4
T4A
T5
T6
Temperature classes
ATEX
ATEX codes
Example of marking –
modular terminal WDK 4 N V
1
Rated voltage
2
CENELEC type of protection “e”–
increased safety
Equipment group II – above ground
(gases, vapours, mists, dusts)
3
Certificate number
4
Rated conductor cross-section
5
Equipment group II – above ground
1
4
2
5
3
6
(gases, vapours, mists, dusts)
Product category 2 – for use in
zone 1 or 21
Approved for use in gases “G”
and/or dusts “D”
6
European symbol for explosion
protection
Example of marking – enclosure fitted
with components for enhanced safely
1
Approved for use in gases “G”
2
Product category 2 – for use in zone 1
1
7
3
Product category 2 – for use in zone 1
2
8
4
Approved for use in dusts “D”
3
9
5
CENELEC type of protection “e” –
4
10
5
11
6
12
increased safety
6
Max. surface temperature without
ignition of dust 100 °C
7
Equipment group II – above ground
(gases, vapours, mists, dusts)
8
Temperature class T6
9
Class of protection of housing > IP 64
10
Certificate number
11
Rated voltage
12
Rated conductor cross-section
43
Appendix
Worldwide activities
A
ADN
AUS
B
BA
BG
BR
BRN
BY
CDN
44
Austria
Weidmüller Ges.m.b.H.
Industriezentrum Nö Süd
Straße 2, Objekt M2
2355 Wiener Neudorf
Phone +43 2236 6708-0
Fax +43 2236 6708-199
[email protected]
CH
Switzerland
Weidmüller Schweiz AG
Rundbuckstrasse 2
8212 Neuhausen am Rheinfall
Phone +41 52 6740707
Fax +41 52 6740708
mail:[email protected]
www.weidmueller.ch
Yemen
Please contact
Weidmüller Middle East
United Arab Emirates
CN
China
Weidmüller Interface International
Trading (Shanghai) Co., Ltd.
Unit 503–504 Central Plaza,
No. 227 Huangpi N. Rd.,
200003 Shanghai
P.R. China
Phone +86 21 63758766
Fax +86 21 63759077
www.cnweidmuller.com
Australia
Weidmüller Pty. Ltd.
43 Huntingwood Drive
Huntingwood,
NSW, 2148
P.O.Box 6944
Blacktown
NSW, 2148
Phone +61 2 9671-9999
Fax +61 2 9671-9911
[email protected]
www.weidmuller.com.au
Belgium
Weidmüller Benelux B.V.
Ambachtenlaan 11 A
3001 Heverlee
Phone +32 16 395990
Fax +32 16 401051
[email protected]
Bosnia-Herzegovina
BH ES Elektrosistem d.o.o.
ul. J. Veselinovica 18
78000 Banja Luka
Bosna
Phone +387 51 317500
Fax +387 51 317500
[email protected]
www.elektrosistem.co.yu
Bulgaria
Weid-Bul eOOd
ul. Nezabravka 33 A,
bl. 315/3/10
1113 Sofia
Phone +359 2 9632560
Fax +359 2 9631098
[email protected]
Brazil
Conexel Conexoes Elétricas Ltda.
Rua Garcia Lorca, 176- V. Paulicéia,
09695-900, Sao Bernado do
Campo - SP, Brasil
Phone +55 11 43669600
Fax +55 11 43621677
[email protected]
www.conexel.com.br
Bahrain
Khayber Trading Company
P.O. Box 1976 Manama,
Bahrain
Phone +973 720 747
Fax +973 720 331
[email protected]
Belarus
TECHNIKON Ltd.
Oktyabrskaya Str. 16/5
Apt. 704
220030 Minsk
Belarus
Tel. +375 17 2104626
Fax +375 17 2275830
[email protected]
Canada
W Interconnections Canada Inc.
10 Spy Court, Markham,
Ontario L3 R5 H6
Phone +1 905 475-1507
Fax +1 905 475-5855
[email protected]
www.weidmuller.ca
CO
Columbia
Automatizacion Avanzada S. A.
Carrera 97 No. 42 A-23 B3,
Santafe de Bogotá Colombia.
Phone +57 1 4132048
Fax +57 1 4159788
mgallegos@
automatizacionavanzada.com
CR
Costa Rica
ELVATRON S.A.
400 Norte
Banco Costa Rica, la Uruca,
San José, Costa Rica
Phone +506 2 961060
Fax +506 2 960328
[email protected]
CZ
D
DK
E
Czech Republic
Weidmüller s. r. o.
Videnska ul. 340
25242 Vestec u Prahy
Phone +420 2 44001400
Fax +420 2 44001499
[email protected]
Germany
Weidmüller GmbH & Co. KG
Ohmstraße 9
32758 Detmold
Phone +49 5231 1428-0
Fax +49 5231 1428-116
[email protected]
www.weidmueller.de
Denmark
Knud Wexøe A/S
Skaettekaeret 11
P.O. Box 152
2840 Holte
Phone +45 45465800
Fax +45 45465801
[email protected]
Spain
Weidmüller S. A.
Narcis Monturiol 11-13
Pol.Ind. Sudoeste
08960 Sant Just Desvern
Barcelona
Phone +34 93 4803386
Fax +34 93 3718055
[email protected]
www.weidmuller.es
ES
El Salvador
Please contact
ELVATRON S. A., Costa Rica
EST
Estonia
Alter Electric OÜ
Türi 6, 11313 Tallinn, Estonia
Phone +372 65 19 666
Fax +372 65 19667
[email protected]
ET
Egypt
Standard Electric
5, Heliopolis Hospital Street,
Cairo, Egypt
Phone +20 2 6444182
Fax +20 2 6444191
[email protected]
F
France
Weidmüller EURL
12, Chaussée Jules César
B.P. 263 Osny
95523 CERGY PONTOISE Cedex
Phone +33 1 34245500
Fax +33 1 34245501
[email protected]
www.weidmueller.com
IL
IND
FIN
Finland
JUHA-ELEKTRO OY
Kylvöpolku 6
P. O. Box 57
00681 Helsinki
Phone +358 9 478411
Fax +358 9 47841311
GB
United Kingdom
Weidmuller Ltd.
1 Abbey Wood Road
Kings Hill
West Malling
Kent ME19 4YT
Phone +44 1732 877000
Fax +44 1732 873873
[email protected]
www.weidmueller.com
GCA
Guatemala
Please contact
ELVATRON S. A., Costa Rica
GR
Greece
Electrorama S.A.
1 An. Martali Str.
41335 Larissa
Phone +30 2410 552533
Fax +30 2410 283463
[email protected]
H
HK
HKJ
Hungary
Weidmüller Kereskedelmi Kft
Dombóvári út 13
1117 Budapest
P. O. Box 22
1507 Budapest
Phone +36 1 464-7888
Fax +36 1 3827701
[email protected]
Hong Kong
United Equity Limited
Suite B, 11/F International Industrial
Centre
2-8 Kwei Tei Street, Fotan
Shatin, N. T.
Phone +852 26876739
Fax +852 26876735
Jordan
Please contact
Weidmüller Middle East
United Arab Emirates
HO
Honduras
Please contact
ELVATRON S. A., Costa Rica
HR
Croatia
Elektro Partner d.o.o.
Radnicka cesta 22
10000 Zagreb
Phone +385 1 6184793
Fax +385 1 6184795
[email protected]
I
Italy
Weidmüller S.r.l.
Via Albert Einstein 4
20092 Cinisello Balsamo
Milano
Phone +39 02 660681
Fax +39 02 6124945
[email protected]
www.weidmuller.it
Israel
A.U. Shay Ltd.
Embar Street 23/25
P.O.Box 10049
Petach-Tikva 49222
Phone +972 3 9233601
Fax +972 3 9234601
[email protected]
India
Weidmüller Representative office
Vijay Dattani
119, Prashanth Extention
Whitefield
Bangalore - 560 066
Phone +91 80 8453999
Fax +91 80 8453999
IR
Iran
TAF Co.
72, Iranshahr Av.
Unit 5,
15816 Teheran
Phone +98 21 831-7851
Fax +98 21 882-0268
[email protected]
IRL
Ireland
A.P. Haslam Ltd.
14 Sunshine Ind. Estate
Crumlin Road
Dublin 12
Phone +353 1 453-2522
Fax +353 1 453-2949
[email protected]
IS
Iceland
Samey Automation Center
Lyngas 13, 210 Garoabaer,
Island
Phone +354 510 5200
Fax +354 510 5201
[email protected]
J
Japan
Nihon Weidmüller Co. Ltd.
Asahi Seimei Bldg. 11F
1-14-1 Fuchucho Fuchu-shi
Tokyo 183-0055 Japan
Phone +81 42 330-7891
Fax +81 42 330-7895
www.weidmuller.co.jp
KWT
Kuwait
NOURI Industrial Establishment Co.
P.O.Box 2829,
Safat 13029 Kuwait
Phone +965 4333355
Fax +965 4344085
[email protected]
L
Luxembourg
Please contact
Weidmüller Belgien, Heverlee
LT
Lithuania
ELEKTROS IRANGA
Tinklu g.29a, 5319 Panevezys, Lithuania
Phone +370 45582828
Fax +370 45582727
[email protected]
LV
Latvia
Elektrosistemas
Kuldigas St. 51,
1046 Riga, Latvia
Phone +371 7070140
Fax +371 7070141
[email protected]
MA
Morocco
Energy-Technics Transfer, S.A.
23 Boulevard Lieutnant
Mohamed El Bakai Tamri
Casablanca 20250
Phone +212 2 343700
Fax +212 2 343699
MAL
Malaysia
Please contact
Weidmüller Singapore
Appendix
MEX
Mexico
W Interconnections, S.A. de C.V
Av. Ingenieros Civiles No. 204-B,
Conjunto Industrial Chachapa
72990 Chachapa,
Puebla Mexiko
Phone +52 222 2866247/48/49
Fax +52 222 2866242
[email protected]
PL
Poland
Weidmüller Sp. z o.o.
ul. Gol˛edzinowska 10
03-302 Warszawa
Poland
Phone +48 22 5100940
Fax +48 22 5100941
[email protected]
www.weidmuller.pl
MK
Macedonia
ES MK Elektrosistem d.o.o.
Ul. Bulevar III makedonske brigade bb
91000 Skoplje
Macedonia
Phone +389 91 460295
Fax +389 91 460298
[email protected]
PY
Paraguay
Rewo Paraguay S.A.
Sucre 2590 esq Emeterio Miranda
Asunción
Paraguay
Phone +595 21 60 60 13
Fax +595 21 60 60 13
[email protected]
Norway
Siv. Ing. J. F. Knudtzen A/S
Billingstadsletta 97
1396 Billingstad
P.O. Box 160
1378 Nesbru
Phone +47 66 983350
Fax +47 66 980955
[email protected]
Q
RP
RUS
S
N
NIC
Nicaragua
Please contact
ELVATRON S. A., Costa Rica
NL
Netherlands
Weidmüller Benelux B.V.
Franciscusweg 221
1216 SE Hilversum
Postbus 1505
1200 BM Hilversum
Phone +31 35 6261261
Fax +31 35 6234569
[email protected]
www.weidmuller.nl
RA
RC
NZ
New Zealand
Cuthbert S. Steward Limited
27 Te Puni Street
POB 38496 Petone
Petone, Wellington
Phone +64 4 5686156
Fax +64 4 5686056
OM
Oman
Please contact
Weidmüller Middle East
United Arab Emirates
RCH
RI
P
PA
PE
Portugal
Weidmüller - Sistemas de
Interface, S. A.
Estrada Outeiro Polima, Lote B,
N° B2, Escritório 2 - Abóboda
2785-518 Sao Domingos de Rana
Lisboa
Phone +351 21 4459190
Fax +351 21 4455871
[email protected]
www.weidmuller.pt
Panama
Please contact
ELVATRON S. A., Costa Rica
RL
RO
Peru
TECNOLOGÍA ELÉCTRICA
Y SOLUCIONES S.A.C.
Calle Huandoy 501, Lima 32 – Perú
Phone +51 1 5620004
Fax +51 1 5620004
[email protected]
ROK
PK
Pakistan
Access Technology Networks
[Pvt] Ltd.
Flat 1, 2nd Floor, Panther Plaza
16B, F8, MARKAZ
Islamabad
Pakistan
Phone +92 51 2254371-72
Fax +92 51 2261086
[email protected]
Qatar
Please contact
Weidmüller Middle East
United Arab Emirates
Argentina
CPI SA
Bauness 2660
1431 Buenos Aires
Phone +54 11 45238008
Fax +54 11 45220546
[email protected]
Taiwan
Fittatek Corp., Ltd.
12 F No. 185 Fu-Kuo Rd,
Tso Ying Dist,
Kaohsiung, Taiwan R.O.C.
Phone +886 7556-0858
Fax +886 7556-3279
Chile
Felipe Bahamondes S.A./ATS AGRO
Servicios Agroindustriales
Maria Luisa Santander 0475
Providencia
Casilla 3425
Santiago
Phone +56 2 341-1271
Fax +56 2 341-1275
[email protected]
Indonesia
P. T. Nego Electrindo
Komplek Perkantoran Kramat Centre
Blok-A 18 Jl Kramat Raya No. 7-9
Jakarta 10450
Phone +62 21 3156218
Fax +62 21 3156219
Libanon
Progress Engineering & Trading Enterprises
P.O. Box 11-1111
Pharaon Bldg., Opp Electr. du Liban
Chafaca Str., Al Nahr
Beirut - Libanon
Phone +961 144 4664
Fax +961 144 4664
[email protected]
Romania
Weidmüller Interface
Romania S. R. L.
Jud. Maramures Nr. 944
437345 Tautii Magheraus
Phone +40 1 3220230
Fax +40 1 3228857
[email protected]
South Korea
Weidmüller Co., Ltd.
2 floor Wooam B/D 46-27
Samsung2-Dong, Kangnam-Ku
Seoul
Korea, Zip: 135-868
Phone +82 2 5160003
Fax +82 2 5160090
[email protected]
SA
SA
SGP
SK
SLO
Philippines
Tradepoints, Inc.
3rd Floor PM Santiago Bldg.
5081 P. Burgos Cor.,
San Mateo Streets
Makati Manila
Phone +63 2 8993294
Fax +63 2 8993306
Russia
Weidmüller Representative office
Shabolovka street 2
119049 Russia, Moskau
Phone +7 095 771-6940
Fax +7 095 771-6941
[email protected]
www.weidmueller.ru
Sweden
Weidmüller AB
Stockholm, Arenavägen 39,
12177 Johanneshov
P.O. Box 10120
12128 Stockholm-Globen
Phone +46 771 43 00 44
Fax +46 8 7272480
[email protected]
Saudi Arabia
Al Abdulkarim Trading
P.O. Box 5777, Dammam
31432 Saudi Arabia
Phone +966 3 833-7110
Fax +966 3 833-8242
[email protected]
Saudi Arabia
Saudi Electric Supply Co.
P.O. Box 3298, Al Khobar
31952 Saudi Arabia
Phone +966 3 882-9546227
Fax +966 3 882-9547
[email protected]
Singapore
Weidmüller Pte. Ltd.
Cititech Building
629 Aljunied Road #05-05
Singapore 389838
Phone +65 6841 5311
Fax +65 6841 5377
[email protected]
www.weidmuller.com.sg
Slovenia
ELEKTROSPOJI d.o.o.
Stegne 25
1000 Ljubljana
Phone +38 6 15113810
Fax +38 6 15111604
[email protected]
Syria
Please contact
Weidmüller Middle East,
United Arab Emirates
T
Thailand
Pisanu Engineering &
Construction Co. Ltd.
800/2 Asoke-Dindaeng
Road Dindaeng
Bangkok 10400
Phone +66 2 2459113
Fax +66 2 2463214
[email protected]
Turkey
Weidmüller Elektronik Ticaret Ltd.
Sirketi
Kore Sehitleri Cad. 34/1-7
80300 Zincirlikuyu – Istanbul
Phone +90 212 2730830
Fax +90 212 2740874
[email protected]
Ucraine
TEKO Interface
Per.Industrialny 2
03056 - Kiev
Phone +380 04463 57760
Fax +380 04463 91082
[email protected]
UAE
U.A.E. United Arab Emirates
Weidmüller Middle-East
P.O. Box 62448
Dubai
Phone +971 4 3522215, 3523043
Fax +971 4 3599950
USA
USA
W-Interconnections, Inc.
821 Southlake Boulevard, Richmond, VA 23236
Phone +1 804 7942877
Fax +1 804 3792593
[email protected]
www.weidmuller.com
VN
Vietnam
Thien Nghi Trading Pte
60B Tan Da Street
District 5 Ho Chi Min
Phone +84 8 8555387
Fax +84 8 8549304
YU
Serbia and Montenegro
ES YU Elektrosistem d.o.o.
ul. Pariske komune 41
11070 Novi Beograd
Serbia
Phone +381 11 697212, 693608
Fax +381 11 697212, 693608
[email protected]
www.elektrosistem.co.yu
Y
Venezuela
Somerinca C. A.
Edificio Esteban Piso 2
Calle Vargas Bolleita Notre
Caracas 1070 A
Venezuela
Phone +58 212 2352748
Fax +58 212 2385625
[email protected]
ZA
South Africa
RAD Interface Pty. Ltd.
5 Bundo Road
Sebenza Extension
Edenvale 1609
P.O.Box 193
Edenvale 1610
Phone +27 11 452-1930
Fax +27 11 452-6455
[email protected]
D
Other countries
Weidmüller Interface GmbH & Co. KG
P.O. Box 3030
32720 Detmold
Klingenbergstraße 16
32758 Detmold
Phone +49 5231 14-0
Fax +49 5231 14-20 83
[email protected]
www.weidmueller.com
A
Group companies
A
Agency abroad
A
Without own Agency
Slovakia
Elektris s.r.o.
Racianska 188
SK 83153 Bratislava, Slovakia
Phone +421 2 49200113
Fax +421 2 44680328
[email protected]
SYR
TR
UA
45
We cannot be absolutely certain that the print media or software made
available to our customers for ordering purposes is 100% free from errors.
We do our very utmost to correct such errors as soon as we are made
aware of them. For this purpose, after publishing the print media we list
all the corrections in the Internet at www.weidmueller.com, stating the part
and page to which the correction applies.
This database in the Internet forms part of this catalogue.
Our terms and conditions of business apply to all orders. The terms and
conditions of business can be viewed in the Internet on the pages of the
group company to whom you send your order. Upon request we can also
send you a copy of our terms and conditions of business.
46
www.weidmueller.com
Argentina
Australia
Austria
Bahrain
Belarus
Belgium
BosniaHerzegovina
Brazil
Bulgaria
Canada
Chile
China
Colombia
Costa Rica
Croatia
Czech Republic
Denmark
Egypt
El Salvador
Estonia
Finland
France
Germany
Greece
Guatemala
Honduras
Hong Kong
Hungary
Iceland
India
Indonesia
Iran
Ireland
Israel
Italy
Japan
Jordan
Kuwait
Latvia
Lebanon
Lithuania
Luxembourg
Macedonia
Malaysia
Morocco
Mexico
Netherlands
New Zealand
Nicaragua
Norway
Oman
Pakistan
Panama
Paraguay
Peru
Philippines
Poland
Portugal
Qatar
Romania
Russia
Saudi Arabia
Serbia/
Montenegro
Singapore
Slovakia
Slovenia
South Africa
South Korea
Spain
Sweden
Switzerland
Syria
Taiwan
Thailand
Turkey
Ucraine
United Arab
Emirates
United Kingdom
USA
Venezuela
Vietnam
Yemen
Weidmüller is the leading manufacturer of components
for electrical connection technology. The Weidmüller
product portfolio ranges from terminal blocks,
PCB connectors and terminals, protected components,
Industrial Ethernet components and relay sockets to
power supply and overvoltage protection modules
suitable for all applications. Electrical installation and
marking material, basic I/O components and a variety of
tools round off the range. As an OEM supplier, the
company sets global standards in the field of electrical
connection technology.
Order No:
5651110000/07/2005/DMMD
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