Filters for Power Lines Filter Cabinets (300 to 1600 A)

Filters for Power Lines
Filter Cabinets
(300 to 1600 A)
Series/Type:
B84299G
Date: January 2004
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information contained therein without EPCOS' prior express consent is prohibited.
EPCOS AG is a TDK Group Company.
Filters for power lines
B84299G
Filter cabinets (300 to 1600 A)
Features
General-purpose use through design
with separate lines without intercoupling
Use of single chokes.
Thus the insertion loss values are not
reduced under all operating current
conditions and not when operated with
artificial mains networks (AMN) or other
equipment with high leakage currents
Cable connection in filter eliminating
extra mechanical effort
Insertion loss to CISPR 17
Stopband attenuation to 40 GHz
Design
The filter cabinet consists of 2 areas.
The bottom area holds the low-frequency filter circuitry consisting of capacitors and chokes.
The top area is RF-tight. This is where the cables leading to the shielded room are connected.
The 2 areas of the cabinet are joined by an RF-tight wall, integrated into which there are coaxial
feed-through capacitors. The wall is of high-grade Cr-Ni steel material, ensuring constant and
non-corroding contact with the feed-through capacitors even in an unfavorable environment.
Access and connection
The bottom area is accessible through two doors, each fitted with a recessible handle and lock.
The top area has a specially designed lid with a dual seal that is bolted RF-tight to the cabinet.
In each area there are copper terminal rails for cable connection. Modified cable inlets and outlets
are available on inquiry.
Electrical design
Filtering is separate for each line. This maintains the specified attenuation even in the presence
of leakage current and on full load.
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Filters for power lines
B84299G
Filter cabinets (300 to 1600 A)
Capacitor configuration
The capacitors are able to handle peak current far in excess of the rms current. In this way they
can discharge high-energy transients without suffering damage.
The capacitors are self-healing and come with integrated overpressure disconnection. Consequently a capacitor will not burst under inadmissible overload or at the end of its service life.
RF-tight cable routing from top cabinet area to shielding wall
RF-tight cable routing uses flexible connector fittings with an inner diameter of 80 mm. The connector fittings must be ordered separately.
There are matching openings for the connector fittings on the rear of the cabinet. Unused openings can be sealed with special cover flange plates.
Refer to the chapter on installation accessories for connector fittings and cover flange plates.
Installation
On the front and rear of its base, the filter cabinet has a plate that can be unscrewed. After removing these plates, a cabinet can be simply moved with a forklift truck for example. There is a
ring at each corner on the top for use of a crane.
For enhanced protection against shock, there are openings in the bottom so that the cabinet can
be bolted to the floor.
Protective measures (grounding)
The high capacitances between the lines and ground require special protective measures. If there
are no product-specific requirements, protection with a secondary ground wire (cross section min.
10 mm2) in accordance with EN 50178 is necessary. For this purpose the filter case have connecting bolts at each end.
Resistors are incorporated in the filter to discharge capacitors after turn-off.
EMP protection
For overvoltage protection, the cabinet can be fitted with block varistors (model SIOV B80K…).
The advantage of varistors is the absence of follow-up current once the overvoltage has decayed.
These block varistors are also notable for their high discharge capacity (max. 100000 A for an
8/20 µs curve per line).
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Filters for power lines
B84299G
Filter cabinets (300 to 1600 A)
Circuit diagramm
Insertion loss αe (typical values at Z = 50 Ω)
Asymmetrical measurement circuit
to MIL-STD-220A
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Filters for power lines
B84299G
Filter cabinets (300 to 1600 A)
General technical data
Rated voltage
VR
440
250
Number of lines
V
V
Line/line
Line/case
4
Rated frequency
fR
50/60
Rated current
IR
See characteristics
Maximum admissible
overcurrent
Iover
Test voltage
Vtest
75 IR for 50 ms
10 IR for 1 s
2 IR for 1 min
1.4 IR for 15 min
1200 VDC, 2 s
1200 VDC, 2 s
Voltage drop/phase
∆V
<1
Maximum DC resistance
Rmax
See characteristics
Permissible ambient
temperature
TA
25/+40
Climatic category
(EN 60068-1)
Hz
Referred to +40 °C ambient
temperature
Line/line
Line/case
% Of VR at 50 Hz and IR
25/085/56
Per line
°C
25 °C/+85 °C/56 days damp
heat test
Characteristics and ordering codes
IR
A
300
500
1600
Rmax
mΩ
<1
< 0.5
< 0.03
Dimensional
drawing
1
1
2
1) ... = Ordering code will be completed by the producer.
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Approx. weight
kg
400
450
800
Ordering code1)
B84299G0069B...
B84299G0059B...
B84299G0065B...
Filters for power lines
B84299G
Filter cabinets (300 to 1600 A)
Dimensional drawings
Dimensional drawing 1
4 x 300 A / 4 x 500 A
Paint color: RAL 7035 (light gray, semigloss)
6
Filters for power lines
B84299G
Filter cabinets (300 to 1600 A)
Dimensional drawing 2
4 x 1600 A
Paint color: RAL 7035 (light gray, semigloss)
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Filters for power lines
B84299G
Filter cabinets (300 to 1600 A)
Dimensional drawing 2 (continued)
Inquire for modified cable inlets and outlets.
Must be ordered separately:
Connector fitting (inner diameter = 80 mm)
Cover flange for RF-tight sealing of unused connector openings
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Ordering code
B84298A0046L***
B84298M0080C001
Filters for power lines
B84299G
Filter cabinets (300 to 1600 A)
Example of RF-tight installation with connector fitting
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