Filters for Power Lines (Low Leakage Current)
40 and 100 A, 100 dB from 150 kHz
Filter für Netzleitungen (ableitstromarme Schaltung)
Two- and four-line filters
40 and 100 A
Single-stage
Stopband attenuation up to 40 GHz
Features
B84261
s
Low volume and low voltage drop
s
Practically no leakage current flow on the grounding conductor in normal operation because of
the capacitor configuration (capacitive circuit to ground only through neutral)
s
Insertion loss to CISPR 17
Design
The electrical components are incorporated in an RF-tight case of high-grade steel. The cables
enter through glands. The RF-tight termination of the openings is produced by specially shaped lids.
The conductors and equipment grounding conductor are connected by threaded bolts. The space
around the fixing holes is left as bare metal (unpainted) to ensure good RF contact with metal
surfaces (chassis, ground).
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 (diameter min.
10 mm
2
) 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.
Installation
Filters are supplied complete with all parts required for RF-tight installation (fixing screws, flanges,
RF gaskets, cable glands) and installation instructions.
No welding is needed on the shielding wall, so any subsequent installation is quite simple. And the
uniform template of the attachment points allows straightforward replacement of a two-line filter by
a four-line filter for example.
Accessories and special versions
RF-tight flexible connector fittings in widths of 25 and 40 mm are available for installation spaced
away from the shielding wall.
Filters with an EMP protection add-on for surge currents up to 100 kA per line are available on
request.
To match requirements, filters can be supplied with different kinds of EMC or shielding cable glands.
Tests
All filters are 100% tested and the results are archived under a filter's serial number. If required, a
test report can be generated for the serial number.
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Filters for Power Lines (Low Leakage Current)
40 and 100 A, 100 dB from 150 kHz
Circuit diagrams
Two-line filters
Input end
B84261
L
L
Shielded end
L1
L2
Shielded end
L3
N
N
N
SSB1711-9-E
Four-line filters
L1
L2
Input end
L3
N
SSB1712-H-E
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Filters for Power Lines (Low Leakage Current)
40 and 100 A, 100 dB from 150 kHz
Insertion loss
α
e
(typical values at Z = 50
Ω
)
120
dB
B84261
SSB1710-1-E
Measurement circuit
50
Ω
Measurement limit
α
e
Filter
V
2
100
up to 40 GHz
V
0
~
~
50
Ω
80
60
α
e
= 20 lg
.
[dB]
2
V
2
V
0
SSB1693-7-E
40
20
0
4
10
10
5
10
6
10
7
10
8
Hz 10
9
f
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12/01
Filters for Power Lines (Low Leakage Current)
40 and 100 A, 100 dB from 150 kHz
General technical data
Rated voltage
V
R
for two-line filters
Rated voltage
V
R
for four-line filters
Rated current
I
R
Max. admissible overcurrent
I
over
250 V
440 V
250 V
see characteristics
75
.
I
R
10
.
I
R
2
.
I
R
1,4
.
I
R
B84261
line/line
line/case
line/line
line/case
referred to + 40°C ambient temperature
for 50 ms
for 1 s
for 1 min
for 15 min
line/line
line/case
of
V
R
at 50 Hz and
I
R
per line
at
I
R
difference potential N to PE at 50 Hz
(
−
25
°
C/+85 °C/56 days damp heat test)
to EN 60068-1
cable glands at both ends
or flexible connector fitting
direct connection to shielding wall
Rated frequency
f
R
Test voltages
V
T
Voltage drop/phase
∆
V
DC resistance
R
max
Power dissipation
P
D
Leakage current
I
leak
Climatic category
Mechanical version
50/60 Hz
1200 Vdc, 2 s
1200 Vdc, 2 s
< 1%
see characteristics
see characteristics
see characteristics
25/085/56
C
D
Characteristics and ordering codes
I
R
A
Mecha-
nical
version
R
max
m
Ω
P
D
W
I
leak
mA/V
Dim.
draw-
ing
Approx.
weight
kg
Ordering code
Two-line filters
2
×
40
2
×
40
4
×
40
4
×
100
4
×
100
C
D
< 5
< 5
< 16
< 16
<1
<1
1
2
9
9
B84261-C23-B11
B84261-D23-B11
Four-line filters
C
C
D
< 10
< 4
< 4
< 50
< 120
< 120
< 1,5
< 1,5
< 1,5
3
4
5
28
75
75
B84261-C23-E11
B84261-C25-E11
B84261-D25-E11
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12/01
Filters for Power Lines (Low Leakage Current)
40 and 100 A, 100 dB from 150 kHz
Dimensional drawing 1
B84261-C23-B11
590
B84261
1
<106
2
174
SSB1715-7
1
2
Input end:
Shielded end:
Cable gland PG 21
Cable gland PG 21 or connector fitting, width 25 mm,
ordering code B84298-A42-L*** (must be ordered separately)
Fixing dimensions
248
1)
∅10
380
(168)
∅37+0,5
1)
158
55+5 (bare metal)
SSB1716-F-E
1) If connector fitting with 25 mm width is used (must be ordered separately, ordering code B84298-A42-L12)
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12/01
Analogue and Mixed Signal
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