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A range of HEMP protection filters for telephone lines for use on HEMP protected installations meeting E1 (short pulse) pci requirements of MIL-STD -188-125-1 & -2. All lines are individually filtered and feature inductive input to offer both good continuous wave EMC performance and superior transient handling performance. All lines feature high-energy varistor transient suppressors at the input end.
All MPE HEMP filters are tested using the test methods defined within the following standards and meet or exceed the relevant performance and/or safety criteria defined within these standards:
Mil-Std-188-125
Mil-F-15733
Mil-Std-220C
CISPR17:2011/BS EN 55017:2011
UL1283
LVD 2014/35/EU
Typical insertion loss In 50Ω system with / without load | ||||||
---|---|---|---|---|---|---|
Frequency | 10kHz | 100kHz | 1MHz | 10MHz | 100MHz | 1GHz |
Insertion loss (50Ω) | 70dB | 100dB | 100dB | 100dB | 100dB | 100dB |
100dB insertion loss performance | 100dB from 20kHz – >1GHz | |||||
Pass Band (300Ω) | 0 – 4kHz |
MIL STD 188-125-1 acceptance test, short pulse current injection, wave shape 20/500ns | |||||
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Input pulse amplitude | 250A | 500A | 1000A | 1800A | 2500A |
MIL-STD-188-125 residual requirement | <0.1A | <0.1A | <0.1A | <0.1A | <0.1A |
Typical filter residual let-through | <0.06A | <0.06A | <0.06A | <0.06A | <0.06A |
Part Number | No of Lines | Major Dimensions (mm) | Weight Approx (kg) | ||
Length | Width | Depth | |||
DS33570 | 2 | 300 | 90 | 45 | 2 |
DS33571 | 4 | 300 | 175 | 45 | 4 |
DS33572 | 8 | 300 | 340 | 45 | 8 |
DS33573 | 32 | 547 | 200 | 143 | 17 |
DS33575 | 100 | 730 | 600 | 250 | 60 |
* Note: Lines are supplied as matched pairs, hence 1 telephone circuit = 1 matched pair = 2 lines
No Of Lines | Dimensions (mm) | |||
---|---|---|---|---|
A | B | C | D | |
2 | 90 | 46 | 22 | 45 |
4 | 175 | 100 | 37.5 | 87.5 |
8 | 340 | 250 | 45 | 170 |
Part Number | No of Lines | Major Dimensions (mm) | Weight Approx (kg) | ||
Length | Width | Depth | |||
DS33890 | 2 | 345 | 100 | 75 | 3.5 |
DS33891 | 4 | 345 | 185 | 75 | 6 |
DS33892 | 8 | 345 | 350 | 75 | 12 |
DS33582 | 16 | 420 | 340 | 75 | 17 |
DS33893 | 40 | 730 | 620 | 250 | 40 |
DS33894 | 60 | 730 | 620 | 250 | 58 |
DS33575 | 100 | 730 | 1000 | 250 | 90 |
No Of Lines | Dimensions (mm) | |||
---|---|---|---|---|
A | B | C | D | |
2 | 100 | 50 | 25 | 50 |
4 | 185 | 135 | 25 | 92.5 |
8 | 350 | 250 | 50 | 175 |