MIL-STD-188-125-1A Hemp Filter Range
This range of filters is the latest in high-altitude electromagnetic protection (HEMP) for power lines. MPE have designed these filter circuits from the ground up in order to be compliant with the stringent E1 and E2 pulse current injection and shielding effectiveness requirements of the latest United States MIL-STD-188-125-1A protection standard. These high performance filters also protect equipment from the effects of intentional electromagnetic interference (IEMI).
All lines are individually filtered and feature inductive input to offer both good continuous wave electromagnetic compatibility (EMC) performance and superior transient handling performance even on supplies with low source impedance. All lines are fitted with high-energy transient suppressors.
Insertion Loss Performance
Asymmetric attenuation shown as measured in 50Ω system with or without load, in accordance with MIL-STD-220C, CISPR-17 and BS EN 55017.
Typical Applications
- Fixed ground-based C4I military facilities
- New build & upgrade facilities requiring HEMP protection to MIL-STD-188-125-1A
| Rated Current (A) | Part Number | DC Resistance (mΩ) | Max. Earth Leakage* (A) | Residual Current [2.5kA] (A) | Length A (mm) | Width B (mm) | Height C (mm) | Terminal Size |
|---|---|---|---|---|---|---|---|---|
| 32 | HPS32-1 | 10 | 1.8 | 5.3 | 430 | 180 | 165 | M8 |
| 63 | HPS63-1 | 5 | 1.8 | 4.6 | 680 | 270 | 215 | M8 |
| 100 | HPS100-1 | 2 | 6.3 | 5.9 | 680 | 270 | 215 | M8 |
| 200 | HPS200-1 | 1 | 12.5 | 6.2 | 940 | 270 | 215 | M12 |
| 250 | HPS250-1 | 0.5 | 15 | 5.6 | 1250 | 270 | 215 | M16 |
| 400 | HPS400-1 | 0.5 | 15 | 4.4 | 1250 | 270 | 215 | M20 |
| 800 | HPS800-1 | 0.1 | 26 | 4.4 | 1600 | 310 | 320 | 50×8 busbar |
| 1200 | HPS1200-1 | 0.1 | 26 | 4.4 | 1600 | 310 | 320 | 80×10 busbar |
| Rated Current (A) | Part No. | A | B | C | D | E | F |
|---|---|---|---|---|---|---|---|
| 32 | HPS32-2 | 395 | 755 | 165 | 430 | 180 | 160 |
| 63 | HPS63-2 | 590 | 1125 | 215 | 680 | 270 | 220 |
| 100 | HPS100-2 | 590 | 1125 | 215 | 680 | 270 | 220 |
| 200 | HPS200-2 | 590 | 1385 | 215 | 940 | 270 | 220 |
| 250 | HPS250-2 | 590 | 1855 | 215 | 1250 | 270 | 300 |
| 400 | HPS400-2 | 590 | 1855 | 215 | 1250 | 270 | 300 |
| 800 | HPS800-2 | 680 | 2805 | 320 | 1600 | 310 | 600 |
| 1200 | HPS1200-2 | 680 | 2805 | 320 | 1600 | 310 | 600 |
| Rated Current (A) | Part No. | A | B | C | D | E | F |
|---|---|---|---|---|---|---|---|
| 32 | HPS32-3 | 610 | 755 | 165 | 430 | 180 | 160 |
| 63 | HPS63-3 | 810 | 1125 | 215 | 680 | 270 | 220 |
| 100 | HPS100-3 | 810 | 1125 | 215 | 680 | 270 | 220 |
| 200 | HPS200-3 | 810 | 1385 | 215 | 940 | 270 | 220 |
| 250 | HPS250-3 | 810 | 1855 | 215 | 1250 | 270 | 300 |
| 400 | HPS400-3 | 810 | 1855 | 215 | 1250 | 270 | 300 |
| 800 | HPS800-3 | 1050 | 2805 | 320 | 1600 | 310 | 600 |
| 1200 | HPS1200-3 | 1050 | 2805 | 320 | 1600 | 310 | 600 |
| Rated Current (A) | Part No. | A | B | C | D | E | F |
|---|---|---|---|---|---|---|---|
| 32 | HPS32-4 | 825 | 755 | 165 | 430 | 180 | 160 |
| 63 | HPS63-4 | 1230 | 1125 | 215 | 680 | 270 | 220 |
| 100 | HPS100-4 | 1230 | 1125 | 215 | 680 | 270 | 220 |
| 200 | HPS200-4 | 1230 | 1385 | 215 | 940 | 270 | 220 |
| 250 | HPS250-4 | 1230 | 1855 | 215 | 1250 | 270 | 300 |
| 400 | HPS400-4 | 1230 | 1855 | 215 | 1250 | 270 | 300 |
| 800 | HPS800-4 | 1420 | 2805 | 320 | 1600 | 310 | 600 |
| 1200 | HPS1200-4 | 1420 | 2805 | 320 | 1600 | 310 | 600 |
| Frequency | 10kHz | 100kHz | 1MHz | 10MHz | 100MHz | 1GHz |
|---|---|---|---|---|---|---|
| Minimum Shielding Effectiveness to meet MIL-STD-188-125-1A | 20dB | 40dB | 60dB | 80dB | 80dB | 80dB |
| Typical Filter Shielding Effectiveness | 30dB | 50dB | 75dB | 100dB | 100dB | 100dB |
Ordering Code
HPS32-2X277
- Select the Filter Prefix HPS
- Select 2, 3 or 4 digits to reflect the current rating required
- Select 1X, 2X 3X or 4X to reflect the number of lines required
- Select either 120, 250 or 277 for voltage rating required