Summary:
The E1 Suitcase is a portable test system used to satisfy the MIL STD 188-125 requirement for E1 short-pulse direct current injection up to 1 kA. The E1 suitcase may be used with an included inductive coupler or a direct injection output adapter. The E1 suitcase is operated using a handheld fiber-optic remote control and includes a calibration fixture which uses a current transformer with NIST traceable components.
The Military Standard (MIL-STD) 188-125 establishes minimum requirements and design objectives for high-altitude electromagnetic pulse (HEMP) hardening of fixed1 ground-based facilities that perform critical, time-urgent command, control, communications, computer, and intelligence (C4I) missions.
Refer to the latest published standard for any information regarding the MIL-STD-188-125. Safe operating principles for high voltage and high current should be followed at all times when using the E1 suitcase. Operators must abide by the authority having jurisdiction at the end-user facility.
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- Inductive coupler
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- Direct current injection adapter
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- Dry air fill whip
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- Inductive coupler and calibration fixture
(A) test fixture with current transformer diagnostic, (B) direct connection output adapter, (C) inductive coupler, (D) ground strap, (E) fiber optic remote control, and (F) the 188-125 portable test system.
General Specifications of 188-125 suitcase
| SPECIFICATION | VALUE |
|---|---|
| Size | 24.6 x 19.7 x 8.6 in (62.5 x 50.0 x 21.8 cm) |
| Weight | 90 lbs (40.9 kg) |
| Requirements: | Pressurized dry breathing air (SCUBA CGA grade-E air) for bottle refill Mains power to recharge internal battery ( 108-250 VAC, 47-63 Hz) |
| Peak output current | 1.1 kAmp* |
| Peak output voltage (open circuit) | 46 kV |
*for direct injection
Electrical characteristics of the 188-125 portable test system
| Symbol | Parameter | Value | Units |
|---|---|---|---|
| N | Number of Marx generator stages | 2 | – |
| VE | Maximum Erected voltage | 46 | kV |
| Vch | Marx charge voltage | 23 | kV |
| Imax | Peak pulsed current direct drive at maximum charge voltage | 1.1 | kA |
| Cstage | Capacitance per Marx stage | 20 | nF |
| CE | Erected capacitance | 10 | nF |
| Epulse | Maximum Marx energy per pulse | 10.5 | J |
| – | Pressure switch close pressure (at output of bottle regulator) | 29 | PSI |
| – | Pressure switch open pressure | 10 | PSI |
| PMarx | Maximum Marx Generator Pressure | 75 +/- 2 | PSI |
| Pblow Marx | Initial vent pressure of the Marx blowout switch | 20 | PSI |
| Pblow regulator | Initial vent pressure of the Panel Regulator Blowout switch | 85 | PSI |