Home » EMI EMC » E1 5 kA System

MIL-STD 188-125


Part Number: 188-E1-5K

The E1 5 kA system satisfies the MIL-STD 188-125 requirement for E1 short-pulse direct-current injection up to 5 kA. It is a dual-use system for an MOV coupler or a direct injection output coupler. Operated either locally or remotely using high-voltage power and a control rack, the E1 5 kA includes a calibration fixture that uses a current transformer with traceable components from the U.S. Department of Commerce’s National Institute of Standards and Technology (NIST).

The system comes with a complete power and control system, which includes a high-voltage power supply, trigger unit, 2-channel gas control panel, and control. The system may be locally controlled, via the front panel of the power and control rack, or remotely via computer.

The control and data acquisition option for this system allows the user to enter a desired output current and have the software calculate and set the required charge voltage and air pressure for the Marx and peaking circuits. The data acquisition portion of the software automatically acquires the injected and residual current waveforms from the oscilloscope, scales them based upon calibration factors and attenuation, and displays them along with peak current, rise-time, and FWHM. A separate control in the software allows the user to automatically generate a test report at the push of a button.


  • Dual-use system for an MOV coupler or a direct injection output coupler
  • Calibration fixture uses a current transformer with traceable components from NIST
  • Controlled locally or remotely
  • Peak output current: 5 kA
  • Pulse rise-time: <20 ns
  • Pulse-width (FWHM): 500 – 550 ns
  • Size: 39” X 27.5” X 23”
  • Weight: 250 lb dry, 450 lb with oil


The following items are included with the E1 5 kA system:

  • 188 – 125 E1 portable test system
  • Test fixture with current transformer diagnostic
  • Direct connection output adapter
  • Fiber-optic remote control
Parameter Description Value Unit
Ve Erected voltage 300 kV
Ce Erected capacitance 15 nF
Vch Operating charge voltage range 8 – 40 kV
Pres. Operating pressure range atm – 150 psi
L Length 42 in
W Width 27.5 in
H Height 29.5 in
Wt Weight 400 lbs
TR Current rise time <20 ns
TW Pulse width, Full Width Half Maximum (FWHM) 500-550 ns


Refer to the latest published standard on MIL-STD 188-125 for further information. Safe operating principles for high voltage and high current must be used at all times when using the E1 suitcase. Operators must abide by the authority having jurisdiction at the end-user facility.


APELC’s selection of add-on features for high-voltage components are designed to increase safety and usability.


Rugged high-voltage quick disconnect cable connectors for voltages up to 700 kV.


Integrated high-speed current diagnostics in high-voltage quick disconnects.


Software to increase user safety and reduce time spent in testing.


Termination and monitoring capability for a high-voltage, high-power pulse without radiating equipment.


Providing the trigger pulse to a Marx Generator through a pulse forming circuit.


Fully integrated power and control units to deliver a turnkey package for our pulsed power systems.


For more information or to discuss a custom or turnkey system, complete the form below and we will contact you within 24 hours.

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