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KV30-100 MK3 Test System

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  • 0-30kV output voltage
  • 3kVA output capability
  • Key operated supply switch to prevent unauthorised operation
  • Dual overload protection
  • Variable electronic trip – 10-110% of rated output
  • Voltage and current metering
  • External interlock circuit
  • Zero-volt interlock
  • Visual indication of test piece failure


The KV30-100 MK3 Test System serves as a robust high power, high voltage AC test system specifically designed for insulation testing. It excels in both development and routine testing of electrical insulation systems and plant. This comprehensive system comprises a control unit and a separate oil-filled high voltage transformer connected by 5-meter supply and control cables.

The control unit is equipped with an extensive range of features for control, metering, and protection. Large linear analogue instruments display the output voltage and current accurately, ensuring easy readability. It includes a variable electronic trip that enables precise adjustment of the trip current within the 10% to 110% range of the rated output.

The high voltage transformer, housed in an oil-filled steel tank with swivel castors for mobility, plays a crucial role in the system. It utilizes a high voltage bushing for the HV output, while the other end of the HV winding remains earthed. The system incorporates variable electronic trips that monitor the output current to protect against potential issues, along with a fixed over-current trip on the primary side of the output transformer. The variable trip allows for adjustment in 10% increments between 10% and 110% of the rated output current. Fuses provide protection for the input and control supplies.

The KV30-100 MK3 Test System accommodates various types of test objects, including capacitive, resistive, or inductive ones. For higher voltage or output power requirements, we recommend exploring our KV50-200 Mk2 and KV100-100 Mk2 models, which offer 10kVA high voltage systems.

Our partners, such as AcutestAlpha ElectronicsCuthbertson LairdNorwich Instrument Services, and PASS Ltd offer the KV30-100 Mk3 in the United Kingdom. Additionally, if you are located outside Great Britain, you can conveniently order the product through our worldwide distribution network.

KV30-100 Mk3 Operating Manual


KV30-100 Mk3 Datasheet


Additional information

Control Unit Weight

25 kg

Control Unit Dimensions

370 × 480 × 290 mm

Transformer Weight

210 kg

Transformer Dimensions

480 × 520 × 570 mm

Supplied Accessories

Supply lead
Spare fuse set
Calibration certificate
Operating manual
Earth lead


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