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50A-3PH MK2 Secondary Current Injection Test Set

4.67 (3 reviews)

Accurately test protective systems with the 50A-3PH MK2 Secondary Current Injection Test Set. Versatile, user-friendly, and comprehensive protection. Enhance your testing capabilities today.

  • 0-50A three phase output
  • Clear and simple user interface
  • 3 phase current output
  • 0-50A per phase output current
  • True RMS digital metering
  • Memory ammeter
  • Multi-function timing system
  • Auxiliary metering input
  • Large back-lit liquid crystal display
  • Thermal and over-current protection
  • Compact and portable
  • 220V or 400V 3 phase mains supply options
  • 115V-440V 3 wire supply with optional supply transformer


The 50A-3PH mk2 Secondary Current Injection Test Set is an advanced testing solution designed to meet the needs of commissioning and maintenance engineers who require a versatile test set for testing protective systems. This three-phase injection test set features an intuitive user interface and a straightforward panel layout, enabling engineers to conduct efficient and precise testing.

The 50A-3PH mk2 Test Set offers a wide range of output options, allowing engineers to inject currents as low as a few mA and as high as 50A, providing the necessary flexibility for testing various protective devices. It incorporates industry-standard safety connectors for both inputs and outputs, ensuring reliable and safe operation.

This test set includes comprehensive protection mechanisms, such as overcurrent, duty cycle, and thermal trips, which actively inform engineers about any trip conditions that may arise during the testing process.

With its bright and clear back-lit display, the 50A-3PH mk2 enables engineers to accurately measure trip times, reset times, and reclose times. It supports testing of a wide range of single and three-phase secondary protection devices, including over and under current relays, IDMT relays, and earth fault relays.

When used in conjunction with a DVS3 3-phase voltage source, the 50A-3PH mk2 expands its testing capabilities to cover protection systems that require three voltages and currents, such as directional overcurrent relays, distance protection relays, phase angle relays, power transducers, and power relays.

Our partners, including AcutestAlpha ElectronicsCuthbertson LairdNorwich Instrument Services, and PASS Ltd offer the 50A-3PH mk2 Secondary Current Injection Test Set in the United Kingdom. If you are based outside of Great Britain, you can order the product through our worldwide distribution network.

50A-3PH Mk2 Operating Manual


50A-3PH Mk2 Datasheet


Additional information

Metal Case Weight

21 kg

Metal Case Dimensions

390 x 314 x 221 mm

Pelican Case Weight

24.9 kg

Pelican Case Dimensions

560 × 456 × 265 mm

Supplied Accessories

User Manual
Calibration Certificate
Spare Fuses
3 Phase Mains Lead
Output Leads
Low Current Leads
Orange lead set box for Metal Case Version

3 reviews for 50A-3PH MK2 Secondary Current Injection Test Set

  1. Samuel Wilson

    Have been using one for while, performs every time with only annual calibration required.

  2. Li Wei

    Exactly what I was looking for!

  3. Arjun Gupta

    I found the lead time a bit too long for my taste but the unit works like a charm.

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