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200A-3PH/E/ED 3-Phase Current Injection

Supplier: Maceys Electrical

Product Features


  • 0-200A 3 phase output.
  • Accurate true RMS digital metering (200A-3PH/ED).
  • Accurate true RMS analogue metering (200A-3PH/E).
  • All outputs fully isolated.
  • Multi-function 1ms resolution timing system.
  • Auxiliary AC output.
  • Electronic over-current protection (ED only).
  • Compact and portable.

Product Description

T&R Test Equipment is a market leader in the field of current injection equipment. The range includes single phase units with 100A-6000A output capability and three phase systems up to 200A. All have true RMS metering, a flexible timing system, and an easy to understand user interface.

The 200A-3PH test system provides commissioning and maintenance engineers with a compact, portable and flexible system for the testing and timing of protective relays, circuit breakers and thermal overloads. The unit is equally at home testing solid state or electro-magnetic relays, and has a rating suitable for testing thermal trips.

Two versions of the unit are available: the 200A-3PH/E with analogue metering, and the 200A-3PH/ED with digital metering. In both cases the meters read true RMS and have independently selectable ranges for each channel.

The outputs are isolated and independently variable, and allow the injection of currents up to 200A. The outputs on the digitally metered version are protected by electronic over-current trips and fuses, whereas the analogue unit has fuse protection only.

The timing system on the 200A-3PH is flexible and exceptionally easy to use, allowing trip times to be measured to a high degree of accuracy. Units with auxiliary contacts may be timed using the 'NC' or 'NO' timer modes, and devices with no auxiliary contacts may be timed using the current operated mode. The unit is ideal for testing the following devices:

  • Over and under current relays.
  • IDMT relays.
  • Thermal overloads.
  • Magnetic circuit breakers.

The units may also be used in conjunction with the DVS3 digital voltage source to test protection systems requiring three voltages and three currents. Protection that may be tested in conjunction with the DVS3 includes:

  • Directional relays.
  • Distance protection.
  • Power relays and transducers.