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                                                                                   | T&R Test Equipment | Primary Injection System | PCU1-SP/LT

   PCU1-SP Primary Current Injection
PCU1-LT System

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  Optional 750ADM-AL Lead Set



The PCU1 series are medium powered primary current injection systems offering output currents up to 5000 amps. The system consists of a separate control unit containing all the metering and control functions and a loading unit that provides the high current output. The PCU1-LT and PCU1-SP are ideally suited to primary current injection, stability testing and circuit breaker testing. In addition, the SP version offers direct-reading of CT ratio and polarity tests and a 100 Amp secondary injection output.


PCU1-SP and NLU6000

Features (PCU1-LT and PCU1-SP)
  • 5kA maximum output current.
  • Multi-function digital timing system.
  • Digital true RMS memory ammeter.
  • Solid state switching.
  • 2000A and 5000A loading units.
  • Three range outputs on loading units.
  • Rugged compact design.
  • Optional trolley mounting of system.

Additional Features (PCU1-SP)

  • Secondary injection up to 100A.
  • Auxiliary metering input.
  • Direct reading CT ratio and polarity.


PCU1-SP System Mounted
on Trolley


The control units are rated at 11.5kVA with a two second overload capability of 23kVA using pulse mode. All metering is digital and a memory facility is provided to hold the current reading when the output trips or is switched off. The current is switched by a solid state device and is automatically switched off when the device under test trips.

The PCU1 systems have a high accuracy timing system, allowing timing tests to be carried out to a resolution of 1ms. Selection for normally closed contacts is automatic, and the status of the contacts is shown on the front panel. Timing modes are available to test under and over current devices, re-closers, under and over voltage devices, current trips and circuit breakers


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