The PCU1-SP Mk3 is a versatile primary current injection test system, ideal for stability and circuit breaker testing, with direct-reading CT ratio and polarity tests.

The PCU1-SP Mk3 Primary Current Injection Test System, a medium powered instrument, enables output currents of up to 5000A (11.5kVA for 40 seconds). It comprises a separate control unit that houses all metering and control functions, along with a loading unit (such as the NLU200, NLU2000, or NLU5000) responsible for delivering the high current output.

This system is perfect for primary current injection, stability testing, and circuit breaker testing, and also offers direct-reading CT ratio and polarity tests. It comes with a 100A secondary injection output and 3 loading units that provide maximum output currents of 2000A or 5000A. Each loading unit, except NLU200, has three output taps to accommodate a wide range of load impedances.