GE PST1-1

Power Sensor Trip Units

GE PST1-1
  • The General Electric (GE) PST1-1 Secondary Injection Test Set is a portable unit designed to facilitate on-site testing Power Sensor Trip Devices Types PS-1, PS-1A, PS-1A-1 used on low voltage power circuit breakers Types AK-25/50/T50/75/100 and AKR-50.
  • The test set is designed to:
    • Check current pick-up.
    • Check the time current characteristics of the long time delay bands.
    • Test the Logic Unit as a separate item.
    • Test the combination of Logic Unit, Power Supply Unit, Magnetic Trip device and associated wiring while installed in a de-energized breaker.
    • Check load carrying.
    • Check time delay bands of the short time and ground fault elements.