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Verify Protective Relay Systems with the Eaton Cutler Hammer 140D481G03

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As a main piece of electrical test equipment used to check circuit breaker and protective relay systems, secondary injection test sets differs from the standard primary injection test sets in that in their method there is no primary current flowing and contacts remain closed during the testing process.

A trip unit measures the amount of current and calculates its effect on the system against its settings, and will trip or open the breaker as required.  The larger the current measured, the quicker the breaker should trip or open.

By connecting a secondary injection test set one can ensure that the trip unit, its settings or factory parameters, and associated components are working properly.

Eaton-Cutler-Hammer-140D481G03The Eaton Cutler Hammer 140D481G03 Secondary Injection Test Set is used to test and verify the pickup levels and time delay settings of a breaker’s trip unit. The Eaton Cutler Hammer 140D481G03 is also used to test Amptector, Digitrip, RMS or Optim trip units. 

By passing enough current to check any desired calibration point, the 40D481G03 allows the solid-state trip unit operation to be checked without using primary current. The breaker must be de-energized before checking the operation of the solid-state trip units. If the Eaton Cutler Hammer 140D481G03 shows that the solid-state trip unit is not functioning properly, the trip unit should be replaced.

Available for rent, lease, or purchase from Protec Equipment Resources.  We are here to help you with your testing equipment needs.

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