Secondary current injection testing is an electrical compliance testing method in which a strong current is inserted directly into a trip relay to test a circuit breaker. Current injection is a testing process used to test the insulation of an electrical safeguard like a circuit breaker. A power surge is sent into the device, revealing possible trip failures. Secondary injection refers to the location the test is conducted: a secondary current injection occurs right where the trip unit is located. Secondary current injection test procedure does not call for testing the wiring or current sensors in circuit breakers, but instead focuses solely on trip unit operation. Users can choose either a single phase or a 3 phase secondary injection test set depending on their application.
ATEC offers affordable secondary current injection test set rental rates for single and 3-phase secondary injection test sets from leading manufacturers like GE, Siemens, ABB and Cutler Hammer.