Electrical Test Instruments PI-2500-G2 and PI-5000-G2
Section V - Service Information and Documentation
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Page IV-16
Instantaneous Trip Time Test
1.
Perform Instantaneous Pickup Test as outlined above.
2.
Adjust controls to obtain current above pickup, at approximate desired
multiple of rating.
3.
Close breaker under test.
4.
Press the INITIATE button. Breaker should trip instantaneously.
5.
Read and record timer and ammeter readings as instantaneous trip time
and current.
6.
Repeat the above test for the other poles of the circuit breaker.
7.
Shut down test set, disconnect breaker, and prepare for subsequent test-
ing or relocation according to steps 18 through 22 in pre-test installation
and setup outlined above.
