Testing GE Versa Trip with Ground Fault
Testing GE Versa Trip with Ground Fault
(OP)
Does anyone have the procedure for high current testing a GE Versa Trip overcurrent trip device when equipped with 4-wire ground fault (external neutral CT)? A copy of the instruction manual would be even better. By the way, this is not a MicroVersatrip or RMS-9 MicroVersaTrip, this is the "original" Versa Trip mounted on a molded case circuit breaker. A picture is attached.






RE: Testing GE Versa Trip with Ground Fault
RE: Testing GE Versa Trip with Ground Fault
High current tests for phase overcurrent pickup, time and instantaneous by pushing current in A phase out B&C, in B out A&C, and in C out A&B.
Or connect the neutral CT and do single phase tests with the CT in the test current loop.
Test GF pickup and timing by pushing current only through one pole of the breaker, not the neutral CT. Also push current through just the neutral CT and verify pickup.
After installation, verify correct neutral CT polarity and that the neutral is not grounded or bonded downstream of sensor, and is bonded upstream.
I don't recall any jumper or defeat on the GF function or if you can just leave the setting pin out to inhibit ground fault, but it's been 24 years since I did one.
RE: Testing GE Versa Trip with Ground Fault
Do you happen to know the secondary current for the Versa Trip CT? I was thinking that I could use a secondary current injector to test the neutral pickup instead of having to remove the neutral CT's from the gear.
RE: Testing GE Versa Trip with Ground Fault
Otherwise use rcwilsons procedure.
Little side note, I can't recall the last one of those that actually passed testing, we just retrofit those with a more modern trip unit.
RE: Testing GE Versa Trip with Ground Fault
I don't recall the exact outcome of our experiment but there are vague memories of something going wrong or getting broken: plug-in terminals got damaged, over-voltage damage to the circuit board or ???
Based on my memory, I probably shouldn't even post this!
RE: Testing GE Versa Trip with Ground Fault
PLEASE confirm this information as I suffer from C.R.S these days.
RE: Testing GE Versa Trip with Ground Fault
I posted the wrong old GE wooden box :)
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RE: Testing GE Versa Trip with Ground Fault
RE: Testing GE Versa Trip with Ground Fault
RE: Testing GE Versa Trip with Ground Fault
We normally use primary injection also and use bus bar adaptors to connect the breakers to the test set stabs. We have often used the method dpmac suggested for testing ground fault equipped breakers but it is time consuming to switch the bus bars for the various tests. For this reason we like to use a secondary injection set for ground fault testing or ground fault defeat when available.