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AMPPOMY84
March 12, 2020, 02:28 PM
Do you have find ct ratio on a neutral ct? I have done a trip/ no trip successfully. Its on a GE TSKG412.
There is no ratio on the data plate. I was getting a ratio around 30000:5 on a 1200A system.
test11
March 15, 2020, 07:48 PM
Do you have find ct ratio on a neutral ct? I have done a trip/ no trip successfully. Its on a GE TSKG412.
There is no ratio on the data plate. I was getting a ratio around 30000:5 on a 1200A system.


Its hard telling what it is. Manufacturers do all kinds of nonstandard stuff when it comes to these sensors. It could be a 1 amp secondary, 4-20mA output, etc.

I would just treat the whole thing as a ground fault system and consider neutral CT testing complete at this point. Maybe consider checking what its wired for and if it is designed for that trip unit.