I have checked the wiring of the CT's in both breaker cubicles and will be able to verify polarities next week. We just found a set of Prints for the circuit in question, they were in a file with a different name than the actual name we use for this Substation. I will be able to check my...
to Stevenal,
the person who created the problem claims to be an "engineer" and I'm just a Relay Tech trying to make the best of a bad situation. He doesn't want to pay for a real engineer to come in and solve the problem he wants to replace the HU's with a Multilin relay that can be programmed...
I'm not an engineer so bear with me on this question.
We have 3 xfmrs in a Substation; 2 are 10,000Kva and 1 is 5000Kva. 13.8 Kv Primary/ 4160 v secondary. They can be tied together via bus tie breakers on the 4160 side. We changed the CT wiring at the 5000kva and used the Line Diff ct's for the...
