Guest
Hi everyone
On a newly buildt substation, on the 380V side, faultlevel of almost 32kA, I've noticed something. The CT's been use there is 3200/1, but it is metering CT's. When I asked one of the guys if it is correct, (in my opinion it must be 10P10 protection CT's, otherwise the CT's would saturate under a big fault) he told me that the relay been used is an electronic relay with a very low burden. So in fact is there nothing wrong with metering CT's! Is this statement true?
regards
On a newly buildt substation, on the 380V side, faultlevel of almost 32kA, I've noticed something. The CT's been use there is 3200/1, but it is metering CT's. When I asked one of the guys if it is correct, (in my opinion it must be 10P10 protection CT's, otherwise the CT's would saturate under a big fault) he told me that the relay been used is an electronic relay with a very low burden. So in fact is there nothing wrong with metering CT's! Is this statement true?
regards