common CT
common CT
(OP)
Can anybody tell me where can I get a typical diagram for connection of one power meter and one protection relay on one common CT set(Three phase).
The case here is originally built with one relay, now want to add a meter on the same CT set and PT set.
The case here is originally built with one relay, now want to add a meter on the same CT set and PT set.






RE: common CT
Bill
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"Why not the best?"
Jimmy Carter
RE: common CT
At the same time if you have any short circuit on the PT, you will face troubles with the existing metering and protection system and the PT may be exploded!
These are just precautions! you can do it
See attached file in the link
Regards,
Safy
RE: common CT
teke
You must check thermal stnaded of PM current input
Meas core usually sturated ..about 2In and this saturation is protected CT input of PM.