ABB REF610 CT ratio configuration problem ?

[rayas91]

Hi guys,

Do you know how we can set ct ratio in REF610 protection relays?

Thanks

 

[LMSANZ]

Have you tried with ABB software PCM600?. Usually CT ratio is included during the setup process and most of the time, password protected to modify it.

 

[JG2828]

The CT ratio is only used for metering and disturbance recorder data. It is not used for protection functions. You have to set M80 and M83, this might need to be done via the software, I'm not certain. You could try setting it from the front panel. Here are the manuals.

https://search.abb.com/library/Down...de=en&DocumentPartId=US English&Action=Launch

https://search.abb.com/library/Down...de=en&DocumentPartId=US English&Action=Launch