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sep relays

sep relays

sep relays

(OP)
Hi everyone,

I have tested some generator protection relays branded SEP at a
power plant.
I have a problem with U< function, it is blocked in system de-energized condition. I couldnt test U< function, I cannot find
any documentation about these brand ?
Do you now any about it or the website of brand?  

RE: sep relays

Don't know about the SEP brand, but perhaps it is blocked by breaker status contact.  Have you tried to simulated CB 52a/b to test function?

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