Transformer Relays with Breaker Faluire protection
Transformer Relays with Breaker Faluire protection
(OP)
I know relays like the SEL487E provide integral breaker failure protection; but what other differential SEL relays do the same or can do the same? I am being told that while the economical SEL587 does not have a dedicated BF function, it can be imitated by programming a latch and timer while turning OUT103 into a BF initiate contact. Similar can be done with the SEL387A, and in this case I would not have to loose a dedicated differential lockout like with the 587.






RE: Transformer Relays with Breaker Faluire protection
RE: Transformer Relays with Breaker Faluire protection
RE: Transformer Relays with Breaker Faluire protection
RE: Transformer Relays with Breaker Faluire protection
RE: Transformer Relays with Breaker Faluire protection
SVnPU = 10 (or what ever value you want for your BF timer.
OUTnnn = SVnT.
RE: Transformer Relays with Breaker Faluire protection
And this can be set on each individual breaker?
RE: Transformer Relays with Breaker Faluire protection
RE: Transformer Relays with Breaker Faluire protection
RE: Transformer Relays with Breaker Faluire protection
RE: Transformer Relays with Breaker Faluire protection