Problem with SR489 Multilin
Problem with SR489 Multilin
(OP)
Hi everybody, I'm getting a problem with one SR489 Multilin, one of its analog output sudently change signal level, This refers to MVAR, and is calibrated to:
4mA=-3.37MVAR to 20mA=3.37MVAR. At normal power factor it got 0.9MVAR but sudently it increased to maximum setting (3.37MVAR). I did changed the input analog module on PLC in order to eliminate this posibility. I see the problem is with SR489 relay. What can I do, in order to fix it? Thanks for your help.
Ealberto
4mA=-3.37MVAR to 20mA=3.37MVAR. At normal power factor it got 0.9MVAR but sudently it increased to maximum setting (3.37MVAR). I did changed the input analog module on PLC in order to eliminate this posibility. I see the problem is with SR489 relay. What can I do, in order to fix it? Thanks for your help.
Ealberto






RE: Problem with SR489 Multilin
Don't forget that the MVAR can be positive or negative.
RE: Problem with SR489 Multilin
4mA=-3.37MVAR
There's a '-' symbol there. I didn't spot it either at first read. Agree with the rest. I'll enquire whether we've had anything similar with our Multilins.
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RE: Problem with SR489 Multilin