ASEA RAGEA 27N Gen Neutral Undervoltage

ASEA RAGEA 27N Gen Neutral Undervoltage

I can not find up dated information on this relay. I am testing with a manta 5000. I put 60 vac 60 hz on leads 7 and 8 and the relay picks up. Then on lead 11 & 12 I put 180 Hz and bring up vac to 1.27 and a target drops and this is close to the settings ([email protected]) but that is only one target out of two. Time delay tripping is set to .3    I cant figure out how to time it. I have test handle with test leads 1 is pos dc, 7 & 8 marked Ac, leads 11 & 12 are marked 180 Hz, 15 is a trip and 18 is neg dc. With this test handle the dc remains heated up in the relay.  This relay doesn’t have fundamental overvoltage protection. It is a special order relay for our hydro generators
So if any one has an Idea how to get the second target and how to time it that would be very helpful.

Phil

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