Overexcatation Trip at first energizing Transformer...7UT613
Overexcatation Trip at first energizing Transformer...7UT613
(OP)
Friends ,
We re energizing MV Side with 15 KV /6,9 KV Auxiliary Transformer from 132 kV/15 KV Switchyard .But during the energizing, UAT Relay is trippinng from Overexcatation Protction.
I do not know why.Engineering side is sure about settings.
Transformer Nominal working Tap "14", It s trip at tap 14,but at the "9" tap no trip.
Can you help me please,
Relay is "7UT613"
We re energizing MV Side with 15 KV /6,9 KV Auxiliary Transformer from 132 kV/15 KV Switchyard .But during the energizing, UAT Relay is trippinng from Overexcatation Protction.
I do not know why.Engineering side is sure about settings.
Transformer Nominal working Tap "14", It s trip at tap 14,but at the "9" tap no trip.
Can you help me please,
Relay is "7UT613"






RE: Overexcatation Trip at first energizing Transformer...7UT613
RE: Overexcatation Trip at first energizing Transformer...7UT613
COMTRADE would be very useful as well (to see the voltage signal, which stage has tripped U/f> or U/f>>, tripping time etc.).
RE: Overexcatation Trip at first energizing Transformer...7UT613
I fixed problem today..Actually it s my fault.
You know there s primary and secondary side of transformer.15/6,9 kv ....Normally the relay gets voltage information on 15 kv side...But i choosed 6,9 side ...so V/Hz seems %214-217....V/F seems 2,14-2,17...I changed it and everythgn ok now...
Thank you again ..and sorry for my english...
RE: Overexcatation Trip at first energizing Transformer...7UT613
Bill
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"Why not the best?"
Jimmy Carter
RE: Overexcatation Trip at first energizing Transformer...7UT613