Transformer overexcitation protection (24) on HV side?
Transformer overexcitation protection (24) on HV side?
(OP)
a 230/115 kV power transformer, the owner sted that the 24 relay shall be provided on the HV side of the transformer tho there is +/- 10% OLTC. ABB RET670 recommends not to use the 24 on OLTC fitted side and the relay itself doesn't have an AVR flag.
I wonder how is that to operate...any clues?
I wonder how is that to operate...any clues?






RE: Transformer overexcitation protection (24) on HV side?
RE: Transformer overexcitation protection (24) on HV side?
RE: Transformer overexcitation protection (24) on HV side?
RE: Transformer overexcitation protection (24) on HV side?
RE: Transformer overexcitation protection (24) on HV side?