Back Enegize of Transformer
Back Enegize of Transformer
(OP)
Can we enegize a 240MVA 275/132kV step up transformer under no load condition by using the 132kV source due to 275kV incoming line is not ready.
The 240MVA transformer will put under "soak" condition.
BTW, can we use a step up transformer as a step down transformer?
Thanks.
The 240MVA transformer will put under "soak" condition.
BTW, can we use a step up transformer as a step down transformer?
Thanks.






RE: Back Enegize of Transformer
RE: Back Enegize of Transformer
Why not?
It's normal operation condition.
In additional please see.
thread238-192000: No load condition of energized tranformwer
Best Regards.
Slava
RE: Back Enegize of Transformer
If you have a differential scheme - quite likely on a transformer that size - make sure it can trip the LV breaker. Often it trips the HV side which then inter-trips the LV side. A soak test is definitely one of those times when you want the diff scheme (or REF on a star winding) operational as it operates quickly and will minimise damage from a fault.
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RE: Back Enegize of Transformer
In additional. I think we have good discussion about inrush currents in case of LV or HV energazing, but forgot when.
Sky72, cuky2000 are right, ask trf, manuf
Regards.
Slava
RE: Back Enegize of Transformer
-TurbineGen
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If it is broken, fix it. If it isn't broken, I'll soon fix that.