Utilizing Transformers at Other than Rated Voltages
Utilizing Transformers at Other than Rated Voltages
(OP)
All,
I am looking for information on the affects of utilizing transformers at system voltage levels which differ from the rating of a transformer. For example: utilizing a 161kV/20.9kV transformer on a 161kV/22.8kV power system. What will be the consequences?
Any references, papers, etc. would be appreciated.
Thank a bunch for your help.
I am looking for information on the affects of utilizing transformers at system voltage levels which differ from the rating of a transformer. For example: utilizing a 161kV/20.9kV transformer on a 161kV/22.8kV power system. What will be the consequences?
Any references, papers, etc. would be appreciated.
Thank a bunch for your help.






RE: Utilizing Transformers at Other than Rated Voltages
RE: Utilizing Transformers at Other than Rated Voltages
RE: Utilizing Transformers at Other than Rated Voltages
RE: Utilizing Transformers at Other than Rated Voltages
RE: Utilizing Transformers at Other than Rated Voltages
RE: Utilizing Transformers at Other than Rated Voltages
The difference is about 8%. You may get close with adjustable taps.
In my little system the nominal voltage is 13,200 V. The most readily available distribution transformers are 13,800 V. (The closest large utility uses 13,800 V and that is what is usually in local stock.)
When a 13,800 V transformer ends up on our system, we get about 115V instead of 120 V. We sometimes leave it, and sometimes bump down the taps. It depends!
We avoid using different transformer voltages in three phase banks.
Bill
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"Why not the best?"
Jimmy Carter