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power transformer erection

power transformer erection

power transformer erection

(OP)
I need informtion regarding the time and sequency for power transformer, 150 MVA 220 kV, energizing. I read about keeping the transformer about 72 hours no load before energizing. Is there some standards about this subject?  

RE: power transformer erection

The manufacturer will have an instruction manual.  See ABB for an example.

RE: power transformer erection

See IEEE C57.93 Table 5.

RE: power transformer erection

The recommendation per my most recent Hyundai 230 kV purchase is 24 hours at no load, plus at least 36 from breaking vacuum to energizing. Additional time is needed in very cold conditions.

RE: power transformer erection

Guess I could read Table 5: For your voltage class 12 hours minimum, 24 recommended.
 

RE: power transformer erection

(OP)
Are you so kind to give me table 5? I'll apreciate your answer. Thanks.  

RE: power transformer erection

(OP)
Are you so kind to give me the table 5?
I'll appreciate your kindness. Thank you.

RE: power transformer erection

(OP)
Are you so kind to give me the table 5?
Thank you.

RE: power transformer erection

(OP)
Sorry for writing three times but my intenet is not working properly.

RE: power transformer erection

The standard is copyrighted, but see above for the relevant info.  

RE: power transformer erection

(OP)
Thank you. I know that the standards are copyrighted but I have only ANSI C57.93-1995 and the table 5, that you mentioned, is missing. Maybe you reffer to C57.93-2007. This is the reason for asking you to give me only the table 5.
Are you so kind to help me giving only table 5?  

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