repair of power transformers
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09-07-2010, 12:01 AM

i m a electrical and electronics engineering student.
i need a report on the the topic "repair of power transformers"
project report maker
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Posts: 119
Joined: Jul 2010
09-07-2010, 12:19 AM

These are the test doing after repair of power transformers to know reliability

¢ insulation resistance (core and structure-core);
¢ polarity, phase angle displacement and phase sequence;
¢ voltage ratio;
¢ winding ohmic resistance;
¢ windings and core insulation resistance measurements (Megger test);
¢ windings insulation power factor and capacitances;
¢ condensing bushings capacitances and power factors;
¢ no-load losses and excitation current at 90%, 100% and 110% of rated voltage (AC separate
¢ load losses with reduced current (separate AC source); and
short-circuit impedances.
In some cases, special on-site tests are also performed, namely:
¢ frequency response (FRA);
¢ infrared-scan; and
¢ acoustic emission and partial discharge location; and
¢ insulation characterization through RVM or dielectric spectrography.

i cant see any reports of repair of power transformers
but its similar topics and check it please ...
Use Search at wisely To Get Information About Project Topic and Seminar ideas with report/source code along pdf and ppt presenaion
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Joined: Jul 2010
06-08-2010, 08:44 PM

thank you for information...but i need the information about the repair part.

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