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+---- Thread: repair of power transformers (/showthread.php?tid=31922)
repair of power transformers - thameem.ms - 08-17-2017
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
source);
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 ..
repair of power transformers - rahulr88 - 08-17-2017
hi
i m a B.tech electrical and electronics engineering student.
i need a report on the the topic "repair of power transformers"
repair of power transformers - koolkam - 08-17-2017
thank you for information..but i need the information about the repair part.