Answer / nishant2110

Noise in transformr is caused by MAGNETOSTRICTION.

magnetostriction is process of slight changing physical size
of magnetic material when kept in varying magnetic field.

Since gap due to bad insulation and bad stacking factor give
sufficient place for core to vibrate in between due to
change in its size

we have one pumping station and 4.6 MW 7 no.s synchronous motors.so there is no required HT capacitor to improve power factor.But we have two no.s of 25 Mva power transformer connect to distribute the power for motors connect with 220 kv line.So i have required the HT capacitor to improve power factor at HT side i mean power transformer bus side.So please suggest how much HT capacitor banks required for same.

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