why 30kva ups buzzing(hamming) sound?

Question Posted / chandra

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Madhya Pradesh Electricity Board MPEB, I also Faced
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why 30kva ups buzzing(hamming) sound?..

Answer / rancho

due to corona effect

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why 30kva ups buzzing(hamming) sound?..

Answer / binod

LOSE TR.CORE
AC TO DC NO OF RIPPLE CONTENTS MORE THAN SPECIFIED VALUE
D.C TO A.C CONVERSION NO PROPER FIRING ANGLE

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