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What is the necessity of tap changing in a transformer?

February 6, 2018 by Deena

DWQA Questions › Category: Transformer › What is the necessity of tap changing in a transformer?
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Deena asked 4 years ago
1 Answers
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admin Staff answered 4 years ago

Mostly to fine tune the output of the secondary in terms of voltage.
Given that AC Mains voltages can vary over a range of +/-10% and a more accurate secondary output is needed, then taps on either the primary or secondary can be used to accomplish this.

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