EBK ELECTRIC MOTOR CONTROL
10th Edition
ISBN: 9780100784598
Author: Herman
Publisher: YUZU
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Chapter 58, Problem 10SQ
Explain optoisolation.
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1. Tests of a 10 kVA, 230/2300 V single-phase transformer have yielded the following results:
Vacuum test low voltage side: current = 0.45A Po = 70WLow side short circuit test: voltage = 11.6V Pcc = 224.3WDetermine:
a. Parameters Rcc and Xcc of the equivalent circuit referring to the secondary.b. Transformer voltage regulation, if feeding a load of 4kVA, fp = 0.75 in delayc. Efficiency if the load is 7kVA, fp = 0.8 inductive
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