Three similar coils connected in star, take a total power of 1.5 kW at a pf of 0.2 lagging from a three phase, 440 V, 50 Hz supply. Calculate the resistance and inductance of each coil.

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written 9.4 years ago by

teamques10 ★ 70k

• modified 5.6 years ago

basic electrical engineering

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written 9.4 years ago by

teamques10 ★ 70k

Given:

$p= 1.5 kW \\ Pf = 0.2 (lagging) \\ VL = 440 V \\ F = 50 Hz \\ \text{For a star connected load} \\ Vph = VL / \sqrt3 = 440/ \sqrt3= 254.03 V \\ P= \sqrt3 * VLIL \cos ф \\ 1.5 * 103 = \sqrt3 * …

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