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+1 vote
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in Physics by (59.7k points)

A 3-core, 3-phase belted cable tested for capacitance between a pair of cores on single phase with the third core earthed, gave a capacitance of 0.4 mF per km. Calculate the charging current for 1.5 km length of this cable when connected to 22 kV, 3-phase, 50-Hz supply.

1 Answer

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by (56.9k points)
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Best answer

CL = 0.4 µF, VL = 22,000 V, ω = 314 rad/s

Charging current for 15 km = 3.2 × 15 = 48 A

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