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The capacitance of a 3 core lead sheathed cable measured between any two of the conductors with sheath earthed is 0.19 µF per km. The kvA required to keep 16 kms of the cable charged when connected to 20 k V, 50 Hz supply will be ______kVA
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- 763 kVA.
- 7.63 kVA.
- 76.3 kVA.
- 0.763 kVA.
Correct Option: A
The capacitance measured is 3.04 µF between the conductors.
Capacitance per phase = 2 × 3.04 = 6.08 µF.
3 phase MVA required = V²ωC
= (20)² × (2π × 50) × 6.08 × 10–6 = 0.763 MVA
= 763 kVA.
