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A three phase 50 Hz line consists of three conductors each of diameter 21 mm. The spacing between the conductors as follows: A – B = 3m, B – C = 5m, C – A = 3.6 m
If the line operates at 132 kV, the reactive voltampere generatd by the line per km is _______kVAr
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- 51703 VAr.
- 5.1703 VAr.
- 517.03 VAr.
- 5170.3 VAr.
Correct Option: A
| Cn = | = | = 9.43 × 10-9 F/km | ||||||||||||||
| In |  |  | 18 × 109 × In | | | 1/3 | ||||||||||
| Xc = | = | = 0.337 × 106 Ω/km | ||
| 2πƒCn | 2π × 50 × 9.49 × 10-3 |
Reactive volt ampere generated by the line
| = | = | = 51703 VAr. | ||
| Xc | 0.336 × 106 |
= 51703 VAr.
