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Unformatted text preview: Fig. 1.2 3. The load on a d.c. 3-wire system employing a rotary balance set with 420 V between outers consists of lighting loads of 200 A on the +ve side and 317 A on the – ve side. Power loads taking 420 A are connected across outers. Calculate the load in kW on the main generators and on each of the balancer machines. Assume a loss of 2 kW in each balancer machine. Fig. 1.3 4. Fig 1 shows a 3-phase system supplied at 11kV at A. The load currents are balanced and the p.f.’s (all lagging) are with respect to supply voltage at A. The impedances shown are per phase values. Calculate the currents in various sections and the voltage at load point C. Fig. 1.4...
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- Spring '10
- Volt, Electrical resistance, Power Distribution Systems, 2 kW, 7km, 0.035 Ohm