Example 37.35. An 11-kV, 1000-kVA, 3-phase, Y-connected alternator has a resistance of 22 per phase. The open-circuit and full-load zero power factor characteristics are given below. Find the voltage o: regulation of the alternator for full load eurrent at 0.8 pf. lagging by Potier method. E- 3"

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Example 37.35. An 11-kV,
1000-kVA, 3-phase, Y-connecied
alternator has a resistance of 22 per
phase. The open-circuit and full-load
zero power factor characteristics are
given below. Find the voltage
regulation of the alternator for full
load current at 0.8 pf. lagging by
Potier method.
E-3750 V
(90+
450 V
37.2 A
V- 3465V
(90+
26.5 A
Fig. 37.59
Fig. 37.60
Kv
Alternators
1447
Field current (A)
O.C.C. line voltage
Line volts zero pf.
40
50
110
5,800
140
180
7,000
12,500
13,750
15,000
1500
8500
10,500
12,500
(Caleutta Univ. 1987 and S. Ramanandtirtha Univ. Nanded, 2001)
Transcribed Image Text:Example 37.35. An 11-kV, 1000-kVA, 3-phase, Y-connecied alternator has a resistance of 22 per phase. The open-circuit and full-load zero power factor characteristics are given below. Find the voltage regulation of the alternator for full load current at 0.8 pf. lagging by Potier method. E-3750 V (90+ 450 V 37.2 A V- 3465V (90+ 26.5 A Fig. 37.59 Fig. 37.60 Kv Alternators 1447 Field current (A) O.C.C. line voltage Line volts zero pf. 40 50 110 5,800 140 180 7,000 12,500 13,750 15,000 1500 8500 10,500 12,500 (Caleutta Univ. 1987 and S. Ramanandtirtha Univ. Nanded, 2001)
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