A 10 MVA, 3-phase , Y-connected, two pole,60 Hz, 13.8Kv, line to line turbogenerator has air- gab characteristics depicted in the following data : O.c.C. Vph :2700 5500 7200 8200 8800 9400 9600 9900 10200 S.C.C. Isc: 130 250 490 620 740 850 It : 50 100 150 200 250 300 350 400 450 The armature winding resistance is 0.07'n per phase and the armature winding leakage reactance per phase is 1.9 n. Find the field current that produced rated terminal voltage when rated armature current is delivered to 0.8 lagging Pf three phase balanced load. Use the non-linear general method.

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A 10 MVA, 3-phase, Y-connected, two pole,60 Hz, 13.8Kv, line to line turbogenerator has air-
gab characteristics depicted in the following data :
O.c.C. Vph :2700
5500 7200 8200 8800
9400
9600 9900
10200
S.C.C. Isc: 130
250
490
620
740
850
It
: 50
100
150
200
250
300
350
400
450
The armature winding resistance is 0.070 per phase and the armature winding leakage
reactance per phase is 1.9n. Find the field current that produced rated terminal voltage
when rated armature current is delivered to 0.8 lagging Pf three phase balanced load. Use the
non-linear general method.
Transcribed Image Text:A 10 MVA, 3-phase, Y-connected, two pole,60 Hz, 13.8Kv, line to line turbogenerator has air- gab characteristics depicted in the following data : O.c.C. Vph :2700 5500 7200 8200 8800 9400 9600 9900 10200 S.C.C. Isc: 130 250 490 620 740 850 It : 50 100 150 200 250 300 350 400 450 The armature winding resistance is 0.070 per phase and the armature winding leakage reactance per phase is 1.9n. Find the field current that produced rated terminal voltage when rated armature current is delivered to 0.8 lagging Pf three phase balanced load. Use the non-linear general method.
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