Example: A 10 MVA, 3 phase, Y connected, two pole, 60 Hz, 13.8 KV, line to line turbo generator has air gap characteristic depicted in the following data: O.C.C. Vph : 2700 ,5500 , 7200, 8200 , 8800 , 9400 , 9600, 9900 , 10200 S.C.C. I SC : 130 250 490 620 740 850 If: 50 100 150 200 250 300 350 400 450 The armature winding resistance is 0.07 0 per phase and the armature winding leakage reactance per phase is 1.9 Q. Find the field current that produces rated terminal voltage when rated armature current is delivered to 0.8 lagging power factor for three phase balanced load.

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02:03 40D00 •
O a ull al 90%i
< Title
Example: A 10 MVA, 3 phase, Y connected, two pole,
60 Hz, 13.8 KV, line to line turbo generator has air gap
characteristic depicted in the following data:
O.c.C. Vph : 2700,5500, 7200,8200 , 8800, 9400,
9600, 9900 , 10200
S.C.C. I SC : 130 250 490 620 740 850
If:50 100 150 200 250 300
350 400 450
The armature winding resistance is 0.07 Q per phase
and the armature winding leakage reactance per phase
is
1.9 Q. Find the field current that produces rated terminal
voltage when rated armature current is delivered to 0.8
lagging power factor for three phase balanced load.
1/1
Transcribed Image Text:02:03 40D00 • O a ull al 90%i < Title Example: A 10 MVA, 3 phase, Y connected, two pole, 60 Hz, 13.8 KV, line to line turbo generator has air gap characteristic depicted in the following data: O.c.C. Vph : 2700,5500, 7200,8200 , 8800, 9400, 9600, 9900 , 10200 S.C.C. I SC : 130 250 490 620 740 850 If:50 100 150 200 250 300 350 400 450 The armature winding resistance is 0.07 Q per phase and the armature winding leakage reactance per phase is 1.9 Q. Find the field current that produces rated terminal voltage when rated armature current is delivered to 0.8 lagging power factor for three phase balanced load. 1/1
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