Given: 275 kW, 3-phase, 6,600 V was tested with the following results. OCT in volts SCT in Amps With the stator short circuited, a field current of 50 A yields a : 5600 : 46.5 6600 7240 8100 58 67.5 96 short circuit current of 35 A. Determine by MMF Method the following at unity power factor FIND: 1. FIELD CURRENT REQUIRED TO PRODUCE RATED VOLTAGE AT NO LOAD= AMPS 2. FIELD CURRENT TO NEUTRALIZE THE EFFECTS OF ARMATURE REACTION==. AMPS 3. Field current required to produce rated voltage at full load 4. no-load voltage= V 5. %VR

Given: 275 kW, 3-phase, 6,600 V was tested with the following results. OCT in volts SCT in Amps With the stator short circuited, a field current of 50 A yields a : 5600 : 46.5 6600 7240 8100 58 67.5 96 short circuit current of 35 A. Determine by MMF Method the following at unity power factor FIND: 1. FIELD CURRENT REQUIRED TO PRODUCE RATED VOLTAGE AT NO LOAD= AMPS 2. FIELD CURRENT TO NEUTRALIZE THE EFFECTS OF ARMATURE REACTION==. AMPS 3. Field current required to produce rated voltage at full load 4. no-load voltage= V 5. %VR

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter6: Power Flows

Section: Chapter Questions

Problem 6.53P

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