excitation limit of an excitor

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is KVAR (not reverse power) relay necessary to protect from excitor field failure on a brushless, synchroneus generator? Some people with previos experince tell me no but the manufacturers tell me it is designed for that purpose. Is it that it is only necessary for brushless generators and not the older style with the slip rings and brushes?

1 Answers  

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What principle and operation of frency drive

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which motor is used in watch..??????

3 Answers   Bhushan ITI,

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calculate external resistance values to add to the rotor of a slip ring induction motor. STATOR- 415 V, 3 phase delta, 1100 A, 50 Hz, 1490 rpm, pf 0,86 ROTOR - 660 V, 590 A, 50 Hz. STATOR current at each steps STEP1-600A,STEP2- 800A,STEP3-1000A,STEP4-1100A.

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in slip ring motor if motor specification is given how we calculate its rotor resistance in starting

1 Answers  

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what is the correct format to create a resume for interview??

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i need the details about bhel exam.how to apply for that.please send to my email-id.thenmozhi2k7@gmail.com

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What do you mean by nominal ratio of instrument transformer?

1 Answers  

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What is VCB? Where it is installed?

11 Answers   Hyundai,

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What is the general system requirement of alternator?

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What is the meaning of capacity of a 63 Amps TPN MCB? Is it the per phase capacity or the totol capacity?

1 Answers   Mother Dairy,

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