Answer / k.prakashchandra

The overload relay may be set at 110-120 % of the rated
current of the motor

We use MCCB not MCB for motor starters because MCCBs has capablity to drawout the motor starting current which is 5-6 times the full load current of motor for 1sec. Then why we use SDF in starter panel means MCC panels. Pls reply if any one knows this answer.

1 Answers  

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how will calculate the winding ohmic value in 3phase motors in h.p wise? ex.10 h.p motor winding value ph to ph ? 5 h.p motor any calculation please send me.

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for a 500 KVA connected load, I calculated 30% of capactor for power correction. Even after using 225 KVR capactor PF is not improving. What could be reason for low Phase correction factor?

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hopkinson's test

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what type circuit breaker is suitable for connecting 1000A load VCb,Mccb?

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WHAT IS REACTIVE POWER?

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why neutral is neccessary?

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