What is primary and backup protection?

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How will you calaculate the Ct ratio based on connected load 500KVA,and 11KV supply ?

3 Answers  

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In a 3Ph induction motor(old) 6 wires came out from terminal & not mentioned u1,v1,w1,u2,v2 & w2. how can find out the terminals? how can connect to star delta starter??

1 Answers  

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how vfd drives energy save

5 Answers   PowerTech,

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WHAT IS ELECTRICAL MAINTAINTENCE ?

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What is the maximum No. of out going mccbs permitted from an LV distribution paqnel? What is the ampere relation between incomer and out going switch gears/mccbs?

0 Answers  

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While connecting the flood light plug on to the 415 V distribution panel,there was spark and the cable got burnt. Three ignitors of the flood light also burnt of. The lamps are of 400 W (total 6 lamps) connected through 1.5 mm2 cable. The plug was immediately removed from the circuit. There was a 30 mA RCD connected and a 250 A MCCB; however both did not trip. What could be the possible reasons for the circuit devices not to trip?Can someone assist please. Additional info if needed can be provided.

2 Answers  

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ACB & VCB how do work and saftes and how can maintenance in this and parts name show with picture

0 Answers   Mukand,

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Explain the experiment on ward leonard method of speed control of a dc shunt motor.

2 Answers  

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Can anyone tell the proper diagram of star delta starter????

0 Answers  

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What are the types of instrument transformer?

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how to carried out tan delta test in 11 KV alternator ?

0 Answers  

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