How to select circuit breakers rating eg. if i select a circuit breakers of capacity 40 amps DC with operating voltage 28 volts and if i what to use same circuit breakers for 300 Volts DC application what is the current rating of this circuit breakers.

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I want to wire sizing calculator which website is available it

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why ie corona losses in tranmission line

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what is threshold voltage for a relay???what does it exactly means ?whats its value in our indian transmission system say 11kv feeder RMU relay

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in india single phase is 230v and three phase is 440v but in other countries single phase is 110v and three phase is 380v why..?

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Q: How to calculate Transformer losses , tell us by Formula.

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calculate multiplication factor of a trivector meter with line ct ratio 200/5A, line PT ratio 11000/110V and meter CT ratio 200/1A and meter pt Ratio 11000/110V.

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What does a permanent magnet generator do?

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HOW CAN I GET 5CORE HO7 CABLE SIZE IF I HAVE 1800A?

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State kirchoff current law?

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If I want to buy a new Xformer for my plant what are the main parameter will I need to check?

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What is Primary And Secondary Injection Test of Relay and Other Electrical Devices. How IT is carried out.

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