why high speed tripping relay will be used in tripping circuit why not normal relay

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How to calculate amount of copper used in a motor (AC&DC), generator and transformer? Datasheet provides power rating and mass of the equipment....can we somehow use this available info.

1 Answers  

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how can we determine size of a cable by knowing the kw or current rating of a load?how can we calculate the resistance box of a slip ring motor?

0 Answers   TK Group,

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What is Primary and Secondary Injection Test of CT and Relay.

2 Answers  

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Explain why inductance of the iron cored coil changes with current?

2 Answers  

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how to flameproof electrical motor on the shaft?

0 Answers  

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define IDMT relay?

15 Answers   APGenco, Bhel, L&T, Shriram Finance,

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What are unstable systems?

0 Answers  

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after how many spot we must chang secondry cable in portable spot welding gun?

0 Answers  

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if our motor load is 150 amp v- kv and we want to install capacitor bank then what is the exact value of that capacitor bank that we should install?and how we calculate that

0 Answers  

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what do you mean by star point.its importance in ct & pt

2 Answers  

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A single line diagram(SLD) and a purchase order of a 11/66kV switchyard of a power plant was given. In the SLD, only one lightning arrestor(LA) was shown, but the purchase order had need of 3 LAs. Is this correct, if yes, why?

2 Answers  

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