How is operate breaker failure scheme in substation

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% voltage variation in distribution a)1% b)5% c)10% d)15%

2 Answers  

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Explain Creepage Distance of Insulator

0 Answers   ABB,

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How to find out freqency in Ac and Dc and also how u control it

2 Answers   MacLellan,

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how ELCB drip when earth and phase touch together?

2 Answers  

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when a primary current injection test is required, it is accomplished by what?

3 Answers  

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What is trip and closing coil in cb? Why need of them

0 Answers  

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If you don’t have coal, salt and copper, then how would you earth your connection temporarily at a camp site.?

2 Answers   Focus,

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Why did call copper as a electrical conductor?

2 Answers   ABB,

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What is dielectric loss?

0 Answers  

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dear all i am kumara now current working in electrical designing of control and relay panel i want learn some substaion design then any book are available. pls mention name and authour

0 Answers  

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can we make a loop between neutral and body for grounding?

2 Answers  

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