Answer / chander shekher

VCB & ACB are required for protection of electrical equipment/system.
VCB protects for over load, Earth Fault, Short Circuit,for HT Supply
whereas ACB are used for overload, earth fault & Short circuit for LT Supply

what is mean by VCB colour code..???

1 Answers   Student,

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why power is generatd at 50 hz only..? can we do this on another freq...?

7 Answers  

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what is sustainable current of any conductors . a bare busbar or pvc cable has different sustainable current .

0 Answers  

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why Current is lead 90 degree and voltage is lag 90 degree in a capacitor.? why Current is lag 90 degree and voltage is lead 90 degree in an inductor.?

0 Answers  

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HOW DISTANCE PROTECTION IS DONE IN EHV TRANSMISSION LINES? WHAT IS THE BASIC TECHNIQ OR FUNDA USED BEHIND THIS ? SPECIALLY EXPLAIN?IMPEDANCE METHOD.

2 Answers   ABB,

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Explain about p.t?

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Is ground earthing required for neutral conductor of a prime mover ie DG set?

1 Answers  

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Draw SLD feeding from the SS up to distribution board of the load, calculate cable size, breaker sizes, and meter for the following case: Ground Floor: electric room, pump room, 5 shops, each is 15 KW First Floor: 5 shops, each is 15 KW Second Floor: showroom 30 KW Service Loads: water pump 3 KW (3ph) , fire pump 3 KW (3ph), and one DB service 12 KW (3ph).

0 Answers   FEWA, HMK,

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I try to check the three phase voltage in multimeter, in 125A isolator switch incommer. first i touch R phase, and then i touch Y phase using multimeter, the moment i touched, it blasts and that moment i got blindness. multimeter selector position is correct(750V AC MODE AND RED PROBE WASS IN v AND BLACK PROBE WASS IN COM. MODE. COULD ANYBODY GIVE ANSWER FOR THIS TO AVOID FURTHER ACCIDENTS PLEASE?

2 Answers  

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if you are in a software company,then why do you want to come in a core company like sail, ntpc(where lots of trouble like tension but you have a good life in a it company) ?

0 Answers   Sail,

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Usage of flywheel diode in relays

0 Answers   Jindal, Voith,

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voltmeter kya hota hy ?

2 Answers  

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