Answer Posted / rvg

Two eathing are req. minimum. Since the star point is
earthing solidly, and obviously the generator frame/housing
also to be provided with earthing to prevent any shock due
to insulation failiure.

if the generator is connected with a fuel tank, (for higher
size), it is necessary that, fuel tank to be grounted to
prevent lightning surges and any static voltage generations.

Can any one give an explanation about rating factors of cable? if we are laying the cable on the air with an temp 15 degree then rating factors will be 1.15 and if we are laying the cable on the air an temp 60 degree then rating factor will be 0.76 please describe it and what is the difference between rating factor and derating factor?

1496

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in single phase converter, the no.of scr's conducting during overlap a)1 b)2 c)3 d)4

2063

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how to identify the cable quality and what is flame proof cable

2105

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Does magnetomonopoles exists? one maxwell equation strongly suggests no, but how about their existance in plasma?

1996

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How to do bus bar short circuit calculation for 230KV/11kv, 60 MVA Substation?

4716

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Define resonant peak?

1138

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what is arc flash and what are the hazards involved

2149

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how a resistor resists to flow the current?how an inductor oppses the sudden change in current?how a capacitor opposes a DC voltage.

2762

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what do w do when the output of generator is fluctuating?

2248

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how to select battery for 15 KVA UPS with formula

2539

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Cb closed condition if there is a tcs fail whether cb will trip or not

1821

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can we use trip light with bus coupler?

1931

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what is the difference between the voltage of 5 volts capacitor and and 5volts battery?

1942

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How delta connection in the primary of distribution transformer reduces harmonics?how delta connections reduces harmonics?Please answer me...Hope that question is correct.

2204

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What is the formula to calculate the rating of a three phase air circuit breaker

2320

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