Answer / rajesh

I think to prevent collision of two sourse supply as for a.e power grid and DG generated supply.

Please guide if answer is wrong.
Thanks

Answer / k.prakashchandra

It is reverse power relay i.e . directional wower relay

what is the difference between Resistance VS capacitance

2 Answers   Jindal,

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What is ment by KVAR and what are the advantage&dis- advantages of KVAR

2 Answers  

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what happan when ac power transmitted in unity power factor

12 Answers   JE, Maihar Cement,

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when a three phase motor in running condition consumes 2A in each phase,and if one of the phase gets fails what will be the consumption in other two phases

4 Answers  

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How to calculate per unit impedance of transformer?

0 Answers  

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What is difference between ball screw and lead screw.

2 Answers  

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Thermal withstand capability under full short circuit conditions, in terms of number of times of occurrence of short circuit and corresponding anticipated percentage reduction in transformer life.

0 Answers  

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what is fuction static switch in ups and tell me use parts name and fucion

3 Answers   Dalkia,

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I have a 1000 kVA Transformer(11kV/0.415kV) and a APFC panel of 400 kVAR(LT).Now if i want to remove the LT APFC panel and install a HT(11kV) APFC panel on the HT side is the HT APFC panel will work same as the LT APFC panel(improve the power factor),if yes what will be rating of the HT APFC panel?what is the formula to calculate HT APFC panel rating???

2 Answers  

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wats the procedure to calculate no of batteries for ups?

1 Answers  

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Generally we denote power in 'p',voltage in 'v'but why can't we denote current in 'c' instead of I.

4 Answers   Bhel,

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How to improve insulation resistance of Motor

2 Answers  

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