Answer / k.prakashchandra

Back up time is decided by batteries and the load.The
formula is simple. B/U time in hrs = stored energy in
batteries (AH x V(both of each battery) X Number of
batteries)/Load in Watt

Dear All please ive me ur ideas... What is the major diff between cu conductors and Al conductors ?

3 Answers   MX Technology,

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Difference between copper earthing & aluminium earthing?

2 Answers  

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dear all, in motor operation , motor is of 100 hp and bimetal relay setting is 130 amp, if relay is getting tripped on 120 amp balance current what can be the reason? Relay is newly replaced. I dont know but is there any frequency effect in thit case? Can frequency variation affect bimetal relay operation?

1 Answers  

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when we are going to higher voltage level in substations why we are using Sf6 circuit breakers instead of Vacuum circuit breakers.

3 Answers  

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how many parameters can integrate with fire alarm basically ?

0 Answers   Schneider,

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How does a star connection and delta connection work? How does the star connection save starting current and how does it change to delta?

3 Answers  

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what is the first step of dg shycroning ?

2 Answers   ABB,

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what is ignition?

1 Answers  

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Why the unit sizes of hydro generating machines are not standardized as in case of thermal powerplants?

0 Answers  

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if flow of electrons is current then why their direction are different???

1 Answers  

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Define load factor?

0 Answers  

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We have 5 Distribution sections with variable loads&We have 3 Gensets(500kva,380kva&250kva) our total load is between 400kva to 600kva. so how could we connect 3gensets.

0 Answers  

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