i want to know how to calculate the battery capacity based on the UPS . ex i want to run have one kva UPS Which should run 10 hours ? in that case how many batteries to be installed and what will be the AH Value .

2 Answers  

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howmany electrician should maintain for a 1000 kva used plant... in kerala..

0 Answers   Godrej,

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if a 3 phase induction stator has charactristic plate and have on winding inside.with the calculation of plate or dimenssion of core how one can desinge rewinding drawing.

0 Answers  

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what is the VA(Voltampire)? define with calculation?

4 Answers  

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Advantages of short circuit and open circuit tests of a transformer?

3 Answers   Engineering,

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what is meant by rotating magnetic filed

0 Answers  

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Why Transformer Neutral having one earth pit ( more earth electrode resistance) whereas body have many earth pit ( less earth electrode resistance)?

0 Answers   OPS,

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How to do cable earhing? whether by grounding Armour to ground or by running extra G.I wire along with cable? which one is preferred mostly amoung them? If the second one is more preferable how many GI wires to be run along with cable (1 or 2)?

0 Answers   HAL,

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What is the formula for finding fault level of generator?

11 Answers  

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what is RCBO?

1 Answers  

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How reverse power relay sense the power is reverse in the system.

2 Answers  

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WHWT IS USE OF VACCUM CIRCUIT BREAKER

4 Answers  

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