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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Purpose of providing neutral isolation panel for parallel operation of diesel generator

0 Answers  

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At present how many HVDC lines are there in india

18 Answers   HAL, Infosys, KSEB, Kuntham,

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why is efficiency of transformer more than that of other rotating machines?

1 Answers  

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How do i perform grounding of star point of Genset (400V) for making connection with step up transformer of DELTA-DELTA (400V to 20KV) ? while Genset itself has its own neutral and grounding bus bar inside genset breaker box whereas we have another neutral and grounding busbar in synchronizing panel next to genset at maximum distance of 6meter, would someone pls advice if we can only perform neutral grounding in synchronizing panel or should we ground neutral on both places inside genset breaker box and synchronizing panel.

0 Answers   Allied Group,

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What is the purpose of REACTOR in GIS substation?

1 Answers  

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what is a speed of rotor when we give supply to stator of 50hz and as well as rotor of 60hz of an induction motor?????

0 Answers  

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374kvar capacitor bank connected across 600kw,6.6kv motor.what will happen if motor run at 50% , whether full kvar applied or half?

1 Answers   NTPC,

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How can we define 'Phase'

4 Answers  

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what is the earthing condition between earth & neutral.

6 Answers   ABB,

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Why capacitor bank ratting Kvar?

1 Answers  

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Dear friends, i would like to know that what is the exact function of 'exciter winding' & 'aux winding' in Alternator?

0 Answers   NTPC,

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