how to select battery for 15 KVA UPS with formula

0 Answers  

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WHAT IS DEGREE OF COMPOUNDING IN D.C MACHINE MEANS? HOW TO READ THE OPERATING CHART FOR ANY ELECTRICAL MACHINES?

0 Answers   Coal India, Ghana Grid Company,

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what is meant by impedance & transient protection?

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why inductance is not present in a incandescnt lamp?

2 Answers  

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How to operate a ac chilar plant?

0 Answers  

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What is phase angle? and what is importance to measure it?

2 Answers  

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why we use stones or rock pieces in transformer area?

10 Answers  

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why the making current is more than then the breaking current and if its true then its about a controling circuit or breaker power contact points

0 Answers  

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What is ideal IR values for ground and neutral.

0 Answers   Hindustan Power Projects,

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sir, plz tell me how much kvar capacitor required for 1000 amp or 500 Kw load ? what is the formula ?

14 Answers   CSPL,

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Please clarify, 1. Is it required to lay two runs of GI wire along with Armoured LT cable if it is laid between one big mains (63Amps TPN SDF) to small main (32A TPN SDF) with proper glanding termination? 2. If the armoured cable with proper glanding is laid from DB to CNC machine, is it required to run two runs of body earthing to the Machine from DB? 3.If the armoured cable with proper glanding is laid from Substation to Hangar, distance is approx. 100 mtrs, is it required to do earthing at shop area though the primary termination at substation is earthed through gland.

0 Answers   HAL,

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How to find ampere on ht side for selection of cable size ???

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