is it necessarry to charge the battery of ups always??

3 Answers  

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What is auto reclose system in Circuit breakers??

4 Answers  

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what is the surge arrestor?how it operates?what is the range for it?

4 Answers  

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What is the function of neutral CT in transformer? Turn ratio of typical CT for 2MVA transformer ? or relation between full load current of transformer and neutral CT ?

1 Answers   Electrical Inspectorate,

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what are the functions of fuse ?

1 Answers  

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Basic motor transformer generator

0 Answers   eCentric Solutions,

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ELCP USE IN 3 PHASE SUBMERSIBLE PUMP? THEN USE 3 POLE 0R 4 POLE?

4 Answers  

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I have 30KW Motor Starter Panel, System voltage is 480V, So i have to convert voltage 480 to 220V to give the contactor coil. How i can select control transformer, Which rating transformer i can use this panel, what is the procedure, please tell me.

2 Answers  

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How to check the specific gravity of the two 12 V batteries connected in series to a 24 V UPS and inverter ? will we have to disconnect all the connections and turn off the UPS and inverter or not ? will we have to check specific gravities in each cell of the two batteries ? what is the name of the instrument that is used to check the specific gravity and whats the procedure to check the specific gravity with it ? thanks

2 Answers  

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Derive the inductance of a coil in terms of its physical factors.

1 Answers  

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What is difference between miniture circuit breaker and module case circuit breaker up to 63Amp.

7 Answers   MSPL,

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why normally Generator rating are between 11Kv to 22Kv?

2 Answers   IFFCO,

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