UPS battery Back time = no.of Batteries * Ah of the Battery / output KVA * 130 ? what is the 130 means ? can any one help? because all are using this formula how its came 130?

2 Answers  

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what is difference between di electric and insulator?

2 Answers   Greenko,

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WHAT IS MEAN BY MAGNETIC LOCKING

3 Answers   Bhel,

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What principle and operation of frency drive

2 Answers  

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During the testing of Electrical Equipment the test cables should not touch the equipments. For that testing engineers use to cotton rope to hang the cable from measuring Equipment to testing equipment terminal. Please explain the technical reason for this practice.

1 Answers  

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what is the procedure for cable sizing or on what basis we will calculate the size of cable?????

6 Answers   ANG, Focus, Mecon,

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where we use stardelta starter and dol starter

4 Answers   HCL,

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If a current -8+6sin6t is flowing three ammeter, one is a centre zero PMMC meter, one is true rms meter and one is moving iron meter. What are the reading of these three meter respectively?

0 Answers   National Insurance Company Limited,

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what is the function of open delta System?

1 Answers  

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How much should be the specific gravity of a DG set battery Electrolyte.

2 Answers  

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WHAT IS SHORT CIRCUIT STRENGTH OF 100 AMPS MCCB?

0 Answers   ACC,

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why dc is used in control circuits for MV & LV switchgeras instead of ac

0 Answers  

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