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1 kva ups is not. charging current 120AH battery therefor use to external charger use or calibratIoin. of ups or overload

why the transformer neutral earthing is to be done by copper flat only,if we use GI flat what is the disadvantage.

2 Answers  

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Why we use stones in switchyard?

3 Answers   Havells, L&T,

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In a tap changing transformer where is the tap connected, is it connected in the primary side or secondary side?

1 Answers  

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What is the RMS and DFT principle of analogue maesurments. Which way they are advangages. where which princples give optimum results.

1 Answers   ABB,

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what is closing resistor in circuit breaker? why it used?

3 Answers  

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?? how to calculate lighting system ????

1 Answers   L&T, Synergy,

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Shall we use Dyn1 transformer in place of Dyn11 for motor application as a distribution transformer

1 Answers   NSL Sugars,

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1. What are the tests to be carried out for CBCT? 2. can measure the secondary resistances? 3. with respect to secondary maximum how much voltage can be applied for IR test.

0 Answers  

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why C.T protection required for H.T.lines?

4 Answers  

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How to decide the fuse ratings for potential transformer

2 Answers   Eskom,

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Why iron core transformers not used in high frequency applications ?

3 Answers  

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3. What is Impedance Voltage in Transformer?

16 Answers   KESC, L&T, Torrent Power,

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