Answer / k.prakashchandra

Back up time is decided by batteries and the load.The
formula is simple. B/U time in hrs = stored energy in
batteries (AH x V(both of each battery) X Number of
batteries)/Load in Watt

how to calculate restraing current and operating current for differential protection if 20 mva transformer is OLTC 33 kv/11 kv ? and what should be the type and ratio of CT?

2 Answers   L&T, OPS,

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Any body can help me in getting LT panel test procedure.

0 Answers   TATA,

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Difference between SHORT CIRCUIT and an OVERLOAD ?

1 Answers  

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In electrical what is earth(ground)connection, wht is the importance of it, why it is recomended to maitain below 3VAC between Neutral and earthspecially in PLC used machines?

0 Answers   Nissan,

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what is the function of commutator in dc motor?

3 Answers  

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wht is this amps in power consuption and how can we convert that into consuption hours ? i am a sales executive of a energy saving lamps .

5 Answers   KSEB,

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Why mostly the HV side of transformer has Delta?

0 Answers  

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What are the factor to be consider for CT selection in 132kV substation?

0 Answers   ABB,

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IT IS DESIRABLE THAT THE INCOMING MACHINE SHOULD BE A LITTLE FAST AT THE TIME OF SYNCHRONIZING.EXPLAIN?

1 Answers  

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where is the need for short circuit test for 3 see is required and why? can you explain in brief with application

0 Answers  

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How cable from Kit-Kat to main switch, from starter to motor are designed?

0 Answers  

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how and where does star and delta connection is used ?

2 Answers  

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