How to calculate ht side cable of 630 kva oil cooled outdoor transformer?

1 Answers  

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time constant of RC series circuit?

2 Answers   DVC,

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what is principle of DC machines?

5 Answers   APTransco, NTPC, Wipro,

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what is the meaning of DSL

4 Answers   Airtel,

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How many types of faults are there in 3 phase power system?

0 Answers  

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How to connect a Restricted earth fault relay for 2000KVA,11/0.433 KV Distribution Transformer and What is the neutral CT ratio should be selelcted for 2000 MVA Transformer for estabilishing the Restricted earth fault relay

1 Answers  

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WHAT CAUSED THRESHOLD VOLTAGE TO EXIST?

0 Answers  

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what is the diffrence between resistive , inductive and capactive load please explain with exmpels?

2 Answers  

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what are factors to be consider to design a HT & LT motor?

1 Answers  

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how many testing use in power transformer?tell equipment names?

2 Answers   ABB, Electrical,

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WE are using a 63A MCCB(SIEMENS MAKE) for one of the feeder in LV substation panel.It is supplying to a lighting & power socket DB.Settings in the MCCB is Ir = 63 * 1 , Isd = 8 times of Ir , tsd = 0.5 sec( I2 t off). Sometimes this MCCB is tripping .But no trip in DB MCB. Can anybody tell me reason ? From where i can know about the MCCB settings?

5 Answers  

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why earth hole size is biggest in plug point?

13 Answers   RRB,

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