what is the kva rating of 20 kv transformer?

1 Answers  

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why the the phase transformer's nuetral has been grounded

2 Answers  

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what is the rating of Insulation tester for measure 15 KW, 3 phase 415V 50 HZ induction motor?

2 Answers   ABB,

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What are the special protection given for high capacity Motor, more then 10mw

2 Answers  

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For a 6.6kV Motor it is recommended to do megger test with 500 V d.c and not more than 5kV d.c but the Hi voltage withstand test should be performed by 12kV AC. Why the dc voltage test should be limited but AC voltage withstand test could be with such a high voltage?

0 Answers   Hormozgan Steel,

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what is bus pt and what is the function of it

2 Answers  

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What is an ac motor?

0 Answers  

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there is a power transformer 66/11kV in delta-delta connection has 5 feeder coming out from the secondary side. One of the feeder in it normally loaded (loaded than other feeder)and this feeder usually trips with double OCR causing the bank transformer to trip. Now if the load of this feeder is put on other transformer then that no problems occurs on that transformer or the load. However normally all the test(IR, PI, short ckt, open ckt,grounding test and other ) has been conducted for this but evertything transformer..... I am not geting what is the actual problem...

2 Answers  

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What are the methods/types of distance protection schemes used in transmission system?

2 Answers  

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when will cause the negative sequence falut in electrical system?

2 Answers   Schneider,

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Classify milling machines.

0 Answers   Ashok Leyland,

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What is the difference between MCCB,ELCB,RCB & MCB

2 Answers   Bhel, HCL, HPL,

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