800a siemens vcb in our company can not be closed electrcally an mechanicaly cc and oc coils are found ok. why?

2 Answers  

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how to find under ground cable fault ??? if our cable size is 95*4 then what will load capacity with far mull

2 Answers   Imdad,

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In a star(primary) to delta(secondary) transformer,how you take the neutral point?

3 Answers   HLL,

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How to calulate cable size for 200KVA,160KVA& 40KVA load?

1 Answers   ABB,

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why dont we use the same pylon to carry 400 kv plus 220kv and 33 kv ?

2 Answers   Focus, Focus Energy,

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how calculate gd2 of ht motors

4 Answers   Hindustan Copper Limited, Kohler India,

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(1)For 3 No 1500 KVA transformer require on one single bus bar or need to be section through bus coupler means upto 3MVA.(2) 22KV Net work system as ring, How maney I/C required or 0ne I/C and one O/G.(3) What should be rating of VCB for 22 KV line.(4)Electrical/mechanical inter lock, why we need.

0 Answers  

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what do you mean electrical earth pit?

2 Answers   Enercon,

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In case of 3 phase motor why it is called single phasing by failure of one phare unless there is rest two phase are acting. ?

3 Answers  

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What is the purpose of Vector Group in transformer?

1 Answers   Andritz, ThyssenKrupp,

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What should be the minimum and maximum ohmic value for earthing?

2 Answers  

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How to back charge the Gas turbine generator

0 Answers  

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