300m long and 30kw inductive loade 3phase supply how many size cable required

0 Answers  

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what is a bus post insulator? explain its application in a substation.

1 Answers   Enercon, HAL,

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What is the permissable nutral current of three phase system as per IS standards?

0 Answers  

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types of motors suitable for escalators with reason

2 Answers  

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sir pls send the je exam - 2008 and other model question papers..

0 Answers  

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how to identify 3phase....r y b .A new make altnator how to identify R

2 Answers  

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Sir we have 12.5 MVA(110/11KV) transformer (Y-Y) connected,which tripped showing earth fault,when we charged transformer it stood OK ,but on connecting 11 KV feeders it tripped showing earth fault.our service engineers found that the B phase and R phase phase connecting to neutral broken from HV OLTC(on load tap changer),and R phase and Neutral is ok.Dissolved gas analysis shows that accetline content is high,tan delta value is 12.My dout is it is an internal fault of transformer,why REF or diffrential relay is not acted?

1 Answers  

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What is accuracy of a measurement?

0 Answers  

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why fault current time duration is calculated for 1 minutes?

1 Answers   Rockfort Engineering,

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In a HT switchboard where Nos. of Transformers are connected, how to decide Incoming cable size? Whether Cable should be rated for connected load or maximum demand?

1 Answers   Power Grid,

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what is the sweep commenly used 1200mm sweep and 600mmsweep please tell me breifly sweep

1 Answers   Khaitan,

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I am abt to give IOCL intrv.Plz sir guide me for IOCL intrvw (Electrical).Which subject to be consider. questions are generally asked from which subject.Plz help me out.

0 Answers   IOCL,

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