Answer / manikandan krishnan

As sathish said it might have main bus bar,Earth bus bar & sometimes control busbar which is used to feed auxilary supply to relay ,meters and some times control circuits are also available in the switchgear panels.

Answer / sathesh

For switchgear panel we have R,Y,B,N and Earth busbar. Total 5.

Answer / vijay balu raskar

Busbar is only one which is long strip of conducting material. There is no type of kinds of busbar but which can be made by different conducting material if required. Mostly, copper busbars are in used.

we have taken HV test of 2.5 k and Megger test on 11 kv HT cable.here it shows no fault but when we are charging the same cable with 11 kv supply why the VCB 11 kv gets tripped can anybody define the possible cause of fault ?

4 Answers   MAHINDRA,

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Iam deepthi.i completed my b.tech from electrical engineering.i want to prepare for civil services.i dont have much knowledge about these exams,but i have great zeal of cracking exams.plz provide me suggestions to which options i can select for optionals

7 Answers  

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if field winding of synchronous generator are shorted on each other will it start or burn or run for short time like induction motor

1 Answers  

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I am having a DG set.The 415 V from Generator is step up to 460 v and then the same is used for Induction furnace. before Step up, I am connecting LT load to my factory use. When Induction furnace is in service from DG, when i try to start a motor, the generator is tripped.Please tell me the reason.

3 Answers  

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working principles of a generator

3 Answers   Cairn,

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Why Auto Transformer is called "Auto"? What is the logic?

1 Answers  

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What is water cooled chiller plant?

1 Answers   Gulf, IOCL,

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what is the transiant condition in alternator? and how it can be prevanted?

0 Answers  

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how can you size an automatic voltage regulator?

0 Answers  

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Please clarify, 1. Is it required to lay two runs of GI wire along with Armoured LT cable if it is laid between one big mains (63Amps TPN SDF) to small main (32A TPN SDF) with proper glanding termination? 2. If the armoured cable with proper glanding is laid from DB to CNC machine, is it required to run two runs of body earthing to the Machine from DB? 3.If the armoured cable with proper glanding is laid from Substation to Hangar, distance is approx. 100 mtrs, is it required to do earthing at shop area though the primary termination at substation is earthed through gland.

0 Answers   HAL,

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what is difference between neutral and ground wire?

2 Answers   TCS,

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How to select cable rating for HT/LT Panels

1 Answers   Alstom,

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