Answer / r k choudhary

Ring main unit is a looping of all equipment if power
supply from end fail then power supply from other end fed
in equipment. there will be no hindrance in our work.

Answer / david vk2cz

ATS is an automatic transfer switch, meaning it will accept power from 2 sources, and automatically switch to the source with available power. This can be dangerous in maintenance activities, unless it is switch to manual. Mostly used in datacentres, underground train stations and underground corridor lighting

what is vector surge & vector shift? we have 25.3 MW(11kv) generator & 11kv/132kv transformer, connected with with 132 kv grid.vector surge relay is tripping frequentaly.what is permissible maximum limit for this.

3 Answers  

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Logic using 1 kV or 1,1 kV grade in house wiring Low voltage cable. Explain/suggest? some use 1kV and some prefer 1.1kV grade insulation low voltage cable why??

0 Answers  

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what is the differnce b/w voltage and current

8 Answers   Steel Plant,

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what is meant by impedence? can you describe easy becuse iam not well familier in electrical?

2 Answers  

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What is core balancing in Power Transformer. What is the affect of an unbalabce core.

1 Answers  

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What is force on a conductor in a magnetic field ?

0 Answers  

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why phase to phase voltage are 290 rather then 440?

1 Answers   Bosch,

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reason behind why the reverse power relay of incoming machine was not acted even when no load was shifted on incoming machine after synchronising the machines ?

2 Answers  

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what is meant by distance protection ? how distance protection relay function ?

1 Answers   ABB,

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Is any generator is developed which is operated with out diesal or other expensive source?

0 Answers  

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what are the methods of speed control of dc motor???

4 Answers  

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how to changeover ups in this power failur time?

0 Answers   Essar,

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