Answer / waseem aslam

Control circuit wiring of substation refers to wiring of protection relays of transformer with the circuit breaker and wiring of over-current/earth-fault protection relay in the CB, including manual tripping operation.

Answer / k.prakashchandra

The control circuit is for opening and closing on command.

Which is the oldest hydropower plant in india?

0 Answers  

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Without seeing the nameplate descriptions of a rotating machine,Is it possible to say which one is a motor and which one is a generator? How would you certain this?

3 Answers  

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what precautions to be taken while desigining a LT,HT panel. Eg-LT panel PCC panel with ACB installed. HT panel VCB panel with VCB installed. & what is main diffrence betwn IP54 & IP55 construction of panel.

0 Answers   Bhel,

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Name two low frequency oscillators?

0 Answers  

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why we are using the 2 slope in differential relay?but in busbar differential we are using only one slope. what is the reason.

1 Answers  

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what is Different between Bilinear and Unilenier?

0 Answers   ABB,

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For Bus duct hi pot test, where we want to connect the return and ground leads?

2 Answers  

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how copper and aluminium wires or cables are choose for current rating? please provide copper and aluminium wire selection chart for different current rating ?

0 Answers  

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Explain UPS

1 Answers   Powerica,

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difference between the earthing,grounding and neutral

1 Answers   DLF, L&T,

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How we can determine short circuiting current any plant and for example a plant which power generation is 415 volts and plant load is 500 kw.

0 Answers  

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what is ratio test?

1 Answers  

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