Answer / anand

nc is normally contact to common terminal,when gives supply to the relay common contact to no contact

Answer / k.prakashchandra

You mean the aux switches of cb ? There are NO and NC
contacts (determined when the cb is in open position)which
operate when the cb opens or closes.

what is meant by real power,active power,reactive power & apprent power ?please explain it?

3 Answers  

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what is the difference between a feeder and a cable?

3 Answers  

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what was the function of the auxillary relay?

3 Answers  

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what is the function of mccb?

6 Answers  

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The gauge indicates the number of amps, but what about voltage? How voltage rating (for wire or fuse) determined?

0 Answers  

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why so maney smaller size capacitor use instead of single Big size capacitor in apfc panel

1 Answers  

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why using carbun bresh in dc motor

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why connecting surge unit in contactor coil

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When color of silica gel will gets change from blue to pink from Top to bottom?

0 Answers  

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in the directional overcurrent and earthfault protection,normally we are setting the angle 45 deg lead for phase fault overcurrent and -45 deg lead for earthfault fro forward direction.but both the fault are operating on the same angle region only.why?how the relay will response?

0 Answers  

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why on axial hitting up of air blast on hydrogen produced in oil circuit breaker,temperature rises of the core of the arc?

0 Answers  

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what is the VVVFD and?

4 Answers  

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