what is mean by PIR in circuitbreaker and give me detail of that?

0 Answers  

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how to i get B licence,i am completed BE electircal and electronics engineering.i want to konw the proceduure to get b licence

0 Answers  

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how to differentiate a mpcb,mcb with a contactor? Explain their working operation

0 Answers   L&T,

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why aggregate is placed all around substation ground.

1 Answers  

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I have 30KW Motor Starter Panel, System voltage is 480V, So i have to convert voltage 480 to 220V to give the contactor coil. How i can select control transformer, Which rating transformer i can use this panel, what is the procedure, please tell me.

2 Answers  

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circuit breaker is ...............connected with circuit

2 Answers   Rancho,

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if we going for high voltage usages what are the considering factors, why those factors are effected.... please give me an answer related motor factors like wnidnig, frame, temp etc

1 Answers   ABB,

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what is the difference between between open delta and broken delta?

5 Answers   Reliance,

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How can we find out LT UG cable fault (size,from-4*25mm sqr to 4*300mm sqr)? How mani types UG cable faults?

0 Answers  

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State the formula for overall efficiency of thermal power station

0 Answers  

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how can i get the formula to find out the cable size if i know the load of main fuse protection.

0 Answers  

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what is the difference between equipment earth and system earth.

1 Answers   Hofincons,

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