what is IP 55 & IP 54 ?

1 Answers  

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what r PID controllers?why they r used?what is there purpose?plz Explain in detail

0 Answers  

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what is the function of 1 phase preventer?

3 Answers   ABB, Electrical,

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how i chosse capacitor bank if my energy meter is 48 kvr? tell me capacitor bank chossen formula?

0 Answers   Bhel,

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Three set (each phase contain 2 cable of 400 mmsq CU XLPE AWA) of single core cables are connected to 11 KV motor of 14 MW & the switch gear supplay is taken from 11kv feeder & this supplay taken from 275 KV substation. Problem is one pair cable(L3- 2 cable ) getting very hot & gland melted and damaged in switch gear side. the other two cable haven't any more hot(ambient temp only & L3 haveing 95- 100 Degree C. The same problem happened in 275 KV substation switch gear side also where the supply taken for 11 kv switch gear. But here L2 phese cable had problem. Why it is happening like this?. The cable having temperature different at different location from gland side inthe case of 11KV feeder of 275 kv substation. why ?

2 Answers  

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how can findout cable fault Location only useing MEGGER

3 Answers  

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What is mean by hot and cold loop testing?

0 Answers  

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what is the use of commutator in dc motor if we supply ac ? commutator is used to convert ac to dc.and it is used to arrange the flux in unidirectional in case of dc supply. if we give ac as supply to dc motor what is the use of commutator?

0 Answers  

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why we use dc motor instead of ac motor?

7 Answers   Air Force,

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why cant we use earth as neutral at home whereas neutral is actually grounded at transformer end?

4 Answers  

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what will happen if phases are not shorted with neutral in transformer impedance test? and if neutral is not connected with ground?

1 Answers  

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WHAT IS A DIFFERENCE BETWEEN A DC GEAR MOTOR AND STEPPER MOTOR.AND WHICH IS MORE APPROPRIATE TO USE FOR POSITION CONTROL PURPOSE?

1 Answers  

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