Answer / abdelrahman fahmy

Air Circuit breaker
SF6
Vacuum
Air Blast
Oil immersed circuit breaker
the most common types are SF6 and Vacuum
Vacuum is compact size than the SF6

Hello friends., my question is related to testing of current transformer... A Ct having knee point voltage of 750 volts., and I have two step up transformer's of rating 230 v to 440 volts., can I obtain the value of 750 volts by using the two transformer's.... If yes then how could I connect the transformer's to obtain knee point voltage?? thank you in advance

1 Answers   ABB,

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why alternator is used instead of dc generator and induction generator

1 Answers  

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Why D.C Voltage used in Meggering...as well as in Hipot test? why not A.C?

2 Answers  

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What is the estimated total hydropower potential of india?

0 Answers  

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why neutral is required in electrical system

3 Answers   Bhel,

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HOW DG WORKS ?

3 Answers  

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how can maintaince the acb contactor moveing and fixing kit

0 Answers   Gulf Cement,

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What is the formula formula for Busbar sizing and what are the things to be consider for Busbar Calculation?

0 Answers   ABB, APL,

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what will happen if we directly give supply to rotor of a induction motor?

1 Answers  

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hello friends.. I have a doubt regarding the operation of dc machines.. I studied in a text book that a dc machine can be used as a generator and as a motor.. is this possible? If so,please send me the info about this topic.. you can also send your info to my mail.

0 Answers   Bhel, CVL,

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what do you call the last pole on a overhead line near a substation

2 Answers  

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how does bode plot have an advantage over root locus? how does it determine the stability of a system depending upon the location of poles and zeroes?

2 Answers   NBKR,

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