what is formula in determining the size of Circuit Breaker for transformer with the following specifications. 7 units of 1600 volts (primary) and 400 volts (secondary). Both Primary and Secondary will have a circuit breaker which is SF6. What should be the Switchgear Main Breaker Size anf the sizes of each brances Circuit Breaker for Primary.

1 Answers   ABB,

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sir, i am 3 years diploma course pass out candidate.what type of certificate can i got in marine service.

0 Answers  

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sometime battery charged and then automatically charged when rectifier ON conition, is there any chances please clarify the same.

1 Answers  

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why burdens of VTs is more than CTs?

0 Answers  

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capacitor applied voltage is 1100VDC & capacitance value is 82uF how to calculate current of capacitor.

2 Answers  

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What value(high/low) of diversity factor is desired in power system and why? How such value is achieved?

1 Answers  

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why the motor is rated as kw& transformer as kva

7 Answers   Areva,

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How to know vacuum in vacuum cylinder of breaker in working condition

0 Answers  

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What happens when the polarity changes in CT? Explain briefly?

8 Answers  

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NOW A DAYS THE POWER SUPPLY IS VERY LOW.SO THE FLURESCENT TUBE LIGHTS ARE VERY DIM.IS THERE IS ANY WAY TO INCREASE ITS BRIGHTNESS?FOR EXAMPLE ANY CONVERTER,CONDENSER?

1 Answers   Bhel,

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what is method of dc current measurement

5 Answers  

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What is cross over distortion? How it can be eliminated?

0 Answers  

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