How to select circuit breakers rating eg. if i select a circuit breakers of capacity 40 amps DC with operating voltage 28 volts and if i what to use same circuit breakers for 300 Volts DC application what is the current rating of this circuit breakers.

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what you mean swtchgear(electrical)

1 Answers  

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what difference between tapping -15% to +5 % and -5% to +15% tap. & how can define HV turns on maximun & minimum tap of power transformer.

2 Answers  

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how we decide scurt (disc) of insulator with respect to kv rating

1 Answers  

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Why transmission line carryiny high voltage and low current?

3 Answers   apspdcl, Universal Power Controls,

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whatdo mean by chopper fed drives.used for ac drives.

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Whats changes in Transformer Oil BDV in changes in temp or Climate?

2 Answers   TATA,

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differnce between single acting and double acting solenoid valves

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What is the vector group of a transformer,how can it be found out?

0 Answers   Jindal,

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What is the use device of the grid.

1 Answers   Premier,

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what are the main Parts of VCB

1 Answers  

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In india, according to trade theory above 5 HP motor reqired star delta starter. But we R connect 11 KV motor with 14MW in Direct to line ( With VCB starter combination) Can U Guess, How it is possible ?????

0 Answers   Equate,

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