Answer / ram

The use of VCB is to make and breaking of HT contacts in
switchgears.

Answer / narayanamoorthy.i

High Voltage Switch gear & arrested more Sparking & easy
Operating Safty Swtch gear.

Answer / sumit

in practice upto 33KV for quenching arc of current of about
1250 A

Answer / srinivasan

VCB is used Genererally in HT Side Because of economic
consideration and simplest operation to quench the ARC.
VCB is used upto range up to 11 kv and up to 1650amp.

what should be the no load current for 3 phase ac motors ranging from 5 kw to 1000kw?

0 Answers  

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i have one source transformer with the capacity of 50KVA, connected with two loads 10kw and second one is 15kw.. how can i calculate first load in KVA and second one in KVA .. because Kva rating, power factor rating of of transformer is different from the load… there must be some way to calculate load KVA rating and power factor….

1 Answers  

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In a three-phase full converter, every SCR conducts for a.60deg. b. 120deg. C.180deg. d.90deg

3 Answers  

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Why indicate only 440V to 3-phase supply.

4 Answers  

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why ac wave is sinusoidal not square or triangular wave what will be reason

1 Answers   ACPL,

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what is the operating time for LBB and how does the LBB relay realise whether cb is opened or not?

0 Answers  

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How can we get electric power from lighting ?

3 Answers   TATA,

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what will happen if a part of primary winding of a transformer is accidentally short-circuited?

2 Answers  

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the electric traction poles having 3 cables n two cables touches with a insulator (or any) another one separated but it will be running 1-phase why?

4 Answers  

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How you calculating the current for a 2.5 Sqmm cable. A 30 Hp 3 phase AC motor of power what size of cable is used for this motor.

7 Answers   Siemens,

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What is the breaking capacity of transformer and how can we calculate the breaking capacity of tranformer

0 Answers   Siemens,

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what is nuetral grounding

2 Answers  

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