Answer / manoj

The HT panel is the front side (usually) of HT cubicle. If
it is a local control panel there will be one alarm
annunciator ,meters for the indication of different
parameters of electricity ,normal control push
buttons,emergency control push buttons,bypass key for all
interlocks,"local,remote or maintenance" selector rotary
switch,semaphore indicators for CB/isolator/earthing
switch,push button for healthy checks of tripping coils
(before closing and after closing).There wiil be no
hazardous HT voltages as the name indicates,only control
power(110 dc,110 ac,240v ac,440v ac).Inside the cubicle
there will be ,space heater,resistances,fuses,SMPS power
supplies auxiliary relays(protection panel) etc.

Answer / karthick

primary and secondary winding

How to calculate Battery back up time for a 400 AH Battery bank having a load of 20 Amps and charging time required to fully charge this battery bank?

2 Answers  

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When we are working on transformer(132\11KV). we are going to isolate the transformer from both HV side and LV side. then we are applying grounding on both side. My question is that we required to isolate the VT which is still connected from secondary side.?

1 Answers  

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I have a situation to design sub-Distribution board/Panel meant for feeding power sockets. In the incomer CAN i Take TP MCCB with Neutral Link and All the outgoing feeders with to sockets with TP MCCB and Neutral Link? P.S : My System is IT Earthing

0 Answers  

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what is the earth resistance ?

5 Answers   Bhel, Cummins,

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When i went to a interview the interviewer ask me a question for that i cant able to answer him if anyone knows answer me How will you design a capacitor bank for a plant? if my p.f is 0.6 i have to improve it to 0.9 or 1 what kind of steps i have to do? and is there any formula for calculating this?

6 Answers   APNPDCL,

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What is an electric arc?

3 Answers  

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WHAT INSTRUMENT IS USED TO MEASURE THE MAGNETIC FLUX?

7 Answers  

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Derive the inductance of a coil in terms of its physical factors.

1 Answers  

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How do you compute voltage drop and cable size over distance?

0 Answers  

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how megger step up the DC voltage

1 Answers   Voltech,

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what is Touch and Step voltages

1 Answers   Pinnacle,

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we use capister for power factor. when we use capaciter in dg circuit  than defect dg. can we use capaciter bank for dg circuit

0 Answers   Syncom,

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