Answer / viraj

all are used to protect electrical equipment
in normal conduction all works as close switch but in abnormal condition they become open
vcb acb and sf6 are used with relay
vcb vaccume is used for arc removal
acb air is used for arc removal
sf6 sf6 is used for arc removal
mccb molded case circuit breaker to limit current

what s the differenc between electrical &electronis , how to define them

9 Answers  

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why earthing point in the 6amps/16amps socket bigger than the remaining (Phase & Neutral)points.

1 Answers  

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hi i am aziz electrical associate engineer. i am faceing problem in acs800 vvvf drive.it is tripping wothout any alarm/fault.i cheaked all parameters and fault function of drive, all are correct as well as communication parameters.but still it is tripping (drive is tripping in running position not in starting)

1 Answers  

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What should be the value of earth resistance for an instrumentation/electronic circuit? As per which IS/IEC Code?

3 Answers   IOCL,

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when we start the tube light, then it takes initially 1100 volt, after glow it takes 120 volt?(when we give 220 volt a.c.)

3 Answers  

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what will happen if we use earthing inplace of neutral for domestic energy meter

5 Answers   Polyplex Corporation Limited,

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what is the formula to calculate voltage drop/loss on 66KV Transmission Line?

0 Answers  

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Tell the details of the precommissioning tests that are performed on distribution transformer, power cable and switchgear (11kv).

1 Answers   Reliance,

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why are the transmission lines operated at 220 kv nly... nt les dan dat...

3 Answers  

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ups battery design formula

0 Answers   Amara Raja,

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Explain the role of a car driver as one of a feedback mechanism.

0 Answers   GE,

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What is emperical relation.Name few of them which are used in electriacl engineering?

1 Answers  

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