How Earthing is prevents shock?Explain

4 Answers  

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how can calculate static 3phase 4wire CT & PT operated energy meter constant when calibrating using refference meter suppose we have 11kv/110v PT and 30/5A CT, the meter constant is 160imp/kwh, where meter is showing MW energy? give me solution which constant i feed in my refference meter for calibration of energy meter?

3 Answers  

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at the time of starting back emf of a motor is zero.so how can it will start to run??

1 Answers  

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What happen in ups if phase reverse?

0 Answers  

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HELLO EVERYONE, I RECENTLY HAVE FOUND ONE PROBLEM, I WAS TAKING NO LOAD TRIAL OF AN HT MOTOR 920 MOTOR , 1440 RPM , 6.6 KV, WITH AUTO TRANSFORMER. AT 450 V, LOAD WAS 40 AMP AND SPEED WAS 250 RPM. BUT AS WE INCREASE VOLTAGE FROM 450 TO 480V, LOAD BECOME 41 AND SPEED REDUCED TO SOME RPM . SO WHICH PHENOMENON ACTED HERE FOR REDUCING SPEED.?? AND IS IT HAPPENING ALWAYS OR IT IS RARE? I ALSO HAVE FACED SUCH PROBLEM WITH FEW LT MOTOR ALSO.

0 Answers  

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0.5,1,1.5,2.5,4.0.6.0,10,16 square mm electrical wires how much take maximum current in 50htz

0 Answers   SoftLogic,

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what is the pi test for current transformer?

1 Answers  

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IN 500 KVA TRANSFORMER 11KV/415 VOLTS HOW TO CALCULATE THE HT CABLE SIZE AND LT CABLE SIZE FROM TRANSFORMER TO LT PANNEL. AND HOW MANY MAINSWITCHES OR MCBS WITH RATING ARE TO BE PROVIDED

2 Answers   BSF,

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What are the different types of dams?

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As per IS why should the control be taken only from R phase, why not from B or Y phase??!!

2 Answers  

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what shall be no load voltage of 132/33 kV transformer ? is it 33 kv of 34.5 kV

0 Answers  

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How is efficiency of DG set calculated? At many places I found the efficiency to be mentioned in percentage. But at some other places I found kWH/ litres. I want to know how dimensionless percentage value is arrived at?

0 Answers   ADS Spirits,

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