Answer / niti

alternator star point should be given to double earth.

Answer / vinod.c

Yes,this is correct Answer.Ther is 2 Neutral Earthing.
And also 1 Body Earthing is necessary.

Answer / gunasekaran

resistance earthing

Answer / saravanan

if the 3 phase supply is balanced(ir+iy+ib=0) that time only
you earthed the mid point of earth else you must use some
proper earthing methods like resistance earthing,plate
earthing like that...

Answer / ram singh

DG Neutral earthing should be connected after neutral
contactor connected towards load side because to avoide
neutral neutral failure to load side which is danger incase
of neutral contactor contact tips carbonise or breakes.
Second reason is to balance load during synchronising.
Third reason is to install REF.

Answer / ashwini

resistance earthing

WE HAVE A LOAD OF 55KW MOTOR ITS VOLTS 380 3PH AND ITS TAKING 100AMPS (ITS FULL LOAD IS 105AMPS)AND ITS CABLE IS 4CX50SQMM ,NOW ITS GETTING ABNORMAL HEATUP IN CABLE,PLZ TELL WHY ITS HEAT-UP?(CABLE LENGTH IS 15 METERS ONLY)

10 Answers  

what do you mean by cl PS CTs? What are technical details required for it's manufacturing?

1 Answers  

* Signal transmission in sky wave propagation is due to ? a) Reforction of wave b) Reflection of wave c) Pierus through Inosphere d) None and Reason for this is????

2 Answers  

How will A Medium voltage circuit breaker(11 kV voltage level) operate under short circuit fault condition whether It is having short circuit release like Low voltage circuit breaker or relay should be given?

0 Answers  

what is the difference between brushed alternator ,brushless alternator & permanent alternator ?

1 Answers  

I have a relay contact rated at 220v dc which is supplied with a 24vdc from the panel,for it to trip the dampers(24vdc).What if the application of the relay changes so that it should work at its rated 220vdc then will it work at 24vdc supply given or any other consideration needs to be taken .....

0 Answers  

how netral CT is selected (including its details specification)

8 Answers   ABB, ABC, dbpl, Mecon, Shree Engineering, Tapasya Transformers,

In India,we use 230V,50HZ,where as many other countries use 110V,60HZ what r d advantages and disadvantages of each of them?

8 Answers   GVK,

How electrical power is generated by an A.C Generator ?

1 Answers   Hindalco,

why a three phase induction motor cannot run at synchronous speed ?

7 Answers   RUET,

what is per unit calculation?looking for simple and strong explanation thk u

0 Answers  

what is the full form of ka (100A mccb KA)

1 Answers