Answer / virendra joshi

Open the cable from both the end connect the Armour to
earth do the magger of RY, YB, BR respectively Then again
all three phases with respectively, the infinite is
preferable But if is near to zero then it is a matter of
worry.

Answer / johnmathews

Between cable(r,y,b,n)and earth(Armour of the cable).
Between cables(R to y and b)Same to other cables

Answer / raihan

In additional to this we can do for RN,YN,BN and NE, if
insulation resistance is 1000Mohms or infinity it is ok

Answer / prasad.k

The working condotion of the cable,we will check with
Meggering. that we can do like this. we can do for RN,YN,BN
and NE, if
insulation resistance is 1000Mohms and above, then it is ok

Answer / m a khan

what is meggering formula ?

Answer / gunasekaran

Armour of the cable should be connected to earth if u want
take megger for R phase another 2phase are short and earthed
like wise. in this type of testing we can get exact leakage
current of the cable.b/w two phase R Y, R B,YB,YR and BR,BY

Why is it not possible to operate a star-delta transformer in parallel with delta-delta transformer?

1 Answers  

What is the most accurate way of testing ELCB?ELCB is better than RCD?

0 Answers   GECO,

Explain how you intend to work under pressure to meet up with deadline target?

0 Answers  

why rotor winding in induction motor is not earthed. normally we uses star winding in rotor .why?

3 Answers   Anglo Platinum, TATA,

Why starters are using the machines???

5 Answers   Alstom,

if the syncronous machine run at leading pf and as its field curret increased its armature current decreased is machine operate as generator or motor?

1 Answers  

What is power distribution criteria for converting single phase unbalanced residential load to 3 phase star connected balance system. Does total KW converted to 3 Phase. Means Divided by root 3.

0 Answers  

What should be the height of basement according to NBCC code?

0 Answers  

What transistor level design tools are you proficient with? What types of designs were they used on?

1 Answers   Intel, Jindal,

The armature of shunt dc motor has 0.8ohm resistance and motor is to run on 120V circuit.If motor is suddenly thrown on circuit while armature at standstill then current drawn by motor will be??Also back emf in normal running is 110V

2 Answers  

What type of motor is used inside computer CPU.

11 Answers   Bhel, TCS,

why do we prefer -48 volt instead of -24volt or -12 volt etc. ??

1 Answers