Interested to Buy Any Domain ? << Click Here >> for more details...
What is the Polarisation index value ? (pi value)and
simple definition of polarisation index ?
- 15 Answers
- 80070 Views
- Essar, I also Faced
- E-Mail Answers
Answer Posted / josephat murusura
PI is the ratio of the 10minutes megger value to that of
the 1 minute.The minimum acceptable value is 2.Any value
below 2 is not good enough for the operation of the
electrical machine[motor or transformer]& it indicates that
the winding insulation has detoriated.
| Is This Answer Correct ? | 3 Yes | 13 No |
Post New Answer View All Answers
why we used dc supply for field in dg set
How DC earth leakage currents can be reduced ?
why cable i burning without tripping. how can protect led street lights
there is an alternator 480 k.w, 400v,50hz, 4-wire running on load having leakage alternator body earthed current 38 A. is it within acceptable limit? if yes then give reference if no then how to bring within specified limit
battery capacity use of made?
Dear sir, How to calculate 3.5 core pvc aluminium armoured cable meter wise carrying amps rating.Please give the solution with a good example.
Why DG set is not installed in Terrace ??
what is an unbalance in acircuit? in a three phase 3wire circuit how an unbalance will come? in a three phase four wire system how an un balance is coming?
I want to ask that is there any relation between current denesity of copper and material purity. also is ther any standard which defines the standard current denesity of material.
What is the numerical quantity of sqcm?
How many size of cable required for a 300m long and 30kw inductive lode
how balanced in star delta connection ?
what is cogging and crawling
Could you measure voltage in series?
can u tell me the promotion from oiller to enginer
