What is the Polarisation index value ? (pi value)and
simple definition of polarisation index ?
- 15 Answers
- 80876 Views
- Essar, I also Faced
- E-Mail Answers
Answer Posted / t k shaw
Polarization Index Test ( PI ) – The PI test measures the
ability of the insulation to absorb voltage over a period
of time. This gives and indication of the overall
insulation quality of the individual pieces of insulation
in the transformer. This test is usually performed in
conjunction with the Megger Test.It is measured as ratio of
insulation resistance (IR)for 10 minutes to insulation
resistance for 1 minute.
| Is This Answer Correct ? | 92 Yes | 6 No |
Post New Answer View All Answers
I have 2500KVA transformer delta/star,13.8KV/380V provided with LV 4000A breaker. Already I have 2300KW motor feeder with a full load 90%. Is it possible to connect another 1600A from that breaker? If so how the calculation is done?
what will happen if synchronous machine rotor fed from single phase ac supply
please send the IS strandard for electrical to sakthi_murugan86@yahoo.co.in
Pls mail me utility & Dg related question with answer
Do you need any help with FEWA Electrical Supervisor exams?
Please nybody say, weather the result of Bharat Oman is declared or not? Probable date of declare???????
i m in need of current rating chart of heavy duty pvc/xlpe, cu/al cables. can somebody provide me? if yes, plz send me at ashish_patel111@yahoo.com
HAI SENT HPCL APTITUDE QUESTION PAPER, MY EMAIL ID IS angus_eee04@rediffmail.com,angus_eee04@yahoo.com
DRAW ACIRCUIT DIAGRAM OF 100 KVA 415V/55-0-55V DELTA TO STAR TRANSFORMER
what is the condition for YnD11
Can anybody post questions asked in Engineers India Limited Interview? Thanks in advance.
please send 5yearje solved papers on my email himmatsinghnathawat@gmail.com
send me any model test paper of clerical post of state bank of india.......
hi plz send me reliance placement papers..i.e electrical technical papers that have been asked in reliance test.
sir pls send the je exam - 2008 and other model question papers..
