Interested to Buy Any Domain ? << Click Here >> for more details...
What is the PI test stand for transformer and what is the
producer to do this test?
- 1 Answers
- 5802 Views
- I also Faced
- E-Mail Answers
Answer Posted / k.prakashchandra
PI means 'polarisation index'.It is the ratio of megger
values at 10 th minute and that at first minute.This value
should be more than 1 and more than 1.5 is preferred.For
this motorised megger is required.For appx value, if you do
not have such megger ,values after 60 seconds and 10
seconds may also be considered.
| Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
why impudance relay used for medium transmission power system? why not others?
can any tell me why slope 40% and 80% is calculated in differential protection?
What willbe change in programming when we use 5/3 solenoid inplace of 5/2 in operating of a cylinder?
How to decide whether A / B / C / D curve type MCB should be used?
How to derive detailed design of Suitable bus Bar for 100A for 6.6KV?
An impedance of 100 ohms resistance and an unknown inductance is connected across the capacitor. The resulting impedance is a pure resistance of 500 ohms ifω = 10^5 rad/sec. calculate the values of inductor and capacitor.
How can we calculate ac current from the given DC current when AC voltage is given?
Whata are the types of Cables?
sir, Is their any measuring unit of knoking? please explian?
What are the reasons for the parallel operation of transformers?
What is the difference between the relay and the circuit breaker?
What are the applications of different multistage amplifiers?Plz also write advantages of these amplifiers? Thaaaaaaaaanx
how to calculate the formula of cable size if motor kw is given
nwhat are the main Components of servo motor?
How to perform a DC resistance test In Alternator and their proceduces?
