What is the Polarisation index value ? (pi value)and
simple definition of polarisation index ?

Answer Posted / s.ali

Polarisation or PI is the ratio of 10 minutes meggar value
to that of 1 minute.This value must not be less than 1, if
it is so then equipment like motor or transformer shuld not
be put into service for operation.

Is This Answer Correct ?    8 Yes 2 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What is the phase relationship between the primary and secondary voltages of a transformer?

588


battery capacity use of made?

2095


can we use engine degreaser for electrical motors?

1288


Phase control and integral control are used for?

1770


list the type of vfd? wich is sutable for heating kiln?

1595






How is the percentage impedence of a transformer fixed at design stage???

1493


What are the types of the glands and difference between single and double compression type of cable Glands.

1608


Explain how you can give the overload setting to any Motor Protection Relay for a HT motors with formula and example?

1642


How to calculate multiplication factor in kva example 500kva ans pls ?

1374


which pump used in WTP explain the function of VFD how to dtermine capacitorbank of capacity one plant

1465


where reactive power is used

1552


Why Neutral Isolation is required?

1815


What is the difference IN MCCB's between thermal magnetic and electronic tripping system ?

1536


State thevenin’s theorem?

656


how wecalculate breaking capcity of acb mcb mccb .explain with example

1393