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What is the Polarisation index value ? (pi value)and
simple definition of polarisation index ?
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Answer Posted / ricks
Its a capacity of insulation can withstand with volatge.
gives insulation healthiness,cleaness, moisture contains..
PI is taken as ratio of IR (10min)/IR(1 min).
SHOULD BE >2
1.5- HAZARDOUS
PI = 1+ (Ip/Is+Ir)
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