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Anonymous Poster

formula to determine insulation resistance

09/16/2008 11:31 PM

What is formula to determine insulation resistance of an elctric motor when Voltage and current is given.
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PWSlack
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#1

Re: Rajendar

09/17/2008 7:24 AM

It is determined by testing, not by calculation, and the voltage and current information is not relevant.

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jmd
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#2

Re: formula to determine insulation resistance

09/19/2008 8:25 AM

Or maybe the question was, how to calculate the minimum acceptable value?

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Anonymous Poster
#3
In reply to #2

Re: formula to determine insulation resistance

09/20/2008 2:14 AM

yes Sir, the question is how to determine the minimum acceptable insulation resistance value in case of HV and LV equipments. Thanks
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Sparkstation
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#4

Re: formula to determine insulation resistance

09/20/2008 6:59 AM

Hello "Guest"

The Formula used is the basic "Ohms Law", just the same "Ohms Law" as always.

Trust you now feel assisted.

Kind Regards....

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Anonymous Poster
#5
In reply to #4

Re: formula to determine insulation resistance

05/07/2010 4:30 AM

IR=Klog(D/d) x L/1000

k=2000 for PVC

=50,000 for EPR

=100,000 for XLPE

D=dia. over insulation

d= dia. under insulation

L=lenght of wire
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