Sep 10, 2007 #1 mbailey Mechanical Jan 4, 2002 33 Can anyone tell me how the temperature correction factors are derived for correcting resistance to 25C in an electric motor? thanks, mb
Can anyone tell me how the temperature correction factors are derived for correcting resistance to 25C in an electric motor? thanks, mb
Sep 10, 2007 #2 edison123 Electrical Oct 23, 2002 4,476 Assuming it is a copper winding, the resistance temperature coefficient is 1/234.5 per deg C at 0 deg C. R2 = (R1)*(234.5+T2)/(234.5+T1) Where R1 is the known (or measured) resistance at temperature T1 deg C T2 is the temperature in deg C for which you want to know the new resistance R2 *Even inside a hard-boiled egg, there is a golden heart!!!* Upvote 0 Downvote
Assuming it is a copper winding, the resistance temperature coefficient is 1/234.5 per deg C at 0 deg C. R2 = (R1)*(234.5+T2)/(234.5+T1) Where R1 is the known (or measured) resistance at temperature T1 deg C T2 is the temperature in deg C for which you want to know the new resistance R2 *Even inside a hard-boiled egg, there is a golden heart!!!*
Sep 11, 2007 Thread starter #3 mbailey Mechanical Jan 4, 2002 33 Thanks edison, Now the next question. Is there a temperature correction factor that can be applied to the viscosity of varnish in order to standardize the measurements? If so, do you know what it might be? Thnaks, mb Upvote 0 Downvote
Thanks edison, Now the next question. Is there a temperature correction factor that can be applied to the viscosity of varnish in order to standardize the measurements? If so, do you know what it might be? Thnaks, mb
