motor cooling and test

[arunavac]

Please explain the difference between IC511 & IC 411 cooling method as per IEC 60034-6.Is heat run test of motor same as temp rise test?

 

[Jraef]

Please explain the difference between IC511 & IC 411 cooling method as per IEC 60034-6.Is heat run test of motor same as temp rise test?

Mike Holt's websites are mainly intended for North American audiences in that it is based on issues related to the National Electric Code and Canadian Electric Code. Nothing wrong with posting your question here, but be patient in looking for an answer as most of us are not familiar with IEC specs.