Thanks everyone! I found my answers in IEC 60034. The exact answers is based on the fact that the motor is indirect cooled and not direct cooled. So this way, the maximal temp rise can be ajusted if ambient temp is lower then 40degc but higher then 0.
Thanks for the answer Itsmoked. That's what I thought but I still find it confusing. Why don't just say on nameplate: max temp 120degC ..instead of 80K permissible temp rise. Anyway, I'll keep in mind that under 40degC ambient temp, temp limit is set to 120K.
Do you have a standard or a norms...
Thank you for your answers but I'm still not sure I got my answer..
My permissible temperature rise is 80K. The standard ambiant tempersture is 40degC. So 80+40=120 degC. So i should avoid exceeding 120degC based on 40degC ambient temperature. But if my ambient temperature is 20degC, does my...
Hello,
Our Sag mill motor is rated 1500HP with 4000V, 212A and 0.8 lead power factor, insulation class F and permissible temperature rise 80K. Our motor is actually used at 112% of nominal charge (1320kW, 0.943 lead P.F., 190A, 4220V). We want to know if we can still increase the load without...
