Running electric motors in high ambient temps
Running electric motors in high ambient temps
(OP)
I have a situation in which I am required to run small 3-phase motors (0.18KW; 0.37KW and 0.09KW) in an enclosed space at 90 celsius ambient temp.
I understand that the motor efficiency will decrease drastically. We have used Class F insulation motors in the past. The loads are light, and there are very infrequent starts/stops.
Can anyone offer comment on the expected reliability of motors in this environment?
Should we used forced cooling fans to get some airflow over the windings?
Should we specify Class H insulation?
Any advise welcome. Thanks!
I understand that the motor efficiency will decrease drastically. We have used Class F insulation motors in the past. The loads are light, and there are very infrequent starts/stops.
Can anyone offer comment on the expected reliability of motors in this environment?
Should we used forced cooling fans to get some airflow over the windings?
Should we specify Class H insulation?
Any advise welcome. Thanks!
Lester Milton
Telford, Shropshire, UK





RE: Running electric motors in high ambient temps
RE: Running electric motors in high ambient temps
Class H insulation is the choice all the time!
RE: Running electric motors in high ambient temps
Also, lubricants may need review for the applicaton.
RE: Running electric motors in high ambient temps
RE: Running electric motors in high ambient temps
Lester Milton
Telford, Shropshire, UK