Motor Insulation Class
Motor Insulation Class
(OP)
Hello,
I am by no means an expert with electric motors, so I have a question about insulation class. I have seen motors with insulation class B5 and F4 on the nameplate, and I was wondering what the 5 and 4 mean. I can't seem to find an answer anywhere so maybe this is something that is specific to a manufacturer, but I am not sure. Any help would be appreciated!
Thanks!
I am by no means an expert with electric motors, so I have a question about insulation class. I have seen motors with insulation class B5 and F4 on the nameplate, and I was wondering what the 5 and 4 mean. I can't seem to find an answer anywhere so maybe this is something that is specific to a manufacturer, but I am not sure. Any help would be appreciated!
Thanks!





RE: Motor Insulation Class
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(2B)+(2B)' ?
RE: Motor Insulation Class
If i am not mistaken. B5 would be a motor mounting type.
As B5 is flange mounted and B3 is a foot mounted
I'm not familiar with F4 though. This should somehow refers to the number of pole. As motor models usually have this.
But if you are sure that this was printed as insulation class on the nameplate. Then i am with pete, its a manufacturer's specific.
RE: Motor Insulation Class
RE: Motor Insulation Class