IE3 vs IE4 motors - price, availability
IE3 vs IE4 motors - price, availability
(OP)
I'm writing a tender that wil include a handfull of motors, 3-11kW that will run practically continuosly. My question is if it makes sense to specify IE4 motors (default is IE3). Is the cost difference significant, are there concerns in swapping one for the other?
So if the supplier would normally work with IE3, if we demand IE4 they could not deliver.
This is for Germany where AFAIK the better efficiency classes have less market penetration than in the US.
So if the supplier would normally work with IE3, if we demand IE4 they could not deliver.
This is for Germany where AFAIK the better efficiency classes have less market penetration than in the US.





RE: IE3 vs IE4 motors - price, availability
RE: IE3 vs IE4 motors - price, availability
finally got hold of a likely supplier, they where pretty unenthusiastic bc. of added price.
RE: IE3 vs IE4 motors - price, availability
RE: IE3 vs IE4 motors - price, availability
After some more digging it turns out that ABB and Siemens don't deliver IE4 motors in this size with the ex protection required (far larger size would be different).
Just like micalbranch said.