Johny wrote:Hmmm. 100Hz is no higher speed than a 2 pole. Too harsh!woody wrote:Also: please note that ABB will not cover warranty if motor is run at 100Hz as intended by customer. <- Harsh but fair
I agree and I expect that's a mistake. I suspect the 4-pole quote was done by editing the 2-pole quote. For the 2-pole, I mentioned wanting it balanced for 6000 rpm and I assume they translated that to 100 Hz and forgot it would be 200 Hz for the 4-pole.
It's fair for the 2-pole, but get back to Dave Gayner to have it removed or changed to 200 Hz for the 4-pole. But lets face it, that aint the only thing we plan to do that will violate the warranty.
Many thanks Johny (via email from Woody), for this interesting page on insulation temperature rating and lifetime.
It helped us decide not to bother about class H insulation.