Do you know of any manufactures of High On/Off Cycle Motors, with a web site.
It isn't good. It won't destroy it. The motor won't last as long as normal.
It I got it right you are turning it on/off every 28.8 seconds which isn't very fast most motors should handle this.But What are you doing that requires this cycle rate?
So you've got a lot of 480-vac machines cycling every minute and you're wondering if you can get a motor that cycles every 30 seconds? Sure. It is just part of the specs. There's a much higher amperage on start up and all of your machines do that frequently, so they must dissipate heat faster than some consumer grade product or anything not spec'd for frequent cycling. They have to have larger fins, cooling fans, or the vendor just derates some larger framed motor. Sure sounds like your vendor screwed up and is trying to cover his *** after the fact. How could he possibly think you'd want to be surprised by the delivery of a different motor? Sure, call out an alternative in the BID process. But DELIVER what was ordered, unless you've got an approved change order. The lack of reversibility sounds like yet another deviation from specifications and one that is very obviously less flexible, less desireable and non-compliant with the purchase order.
