Thanks NIck. What the generator people are telling us is the genset only see the UPS as the load and not what the UPS sees as a load. Therefore it is mainly a capatiance load only, which drives the voltage higher. What they have come up with is to remove the filter caps, and hope the genset will not overpower the UPS. We shall see in a couple of weeks when we retest. Also, I found something, that supported the tech's statement. We have a confrence call tomorrow , and we will see what the engineers that recommended this genset have to say about it. Thanks for the input.
