Cloving,
It depends on the UPS system. Most UPS systems are designed to switch to static bypass when the load exceeds 103%-125% (assuming bypass is available). I have also seen UPS systems current limit their rectifier (DC buss voltage drops) when overloaded and this drains the battery until...
Hi, I am new to the group and found this site searching for info on drives and well pumps. I provide power quality and harmonics testing and am working on a site with two 60 hp submersible well pumps on 6-pulse VFD's. The client is having problems with fiber optic communication interfaces that...