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  1. mconroy

    UPS Excessive Load

    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...
  2. mconroy

    Could distance from VFD to pump cause problems?

    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...
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