re ups

When you have a system that saturates the ability to move the amps, your voltage will be forced to spike. This trips the over-voltage protection, which is a good thing in itself.

Usually this shows up in something like roof-top solar that is grid-connected. When the local consumption goes down and the excess production is attempting to flow into the grid, sometimes the cable and/or distribution transformer cannot easily handle the full amp flow forcing the voltage to rise and trip the system off, again protecting the system from damage (which is a good thing.)

Mention of capacitors for PF correction indicates that you are at or nearly at your maximum cable or system capacity. Also, over-correcting the PF will have similar results and can damage sensitive electronic equipment. Identify your amp restriction and widen the highway, (Ohm's law).

Regards, CJM