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I run a seismic research station in S Korea with the Air Force, we have a site that has had chronic power problems, every rainstorm for several weeks we would need to drive out and reset the input power breaker. The last few times the other techs noticed arching damage in the box but could not determine if it was new or historical. Most of the power at these sites is old some as old a 10 years. The last time I reset the breaker there was a very obvious arc and the breaker was locked out for later replacement. I went back out with a new breaker box with Square D 20A GFCI breakers (all we had on stock) replaced the old box with the new box and all was well, until the next storm. At this point every time there is a storm that breaker pops. The power is run from a transformer down in two phase AC one leg is plugged into the box, the output is to a ALPHA brand UPS, output of that is to a VICORE brand 110VAC to 24VDC converter then to the 24VDC input of our equipment.
Any Ideas are appreciated
Any Ideas are appreciated