UPS reports overvoltage - should I be concerned?
Posted on 2010-11-29
I have an APC Smart-UPS supplying an SBS server. The PowerChute software has thrown up the error "The UPS has experienced a high input voltage more frequently than normal".
The electrical spur supplying the UPS is new, installed last week.
Looking at the graph in the PowerChute console for the last 24hrs, the input voltage has mostly been between 249 and 252 with a single spike of 255. In the last few hours, it's fallen to between 240 and 243 (The domestic supply in the UK is 240V).
I know how to increase the High Voltage limit from it's current limit of 253V, but I'm not sure whether that would be just ignoring the problem.
Should be concerned about the quality of the electrical supply? And is there any risk to the server?