In the event your voltage amounts are unstable (ie: power stays on, but the actual voltage level differs a whole lot through the 220V normal), then I think that's the type of circumstance where an AVR is helpful. Your browser isn’t supported any longer. Update it to have the best https://bangkok-wax62467.suomiblog.com/5-simple-statements-about-uninterruptible-power-supply-definition-explained-49431847