In case your voltage amounts are unstable (ie: power stays on, but the particular voltage degree varies a lot from the 220V conventional), then I think that's the kind of state of affairs in which an AVR is useful. Could it be legitimate that surge protectors hinder general performance ? https://proudpiragroup00063.livebloggs.com/40186749/a-review-of-uninterruptible-power-supply-cyberpower