Automated voltage regulation (AVR): Also known as line-interactive topology, this is the more advanced method of electricity administration that makes use of a little transformer as being a buffer to compensate for power dips and surges without having relying on the battery. Greenback for dollar, we can easily't endorse CyberPower https://keegankmmjh.ageeksblog.com/32855506/the-best-side-of-ups-cleanline