Power Shield UPS Knowledge Base

What are the different disturbances and what are their causes?

in FAQ

Power Failure – Total loss of power caused by lightning strikes, downed power lines and accidents.
Power Sag – Short term low voltage caused by the startup of large loads, utility switching, or utility equipment failure. AS well as crashes, sags can damage hardware.
Power Surge – Short term high voltage caused by heavy equipment being turned off or by utility switching. This too can damage computer hardware.