UPS · Uninterruptible Power Supply
System (battery or flywheel backed) that maintains clean power through grid disturbances and bridges to generators.
Power system that keeps IT load energized through grid sags and outages until backup generation starts.
Also written as: Uninterruptible Power Supply
Current numbers
10–30 sRide-through time Revterra's comparison table gives for other flywheel UPS products
~20% (early screening trigger)UPS cell impedance rise over baseline that triggers investigation and the prescribed capacity test: a screen, not a failure prediction
~50% / 2–3%estimated cut in battery capacity and in double-conversion loss when distributed storage replaces duplicated central UPS batteries (SemiAnalysis)