Ride-through
Carrying a load through a brief power dip, source transfer or loss of coolant flow on stored energy or thermal margin (BBU, UPS, BESS, coolant inertia). Grid ride-through, staying connected to the grid, is a different requirement (Chapter 4.10).
In other contexts, Ride-through also means For a large computing load: staying connected to the grid through a normally cleared voltage sag, then restoring its load, instead of transferring to backup. ERCOT NOGRR282 and SPP's large-load rules are in force; NERC's CLO standards passed final ballot. (Parts 1.2, 3.2, 4.2, 4.3, 4.4, 4.8, 4.10, 11.10, 12.1, 13.6, 13.10, 14.8, 14.11, 14.13, 16.1, 16.3, 16.5, A, E, F, G).
Current numbers
10–30 sRide-through time Revterra's comparison table gives for other flywheel UPS products
400 J/GPUNVIDIA Vera Rubin rack-level energy storage normalized per GPU; vendor-stated power-smoothing envelope, not facility ride-through
75 MWERCOT large-load threshold: Large Load Interconnection Study and NOGRR282 ride-through scope