Network & Power

UPS sizing

Total real power + runtime target → recommended UPS VA rating.

List the loads in the rack (Q-SYS Core, switches, PDUs, network gear), enter their wattage, set your runtime target, and get the minimum and recommended VA. Includes 30% headroom for battery aging.

loads

device

count

watts

Runtime targetminutes

How long the load needs to stay up after a power cut. Typical: 5-15 min for graceful shutdown.

Total real power

350W

apparent power: 412 VA (PF 0.85)

Recommended UPS rating

535VA

Includes 30% headroom for battery aging. Pick a stock unit at or above this.

Battery capacity needed

6176VA·min

Cross-reference with the UPS runtime curve for your target load %. Most units show this in their datasheet.

load UPSes to 50-70% — runtime is much better than at 90%+
online (double-conversion) UPSes are quieter on the AV chain than line-interactive
add network management card for shutdown signalling to PCs / NAS

Need this math wired into a real system? We do that for a living.

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