Check of the UPS runtime

Anonymous user · ‎2021-06-28

I would like to check of the UPS BackUPS CS 500 (BK500EI) runtime by halfload. If it is correct to check runtime with 250W light bulb, not with 150W light bulb? I think that 250W (PF=1) for light bulb is the same 150W (PF=0.7) for computer.

Anonymous user · ‎2021-06-28

Power factor doesn't matter for the most part for runtime test. You just want the load to simulate what your expected backup load is using in watts.

If you're doing a general UPS calibration, charge 24 hours, then use resistive load (like light bulbs) with 30-50% the wattage rating of UPS and let it run until it shuts off on its own.

See Answer In Context

Anonymous user · ‎2021-06-28

A runtime chart is available for your UPS. It shows you what runtime you can expect at a few different load amounts.

http://www.apc.com/products/runtime_for_extendedruntime.cfm?upsfamily=17

Anonymous user · ‎2021-06-28

Power factor doesn't matter for the most part for runtime test. You just want the load to simulate what your expected backup load is using in watts.

If you're doing a general UPS calibration, charge 24 hours, then use resistive load (like light bulbs) with 30-50% the wattage rating of UPS and let it run until it shuts off on its own.