American Power Conversion MatrixTM UPS user manual

This screen shows selected UPS self test function choice. The self test determines the readiness of the UPS to supply power to the load in the event of utility failure. The benefit of this test is that the user is warned of conditions that could otherwise cause unexpectedly short run times.

λON - UPS conducts self test immediately upon start-up.

λOFF - Self test function is disabled.

λ7 day - The UPS conducts the self test automatically upon start-up and once every 7 days thereafter.

λ14 day - The UPS conducts the self test automatically upon start-up and once every 14 days thereafter.

This screen shows the selected utility failure sensitivity function choice. The UPS can be set to automatically adapt to utility service conditions where extreme voltage distortion is present or where severe rapid voltage excursions occur. Such conditions are typically created by inexpensive fuel generators or by unusually long branch circuits burdened by heavy cyclic loads.

Nearby arc welding or heavy industry equipment can also affect the quality of service.

λAUTO - UPS automatically adapts to utility service quality. This adaptive mode is selected to reduce frequent transfers to on-battery operation which could unnecessarily exercise the battery, shortening its life. Normally, the UPS provides load voltage regulation within a narrow band. In response to rapid and frequent utility voltage fluctuations, the UPS relaxes the load voltage regulation. This relaxed regulation band remains within the bounds recommended by telecommunications and computer manufacturers.

See the Specifications section of the manual for the regulation ratings.

λHigh - UPS remains sensitive to aberrant line voltages. Load voltage regulation stays within the narrow band.

λLow or Medium - UPS is insensitive to aberrant line voltages. The load voltage regulation is relaxed to a widened band.

The voltage at which the UPS will transfer to on-battery operation is adjustable for service conditions where extremely high utility voltages persist and it is known that the loads can withstand the elevated voltage.

λWhen configured for operation from a 208V service, the transfer voltage choices are 240V, 244V, 248V, and 252V.

λWhen configured for operation from a 240V service, the transfer voltage choices are 276V, 264V, 253V, and 282V.

The minimum interval between activation of the UPS’s audible, visual and signalled low battery alarm warnings and shut down of the UPS due to battery capacity exhaustion is user settable.

λThe function choices are 2, 5, 7, and 10 minutes.

The UPS may be set to shut down before usable battery capacity is spent. This conserves battery capacity in the event of successive outages.

λThe function choices for the amount of on-battery run time to be conserved are NO (none) and 2, 5, and 8 minutes.