American Power Conversion 120-160kW 3.4 Economy Mode

Operation
990-4036
User Guide APC Silcon 120-160kW 400V UPS 21
3.4 Economy Mode
When the UPS is running in Economy Mode, the load will be supplied directly from mains and
output voltages are UPS monitored. In the event of a mains disruption, the UPS will switch to
battery mode without affecting the load.
Prior to switching to bypass mode, leave the system running in normal mode for 8-10 hours to
charge batteries to full capacity.
To keep batteries fully charged, UPS is pre-programmed to switch back to normal operation
whenever necessary.
Economy Mode not available for parallel configurations.
At start-up, the system will at first go into normal operation to ensure a fully charged battery,
and it will then switch into bypass after the programmed time (8-10 hours).
NOTICE!
Check cable dimensions as input power factor is not corrected with UPS running in Economy
Mode.