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Initial Start-up and Phase Check
990-1401
Installation Guide APC BC300 Series 40kW 208/450/480V UPS 31
4.0 Initial Start-up and Phase Check
After installing the unit, use this section to perform the initial start-up and the phase check for
the Maintenance Bypass Panel.
4.1 Initial Start-up and Phase Check (External Batteries)
1. Ensure that the external battery breaker for the battery system is set to “OFF”.
2. Turn the pre-charge/discharge switch to the “pre-charge” position and hold it until the LED
turns off.
3. Switch the battery breaker “ON”. The UPS display should show “System type xxkVA xxxV”.
4. Within 20 seconds, the display should show **Stand-by** and an audible alarm should
sound.
5. At utility input, switch on the input power to the Maintenance Bypass Panel.
6. At the Maintenance Bypass Panel, switch the UPS AC disconnect switch “ON”.
7. Check the phase rotation at the service panel and the unit. The unit will not start if the
phase rotation is incorrect. The phase rotation must be A, B, C and clockwise.
8. When the audible alarm stops, press the green “ON” button located inside the UPS front
door. The display will show “Normal operation load power xx%”.
NOTICE!
One or more alarms may occur. If the alarm(s) persists for more than 20 seconds, refer to the
“Alarms” section of the User Guide. If the unit activates a “battery monitor alarm”, you should set
the user parameter “battery monitor reset” to “ON”.