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38 Installation Guide APC BC300 Series 10kW 208/450/480V UPS
990-1378
Start-up and Shutdown Procedure
6.0 Start-up and Shutdown Procedure
6.1 Start-up from Maintenance Bypass
This section contains instructions on how to start the UPS from maintenance bypass. The steps
in this procedure apply to units with an APC-supplied Maintenance Bypass Panel.
1. Make sure that the following switches are in the following positions:
The UPS AC disconnect switch should be “OFF”.
The UPS bypass switch should be on “LINE”.
The battery breaker should be “OFF”. (External battery units)
2. Switch the UPS AC disconnect switch “ON”. The UPS display should show “System type
xxkVA xxxV”.
3. Within 20 seconds, the UPS display should show **Stand-by** and an audible alarm should
sound.
4. If the unit has external batteries:
a. Ensure that the external battery breaker for the battery system is set to “OFF”.
b. Open the DC fuse holder (F001, F002, F003). For location of DC fuse
holder, see Component Overview illustration.
c. Place the DC fuses in the fuse holder. Make sure that the red tab on the fuse faces the
top of the fuse holder. Make sure that the fuse locking tabs are aligned in the slots on
the fuse holder.
d. Using an open palm, close the fuse holder.
e. Turn the pre-charge/discharge switch to the “pre-charge” position and keep it this
position until the LED turns off.
f. Switch the battery breaker “ON”.
5. Press the green “on” button located inside the front door of the UPS. The UPS display
should show “Normal operation load power xx%”.
6. For internal battery units, put the DC fuses (F001, F002, F003) into the DC fuse holder.
7. Using an open palm, close the fuse holder.
8. Program the unit into static bypass operation:
a. Press to access the user parameters.
b. Press the or key until the display shows “Bypass operation: OFF”.
c. Press to turn static bypass operation on. The display should show “Bypass
operation”.
9. Set the UPS bypass switch to “UPS”.
10. Program the unit to normal operation:
a. Press to access the user parameters.
b. Press the or key until the display shows “Bypass operation: ON”.
c. Press to turn static bypass operation off. The display should show “Normal
operation load power xx%”.