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9.
After the internal batteries in the UPS are connected, reinstall any panels that
were removed and close the UPS doors. Refer to the UPS manual for guidance
regarding this procedure. Do not close the Battery Cabinet circuit breakers until
the display of the UPS shows the message: “Close Battery Switch”. Closing the
breakers before this may damage the UPS or blow fuses in the Battery Cabinet.
Once the Battery cabinet circuit breakers are closed the front doors of the battery
cabinet may be closed.
Terminal blocks on the –N version cabinets are disconnected by unplugging the
“powerpole” connectors in all cabinets. This requires the removal of the inner
panel by authorized personnel only.
Table 3 - Terminal Tightening Torques and Wires Sizes
BATTERY INPUT/OUTPUT TERMINAL
TIGHTENING TORQUE
WIRE SIZE
TORQUE
#2/0 - #6 AWG
120 inch-pounds
TB4 LOW VOLTAGE TERMINAL TORQUE
WIRE SIZE
TORQUE
#10 – 26 AWG
5.3 – 7.0 inch-pounds
GROUND STUD TIGHTENING TORQUE
Extended Run Time Battery Cabinet
100 inch-pounds
UPS Cabinet
55 inch-pounds
kVA Rating
Minimum Input/Output
Wire Size
Minimum Ground Wire
Size
30
#2 AWG
#8 AWG
*Wire must be rated 75°C or higher. Use copper conductors only.
