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I n s t a l l a t i o n 3 - 3 7
2-Mb/s Remote Peripheral Equipment Appendix 1 to 553-2741-200
C h a r t 3 - 4 ( c o n t i n u e d )
Expansion QBL24 battery unit installation
S t e p P r o c e d u r e
8 Remove plug from top hole on the right side of the main QBL24
battery unit (Figure 2-9)
9 Remove lock nut from the 90° elbow on the end of the flexible
conduit containing wiring from the expansion QBL24 unit.
10 Insert the wires and the 90° elbow in the top hole on the right of
the existing QBL24 battery unit (Figure 2-9).
11 Insert the wires through the lock nut and secure elbow to cabinet.
12 Connect wiring from expansion QBL24 battery unit to the main
QBL24 unit as follows (Figure 2-9):
• Connect the green to lug 2 at the front of the unit.
• Connect the black wire to terminal 1 of terminal strip W1.
• Connect the red wire to terminal 5 of TB1.
13 Install covers on both QBL24 battery units.
Note:
Do not install cover on main QBL24 if battery cells
have not been installed in that unit.
14 Perform this step only if the expansion QBL24 battery unit is
added to a main QBL24 unit previously connected to an operating
cabinet.
a) Set the AC BRKR or the AC POWER breaker on the -48 V
rectifier to ON.
b) Set the DC BRKR breaker on the main QBL24 battery unit to
ON.
c) Set the DC BRKR breaker on the expansion QBL24 unit to ON.