Liebert 7400 Series User Manual page 92

Chapter 4 - Optional equipment
Option Board Kit (Part no. 77000005)
4-26
Issue 2
(02/98)
6310018a.02.doc
6. Connect cables 4, 5 and 6 from the option cabinet AT1 (terminals A,
B and C) to the UPS input inductor L1 (terminals A', B'and C').
7. Connect flat cable FC22 from the option cabinet PCB 4590051L
(connector CN1) to the UPS PCB 4520073Z (connector CN9).
8. Connect flat cables FC19, FC20 and FC21 from the option cabinet
PCB 4612141 B (connectors CN1, CN2 and CN3) to the UPS PCB
4520073Z (connectors CN6, CN7 and CN8).
9. Connect wire No.80 from the option cabinet fan CN3 (1) to the UPS
fuse F12.
10. Connect wire No.82 from the option cabinet fan CN3(2) to the UPS
fuse N.
11. For UPS 200 kVA only: move wires No. 46/48 from terminal 4 to
terminal 2 of TA1 - TA2 in the UPS.
Figure 4-1 . Electrical schematic of 12 Pulse option cabinet
This completes the electrical connection of this option.
7400 Series UPS User Manual
Single Module and One plus One Systems