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4300 Series Ancillary Cabinets Installation and Operation Manual
12.6 Join the 431M Cabinet with the UPS
The 431M is equipped with four 16 mm mating holes located on the front and back of the left and right
sides of the cabinet.
DANGER: HAZARDOUS VOLTAGES MAY EXIST.
Verify all power is removed from the UPS and power cables prior connecting the power cables to the
Auxiliary Cabinet terminals, Maintenance Bypass Switch terminals, or UPS terminals.
1. Remove the top and bottom 431M Cabinet Front panels.
2. Remove the cable access plate at the lower-front right side of the 431M Cabinet. (See Figure 12-5)
3. Remove the cable access plate at the lower-front left side of the UPS Cabinet.
4. Position the 431M cabinet to the left of and adjacent to the UPS Cabinet.
5. Placethe431Mbaseovertheooranchorbolts(ifavailable).(Figure12.-4)
6. Align the four 14 mm bolt holes on the right side of the 431M Cabinet with the matching four 16 mm
bolt holes on the left side of the UPS Cabinet.
7. Bolt the cabinets together with four 3/8-16 in. x 2 in. long bolts.
8. Secure 431M base anchor bolts.
9. Select the power cables per Tables 12-1, 12-2, and 12-3.
10. Run the power cables from UPS power terminals TB1 to 431M Cabinet per Figure 12-6.
11. Connect 431M Utility Bus Terminals (Figure 12-2 #9A) to the Utility Power
12. Connect 431M Load Bus Terminals (Figure 12-2 #9D) per Figure 6.
13. Connect 431M UPS IN Bus Terminals (Figure 12-2 #9B) per Figure 6.
14. Connect 431M UPS OUT Bus Terminals (Figure 12-2 #9C) per Figure 6.
15. Connect the Neutral cables to the Neutral Bus stub, Figure 12-2 #16 and Figure 12-6.
16. Connect the Mechanical Interlock Solenoid power plug, TB1 P-1(Figure 12-2 #18) to the UPS 24V
power terminal jack J1 in the UPS .
17. Connect the Ground wires (#2 AWG or better) to the ground bus, Figure 12-2 #17.
18. Verify the connections are correct.
19. Install the 431M top and bottom Dead Fronts.
Figure 12-6 - Power Cabling Between Auxiliary Cabinet, MBS, and UPS
Utility Power
L1
L2
L3
N
Critical Load
N
L1
L2
L3
431M
NEUTRAL
N N N N
UPS OUT UPS IN
A
B
C
A
B
C
UTILITY
IN
LOAD IN
A
B
C
A
B
C
4300 Series
UPS
TB1
H1
H2
H3
N
N
L1
L2
L3
(UPS OUT) (UPS IN)
+
-
TB1
1 2 3 4 5 6 7 8
24V DC PCB
P1
J1
CNEPO-1
CNEPO-2