Toshiba operation manual Join the 431A Cabinet with the 431M, Series

10.7Join the 431A Cabinet with the 431M

The Toshiba Auxiliary Cabinet (431A) is equipped with four 14 mm mating holes located on the front and back of the left and right sides of the cabinet.

1.Remove the top and bottom 431A Front panels.

2.Remove the cable access plate at the lower-front right side of the 431A Cabinet. (See Figure 10-7)

3.Remove the cable access plate at the lower-front left side of the 431M Cabinet.

4.Position the 431A cabinet to the left of and adjacent to the 431M Cabinet.

5.Align the four 14 mm bolt holes on the right side of the 431A Cabinet with the matching four 14 mm bolt holes on the left side of the 431M Cabinet.

6.Bolt the cabinets together with four 3/8-16 in. x 2 in. long bolts.

7.Select the power cables per Table 10.3.

•Cable size for the UTILITY and LOAD terminals are dependant on the Input/Output Voltages to the transformers.

•The UPS Input/Output cables will be the same size: 3Phase /4Wire 208/120V.

8.Run the power cables from 431M power terminals TB1 to 431A power terminals TB1 per Figure 10-8.

9.Run the appropriately sized power cables from 431A TB2 to the Utility and Load per Figure 10-8.

Figure 10.7 - 431A Cable

Access Plate

Utility Power

L1

L2

L3

N

1

431A

TB1

(From Utility) (To UPS IN)

H1 H2 H3 N N L1 L2 L3

(Optional)

TB2

(From UPS OUT) (To LOAD)

H1 H2 H3 N N L1 L2 L3

(Optional) N

L1

L2

L3

Critical Load

431M

A		UPSIN	A
C UTILITYIN			C
B			B
A	LOADIN	OUTUPS	A
B			B
C			C

NEUTRAL

N N N N

4300 Series

UPS

H1	IN)
H2
	(UPS
H3
N		TB1
N	OUT)
L1
L2	(UPS
L3
+
-

Figure 10-8 - Power Cabling Between Auxiliary Cabinet, MBS, and UPS

30 4300 Series Ancillary Cabinets Installation and Operation Manual