Place The 431B Cabinet - Toshiba 431A Installation And Operation Manual

Recommended/Maximum Wire size and Torque Requirement
UPS Maximum DC
Rating Current
30 kVA 127 Adc
50 kVA 214 Adc
Battery Cab MCCB
Capacity Rating
30 kVA 150 A
50 kVA 250 A
Go to Section 12.4
12.4

Place the 431B Cabinet

The 431B Cabinet has four mounting holes to anchor the unit after is has been set in place. See Figure
12-4. Use 1/2 in (12 mm) bolts to anchor the 431B.
Verify the Left Side Access Plate of the 431B and the corresponding Right side ac-
cess plate of the 4300 UPS are removed before anchoring the unit.
NOTE: Ensure the 431B can be joined to the UPS before final anchoring of the 431A. Use four 3/8 in.
-16 x 2 in long bolts to bolt the ancillary cabinet frames together. See Section 12.5.
Figure 12-4 - 431B Base Anchor Points
44
TABLE 12.2 - 431B POWER CABLE SIZES
(
Cable sizes for 75°C Copper Cable)
Batt Cab Recommended Cable
MCCB Sizes
150 A
#1 AWG – 350 kcmil
250 A
250 kcmil – 350 kcmil
* Wire capacity for DC lugs is 350 kcmil - 6 AWG,
TABLE 12.3 - 431B MCCB CONNECTIONS
Lug Cable Condutors
Capacity
#4 AWG - 4/0
3/0 - 350 kcmil
4300 Series Ancillary Cabinets Installation and Operation Manual
UPS Terminal
Lug Tightening
Torque
lb-in
200
lb-in
200
Strip
per Lug Length
1 1 in. 225 lb-in (25 N•M)
1 1 in. 225 lb-in (25 N•M)
4 x 0.63 in. Dia. (16 mm)
Back
Front
19.0 in. (483 mm)
431B MCCB Lug
Tightening
Torque
225 lb-in (25 N•M)
225 lb-in (25 N•M)
Lug Torque
26.7 in..
(677 mm)