Wiring; Pre-Wiring Warnings - Delta Ultron Series User Manual

5.4

Wiring

5.4.1

Pre-wiring Warnings

NOTE:
1. Before wiring, please ensure that you have followed 5.3 Fixing the UPS to fix
the UPS in the designated installation area firmly.
2. Before wiring, please read 5.4 Wiring thoroughly.
3. Only authorized Delta engineers or service personnel can perform installation,
wiring, panel & cover removal, maintenance and operation. If you want to
execute any action mentioned above by yourself, the action must be under the
supervision of authorized Delta engineers or service personnel.
• Before wiring or making any electrical connection, make sure that the power supplied to
the input and output of the UPS is completely cut off.
• Check if the size, diameter, phase and polarity are correct for each cable connecting to
the UPS or external battery cabinet(s). Please refer to Table 5-2.
NOTE:
Table 5-2 is based on (1) default input/ output voltage: 220V, (2) default battery
Q'ty: 40 PCS and (3) maximum charge current. For other conditions different from
Table 5-2, please contact Delta service personnel for relevant values.
Table 5-2: Specifications of Input/ Output/ Battery Cables, Switches & Breakers
UPS Capacity
Rated current at 220V
with battery charging
Recommended cable size
(L1/ L2/ L3/ N)
Maximum cable size
Input
(L1/ L2/ L3/ N)
Cable lug width
Maximum cable lug width
Screw size
DPS DPS
300kVA 400kVA
500A 660A
2
120 mm 120 mm
× 2 PCS × 3 PCS
(250 kcmil (250 kcmil
× 2 PCS) × 3 PCS)
2
185 mm 185 mm
× 2 PCS × 3 PCS
(400 kcmil (400 kcmil
× 2 PCS) × 3 PCS)
30 mm 30 mm
(1.18") (1.18")
38 mm 38 mm
(1.50") (1.50")
59
DPS DPS
500kVA 600kVA
820A 980A
2 2
150 mm
185 mm
× 3 PCS
× 3 PCS
(400 kcmil
(300 kcmil
× 3 PCS)
× 3 PCS)
2 2
240mm 300mm
× 3 PCS × 3 PCS
(500 kcmil (600 kcmil
× 3 PCS) × 3 PCS)
34 mm 38 mm
(1.34") (1.50")
42 mm 48 mm
(1.65") (1.89")
M12
2
2