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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
DPS
300kVA
DPS
400kVA
DPS
500kVA
DPS
600kVA
Input
Rated current at 220V
with battery charging
500A 660A 820A 980A
Recommended cable size
(L1/ L2/ L3/ N)
120 mm
2
× 2 PCS
(250 kcmil
× 2 PCS)
120 mm
2
× 3 PCS
(250 kcmil
× 3 PCS)
150 mm
2
× 3 PCS
(300 kcmil
× 3 PCS)
185 mm
2
× 3 PCS
(400 kcmil
× 3 PCS)
Maximum cable size
(L1/ L2/ L3/ N)
185 mm
2
× 2 PCS
(400 kcmil
× 2 PCS)
185 mm
2
× 3 PCS
(400 kcmil
× 3 PCS)
240mm
2
× 3 PCS
(500 kcmil
× 3 PCS)
300mm
2
× 3 PCS
(600 kcmil
× 3 PCS)
Cable lug width
30 mm
(1.18")
30 mm
(1.18")
34 mm
(1.34")
38 mm
(1.50")
Maximum cable lug width
38 mm
(1.50")
38 mm
(1.50")
42 mm
(1.65")
48 mm
(1.89")
Screw size M12