Eaton ARRAY 3A3 Pro, Manual

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11
Chapter 5 E lectrical Installation
The electrical installation of the 3A3 Pro UPS must be performed according to the electrical code and the 3A3
Pro UPS installation specifications by a qualified engineer that has passed the training. Any other personnel
with no qualification are forbidden to perform the installation. Only basic installation instructions are included
in this manual and please refer to the installation specifications for detailed information.
5.1 Requirements of wiring cables
The 3A3 Pro UPS provides four options on its cabinet capacity (maximum UPS modules that can be con-
tained in the cabinet): 60kVA (maximum four UPS modules), 90kVA (maximum six UPS modules), 120kVA
(maximum eight UPS modules) and 150kVA (maximum ten UPS modules). And overload and line voltage
should also be taken into consideration for wire diameter selection on the basis of the cabinet capacity op -
tions. It is generally recommended that the user choose the wire diameter according to the maximum capacity
of the UPS cabinet, which can ensure that there is no need to change the wire diameter when expanding the
capacity of the UPS.
If the quantity of the UPS modules installed is less than the capacity of the UPS cabinet, the user can also
choose the wire diameter according to the actual needs. The wire diameter may vary with the quantity of the
UPS modules installed. Please refer to the table below for module quantity and corresponding wire diameter.
Module Cable Cross Section
UPS Input UPS Output Battery Cable
L N L N
UL GB UL GB UL GB UL GB UL GB
1 12AWG 6mm
2
6AWG 16mm
2
12AWG 6mm
2
6AWG 16mm
2
12AWG 6mm
2
2 6AWG 16mm
2
6AWG*2 16mm
2
*2 6AWG 16mm
2
6AWG*2 16mm
2
*2 6AWG 16mm
2
3 4AWG 25mm 2 4AWG*2 25mm 2 *2 4AWG 25mm 2 4AWG*2 25mm 2 *2 4AWG 25mm 2
4 6AWG*2 16mm
2
*2 2AWG*2 35mm
2
*2 6AWG*2 16mm
2
*2 2AWG*2 35mm
2
*2 6AWG*2 16mm
2
*2
5 4AWG*2 25mm
2
*2 4AWG*3 25mm
2
*3 4AWG*2 25mm
2
*2 4AWG*3 25mm
2
*3 4AWG*2 25mm
2
*2
6 4AWG*2 25mm 2 *2 2AWG*3 35mm 2 *3 4AWG*2 25mm 2 *2 2AWG*3 35mm 2 *3 4AWG*2 25mm 2 *2
7 4AWG*2 25mm
2
*2 2AWG*3 35mm
2
*3 4AWG*2 25mm
2
*2 2AWG*3 35mm
2
*3 4AWG*2 25mm
2
*2
8 2AWG*2 35mm
2
*2 2AWG*3 35mm
2
*3 2AWG*3 35mm
2
*3 2AWG*3 35mm
2
*3 2AWG*3 35mm
2
*3
9 2AWG*3 35mm 2 *3 4/0AWG*2 95mm 2 *2 2AWG*3 35mm 2 *3 4/0AWG*2 95mm 2 *2 2AWG*3 35mm 2 *3
10 1/0AWG*2 50mm
2
*3 4/0AWG*2 95mm
2
*2 1/0AWG*2 50mm
2
*2 4/0AWG*2 95mm
2
*2 1/0AWG*2 50mm
2
*2