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1305 UPS Input Wiring Connections
The Axxium Pro UPS with universal power modules (model ASY-0528, with white labels on the front) is
capable of supplying a single-phase output voltage: 208, 220, 230, or 240 VAC, as selected on the operator
control panel. The Axxium Pro UPS with split-phase power modules (model ASY-0567, with blue labels on the
front) is capable of supplying two output voltages: 100/100 (for 200), 110/110 (for 220), 120/120 (for 240),
120/120 (for 208), or 127/127 (for 220) VAC, as selected on the operator control panel.
Make sure that the UPS is wired for the proper output voltages as shown in Figure 22 and Figures 23-34, and
that the proper power modules (either universal or split-phase) are installed to produce the desired output
voltage. Do not mix the two types of power modules in the same UPS cabinet. Also, make sure the input
wiring, as shown in Figure 16, is correct for the intended type of power module.
Figure 16. Input Wiring of Axxium Pro UPS
1306 Neutral-to-Ground Bonding for Isolated Outputs
As required under safety regulations issued by various regulatory
agencies, the UPS cabinet must have a ground-bond connection for the
neutral terminal of an isolated-output system. In such a system, the
customer must make the neutral-to-ground (also referred to as N-G or
neutral-to-earth) connection after selecting the desired output
configuration.
In isolated-output systems, a green and yellow neutral-to-ground
bonding wire is supplied, with one end attached to UPS chassis ground
as shown in Figure 17. The other end of the wire (*) must be attached
to the proper output neutral terminal, as specified in Figure 22.
If there is any question as to the need for this bond wire, contact your
local regulatory agency or Best Power Worldwide Service.
Universal Power Modules
(2-wire Plus Ground Input)
208, 220, 230, and 240 VAC
3
2
1
L2/N
L1
GND
Split-phase Power Modules
(3-wire Plus Ground Input) (2 PEN)
100/200, 120/208, 110/220, 127/220, and 120/240 VAC
3
2
1
N
L1
L2
GND
X1
X3
X0
X2
N-G Bond
Wire
Figure 17. N-G Bond Wire
(a)
(b)