Powerware 9170+ - Manual (Page 48)

Isolated Output Wiring Diagrams
44 Powerware ® 9170 User's Guide S LTM-1344 B Uncontrolled Copy
100, 110,
115, or 120
X2
50 or 60 Hz
100/200, 110/220, 115/230, or 120/240V Out
with Isolated Output Option
Parameter 7-3-4 set to 200, 220, 230, or 240, as required.
X1 X3
X X
N-G Bond
L2 N
X
L1
200, 220, 230, or 240
100, 110,
115, or 120
X0
Figure 34. Isolated Outputs ć Single-Phase Voltages
X2
50 or 60 Hz
120/208 or 127/220V Out
with Isolated Output Option
Parameter 7-3-4 set to 208 or 220, as required.
X1 X3
X X
N-G Bond
L2 N
X
L1
208 or 220
120 or 127
X0
88 or 93
Figure 35. Isolated Outputs ć Derived 3-Phase Voltages
Neutral-to-Ground Bonding for Isolated Output
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 connected to the ground (earth)
UPS terminal as shown in Figure 36. The other end of the wire (as
shown by * in Figure 36) must be attached to the proper output neutral
terminal, as specified in Figure 34 and Figure 35.