Neutral-To-Ground Bonding For Isolated Output - Eaton Powerware 9170+ User Manual

ISOLATED OUTPUT WIRING DIAGRAMS

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, connect the neutral-to-ground (neutral-to-earth)
wire to the proper terminal before making any other connections to the UPS. 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 38. The other end of the wire (as shown by * in Figure 38) must
be attached to the proper output neutral terminal, as specified in
Figure 36 and Figure 37.
54
EATON Powerware
100/200, 110/220, 115/230, or 120/240V Out
with Isolated Output Option
Menu 4 2 4 set to 200, 220, 230, or 240, as required.
X1
X
L1
Figure 36. Isolated Outputs – Single-Phase Voltages
with Isolated Output Option
Menu 4 2 4 set to 208 or 220, as required.
X1
Figure 37. Isolated Outputs – Derived Three-Phase Voltages
+
®
9170 UPS (3–18 kVA) User's Guide
50 or 60 Hz
X3 X0 X2
X X
N-G Bond
100, 110, 100, 110,
115, or 120 115, or 120
200, 220, 230, or 240
N L2
50 or 60 Hz
120/208 or 127/220V Out
X3 X0 X2
X X X
N-G Bond
88 or 93 120 or 127
208 or 220
L1 N L2
S
164201393 Rev C www.powerware.com