Powerware 9170 User Manual page 38

UPS with Bypass Electrical Installation
NOTE
output, it is recommended to divide the total load as equally as possible
between X1 and X2, as shown in Figure 19.
NOTE
the full capacity of the UPS has not been reached.
X2
Figure 19. Split-Phase Power Modules with Non-Isolated Output
NOTE
chassis without a power cord is 3-wire plus ground input. If you have a
Universal Power Module (ASY-0674), all receptacles MUST be re-wired
for a 2-wire plus ground input configuration as shown in Figure 20.
Figure 20. Universal Power Modules with Non-Isolated Output
11.
30
+
For Powerware 9170 UPS models with low-voltage hardwire
Failure to balance the loads may cause an overload alarm even if
100/200, 110/220, 127/220, 120/208, or 120/240V Out
Parameter 4-2-4 set to 200, 220, 208, or 240, as required.
X2
X
X1
L2
The factory-default wiring for all high-voltage receptacles in a
50 or 60 Hz
200, 208, 220, 230, or 240V Out *
Parameter 4-2-4 set to 200, 208, 220, 230, or 240, as required.
X2 X1
X
L1
If the bypass switch is an MBB style, notice the cable routed out
of the left side of the bypass switch cabinet. The red and black
pair of wires (normally open) in this cable must be connected to
terminals 3 and 4 in Steps 12 and 13. (Do not connect the white
and black pair of wires in this cable.)
+
Powerware 9170 UPS User's Guide
®
50 or 60 Hz
X1
X
200, 220 100, 110, 127, or 120
208, or 240
50%
100, 110, 127, or 120
50%
L1
N/-DC
X
*
L2/N
Rev B www.powerware.com
S
N/-DC
X
N