Eaton Power Xpert 9395, Installation And Operation Manual

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148 Eaton Power Xpert 9395 UPS Installation and Operation Manual 164201725—Rev 15
If at any time during the battery discharge the input power becomes available again, the rectifier begins to
supply DC current to the inverter. At this point, the UPS returns to Online mode. If at any time during the
battery discharge the AC input power becomes available again, each rectifier turns on, assumes the inverter
load from the batteries, and begins recharging the batteries. Depending on the total load and the duration of the
battery discharge, battery and rectifier input current limit alarms may be seen for a short time due to the current
required to recharge the batteries.
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The distributed bypass system oneline drawings in this section show the simplified internal structure of the
UPS, battery supply, and basic maintenance bypass in a multiple UPS configuration. These onelines do not
show each UPM in the UPSs, but represent each UPS in the distributed bypass system. The internal structure
of each UPS is shown in
Figure 82 through Figure 90 .
Oneline Drawing
UPS Model
Voltage
System Type
Input Output
Figure 97 9395-825/650
9395-825/750
9395-825/825
400
480 400
480
Multiple UPS – Distributed Bypass 1+1 and 2+0
Configurations
Figure 98 9395-825/650
9395-825/750
9395-825/825
400
480 400
480
Multiple UPS – Distributed Bypass 2+1 and 3+0
Configurations
Figure 99 9395-825/650
9395-825/750
9395-825/825
400
480 400
480
Multiple UPS – Distributed Bypass 3+1 and 4+0
Configurations
Understanding UPS Operation