Eaton Power Xpert 9395 550/275, Инструкция по установке и эксплуатации

Страница: 118 / 208

Understanding UPS Operation
6-18 Power Xpert
TM
9395 550/275 UPS (225–550 kVA) Installation and Operation Manual 164201716—Rev 8 www.eaton.com/powerquality
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.
6.5 Multiple UPS Distributed Bypass System Oneline Configurations
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 6-5 through Figure 6-8.
Oneline Drawing UPS Model
Voltage
System Type
Input Output
Figure 6-13 on page 6-19
9395-550/225
9395-550/275
9395-550/450
9395-550/500
9395-550/550
400
480
400
480
Multiple UPS –

Distributed Bypass 1+1 and
2+0 Configurations
Figure 6-14 on page 6-20
9395-550/225
9395-550/275
9395-550/450
9395-550/500
9395-550/550
400
480 400
480 Multiple UPS –

Distributed Bypass 2+1 and
3+0 Configurations
Figure 6-15 on page 6-21
9395-550/225
9395-550/275
9395-550/450
9395-550/500
9395-550/550
400
480 400
480 Multiple UPS –

Distributed Bypass 3+1 and
4+0 Configurations