Single Ups Unit System Oneline Configurations; Figure 5-5. Path Of Current Through The Ups In Battery Mode - Eaton 93PM Installation And Operation Manual

Emergency lighting ups 20–40 kw (480v four wire – ul 924)
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Understanding UPS Operation
Bypass Input
Rectifier Input
Rectifier
Switchgear

Figure 5-5. Path of Current Through the UPS in Battery Mode

5.3

Single UPS Unit System Oneline Configurations

The system oneline drawings in this section show the simplified internal structure of the UPS, battery supply,
and basic maintenance bypass.
Oneline Drawing
See Figure 5-6
5-6
Eaton 93PM Emergency Lighting UPS (20–40 kW, 480V Four Wire – UL 924) Installation and Operation Manual P-164000569—Rev 2
Bypass Switchgear
Rectifier
Switchgear
Closed
Open
UPS Model
Input
93PM-50-1
480
Static
Switch
Battery Converter
Battery
Switchgear
Battery
Voltage
Output
480
Single one UPM reverse transfer UPS with external battery
Inverter
Inverter
Switchgear
Main Power Flow
Trickle Current
Energized
De-Energized
System Type
www.eaton.com/powerquality
Output

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