MGE UPS Systems EPS 7000 - Manual (Page 16)

1.4.2 Power Flow Diagrams
1.4.2.1 Normal Operation
During normal operation, power flows from the main AC input source (mains 1) into the UPS rectifier/battery charger
section. The rectifier/battery charger converts the AC voltage to DC, maintains the charge of the battery, and feeds
the DC power to the inverter. The inverters regenerate AC voltage, and supply the SSC’s UPS module AC output bus.
The SSC supplies the attached load. See Figure 1-5.
Figure 1-5: Normal Operation, Power Flow Diagram.
Introduction
EPS 7000 Shared Systems
page 1 — 6
TO
ATTACHED
LOAD
Main AC input
(mains 1)
Rectifier/battery
charger Inverter
Battery
Rectifier/battery
charger Inverter
Battery
UPS module
UPS module
Static switch
cabinet (SSC)
Additional
modules
Additional
modules
Bypass AC input
(mains 2)
Q2S
Static switch