Emerson 7400 Series User Manual page 17

Series 7400 Single Phase 1+N UPS
Bypass
Supply
Mains
Supply
Mains
Supply
Bypass
Supply
RECTIFIER
BATTERY
BATTERY
RECTIFIER
Figure 4: Parallel control in a one-plus-one system
Battery charge current sharing:
The illustration in figure 4 shows a dedicated battery installation for
each module; however, it is possible to fit an option kit which allows
the two modules in a one-plus-one system to share a common
battery. Such an installation is shown in figure 5 overleaf.
STATIC
INVERTER
SWITCH
1+1 PARALLEL CONTROL
1+1 PARALLEL CONTROL
STATIC
INVERTER
SWITCH
UPS
Output
Supply
8