Emerson 7400 - Manual (Page 17)

8
Series 7400 Single Phase 1+N UPS
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.
Figure 4: Parallel control in a one-plus-one system
RECTIFIER
STATIC
SWITCH
INVERTER
Mains
Supply
BATTERY
1+1 PARALLEL CONTROL
RECTIFIER
STATIC
SWITCH
INVERTER
Mains
Supply
BATTERY
1+1 PARALLEL CONTROL
Bypass
Supply
Bypass
Supply
UPS
Output
Supply