Alpha Technologies FXM350_Micro350 UPS - Manual (Page 40)

017-241-B0 Rev B 38
6.2.1.3 Battery Charging in Line Mode
The battery charging path is shown in Figure 25.
• Charging current of 4A for 48V battery
• Charging current of 6A for 24V battery
• No de-rating of load on AC outputs
6.2.2 Back Up (Inverter) Mode
The FXM350 provides back up power from the batteries if utility power fails. The grid relay opens to prevent
power feedback to the grid.
Figure 25 — Battery charging in line mode
Figure 26 — Back up power from batteries
AC EMI
Battery
Input
Output(s)
Inverter/
Charger
120
INV
120
108
132
N
AC EMI
Battery
Input
Output(s)
Inverter/
Charger
120
INV
120
108
132
N
Grid relay
Grid relay