Delta Modulon DPH series - Battery Mode_ Single Input_ Single Unit

3-5
3
ௐ
ௐ
Operation Modes
MAIN LOAD
Q1 Q0 Q4
Q3
UPS
Q5
Rectifier Inverter
Static Switch
Delta or non-Delta External Maintenance Bypass Cabinet
Batteries
(Figure 3-3: Online Mode Diagram_ Single Input Single Unit)
3.1.2 Battery Mode_ Single Input_ Single Unit
The UPS transfers to battery mode automatically if the main AC source cannot supply power,
for example, when unstable voltage or a power outage occurs. In battery mode, the batteries
provide DC power and the UPS converts it into AC power and supplies it to the connected
critical loads via the Delta or non-Delta external maintenance bypass cabinet’s Output
Breaker or Switch (Q4). During the conversion process, output voltage remains the same.
Please see Figure 3-4. During battery mode, the UPS’s tri-color LED illuminates yellow and
the text ‘Battery’ appears in the upper right corner of the screen.
MAIN LOAD
Q1 Q0 Q4
Q3
UPS
Q5
Rectifier Inverter
Static Switch
Delta or non-Delta External Maintenance Bypass Cabinet
Batteries
(Figure 3-4: Battery Mode Diagram_ Single Input Single Unit)