Delta Modulon DPH series - Green Mode_ Single Input_ Parallel Units

3-18
Modulon DPH Series
3.1.15 Green Mode_ Single Input_ Parallel Units
To activate green mode, please refer to 6.2.7 Green Mode Start-up Procedures, 7.6 Main
Screen and 7.10.2 Mode Setting.
For parallel application, green mode is the same as online mode, but the difference is that
each system will automatically detect its UPS’s output status (i.e. total load capacity %) to
decide which specific power modules should be fully powered on or idle in order to achieve
higher efficiency of the UPS. During green mode, each UPS’s tri-color LED illuminates green
and each UPS’s LCD shows the text ‘Green’ in the upper right corner. Please see Figure
3-17 for the path of electrical power through the parallel UPSs in green mode.
MAIN
LOAD
MAIN
1
2
Q1 Q0 Q4
Q3
UPS
Q1 Q0 Q4
Q3
UPS
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Q5
Q5
Delta or non-Delta External Maintenance Bypass Cabinet
Batteries
Rectifier Inverter
Static Switch
Delta or non-Delta External Maintenance Bypass Cabinet
Batteries
Rectifier Inverter
Static Switch
(Figure 3-17: Green Mode Diagram_ Single Input Parallel Units)