Green Mode_ Single Input_ Parallel Units - Delta Modulon DPH series User Manual

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.
1
MAIN
Batteries
2
MAIN
Batteries
Modulon DPH Series
Delta or non-Delta External Maintenance Bypass Cabinet
Q3
UPS
Q1 Q0
Q5
Delta or non-Delta External Maintenance Bypass Cabinet
Q3
UPS
Q1 Q0
Q5
(Figure 3-17: Green Mode Diagram_ Single Input Parallel Units)
Static Switch
Rectifier Inverter
Static Switch
Rectifier Inverter
3-18
Q4
Q4
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