Frequency Conversion Mode - Delta Modulon DPH Series User Manual

3.6

Frequency Conversion Mode

NOTE:
1. Frequency Conversion mode is only applicable to single UPS, but not to
parallel UPSs.
2. When the UPS runs in Frequency Conversion mode, once the inverter
becomes off, there is no bypass power supplying to the loads.
After the UPS is manually set as Frequency Conversion mode via the LCD, the inverter
will automatically select 50Hz or 60Hz as the fixed output frequency. After the output
frequency is determined, the system will automatically disable the bypass function.
Please note that, once the inverter shuts down, there is no bypass output. During
Frequency Conversion mode, the UPS's tri-color LED illuminates green and the text
'Frequency Conversion' appears in the upper right corner of the LCD screen.
Bypass
MAIN
Batteries
Delta UPS DPH 50-200kVA
Static Switch
Rectifier
Figure 3-6: Frequency Conversion Mode Diagram
Inverter
LOAD
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