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Emergency ARD Power Supply
The ARD is a emergency evacuation device with the self recognition and control functions.
It is connected between the mains supply and the elevator control cabinet. When the mains
supply is normal, it supplies power to the elevator. When the mains supply is interrupted, the
ARD supplies power to the main circuit and control circuit.
The following gure shows the schematic diagram.
Figure 5-9 Three-phase emergency ARD power supply