2.2System Description
The UPS is connected between the public utility mains and the loads to be protected.
The power section of the rectifier converts the mains voltage to DC voltage for supplying the inverter. The circuit technology used (PFC) enables sinusoidal current consumption and therefore operation with little system disturbance. A separate, second rectifier (charging REC set up using switch mode power supply technology) is responsible for charging or
In the event of mains faults (such as e.g. current failures), the voltage continues to be supplied from the inverter to the load without any interruption. From this point onwards, the inverter draws its power from the battery instead of the rectifier. Since no switching operations are necessary, there is no interruption in the supply to the load.
The automatic electronic bypass serves to increase the reliability of the supply further, especially in the case of individual systems. It switches the public mains directly through to the load without any interruption, e.g. when there is an inverter malfunction. As a result, the automatic bypass represents an extra passive redundancy for the load.
An integrated, manually operated bypass unit ensures an uninterrupted supply to the connected loads in the case of maintenance and/or service work. The internal electronic part (with the exception of the
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