What does an AAR Panel mean on Generators?

In the context of generators, an AAR panel (Automatic Reserve Starting) is an essential piece of equipment that ensures the automatic transition between grid power supply and generator power supply in the event of a power outage. This automated system is vital for maintaining continuity of power supply, thus protecting critical devices and systems from unexpected power interruptions.

How Does an AAR Panel Work?

During a power failure from the grid, using a generator as a backup solution for the electrical network is crucial. The generator transfer panel plays a key role in automatically transferring consumers from the electrical grid to the generator and back to the grid once it is restored.

This operation is carried out through two contactors in the transfer panel or a motorized switch, depending on the adopted solution. When a grid voltage loss is detected, the generator starts. Once the generator reaches the appropriate voltage and frequency parameters, the AAR (Automatic Reserve Starting) switches the consumers to be powered directly from the generator.

Advantages of an AAR Panel

An integrated AAR panel comes with several significant advantages: all necessary components are integrated in one place, there is no need to install a separate generator box, there is no need to run cables from the generator to the AAR as this connection is already made at the factory, and installing a generator with an integrated AAR is much easier and faster compared to installing a generator without an integrated AAR.

Using the AAR Panel in Various Scenarios

• Industry: Protects critical equipment and processes from power interruptions.
• Data Centers: Prevents data loss and ensures continuous operation of servers.
• Hospitals: Ensures continuous operation of vital medical equipment in the event of a power failure.
• Commercial Buildings: Ensures the continuity of operations and the comfort of occupants.

An AAR panel (Automatic Reserve Starting) is a crucial component for any system requiring uninterrupted power supply. By ensuring an automatic and rapid transition between grid and generator power, AAR panels protect equipment and critical processes, ensuring the continuity of operations in various industries and applications. Investing in a quality AAR panel can prevent significant losses and provide safety and efficiency in managing power supply.