A DG (Diesel Generator) Automatic Panel, also known as an Automatic Mains Failure (AMF) Panel, is a sophisticated electrical control unit that ensures an uninterrupted power supply. The manufacturing of these panels involves several steps. It starts with a robust, often powder-coated metal enclosure that houses the electrical components. The core of the system is a microprocessor-based controller, which acts as the 'brain' of the panel. This controller continuously monitors the main power supply. When it detects a power failure, it automatically sends a signal to start the connected diesel generator. Once the generator reaches the correct voltage and frequency, a motorized or contactor-based Automatic Transfer Switch (ATS) seamlessly transfers the electrical load to the generator. When the mains power is restored, the panel automatically switches the load back and shuts down the generator after a cool-down period. This entire automated sequence eliminates the need for manual operation, making them crucial for hospitals, data centers, and industries where a continuous power supply is essential.