An Automatic Power Factor Correction (APFC) panel is a crucial component in industrial electrical systems designed to maintain and improve power factor automatically. The manufacturing process of an APFC panel involves several key steps. First, engineers design the panel's layout and circuitry, determining the optimal number and rating of capacitor banks. . These capacitors are the core components that correct the power factor. The fabrication then begins with cutting and shaping the sheet metal for the panel enclosure. Next, the internal components, including the APFC controller, contactors, capacitors, and protection relays, are mounted and wired according to the design specifications. The controller, which is the 'brain' of the system, continuously monitors the load and switches the appropriate capacitor banks in or out to keep the power factor close to unity, typically above 0.95. Finally, the panel undergoes rigorous testing to ensure it meets safety and performance standards before being shipped to the customer. This automated process ensures efficient power usage and reduces electricity bills for large-scale consumers.