Voltage regulation: the automatic voltage regulator AVR R448 uses a closed-loop control system to regulate the output voltage by adjusting the excitation field current, delivering stable and consistent voltage output. Precise tuning options: quadrature drop setting, AVR voltage adjustment, stability adjustment, LAM threshold (underspeed) and excitation upper limit adjustment allow exact tailoring to system requirements. Flexible configuration: supports single-phase or three-phase selection, voltage detection, normal or fast response time, and 50Hz or 60Hz frequency option, expanding compatibility across different applications. Enhanced protection: built-in underspeed and over-excitation protection safeguard the generator and connected electrical devices from voltage fluctuations and abnormal operating conditions. Use scenarios: - Standby power for data centers or telecom facilities where stable voltage is critical under varying loads. - Industrial generators powering sensitive equipment and motors, where precise voltage control improves performance and longevity. - Remote sites or mobile generators (weather stations, field offices) needing reliable regulation and protection with flexible phase and frequency options.