The UNI-550-L series special frequency inverter for lifting is specifically designed by for applications in lifting, bridge cranes, electric hoists, tower cranes, and construction elevators. It utilizes frequency control technology, excellent torque control, reliable brake control, fast stop, DC excitation, master-slave control, and other advanced features. These technologies reduce the impact of starting and stopping currents on the mechanical system, improve stability and comfort during operation, extend the life of the mechanical system, and significantly enhance production efficiency while lowering equipment maintenance costs.