Drives for motors; Variable frequency drives for motors, other than for land vehicles; Electrolysis machines for generating gases; Machines for generating gas by electrolysis; Electrolysis machines for generating hydrogen; AC variable frequency drives that are used to control small and medium-sized motors in applications such as manufacturing processes, HVAC and pumps; Variable frequency drives for large power applications in the oil and gas, metal, marine and other Industries; Servo-drives f...