Varispeed AC Varispeed AC No peripheral devices such as sine-wave converters, devices to prevent harmonics, or braking units are needed. As a result, installation space can be saved with the Varispeed AC. This also eliminates the wiring for those unnecessary devices simplifying the enclosure design, installation, and maintenance. 3 Compact Advantages Construct your system in limited space.
Installation Space, Mass, and Wiring Comparison ( 200 V Class, 22 kW ) Installation Space, Mass, and Wiring Comparison ( 200 V Class, 22 kW ) Sine-Wave Converter + Conventional General-Purpose Inverter 7 10 Installation Surface Mass 62 % 62 % Mass Installation Surface 45 % 45 % smaller smaller lighter lighter Wires 70 % 70 % Wires fewer fewer Varispeed AC 18 19 20 17 1 2 3 4 5 6 Sine-Wave Converter Inverter Note: Numbers above the lines indicate the number of wires. Total Installation Surface : 0.364 m 2 Total Mass : 118.2 kg Total Number of Wires : 20 Installation Surface : 0.201 m 2 Mass : 45 kg Number of Wires :
6 Even during low-speed operation, all IGBTs in the main circuit turn off and on for switching according to the frequency of the AC power supply. Switching is divided evenly among the IGBTs for a uniform heat load. As a result, the Varispeed AC does not need any extra capacity for low - speed operation. 4 Powerful Operate continuously at low speeds. Capable of 100 % torque in continuous operation at zero speed , and 150 % torque for one minute at zero speed . : In flux vector control. 7 8 Harmonic Filter Reacto 9 4 5 11 Harmoni Filter Capacito 12