CE, ISO9000 certification 3 phases, 380V AC 5.5~7.5KW inverter VVVF control, constant,vairable torque ... mode VD4 series3 phases, 380V AC 5.5~7.5KW inverters VD4-45P5Suitable motor: 5.5KW ... lengthCommunicationfunctionWith RS485 port, support Modbus-RTU protocol. Be with master-slave multi-devices linkage function Running functionCommand modeOperated by three mode ...