... AC380V, 0.75~3.7KW inverter VVVF control, constant,vairable torque mode VD4 series, 3 phases, AC380V, 0.75~3.7KW inverterVD4-40P7Suitable ... to avoid trip caused by over-currentFix-length controlThe frequency inverter will stop when reaching the fixed lengthCommunicationfunctionWith RS485 port, ... partsextension cable of digital panel; brake resistor. Frequency inverter Xinje VD4 series AC frequency ...