... drive (VFD AC drives ) for AC motors as speed controller and energy saver easy understood operation 380Vac commodity: VFD AC ... AC drives = varialble frequency drive(VFD) = speed controller = variable speed drive (VSD)KOC-P5 series made by KCLY electric Co.range from: 5 ... 2 kinds of information meantime, like frequency, current, voltage, speed, time, and PID data. 2. Independent cooling channel design. ...