... voltage vector PWM modulation technology, has over-modulation function, high voltage-utilization, low output harmonic, and it greatly improves ... over current , over load, under voltage, over heat , short circuit and so on , can offer more than 20 kinds failure ... .Vibration: <0.5G Scope of application: ZVF9V-G series frequency inverter applied at the metallurgy, plastomer,textile, food-stuff,petroleum, ...