Reduce electicity bill Soft start/stop Protect the Motors. COPOWCO InverterTechnical Index: IndexDescriptionstructureProtection gradeIP20Forced air cooling and natural coolingInput powerRated voltage3-phase 380V,single-phase 220V,3-phase 220V,3-phase 460V,3-phase 660VPhases and frequencyThree phase50/60Hz(reference rated current specification)Allowed rangeVoltage allow ± 20% change , frequency ...