... : within -15%10%; voltage imbalance: <3%; frequency fluctuation: within 5%.outputVoltageSingle phase,220V & 3 phase ... 485 connector RS485+,RS485-4 bits LED displaysetting frequency, output frequency, output voltage, output current, motor speed, ... of motor, overheat, overvoltage stallout, load short circuit, phase fault. Protection degreeIP21Cooling modeForced air coolingenvironmentAmbient temperature ...