Circuit Type: (IGBT) MPWM Pulse Duration ModulationInput: 1 Phase 220V10%, 50Hz60Hz5%Output Voltage: HIGHLOW Adjustable1)1 Phase Voltage Range: (HIGH)0300V, (LOW)0150V2) Nominal Voltage: +10%+25%, -10%-30%Output Frequency: 50Hz, 60Hz, adjustable between 45 and 70 Hz, 400HzLoad Voltage Stabilization Rate: 0.5%Frequency Stabilization Rate: 0. 1% (Fix Point 50Hz, 60Hz and 400Hz)Wave Distortion Rate: 2% (Resistor Load); Efficiency: 85%Output Instruments: Frequency Indicator, 4-digits RMS digital frequency indicator, resolution is 0.1Hz Voltage Meter, 4-digits RMS digital voltage meter, resolution 0.1V Ampere Meter, 4-digist RMS digital ampere meter, resolution 1Ma Power Indicator, 4-digits RMS digital power indicator, resolution 1W Power Factor Meter Resolution 0.001Protective Devices: Over load, short circuit, over voltage, over current, over temperature protective and alarm devicesOperating Environment: Temperature 040 Relative Humidity 090%