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INPUT - Voltage : 220VAC or 230VAC single phase - Voltage Range : 110~250VAC or 130~270VAC - Frequency : 50Hz / 60Hz OUTPUT & EFFICIENCY - Voltage : 220VAC or 230VAC single phase +/- 1~3% - Frequency : 50Hz / 60Hz - Overall Efficiency : >90% PROTECTION & OTHERS - Delay Time : 3s - Full protection : Over-voltage, Under-voltage, Over-temp, Over-current - protection - Response Time : <1 sec (against 10% input voltage variation) - Insulation Resistance : > 5M? - Operating Temperature : -10~40 degC - Humidity : 0~90 % RH (non-condensing)