... frequency: 50Hz~60Hz4, Power factor: 0.99(Rating V. In)5, Efficiency: 95 %( Max)6, THD: 10%OUTPUT CHARACTERS1, Output ... power: 1000W±5%2, Current crest factor: 1.73, Output frequency:30KHZ4, Protection of short/open circuit: Available5, Protection ... Operating temperature range: -30~+554, Dimension (L *W *H): 370X180X105mm)5, Max case temperature (T C): 90°C 1000W 4-step ...