Model: T6K T6KL T10K T10KL 3T10KL 3T15KL 3T20KL Capacity: 6KVA/ 4200W 10KVA/ 7000W 15KVA/ 10500W 20KVA/ 14000W Input Nominal Voltage: 220V 380V Voltage Range: 176~ 276VAC 304~ 478VAC Frequency: 46~ 54Hz/ 56~ 64Hz Output Voltage: 220/ 230/ 240( 1± 1% ) VAC Frequency: 50/ 60Hz( adjustable) 50Hz AC Mode: Follow AC Mode ( AC Range 46~ 54Hz) : Battery Mode: 50Hz( 1± 0.2% ) 60Hz AC Mode: Follow AC Mode ( AC Range56~ 64Hz) ; Battery Mode: 60Hz( 1± 0.2% ) Current Crest Ratio: 3: 1 Output Wave Form: Sine Wave Back-up Time Full Load e72 Depends on the capacity of the external batteries bank e52 Depends on the capacity of the external batteries bank Half Load: e202 e132 Battery Nominal Voltage: 240VDC Transfer Time: 0ms Overload Capacity: 105% ~ 130% 10min, over 150% 1min Communication: RS-232+ Intelligent Slot Operating Environment Temperature: 0C~ 40C Humidity: 15% ~ 90% Dimensions( W* D* H) mm: 260* 570* 717 Net Weight( Kg) : 90.00, 35.00, 93.00, 38.00, 39.00, 55.00, 55.00