| Input voltage | Single phase:185-250V ; Three phase:320-430V |
| Output Voltage | Single phase:220V±1%; Three phase:220V±1% |
| Frequency | 50HZ±4% |
| Voltage for over voltage protection | Single phase:246±4V; Three phase:426±7V (3P) |
| Loading effect | ≤±0.5% |
| Dielectric strength | 1,500V/min |
| Efficiency | ≥95% |
| Wave form distortion | ≤5% |
| Response time | 20-100ms |
| Peak absorption | input 500V-13us |
| Ambient temperature | -10±40°C |
| Insulation resistance | ≥2MΩ |

| Model | Output power | Product size L*W*H(cm) | Net weight(kg) |
| JJW-1K | 1KVA | 33*17*27 | 14 |
| JJW-2K | 2KVA | 38*18*31 | 19 |
| JJW-3K | 3KVA | 41*20*33 | 26 |
| JJW-5K | 5KVA | 46*23*37 | 34 |
| JJW-10K | 10KVA | 50*25*42 | 57 |
| JJW-15K | 15KVA | 60*28*45 | 73 |
| JJW-20K | 20KVA | 60*28*45 | 90 |
| JSW-3K | 3KVA | 45*34*65 | 55 |
| JSW-6K | 6KVA | 47*40*85 | 80 |
| JSW-9K | 9KVA | 47*40*85 | 105 |
| JSW-15K | 15KVA | 55*44*90 | 128 |
| JSW-20K | 20KVA | 58*48*98 | 150 |
| JSW-30K | 30KVA | 58*48*98 | 180 |
| JSW-50K | 50KVA | 65*70*116 | 240 |