| MODEL | WS-250D | WS-315D | WS-400D | WS-500D |
| Input Voltage | 3 x 380V/400/415V, 50/60HZ | |||
| Input Power Capacity | 9KVA | 12KVA | 16KVA | 25KVA |
| No Load Voltage | 65-75V | |||
| Current Range | 20-250A | 20-315A | 20-400A | 50-500A |
| Rate Duty Cycle | 60% | |||
| Current Down Slope Time | 0-10 S | |||
| Gas Post Flow | 1-25 S | |||
| Dimentions (L X W X H) | 520 x 305 x 540mm | |||
| Weight (Kg) | 30 | 37 | 40 | 48 |