Item | Specification | WDG (single phase), WLG (two phases) Type A |
1 | Max. rated through-current (A) | 250 | 300 | 400 | 500 | 600 | 800 | 1000 | 1250 | 1600 | 2000 |
2 | Short-circuit current test (kA) | Thermal (3s) | 5 | 5.4 | 6 | 7 | 8 | 10 | 12 | 14 | 16 | 20 |
Dynamic (Peak) | 12.5 | 13.5 | 15 | 17.5 | 20 | 25 | 30 | 35 | 40 | 50 |
3 | Rated frequency (Hz) | 50 or 60 |
4 | Connection | Liner (IV), single bridging (V), Y-D change-over (VI), double-bridging (VII), series-parallel (VIII), reversing (II) |
5 | Max. Operating Positions | 5 (IV), 7 (V, VII), 2 (VI, VIII), 7 (II) |
6 | Insulation to ground (kV) | Highest voltage for equipment Um | 12 | 40.5 | 72.5 | 126 |
Rated separate source AC withstand voltage (kV/50Hz,1min) | 35 | 95 | 140 | 230 |
Rated lightning impulse withstand voltage (kV,1.2/50μs) | 75 | 200 | 325 | 550 |
7 | Mechanical life | Not less than 20,000 operations for manual driving Not less than 100,000 operations for motor driving |
8 | Operation method | Manual operation on top or at side, motor driving at side |