220kV on-load-tap-changing power transformer is made of high-quality silicon-steel sheets, and laminated by steps.
220kV on-load-tap-changing power transformer is made of high-quality silicon-steel sheets, and laminated by steps. It is advantageous in low loss, low noise, low voltage partial discharge and high anti short-circuit capacity. The dynamical and thermal stability of this transformer, of which the coils are winded by high-quality oxygen-free copper wire as well as used pre-compressing brackets processes and interior and exterior structure. The transformer tank used wave form shell, has very nice appearance, the core is with D shape yoke and 45 angle seaming. The core and oil box are well fixed and well protected on moving.
31500-180000/220 combined type transformer technical parameter
| Ratedpower (kVA) | Valtage | Connction | 9 loss(kW) | 10 loss(kW) | 11 loss(kW) | No-load Loss(%) | Impedence Voltage(%) | ||||
| H.V(kV) | L.V(kV) | No-Load Loss | Load Loss | No-Load Loss | Load Loss | No-Load Loss | Load Loss | ||||
| 31500 | 220 ±8×1.25% | 6.3 | YNd11 | 38 | 135 | 34.2 | 128.3 | 30.4 | 128.3 | 0.7 | 12-14 |
| 40000 | 10.5 | 45 | 157 | 40.5 | 149.2 | 36 | 149.2 | 0.63 | |||
| 50000 | 35 | 54 | 189 | 48.6 | 179.6 | 43.2 | 179.6 | 0.56 | |||
| 63000 | 38.5 | 63 | 220 | 56.7 | 209 | 50.4 | 209 | 0.56 | |||
| 90000 | 10.5 | 80 | 288 | 72 | 273.6 | 64 | 273.6 | 0.49 | |||
| 120000 | 11 | 99 | 346 | 89.1 | 328.7 | 79.2 | 328.7 | 0.49 | |||
| 150000 | 35 | 116 | 405 | 104.4 | 384.8 | 92.8 | 384.8 | 0.42 | |||
| 180000 | 38.5 | 135 | 468 | 121.5 | 444.6 | 108 | 444.6 | 0.42 | |||
