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The SZ11 series 35kV on-load voltage regulating transformer is designed for efficient and reliable power distribution in medium to high-voltage applications. It features advanced insulation materials and construction technology, ensuring low noise, low losses, and high short-circuit resistance.
Low Losses: No-load losses are significantly lower than national standards, contributing to energy savings
Low Noise: Noise levels are lower than traditional transformers, often below 60dB
High Reliability: Features a fully sealed design to prevent moisture ingress and oil leakage
Strong Short-Circuit Resistance: Successfully passes national-level short-circuit tests
Maintenance-Free Design: Sealing components have the same lifespan as the transformer, reducing maintenance needs
Rated Voltage: 35kV
Rated Capacity: Up to 20000kV
Connection Group: YNd11 or Yd11
Protection Level: IP2X
Applications
Ideal for power distribution in urban power grids, industrial plants, commercial buildings, and public infrastructure projects.Key Benefits
| Rated capacity(kVA) | Voltage Combined | Vector-group | No-load loss(W) | 75°C Load-loss(W) | No-load current(%) | Short-circuit impedance(%) | ||
| HV(kV) | Tapping ranges | LV(kV) | ||||||
| 2000 | 35 | ±3*2.5% | 6.3 10.5 | Yd11 | 2300 | 19240 | 0.80 | 6.5 |
| 2500 | 2720 | 20640 | 0.80 | |||||
| 3150 | 35 38.5 | ±3*2.5% | 6.3 10.5 | 3230 | 24710 | 0.72 | 7.0 | |
| 4000 | 3870 | 29160 | 0.72 | |||||
| 5000 | 4640 | 34200 | 0.68 | |||||
| 6300 | 5630 | 36770 | 0.68 | 7.5 | ||||
| 8000 | 35 38.5 | ±3*2.5% | 6.3 6.6 10.5 11 | Ynd11 | 7870 | 40610 | 0.60 | |
| 10000 | 9280 | 48050 | 0.60 | |||||
| 12500 | 10940 | 56860 | 0.56 | 8.0 | ||||
| 16000 | 13170 | 70320 | 0.54 | |||||
| 20000 | 15570 | 82780 | 0.54 | |||||