The S11 series 10kV-35kV non-excitation 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: 10kV to 35kV
Rated Capacity: Up to 31500kV
Connection Group: YNd11 or Yd11
Protection Level: IP2X
Ideal for power distribution in urban power grids, industrial plants, commercial buildings, and public infrastructure projects
Enhanced safety and reliability with minimal maintenance
Compact and space-efficient design
Suitable for harsh environments and high load conditions
Long service life and reduced operational costs
S11 Series 20kV Off-Excitation Voltage Regulating Transformer Technical Data Sheet
Rated capacity(kVA) | Voltage Combined | Vector-group | No-load loss(W) | 75°C Load-loss | No-load current | Short-circuit impedance | ||
HV(kV) | Tapping ranges | LV(kV) | ||||||
30 | 20 | ±5% ±2*2.5% | 0.4 | Dyn11 | 90 | 660 | 2.1 | 5.5 |
50 | 130 | 960 | 2.0 | |||||
63 | 150 | 1145 | 1.9 | |||||
80 | 180 | 1370 | 1.8 | |||||
100 | 200 | 1650 | 1.6 | |||||
125 | 240 | 1980 | 1.5 | |||||
160 | 290 | 2420 | 1.4 | |||||
200 | 330 | 2860 | 1.3 | |||||
250 | 400 | 3350 | 1.2 | |||||
315 | 480 | 4010 | 1.1 | |||||
400 | 570 | 4730 | 1.0 | |||||
500 | 680 | 5660 | 1.0 | |||||
630 | 810 | 6820 | 0.9 | 6.0 | ||||
800 | 980 | 8250 | 0.8 | |||||
1000 | 1150 | 11330 | 0.7 | |||||
1250 | 1350 | 13200 | 0.7 | |||||
1600 | 1630 | 16950 | 0.6 | |||||
2000 | 1950 | 19140 | 0.6 | |||||
2500 | 2340 | 22220 | 0.5 | |||||
