Henan Hengyu Electric Group Co., Ltd.






10kV, SG(Z)(B)11 series non-packaged H-class dry-type transformers
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10kV, SG(Z)(B)11 series non-packaged H-class dry-type transformer
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Product Model Meaning
model number | S | G | (Z) | (B) | □ | - | □ | / | □ |
number meaning | three-phase (physics) | dry | on-load voltage regulation | Foil coils are available for low voltage | Performance Level Designator |
| Rated Capacity |
| Voltage Class |
Product Overview
Non-encapsulated H-class three-phase dry-type power transformers, the main performance indicators are better than the domestic standard, in the whole service life of the excellent electrical performance and mechanical properties. It is most suitable for high fire protection requirements, large load fluctuations and dirty and humid environment, such as high-rise buildings, airports, stations, wharves, subways, hospitals, power plants, metallurgical industry, shopping centers, residential densely populated areas, as well as petrochemical, nuclear power plants, nuclear submarines and other places.
Core Advantages
1. Fully insulated safety protection
High and low voltage coils are made of Nomex insulating material, sealed by VPI vacuum impregnation + Class H high temperature curing, zero partial discharge, fireproof and explosion-proof, no harmful gases, environmentally friendly and non-toxic.
2. Superior heat dissipation and durability
The high-voltage coil adopts a continuous structure, combined with temperature-resistant materials, which improves heat dissipation efficiency and completely avoids the risk of thermal breakdown of multi-layer cylindrical coils, resulting in industry-leading mechanical strength and reliability.
3. Energy efficient design
Advanced structure and material optimization, no-load loss is greatly reduced, with significant energy-saving benefits.
Product Highlights
1. Minimal maintenance: Maintenance-free design, compact structure, simple and beautiful appearance, convenient installation.
2. Environmental resilience: Excellent moisture/fouling/corrosion resistance, no aging and cracking potential.
3. Durable and stable operation: High temperature resistance, short-circuit resistance, adapting to the needs of complex working conditions.
With cutting-edge insulation technology and structural innovation, we provide safe, efficient and long-life green solutions for power systems.
Product Certificate
Transformer Workshop

10kV, SG(Z)(B)11 non-packaged class H dry-type transformer | ||||||
Rated Capacity (kVA) |
Linkage group labeling | Voltage combination (kV) |
No-load current (%) |
No-load loss (W) |
Load Loss (145℃)W |
Short circuit impedance impedance(%) |
30 | Yyn0 Dyn11 |
6~10±2×2.5%/0.4 | 2.4 | 170 | 760 | 4.0 |
50 | 2.4 | 240 | 1070 | |||
80 | 1.8 | 330 | 1480 | |||
100 | 1.8 | 360 | 1690 | |||
125 | 1.6 | 420 | 1980 | |||
160 | 1.6 | 480 | 2280 | |||
200 | 1.4 | 550 | 2710 | |||
250 | 1.4 | 640 | 2960 | |||
315 | 1.2 | 790 | 3730 | |||
400 | 1.2 | 880 | 4280 | |||
500 | 1.2 | 1040 | 5230 | |||
630 | 10 | 1200 | 6290 | |||
630 | 1.0 | 1170 | 6400 | 6.0 | ||
800 | 1.0 | 1360 | 7460 | |||
1000 | 1.0 | 1590 | 8760 | |||
1250 | 1.0 | 1880 | 10370 | |||
1600 | 1.0 | 2200 | 12580 | |||
2000 | 0.8 | 2740 | 15560 | |||
2500 | 0.8 | 3240 | 18450 | |||
1600 | 0.1 | 2200 | 13900 | 8.0 | ||
2000 | 0.8 | 2740 | 17110 | |||
2500 | 0.8 | 3240 | 20290 | |||
Note: The above data is only for reference when designing and selecting, and the final data is subject to the real thing. |
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