Jiangsu Huachen Transformer Co.,Ltd.
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The S22 Type Grade 1 Energy Efficiency Oil-Immersed Transformer is an advanced energy-saving power distribution equipment fully compliant with the GB20052-2020 national standard. Developed through independent innovation, new material application, and advanced process introduction, this transformer features an optimized core and coil structure design, which significantly reduces no-load loss and operational noise. Compared with Grade 2 energy efficiency models, this series delivers much lower power loss, with noise levels averaging 20% lower than the current national standard JB/T10088-2016, reaching the domestic advanced level for distribution transformers. It is the ideal choice for low-carbon, energy-saving power distribution projects for industrial and commercial facility operators.
Fully compliant with GB20052-2020 Grade 1 energy efficiency requirements, the low-loss oil-immersed distribution transformer achieves significantly lower no-load and load losses than Grade 2 models, delivering continuous reduction in operational electricity costs over its 30-year+ service life for power distribution operators.
Through optimized core structure and damping design, the transformer’s noise level is 20% lower than the industry standard on average, making it perfectly suitable for noise-sensitive scenarios such as commercial complexes, residential areas, and public infrastructure.
Adopting high-quality grain-oriented silicon steel sheets, premium insulating materials, and advanced vacuum drying and oil filling processes, the transformer delivers excellent dielectric performance, strong short-circuit resistance, and long-term stable operation in harsh working environments.
The series fully meets the latest national energy efficiency and safety standards, ensuring smooth access to urban and rural power grids, and supporting the low-carbon transformation goals of industrial and commercial facilities.
Model | Rated Capacity (kVA) | Connection Group | Voltage Combination (kV) | No-Load Loss (W) | Load Loss (W @75°C) | No-Load Current (%) | Short-Circuit Impedance (%) |
|---|---|---|---|---|---|---|---|
S22 | 30 | Dyn11 | HV:10, Tap:±2×2.5%, LV:0.4 | 65 | 455 | 1.2 | 4.0 |
S22 | 50 | Dyn11 | HV:10, Tap:±2×2.5%, LV:0.4 | 80 | 655 | 1.04 | 4.0 |
S22 | 63 | Dyn11 | HV:10, Tap:±2×2.5%, LV:0.4 | 90 | 785 | 0.96 | 4.0 |
S22 | 80 | Dyn11 | HV:10, Tap:±2×2.5%, LV:0.4 | 105 | 945 | 0.96 | 4.0 |
S22 | 100 | Dyn11 | HV:10, Tap:±2×2.5%, LV:0.4 | 120 | 1140 | 0.88 | 4.0 |
S22 | 125 | Dyn11 | HV:10, Tap:±2×2.5%, LV:0.4 | 135 | 1360 | 0.88 | 4.0 |
S22 | 160 | Dyn11 | HV:10, Tap:±2×2.5%, LV:0.4 | 160 | 1665 | 0.8 | 4.0 |
S22 | 200 | Dyn11 | HV:10, Tap:±2×2.5%, LV:0.4 | 190 | 1970 | 0.8 | 4.0 |
S22 | 250 | Dyn11 | HV:10, Tap:±2×2.5%, LV:0.4 | 230 | 2300 | 0.72 | 4.0 |
S22 | 315 | Dyn11 | HV:10, Tap:±2×2.5%, LV:0.4 | 270 | 2760 | 0.72 | 4.0 |
S22 | 400 | Dyn11 | HV:10, Tap:±2×2.5%, LV:0.4 | 330 | 3250 | 0.64 | 4.0 |
S22 | 500 | Dyn11 | HV:10, Tap:±2×2.5%, LV:0.4 | 385 | 3900 | 0.64 | 4.0 |
S22 | 630 | Dyn11 | HV:10, Tap:±2×2.5%, LV:0.4 | 460 | 4460 | 0.48 | 4.5 |
S22 | 800 | Dyn11 | HV:10, Tap:±2×2.5%, LV:0.4 | 560 | 5400 | 0.48 | 4.5 |
S22 | 1000 | Dyn11 | HV:10, Tap:±2×2.5%, LV:0.4 | 665 | 7415 | 0.48 | 4.5 |
S22 | 1250 | Dyn11 | HV:10, Tap:±2×2.5%, LV:0.4 | 780 | 8640 | 0.4 | 4.5 |
S22 | 1600 | Dyn11 | HV:10, Tap:±2×2.5%, LV:0.4 | 940 | 10440 | 0.4 | 4.5 |
S22 | 2000 | Dyn11 | HV:10, Tap:±2×2.5%, LV:0.4 | 1085 | 13180 | 0.32 | 5.0 |
S22 | 2500 | Dyn11 | HV:10, Tap:±2×2.5%, LV:0.4 | 1280 | 15270 | 0.32 | 5.0 |
The S22 Grade 1 energy efficiency distribution transformer is widely applicable to urban and rural power grid upgrade and renovation projects, commercial building and residential complex power distribution systems, industrial manufacturing plant power supply, public infrastructure and municipal projects, and low-carbon energy-saving retrofit projects for existing industrial and commercial facilities.
We provide comprehensive customization services to meet diverse project demands, including adjustable rated capacity from 30kVA to 2500kVA, customized voltage grade and tap range, optional connection group labels, enhanced protection grade for outdoor or harsh environments, noise reduction optimization for special scenarios, and intelligent monitoring modules for remote operation and fault warning.
Every S22 Type energy efficiency transformer undergoes strict raw material inspection, full-process production quality control, and comprehensive factory performance testing to ensure compliance with national standards. We offer one-stop technical support, including pre-sales scheme design, on-site installation guidance, regular maintenance training, and long-term after-sales service, to guarantee stable and reliable long-term operation for your power distribution systems.
The transformer is fully compliant with the GB20052-2020 national energy efficiency standard, reaching the highest Grade 1 energy efficiency level for distribution transformers in China.
Through optimized structural design, the transformer’s operational noise level is 20% lower on average than the requirements of the national standard JB/T10088-2016.
Grade 1 transformers have significantly lower no-load and load losses, which translates to substantial long-term savings on electricity costs, shorter investment payback periods, and better alignment with global low-carbon and carbon reduction requirements.
