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China S11/S13 Oil-Immersed Transformer Suppliers - Low-Loss Copper Winding Factory Hot-Selling Products
Core Product Advantages
1
Outstanding Economic Benefits & Significant Energy Conservation
Compared with the traditional S9 series, the S11 series achieves an average reduction of 30% in no-load loss, a significant decrease of 70%–85% in no-load current, and an additional 15% reduction in total loss compared to national standards. With high-permeability cold-rolled silicon steel core and oxygen-free copper winding, the power conversion efficiency is higher. Each unit can save over 1,000 kWh of electricity annually. Long-term use can help users significantly reduce electricity costs, achieving a win-win situation of green energy conservation and economic benefits.
2
Fully Sealed Design & Extremely Long Service Life
The transformer oil tank adopts a fully sealed structure. The oil tank and flange can be flexibly connected by bolts or welded, ensuring that the transformer oil is completely isolated from the air. This effectively avoids oil oxidation, moisture absorption and deterioration, fundamentally extending the equipment's service life to over 25 years, reducing the frequency of later replacement and maintenance, and lowering the overall investment cost.
3
Process Upgrades & Safety Enhancements
Core components of the oil tank sealing system have been improved and manufacturing processes optimized, significantly enhancing sealing performance and effectively preventing leakage risks. The equipment is equipped with multiple safety protection devices such as pressure relief valves and gas relays, offering excellent fire and explosion resistance. It has passed ISO9001 quality management system certification and national 3C compulsory certification, ensuring stable operation in extreme temperatures ranging from -40°C to 60°C and guaranteeing uninterrupted power transmission.
4
Compact Structure Design & Space-Saving
The S11-M series exclusively adopts corrugated plate radiators. By utilizing the natural expansion and contraction of the corrugated plates when the oil temperature changes, it replaces the traditional oil conservator function. This makes the appearance simple and elegant while significantly reducing equipment volume and footprint. The product capacity ranges from 10 kVA to 2500 kVA, with voltage levels suitable for mainstream scenarios of 10 kV / 0.4 kV. It supports customized design, and installation and maintenance are convenient and efficient — ideal for factories, urban distribution networks, and new energy projects.
Product Specifications
| Rated Capacity (kVA) | Voltage Combination | Connection Group Symbol | No-load Loss (W) | On-Load Loss (kW) 75℃ | No-load Current (%) | Short-circuit Impedance (%) | ||
|---|---|---|---|---|---|---|---|---|
| High Voltage (kV) | High Voltage Tapping (kV) | Low Voltage (kV) | ||||||
| 30 | 6 6.3 10 10.5 11 |
± 5% ± 2*2.5% |
0.4 | Dyn11 Yno |
100 | 630/600 | 0.80 | 4.0 |
| 50 | 130 | 910/870 | 0.75 | |||||
| 63 | 150 | 1090/1040 | 0.75 | |||||
| 80 | 180 | 1310/1250 | 0.70 | |||||
| 100 | 200 | 1580/1500 | 0.65 | |||||
| 125 | 240 | 1890/1800 | 0.65 | |||||
| 160 | 280 | 2310/2200 | 0.60 | |||||
| 200 | 340 | 2730/2600 | 0.50 | |||||
| 250 | 400 | 3200/3050 | 0.50 | |||||
| 315 | 480 | 3830/3650 | 0.45 | |||||
| 400 | 570 | 4520/4300 | 0.45 | |||||
| 500 | 680 | 5410/5150 | 0.40 | |||||
| 630 | 810 | 6200 | 0.40 | 4.5 | ||||
| 800 | 980 | 7500 | 0.35 | |||||
| 1000 | 1150 | 10300 | 0.35 | |||||
| 1250 | 1360 | 12000 | 0.30 | |||||
Detail Pictures
Frequently Asked Questions
Q
What is the main difference between the S11 series and the traditional S9 series transformer?
The S11 series offers significantly improved energy efficiency compared to the S9 series, with an average 30% reduction in no-load loss, a 70%–85% decrease in no-load current, and a 15% lower total loss than national standards. It also features a fully sealed design that extends service life to over 25 years.
Q
What capacity range and voltage levels does the S11 series support?
The S11 series covers a product capacity range from 10 kVA to 2500 kVA, with voltage levels suitable for mainstream scenarios of 10 kV / 0.4 kV. Customized designs are also available to meet specific project requirements.
Q
How does the fully sealed design benefit the transformer's performance?
The fully sealed oil tank completely isolates the transformer oil from the air, preventing oxidation, moisture absorption, and oil deterioration. This design fundamentally extends the equipment's service life to over 25 years while reducing maintenance frequency and overall investment costs.
Q
What safety certifications does the S11 series transformer hold?
The S11 series has passed ISO9001 quality management system certification and national 3C compulsory certification. It is also equipped with multiple safety protection devices including pressure relief valves and gas relays, and can operate stably in extreme temperatures ranging from -40°C to 60°C.
Q
What is the function of the corrugated plate radiator in the S11-M series?
The corrugated plate radiator in the S11-M series utilizes the natural expansion and contraction of the corrugated plates in response to oil temperature changes, replacing the function of a traditional oil conservator. This results in a more compact and elegant design that significantly reduces equipment volume and the space required for installation.
Q
What application scenarios is the S11 series transformer suitable for?
The S11 series is suitable for a wide range of applications including industrial factories, urban power distribution networks, and new energy projects. Its compact structure, customizable design, and high energy efficiency make it an ideal core power equipment that combines reliability and economic performance.