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China S11/S13 Oil-Immersed Transformer Suppliers - High-Efficiency Copper Transformer from Trusted Factory
Core Product Advantages
1
Outstanding economic benefits and significant energy conservation and consumption reduction
Compared with the traditional S9 series, the S11 series has 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 and 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, occupying less space
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 not only makes the appearance simple and elegant but also significantly reduces the equipment volume and the occupied area. The product capacity ranges from 10 kVA to 2500 kVA, and the voltage levels are suitable for mainstream scenarios of 10 kV / 0.4 kV. It supports customized design, and the installation and maintenance are convenient and efficient. It is suitable for various application needs such as factories, urban distribution networks, and new energy projects, and is a core power equipment that combines reliability and economy.
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 (FAQ)
Q
What is the main difference between the S11 series and the traditional S9 series oil-immersed transformer?
The S11 series offers significantly improved energy efficiency compared to the S9 series. It achieves an average 30% reduction in no-load loss, a 70%–85% decrease in no-load current, and an additional 15% reduction in total loss versus national standards. It also features a fully sealed oil tank design, extending service life to over 25 years.
Q
What capacity and voltage ranges are available for the S11 series transformer?
The S11 series covers a product capacity range from 10 kVA to 2500 kVA. The standard voltage combination supports high voltage levels of 6 kV, 6.3 kV, 10 kV, 10.5 kV, and 11 kV, with a low voltage output of 0.4 kV, making it suitable for mainstream 10 kV/0.4 kV distribution scenarios.
Q
What safety certifications does the S11 oil-immersed transformer hold?
The S11 series has passed ISO9001 quality management system certification and China's national 3C (CCC) compulsory certification. It is equipped with multiple safety protection devices including pressure relief valves and gas relays, and is designed for reliable operation in extreme temperatures ranging from -40°C to 60°C.
Q
How does the fully sealed design benefit long-term operation?
The fully sealed oil tank structure completely isolates the transformer oil from the air, preventing oxidation, moisture absorption, and oil deterioration. This design fundamentally extends the service life to over 25 years, reduces maintenance frequency, and lowers the total cost of ownership over the equipment's lifetime.
Q
What is the function of the corrugated plate radiator in the S11-M series?
The corrugated plate radiator in the S11-M series uses the natural thermal expansion and contraction of the corrugated plates as oil temperature changes, effectively replacing the traditional oil conservator. This innovative design reduces the overall equipment footprint, simplifies the appearance, and makes installation and maintenance more efficient.
Q
What application scenarios is the S11 oil-immersed transformer suitable for?
The S11 series is suitable for a wide range of applications including industrial factories, urban power distribution networks, commercial buildings, and new energy projects. Its compact structure, customizable design, and wide capacity range make it a versatile and reliable core power equipment for both standard and demanding environments.