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China S11/S13 Oil-Immersed Transformer Suppliers - High-Performance Copper Winding Factory Products
Core Product Advantages
1
Outstanding Economic Benefits & Significant Energy Savings
Compared with the traditional S9 series, the S11 series has an average reduction of 30% in no-load loss, a significant decrease of 70% to 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.
4
Compact Structure Design — Less Space Required
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. 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 is suitable for various applications including 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 oil-immersed transformer?
The S11 series offers a 30% reduction in no-load loss, a 70%–85% decrease in no-load current, and an additional 15% reduction in total loss compared to national standards. It also features a fully sealed oil tank design and corrugated plate radiators, making it significantly more energy-efficient and longer-lasting than the S9 series.
Q
What is the expected service life of the S11 oil-immersed transformer?
Thanks to its fully sealed structure that prevents oil oxidation and moisture absorption, the S11 series transformer is designed to deliver a service life of over 25 years, reducing the need for frequent maintenance or replacement.
Q
What certifications does the S11 series oil-immersed transformer hold?
The S11 series has passed ISO9001 quality management system certification and national 3C compulsory certification, ensuring it meets strict quality and safety standards for reliable operation in demanding environments.
Q
In what temperature range can the S11 transformer operate reliably?
The S11 series is engineered to operate stably across a wide temperature range of -40°C to 60°C, making it suitable for use in both extreme cold and high-temperature environments without compromising power transmission.
Q
What capacity and voltage options are available for the S11-M series?
The S11-M series covers a capacity range from 10 kVA to 2500 kVA. The voltage levels are designed for mainstream scenarios of 10 kV / 0.4 kV, with high-voltage options including 6, 6.3, 10, 10.5, and 11 kV, and tapping options of ±5% or ±2×2.5%.
Q
What types of applications 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, and new energy projects. Its compact corrugated plate design, customizable specifications, and easy installation make it an ideal core power equipment for diverse scenarios.