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Electric Transformer Oil-Immersed Transformer S11/S13 Manufacturer Copper Silicon Steel Sheet Hot-Selling Item
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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% 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. Please provide the text you would like translated.
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. Please provide the text you would like translated.
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. Please provide the text you would like translated.
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. Please provide the text you would like translated.
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 | |||||
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FAQ
Find answers to common questions about S11 and S13 oil-immersed transformers, including efficiency, copper windings, tap changing, impedance, testing and project customization.
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What is the difference between S11 and S13 oil-immersed transformers?
Both S11 and S13 are three-phase oil-immersed distribution transformer series. The main difference is generally in the loss-performance level and design generation. S13 transformers are typically designed with lower no-load and load losses than earlier S11 designs. The final selection should be based on the required efficiency level, project specification, operating hours, and budget.
What voltage and capacity can be provided?
The transformer capacity and voltage ratio can be configured according to the project requirements. Typical information required includes: * Rated capacity * Primary voltage * Secondary voltage * Frequency * Vector group * Tap range Please provide your electrical system parameters so that the correct transformer configuration can be selected.
Does this transformer use copper windings?
Yes, this product series can be configured with **copper windings** according to the project specification. Copper windings provide good electrical conductivity and are widely used in distribution transformers. The conductor material should be clearly confirmed in the quotation and approved technical datasheet before production.
What type of core material is used?
The transformer uses a laminated magnetic core made from suitable electrical silicon steel. The core design and manufacturing process are important factors affecting: * No-load loss * No-load current * Noise * Operating efficiency The exact core specification depends on the transformer design and required loss level.
How does the S11 / S13 design help reduce energy losses?
The transformer is designed to reduce both no-load and load losses through optimized core, winding, insulation, and structural design. Lower transformer losses can reduce long-term operating energy consumption, especially in applications where the transformer remains energized continuously. The final guaranteed loss values should be confirmed in the approved technical datasheet.
Is the transformer suitable for outdoor installation?
Yes. Oil-immersed distribution transformers are commonly used for outdoor installation in: * Industrial plants * Distribution networks * Commercial projects * Infrastructure facilities * Utility substations However, site conditions such as ambient temperature, altitude, humidity, pollution level, and installation environment should be confirmed before final design.
What tap-changing method can be provided?
The transformer can be configured with a suitable tap-changing arrangement according to the project requirements. For an **off-circuit tap changer**, the transformer must be completely de-energized before adjusting the tap position. If the project requires voltage regulation while energized, an on-load tap-changing design should be specified separately.