S11 Distribution Transformer

Zhejiang Yibaling Power Equipment Co., Ltd. is a professional China transformer manufacturer specializing in the production of S11 distribution transformers. We have been in the field for many years. Our transformers feature excellent quality and an extremely high cost-performance ratio, and they have covered most of the European and American markets. We look forward to becoming your partner.

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Product Description

The S11 distribution transformer is an innovative oil-immersed distribution transformer with a fully sealed structure design, offered by the professional supplier in China, Yibaling.

What Breakthroughs Does This Product Offer?

Compared with ordinary oil-immersed transformers, the most significant technical breakthrough of this product lies in completely eliminating the traditional open-type oil reservoir.

The corrugated plates of the tank replace the oil pipes as the cooling and heat dissipation components. The corrugated plates can expand and contract along with the expansion and contraction of the transformer oil volume, thereby isolating the transformer from the atmosphere and fundamentally preventing oxygen and moisture in the air from entering.

This can prevent and slow down the deterioration of the oil and insulation moisture absorption, significantly enhancing the operational reliabilityr.

Due to the elimination of the main aging causes of the S11 distribution transformer, the insulation medium inside the transformer can maintain a better state throughout its entire life cycle. This enables the transformer to achieve true maintenance-free operation under normal conditions.

Users no longer need to perform traditional oil level checks, oil replenishment, and regular oil quality filtration treatments, significantly reducing the operation and maintenance costs and human work risks.

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Working Condition of the S11 Distribution Transformer

Environmental dimension	Specific requirements and parameters	Technical description and impact
Altitude	≤ 1000 meters (standard design reference)	When the altitude exceeds 1000 meters, the thin air leads to a decrease in heat dissipation capacity. The rated capacity must be reduced (typically, for every 100 meters of elevation increase, the capacity decreases by approximately 0.4%). At the same time, the external insulation strength must also be considered.
Environmental temperature	Maximum temperature: +40℃ (shaded area), Average temperature in the hottest month: +30℃, Minimum temperature: -30℃ (outdoor type, depending on the oil)	High temperatures accelerate insulation aging; the minimum temperature limit directly depends on the pour point of the transformer oil (for example, if using 45# oil with a -35℃ pour point, it can adapt to an -30℃ environment). It is necessary to ensure that the oil can circulate normally at low temperatures.
Installation location	Outdoor or indoor (outdoor is the primary application scenario)	The fully sealed corrugated oil tank and IP68 protection level design make it inherently suitable for outdoor use, capable of directly withstanding sunlight, rain, and sandstorms. Indoor installation requires ensuring ventilation.
Air humidity	≤ 90% (at 25℃)	With a fully sealed structure, the interior has been isolated. This requirement mainly concerns the external terminals, bushings and the enclosure's anti-corrosion. In high-humidity and salt-spray environments, a strengthened anti-corrosion coating must be selected.
Installation foundation	Solid, flat, capable of bearing weight, and inclined towards the side where oil is discharged in case of an accident with a slope.	The foundation must be able to withstand the full weight of the oil and the short-circuit electric force. The slope ensures that in case of an accident, the oil drains into the collection pit, which is in accordance with safety standards.
Atmospheric conditions	Normal polluted environment, without severe corrosive gases.	Suitable for general urban and rural environments. In heavily polluted or corrosive environments such as chemical plants and coastal areas, it is necessary to select reinforced external insulation bushings (anti-flashover type) and special anti-corrosion paints.

Product Feature

The S11 distribution transformer is a fully sealed distribution equipment that integrates high reliability, excellent energy efficiency, and user friendliness.

The core concept of the design lies in the fully sealed, maintenance-free structure:

By replacing the traditional oil reservoir with an innovative corrugated oil tank, the internal and external atmosphere are permanently isolated, fundamentally preventing oil deterioration and insulation moisture absorption. Thus, without the need for manual maintenance of the oil system, it ensures long-term operational stability and safety.

Based on this, the S11 distribution transformer achieves the unity of robustness, efficiency, and aesthetics:

Sturdy and reliable: The structure has been strengthened, with the corrugated tank and reinforced windings providing excellent short-circuit resistance and mechanical strength, enabling it to adapt to outdoor environments and withstand impact loads.

Highly efficient and energy-saving: The core uses high-loss, high-quality cold-rolled silicon steel sheets and advanced core manufacturing processes, resulting in significantly lower no-load and load losses compared to previous models, achieving higher operational efficiency and directly reducing the total life cycle electricity costs.

Compact and aesthetically pleasing: The integrated corrugated heat dissipation structure makes the appearance of the transformer compact, neat, and full of modern industrial aesthetics. At the same time, the reasonable layout also makes installation and wiring more convenient.

Through systematic engineering design, this product provides high carrying capacity and high safety while minimizing operating energy consumption and maintenance requirements. It is a classic preferred solution for outdoor distribution scenarios that aim for long-term reliable operation and comprehensive economy.