S13 Oil Immersed Distribution Transformer

The S13 oil-immersed power distribution transformer is a three-phase oil-immersed power distribution transformer produced by Yibaling Factory.

It is a three-phase power equipment that has achieved key performance upgrades on the basis of a traditional reliable structure.

The core advantages are reflected in two targeted improvements:

The body of the S13 oil immersed power distribution transformer adopts a new insulation structure and mechanical reinforcement design.

For instance, by enhancing the winding compression system, using high-strength insulation pads, and adopting a better lead wire fixation method, this significantly improves the stability of the S13 oil immersed power distribution transformer when subjected to sudden short-circuit currents, thereby reducing the risk of faults and ensuring the resilience of power grid operation.

The core of the S13 oil immersed power distribution transformer's iron core is made of high magnetic permeability and low-loss high-quality cold-rolled oriented silicon steel sheets (such as 30ZH120 or similar materials), and is assembled using a stepped joint full bevel joint process.

This combination minimizes the magnetic resistance and eddy current losses in the iron core, resulting in a significant reduction in the no-load loss (Po) and load loss (Pk) of the transformer.

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Working Condition

1. Altitude

The standard design of the S13 oil immersed distribution transformer is applicable to areas with an altitude of no more than 1000 meters. When the altitude of the installation location exceeds this limit, due to the thin air, the heat dissipation efficiency will decrease and the external insulation strength will be reduced.

In this case, the capacity must be reduced according to national standards for use, and the insulation distance may need to be corrected. Generally speaking, for every 100 meters increase in altitude, the recommended continuous load capacity of the transformer is suggested to be reduced by approximately 0.3-0.5%.

2. Ambient Temperature

The normal operating ambient temperature conditions for the S13 oil immersed distribution transformer are as follows:

Maximum temperature: +40℃. This temperature is the temperature in a shaded and well-ventilated environment, not the surface temperature of the equipment under direct sunlight.

Average maximum monthly temperature: not higher than +30℃.

Maximum annual average temperature: not higher than +20℃.

Outdoor minimum temperature: not lower than -25℃. In the lowest temperature environment, it is necessary to ensure that the insulating oil used for the S13 oil immersed distribution transformer has corresponding low-temperature performance (such as a freezing point lower than the ambient temperature) to ensure the normal startup and circulation.

Core Advantage

Compared with similar products on the market of the same specification, the core advantage of the S13 oil immersed distribution transformer lies in its achievement of a synergistic breakthrough in energy efficiency level, full life cycle economy and operational reliability.

1. Energy Efficiency Level

The S13 transformer achieves a 25%-30% reduction in no-load loss and a 10%-15% reduction in load loss compared to the S11 oil-immersed distribution transformer, fully meeting the national standard of first-level energy efficiency.

Moreover, it operates quietly, with noise controlled within 45 decibels, and has stronger overload capacity and anti-short-circuit impact resistance.

And the fully sealed oil tank and better insulation system make maintenance convenient and the service life longer.

2. High Cost Performance

For customers, this directly means saving on electricity costs. Taking a commonly used 1000kVA transformer as an example, the S13 oil immersed distribution transformer can save approximately 12,000 kWh of electricity per year.

3. Runtime Performance

At the same time, the design is very practical:

Compact structure, high protection level (IP55), capable of stable operation in spaces with limited space, special environments of new energy power stations, or humid coastal areas.

The oil is environmentally friendly and safe, and it is equipped with dual pressure protection and gas protection.

FAQ

Q: Compared to the older models (such as S9, S11 oil immersed distribution transformers), what are the core energy efficiency and economic advantages of the S13 oil immersed distribution transformer?

Specifically, its no-load loss (P0) is on average reduced by approximately 20-30% compared to the S11 oil immersed distribution transformer, and its load loss (Pk) is on average reduced by approximately 15-20%.

From an economic perspective, this leads to a better total cost of ownership (TCO). Although the initial purchase cost is slightly higher, the significantly reduced energy loss costs over the entire life cycle of the transformer (typically 20 years or more) can often be recovered within a few years, making long-term use more cost-effective.

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