10kV S20series Oil Immersed Distribution Transformer

Oil-immersed transformers use oil as the main insulation means of transformers, and rely on oil as a cooling medium, such as oil-immersed self-cooling, oil-immersed air cooling, oil-immersed water cooling and forced oil circulation. The main components of the transformer are iron core, winding, oil tank, oil pillow, respirator, explosion-proof pipe (pressure relief valve), radiator, insulating sleeve, tap switch, gas relay, thermometer, oil purifier, etc. The oil-immersed transformer silicon steel sheet layer, due to long-term immersion in the transformer, oil can penetrate into it, and the transformer oil has elasticity and acts as a buffer, so the oil-immersed transformer has low noise.

The working principle of the oil-immersed transformer is based on the principle of electromagnetic induction, and the voltage conversion is achieved through the interaction between the iron core and the winding. ‌ When alternating current passes through the primary winding (main coil), an alternating magnetic field will be generated in the iron core, and this magnetic field will pass through the secondary winding (secondary coil), thereby generating an induced electromotive force in the secondary winding. If the secondary winding is connected to a load, a current will be formed to complete the power transmission.

All series of products are suitable for 10kv/12kv/20kv/24kv/35kv power distribution systems, which can be used for residential areas, commercial streets, industrial and mining enterprises, urban and rural power grid transformation, etc.
High-rise buildings: Due to the special power supply needs of high-rise buildings and large power loads, there are also high requirements for power supply quality and stability. The use of oil-immersed transformers can provide stable power support and ensure the safety of people and equipment. In addition, when the quality of survival power is high, the oil-immersed transformer has overload capacity and can cope with instantaneous or periodic load peaks.
Industrial and mining enterprises: The production equipment of industrial and mining enterprises not only consumes a lot of power, but also wastes a lot of power during operation, which requires the power supply system to meet high load and high stability requirements. Oil-immersed transformers can be used as voltage stabilizing devices for industrial and mining enterprises to effectively solve the problems of power fluctuations and voltage fluctuations and ensure stable operation of equipment.
Urban rail transit: Urban rail transit is a high-standard and high-demand modern transportation tool, and the power supply has high requirements in accordance with national standards. Oil-immersed transformers can withstand high loads and high frequencies in such extreme environments, meeting the needs of urban rail transit equipment.
Urban and rural power grid transformation: Oil-immersed transformers are suitable for urban and rural, industrial and mining power grid transformation, and are more suitable for combined transformers and prefabricated transformers for substations.

Temperature and humidity: Oil-immersed transformers are suitable for ambient temperatures ranging from -25°C to 40°C, with a maximum daily average temperature of 30°C, a maximum annual average temperature of 20°C, and a relative humidity of no more than 90% (at 25°C). For transformers used outdoors, the minimum temperature is -25°C; for transformers used indoors, the minimum temperature is -5°C.
Altitude: The operating altitude of oil-immersed transformers is ≤1000 meters. Special design is required for altitudes exceeding 1000 meters.
Fire safety: When installing and using oil-immersed transformers, attention should be paid to fire safety. For example, the fire separation distance between a transformer with an oil volume of more than 2500kg and an oil-filled electrical device with a volume of 600kg-2500kg shall not be less than 5 meters. If the fire separation distance between two adjacent oil-immersed transformers does not meet the installation requirements, a fire wall or a fireproof water curtain on the top of the fireproof partition wall is required.
Power supply voltage: The waveform of the power supply voltage should be similar to a sine wave, and the power supply voltage of a three-phase transformer should be approximately symmetrical.

S20 (22)-M series fully sealed 10KV (12KV) (20KV) (24KV) (35KV) series three-phase oil-immersed power transformer
Product overview:
The main features of S20 transformer include:
High efficiency: S20 transformer adopts advanced materials and technology and has high efficiency, which can reduce energy loss and improve energy utilization efficiency.

Energy saving and environmental protection: Due to its high efficiency, S20 transformer can significantly reduce energy waste and carbon emissions, meeting the needs of energy saving and environmental protection.

Reliable operation: S20 transformer has a high degree of reliability and stability, and can operate stably in various environments, reducing faults and maintenance needs.

Easy to install and maintain: S20 transformer has a compact structure, easy installation and maintenance, which can save installation and maintenance costs.

Long life: Due to its efficient, stable operation and durable materials, the S20 transformer has a long life, which can reduce the frequency of replacement and maintenance.

Strong adaptability: S20 transformer has a wide range of applications and can be used in a variety of different power systems and equipment to meet various needs.

Safe and reliable: S20 transformers comply with various national and international safety standards and can ensure safe and reliable operation1.

Energy efficiency level: S20 energy-saving transformer complies with the Chinese national requirements for secondary energy efficiency standards for power transformers in "GB20052-2020 Energy Efficiency Limits and Energy Efficiency Levels of Power Transformers" and is a high-efficiency energy-saving transformer2.

Design features: The S20 energy-saving transformer adopts a three-phase design, and the coil structure is a non-circular concentric coil. This design can optimize the magnetic flux distribution and reduce the magnetic resistance, thus improving the efficiency of the transformer. At the same time, the S20 energy-saving transformer also uses high-quality insulation materials and cooling systems to ensure stable operation and long life of the transformer2.

Capacity range: S20 energy-saving transformer has a wide range of capacities, including 30KVA, 50KVA, 80KVA, 100KVA, 125KVA, 160KVA, 200KVA, 250KVA, 315KVA, 400KVA, 500KVA, 630KVA, 800KVA, 1000KVA, 1250KVA, 1600KVA, 2000KVA, 25 00KVA, 3150KVA, etc.
Various specifications. This enables the S20 energy-saving transformer to adapt to power systems of different sizes and needs, providing reliable power support for various application scenarios2.

Environmental protection: Environmental protection factors are fully considered during the design and manufacturing process of S20 energy-saving transformer. It uses environmentally friendly materials and processes to reduce environmental pollution during the production process. At the same time, due to its efficient energy utilization performance, the S20 energy-saving transformer can reduce energy consumption and carbon dioxide emissions during operation, contributing to environmental protection2.

Economic benefits: Although the initial investment of the S20 energy-saving transformer may be relatively high, due to its significant energy-saving effect and long life, it can bring considerable economic benefits to users in long-term use. By reducing the energy consumption and operating costs of the power system, S20 energy-saving transformers can help users achieve the goals of energy conservation, emission reduction and operating cost reduction2.

To sum up, the S20 transformer is an efficient, reliable, energy-saving and environmentally friendly power equipment that has many advantages and can meet various needs. It is widely used in electric power, industry, commerce and other fields and is an ideal choice for modern power systems.

Table 1 10KV class 30KVA~2500KVA non-excitation voltage regulating distribution transformer

Table 2 20KV Class 50KVA~2500KVA Non-excitation Voltage Regulating Distribution Transformer

Table 3 35KV class 50KVA~2500KVA non-excitation voltage regulating distribution transformer

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