Efficient three-phase oil transformer

I. Product Introduction

Transformers are classic high-efficiency distribution transformers.transformersEnergy-saving products, mainly covering oil-immersed types and their corresponding dry-type derivatives, are widely used in 10 kV and 35 kV power distribution systems. They are used as the primary equipment for transmitting and converting electricity, connecting high-voltage power grids and power-consuming terminals.

II. Specifications and parameters (customizable)

(i) General basic parameters

· Voltage level: 10kV/0.4kV (normal flow), 35kV/10.5kV (optional for oil immersion), fully compatible with national power grid distribution standards, ensuring smooth connection to the power grid;

· Connection group marking: Dyn11, YD11 (normal), which can be customized according to the actual needs of the power grid to ensure the stability and stability of power transmission;

· Short circuit impedance: 6%, 7% (normal), the winding design is optimized to strengthen the short circuit resistance, effectively resisting sudden short circuit and reducing the probability of equipment failure;

· Insulation level: Oil immersion adopts Grade A thermal insulation, dry immersion adopts Grade F epoxy resin, which has excellent efficiency, ensuring long-term stable operation under the designed conditions;

(II) Specific parameters

· Power rating: 100kVA-20000kVA covering small, medium and large power ranges, 100kVA-500kVA for residential and small commercial projects, 630kVA-20000kVA for industrial and power scenarios;

· Cooling method: AN (oil immersion self-cooling), ON (oil circulation forced cooling) (optional for large capacity versions), corrugated oil tank or flat tank heat dissipation design, good heat dissipation effect, low temperature rise, suitable for long-term outdoor work;

· Voltage regulation method: no-load voltage regulation (normal), load voltage regulation (optional), voltage regulation range ±2×2.5%, which can adjust the output voltage according to the fluctuations of grid voltage to ensure stable power quality;

· Loss parameters: no-load loss is 20%-30% lower than S11 series, load loss is 15%-25%, long-term operation can significantly save electricity costs, and the payback period of investment is about 3-5 years;

· Protection level: IP54 (outdoor normal version), the surface of the oil tank is treated with phosphate and anti-corrosion coating, which has good moisture resistance, anti-corrosion and salt water resistance, adapting to harsh outdoor conditions;

· Core materials: high-quality cold-rolled silicon steel sheet (thickness 0.30-0.35mm), oxygen-free copper winding, which improves magnetic and electrical conductivity, reduces iron and copper loss, and improves equipment efficiency.

(III) Specific parameters

· Rated power: 10KVA-5000KVA, mainly used for indoor power distribution in premises such as residential areas, office buildings and small industrial workshops;

· Cooling method: AN (self-cooling), AF (forced air cooling) (optional), the winding is designed with heat dissipation channels, which improves the heat dissipation efficiency and can adapt to short-term overload;

· Voltage regulation method: no-load voltage regulation, voltage regulation range ±2×2.5%, simple operation, stable voltage regulation, ensure the stability of terminal power supply;

· Loss parameters: The no-load loss is 15%-20% lower than SCB11 series, which meets the standard of Class 2 energy efficiency, and some high-end models can reach Class 1 energy efficiency with significant energy saving;

· Noise level: ≤58dB, oil-free operation, no mechanical vibration, suitable for sensitive situations such as hospitals, schools and office buildings;

· Protection level: IP20-IP54 (adjustable), vacuum epoxy resin winding, moisture-proof, dust-proof, anti-corrosion, small partial discharge, and safe and reliable operation;

· Core materials: high permeability cold rolled silicon sheet core, full copper or copper foil winding, good thermal stability, strong overload capacity and not easy to age.

III. Main Features

The specific features are as follows:

(I) General basic characteristics

1. High energy efficiency and energy saving: The entire series uses high-quality cold-rolled silicon steel and full copper windings, with an optimized magnetic circuit design, significantly reducing iron and copper losses. Compared with the S11 series, no-load losses are reduced by 20%-30%, and load losses are reduced by 15%-25%.

2. Stable and reliable operation: The winding has a reasonable design with high mechanical strength, and the core clamp is rigid, effectively withstanding sudden short circuits and preventing equipment damage. The insulation material is of high quality, with good insulation, low partial discharge, no magnetic leakage, and no overheating, ensuring long-term stable operation, and a lower failure rate than traditional transformers.

3. Low noise and environmental protection: Through the optimization of magnetic circuit design, shock absorption treatment and the selection of high-quality materials, the noise level of the equipment is effectively reduced: oil type is ≤65dB and dry type is ≤58dB, which meets the environmental protection requirements of residential areas, commercial areas and other scenarios.

4. Easy Maintenance and Durability: The entire series utilizes a maintenance-free or low-maintenance design. The S13 oil-immersed transformer features a fully sealed design, eliminating the need for an oil preservative, preventing oil leakage, reducing the frequency of oil inspection and replacement, and lowering operating and maintenance costs.

5. Good compatibility and flexible installation: The marking of voltage level, capacity, and connection group of the S13 series can be customized according to the actual needs of the power grid and users, which is well suited to the existing power distribution system; the oil type is compact in structure, light in weight, easy to transport and install, suitable for outdoor installation.

IV. Application Scenarios

1. Residential areas: commercial residential areas, villas, etc., installed in indoor power distribution facilities, no oil, no risk of explosion, low noise, no impact on the lives of residents, providing stable power supply for household appliances, elevators, lighting and other equipment.

2. Urban buildings: high-rise buildings, office buildings, hotels, shopping centers and other indoor spaces, with a compact design, space saving, no special oil shaft, adaptation to the internal power distribution scheme, ensuring the stable operation of office equipment, air conditioning, lighting and other systems.

3. Sensitive places: hospitals, schools, libraries, theaters and other densely populated places with high requirements for safety and environmental protection, no oil pollution, no noise interference, safe and reliable operation, ensuring the normal operation of medical equipment, educational equipment and other sensitive equipment.

4. Small and medium industrial workshops: small and medium factories, workshops, etc. with low power demand, indoor installations, moisture-proof and dust-proof, adapting to the indoor production environment, ensuring stable power supply for production equipment.

5. Renovation of old urban areas: old urban areas, city centers and other areas with limited space, replace traditional oil-immersed transformers, compact structure, simple installation, realize nearby power distribution, reduce the power supply radius and improve the quality of power supply.

About Us

Xinda Transformer Co., Ltd. is located at No. 38, Jingsan Road, Fenghuang Industrial Park, Dongchangfu District, Liaocheng City, Shandong Province, China. The company's registered capital is 150 million yuan and covers an area of ​​approximately 186,667 square meters (280 mu). It is recognized as a national high-tech enterprise, a technological innovation demonstration enterprise of Shandong Province, an excellent private technology enterprise of Shandong Province, a model base for the employment of persons with disabilities, a contract-fulfilling and trustworthy enterprise of Shandong Province, a technology center of Liaocheng Municipal Enterprise, an excellent industrial enterprise of Dongchangfu District, a science and technology demonstration enterprise of Dongchangfu. and a key enterprise of Dongchangfu District.

The annual production capacity is 9,000 MVA. The total construction area of ​​office buildings, R&D, and standardization workshops is 53,000 square meters. Equipped with more than 470 sets of advanced production equipment, the company has a production capacity of 10,000 MVA for transformers up to 220 kV, as well as auxiliary distribution equipment systems. With qualifications in power general contracting and a specialized technical construction team, Xinda is one of the leading power transformer manufacturers in China, excelling in R&D, production, and integrated engineering services.