Three Phase Pad Mounted Transformer

Product Introduction

The S10 series is a high-reliability three-phase oil-immersed distribution transformer, which is an upgraded and energy-saving version of the traditional S9 series. It adopts a fully sealed corrugated tank structure, which effectively isolates external air and moisture, slows down the aging speed of insulating oil, and ensures stable performance, low energy loss and long service life during long-term operation. With its balanced performance, reasonable cost and easy maintenance, this series is widely used in urban and rural power grids, industrial and mining enterprises, old distribution network renovation projects, as well as indoor and outdoor power distribution scenarios such as residential districts, factories and small and medium-sized commercial places.

Model Explanation

· • S: Abbreviation for Three-phase, indicating that the transformer is suitable for three-phase AC power supply systems, which can meet the large-scale power demand of industrial and civil fields and ensure stable and continuous power supply.

· • 10: Performance series code, representing the performance level of the transformer, corresponding to the national Level 2 energy efficiency standard, with lower loss and more stable operating performance compared with the S9 series, and higher cost performance compared with the S11 series.

· • M: Abbreviation for Sealed corrugated tank, indicating that the transformer adopts a fully sealed corrugated tank design without an oil conservator, which can realize maintenance-free and leak-proof performance, reduce later operation and maintenance costs, and adapt to harsh outdoor environments.

· • Rated Voltage: 10kV/0.4kV, which is the mainstream voltage level of domestic distribution networks. The high-voltage side is 10kV, and the low-voltage side is 0.4kV, which is perfectly suitable for most industrial and civil power distribution scenarios.

Technical Parameters(Customizable)

· • Rated Capacity: 30kVA–2500kVA, covering 18 common specifications from small to large, which can be flexibly selected according to the actual power demand of users, including 30kVA, 50kVA, 80kVA, 100kVA, up to 2500kVA, meeting the needs of different scales of power distribution.

· • Voltage: 10±5%/0.4kV, the high-voltage side has a voltage regulation range of ±5%, which can flexibly adjust the voltage according to the fluctuation of the power grid, effectively avoiding voltage instability and ensuring stable output voltage for electrical equipment.

· • Tap changer: Off-circuit tap changer, which needs to be operated under power failure, with simple operation, reliable contact, long service life and low failure rate; on-load tap changer can be customized according to user needs to realize voltage regulation without power failure for special scenarios.

· • Cooling: ONAN (Oil Natural Air Natural), which is oil-immersed self-cooling mode, with stable heat dissipation efficiency, simple structure, low failure rate, suitable for conventional load operation; ONAF (forced air cooling) can be selected as needed to improve load capacity by 20%-30%.

· • Connection group: Dyn11 / Yyn0, Dyn11 is the mainstream connection mode, which has strong short-circuit withstand capability, stable voltage waveform and good compatibility, suitable for most industrial and civil power distribution scenarios; Yyn0 is optional for small-capacity civil scenarios.

· • Insulation class: Class A, the maximum temperature of the top oil is ≤105℃, the insulation performance is stable and reliable, the breakdown voltage of the insulating oil is ≥30kV, and the partial discharge is ≤10pC, which can effectively extend the service life of the transformer to more than 15 years.

· • Energy efficiency: GB 20052 Level 2, which meets the national Level 2 energy efficiency standard, with no-load loss 20%-30% lower than S9 series, realizing obvious energy-saving effect and balancing energy saving and cost.

Main Features

· • Lower loss than S9, energy-saving: Adopting high-quality cold-rolled silicon steel sheets and optimized magnetic circuit design, the no-load loss and load loss are significantly lower than those of the S9 series, reducing electricity consumption during long-term operation, saving energy and reducing costs, and meeting the basic energy-saving requirements of the power grid.

· • Fully sealed, maintenance-free, leak-proof: The fully sealed corrugated tank structure without an oil conservator can effectively isolate air and moisture, avoid the aging and dampness of insulating oil, and realize no oil change and no core lifting during normal operation, which is maintenance-free and leak-proof, greatly reducing later operation and maintenance costs and labor input.

· • Stable structure, strong short-circuit withstand: The windings are wound with high-quality copper conductors, with reasonable structure and firm fixing. The iron core and windings are tightly combined, which can effectively withstand the mechanical stress caused by sudden short circuits, avoid winding deformation and core displacement, and ensure stable and reliable operation.

· • Low noise, reliable operation: With optimized magnetic circuit design and high-quality core materials, the operating noise is controlled at 50-58dB(A), which meets the national standard requirements, and the operation is stable and reliable, with a failure rate of ≤0.5% per year, suitable for most non-sensitive noise scenarios.

· • Low cost, easy installation: It has high cost performance, lower initial purchase cost compared with S11 series, and balanced performance and cost. The structure is compact and light in weight, the installation process is simple, no complex installation equipment is needed, and it can be quickly adapted to outdoor pole-mounted, indoor and box-type substation installation scenarios.

Application Scenarios

· • Urban and rural power grids: It is widely used in rural power distribution, urban community power supply and urban and rural power grid upgrading and renovation, which can effectively improve the efficiency of power supply, reduce power grid loss and ensure stable power supply for residents and public facilities.

· • Industrial and mining enterprises: Suitable for small and medium-sized factories, mines, oilfields, chemical enterprises and other industrial fields, providing stable and efficient power supply for production equipment, and adapting to general load and continuous operation scenarios.

· • Substations, box-type substations: As the core power distribution equipment, it can be used with box-type substations, and is suitable for underground substations, outdoor power distribution stations and unattended power distribution points, with stable operation and low maintenance cost.

· • Old distribution network renovation: As an upgraded product of the S9 series, it is the preferred equipment for the renovation of old distribution networks, old factories and old residential districts, which can directly replace high-loss S9 transformers, realizing energy saving, cost reduction and stable power supply, and meeting the basic renovation needs.

About Us

Xinda Transformer Co., Ltd. is located at No. 38, Jinsan Road, Fenghuang Industrial Park, Dongchangfu District, Liaocheng City, Shandong Province, China. The company has a registered capital of RMB 150 million and covers an area of approximately 186,667 square meters (280 mu). It is recognized as a National High-Tech Enterprise, a Shandong Province Technology Innovation Demonstration Enterprise, an Excellent Private Technology Enterprise of Shandong Province, a Shandong Model Base for Employment of the Disabled, a Shandong Province Contract-Honoring and Trustworthy Enterprise, a Liaocheng Municipal Enterprise Technology Center, an Excellent Industrial Enterprise of Dongchangfu District, a Science and Technology Innovation Demonstration Enterprise of Dongchangfu District, and a Key Backbone Enterprise of Dongchangfu District.

The annual production capacity is 9,000 MVA. The total construction area of office buildings, R&D facilities, and standardized workshops is 53,000 square meters. Equipped with over 470 sets of advanced production equipment, the company possesses a manufacturing capacity of 10,000 MVA for transformers up to 220 kV, along with complementary switchgear systems. With qualifications in Power Engineering General Contracting and a dedicated technical construction team, Xinda ranks among the leading power transformer manufacturers in China, excelling in R&D, manufacturing, and integrated engineering services.