I. Product Introduction
The S Series 10kV power transformers are among our company’s core products. Designed specifically for 10kV power distribution systems, they feature high-temperature resistance, low loss, and low noise, while ensuring long-term operational stability. Primarily used for voltage transformation and power distribution, these transformers are suitable for applications with high requirements for energy efficiency and reliability, such as urban power distribution networks, industrial parks, and residential communities. The product employs a proven oil-immersed design that ensures superior electrical performance while comprehensively optimizing loss and noise metrics, making it a highly efficient and energy-saving distribution device.
II. Technical Specifications
Note: The dimensions, weight, and other specifications provided above are for design and selection purposes only. Final specifications are subject to the product as shipped. Customization options for other models are available upon request.
S22-M-30–2500/10 Distribution Transformer (Energy Efficiency Class 1) | High Voltage (kV): 6, 6.3, 10, 10.5 Low Voltage (kV): 0.4 Tap Range: ±5, ±2×2.5% Connection Group: Dyn11 Yyn0 | |||
| Rated Capacity(kVA) | No-Load Loss (kW) | Load Loss (kW) (75℃) | No-Load Current(%) | Short-Circuit Impedance(%) |
| 30 | 65 | 455/430 | 1.5 | 4 |
| 50 | 80 | 655/625 | 1.3 | 4 |
| 63 | 90 | 785/745 | 1.2 | 4 |
| 80 | 105 | 945/900 | 1.2 | 4 |
| 100 | 120 | 1140/1080 | 1.1 | 4 |
| 125 | 135 | 1360/1295 | 1.1 | 4 |
| 160 | 160 | 1665/1585 | 1 | 4 |
| 200 | 190 | 1970/1870 | 1 | 4 |
| 250 | 230 | 2300/2195 | 0.9 | 4 |
| 315 | 270 | 2760/2630 | 0.9 | 4 |
| 400 | 330 | 3250/3095 | 0.8 | 4 |
| 500 | 385 | 3900/3710 | 0.8 | 4 |
| 630 | 460 | 4460 | 0.6 | 4.5 |
| 800 | 560 | 5400 | 0.6 | 4.5 |
| 1000 | 665 | 7415 | 0.6 | 4.5 |
| 1250 | 780 | 8640 | 0.5 | 4.5 |
| 1600 | 940 | 10440 | 0.5 | 4.5 |
| 2000 | 1085 | 13180 | 0.4 | 5 |
| 2500 | 1280 | 13360 | 0.4 | 5 |
III. Product Features
1. High-Temperature Resistance: By selecting insulation materials and insulating oil with high heat resistance ratings, the product can withstand high ambient temperatures and load fluctuations, ensuring the insulation stability and service life of the power transformer under extreme operating conditions, and providing a solid foundation for stable operation.
2. Low Losses: By optimizing the core magnetic circuit design and coil structure, no-load and load losses are significantly reduced. This meets national energy efficiency standards, helping users lower operating costs. It embodies the core of high-efficiency and energy-saving power transformers, while also indirectly contributing to low noise and stable operation.
3. Low Noise: The use of a stepped-joint core, elastic support structure, and noise-reducing tank design effectively suppresses electromagnetic noise and mechanical vibration. This meets the requirements of noise-sensitive environments such as residential and commercial areas, making the power transformer more environmentally friendly while ensuring stable operation.
4. Stable Operation: The fully sealed structure and comprehensive protection design provide strong resistance to short circuits, moisture, and corrosion. Combined with the comprehensive advantages of high-temperature resistance, low losses, and low noise, this reduces maintenance frequency and ensures continuous power supply reliability.
IV. Company Profile
Shenyang Tiantong Electricity Equipment Co., Ltd. is a high-tech enterprise specializing in the research, development, production, and sales of power transmission and transformation equipment. With years of deep expertise in the power transformer sector, the company is committed to developing high-temperature-resistant, low-loss, low-noise, and stable power transmission and transformation equipment. It maintains a comprehensive R&D system and production management system. The company’s product range includes multiple series of power transformers, such as oil-immersed and dry-type models, which are widely used in power grids, industrial and mining enterprises, and the new energy sector. Thanks to their reliable performance and professional services, the company has earned recognition from customers both domestically and internationally.
V. Production Capabilities
Shenyang Tiantong Power Equipment Co., Ltd. operates a modern production facility equipped with specialized production lines, including high-precision machining equipment, vacuum drying systems, and oil-filling systems. The workshop layout adheres to lean manufacturing principles, enabling end-to-end visual management of the entire production process—from core lamination and coil winding to core assembly and final product inspection. This ensures that every power transformer delivers high-temperature resistance, low-loss performance, and low noise levels from the outset, laying a solid foundation for long-term, stable operation. Additionally, the factory offers guided tours, providing visitors with a firsthand look at core production processes and quality control procedures.
VI. Manufacturing Processes
1. Core Manufacturing: High-permeability grain-oriented silicon steel sheets are used, processed through high-precision longitudinal and transverse shearing. Step-joint technology is employed to reduce no-load losses and noise, laying the foundation for the power transformer’s low-loss and low-noise performance. The core surface is coated with insulating varnish to effectively suppress eddy current losses while enhancing heat resistance, thereby ensuring high-temperature tolerance and operational stability.
2. Coil Process: High-quality electromagnetic wire is selected based on capacity ratings, and a multi-layer cylindrical or continuous winding structure is adopted to ensure the mechanical strength and short-circuit resistance of the coils. Insulation components are made of high-temperature-resistant materials to enhance the overall thermal resistance rating, ensuring stable operation of the power transformer under complex operating conditions, while optimizing the winding structure to achieve low losses and low noise.
3. Tank Construction: Utilizing corrugated tanks or plate-type radiators, treated with anti-corrosion coating and sealing, the design balances heat dissipation performance with outdoor weather resistance. This ensures efficient heat dissipation even in high-temperature environments, achieving high-temperature resistance and stable operation. Additionally, structural optimization reduces vibration-induced noise, highlighting the advantages of low noise and low loss.
VII. Honors and Certifications
The company has obtained certification for the ISO 9001 Quality Management System, ISO 14001 Environmental Management System, and ISO 45001 Occupational Health and Safety Management System. Our products comply with domestic and international standards, including IEC. Thanks to their excellent performance—including high-temperature resistance, low loss, low noise, and stable operation—the S Series 10 kV power transformers have been designated as Grade A suppliers by the State Grid Corporation of China and local power companies.
VIII. Services and After-Sales Support
1. Pre-Sales Services: We provide professional technical consultation and customized solutions. Based on the customer’s load requirements and installation environment, we recommend power transformer models that combine high-temperature resistance, low loss, low noise, and stable operation, and assist with technical briefings and drawing reviews.
2. During-Sales Service: We closely monitor production progress throughout the process, provide factory test reports and ensure safe transportation to guarantee that every power transformer meets the required standards for high-temperature resistance, low loss, and low noise, and is delivered on time. We dispatch technical personnel to guide installation and commissioning to ensure stable equipment operation.
Our factory is in Shenyang City, Liaoning Province.We are a professional factory with more than 30 years experience in the field of High and low Voltage switchgears, Substation ,Transformers,Cable distribution box and various Electrical equipment. Our factory is the excellent supplier of State Grid Corporation od China. *We have more than 30 years to produce different kinds of transformers. *Our factory continue to insist to customers oriented and seek development of technology and science *Our products have high quality and the deep love of our customers *Our products have obtained international certifications such as ISO, CE, IEC certification. *We have a strong supply chain and after-sale service.
We offer OEM/ODM service. Our professional technical and quotation team can provice a satisfied project according to your drawing and parameters.
Our MOQ is 1 piece.
It depends on your product requirement and quantity.
Our core business focuses on the research, development, manufacturing, sales, and maintenance services of power equipment, including transformers, high and low voltage switchgear, and pre-assembled substations. We also provide power engineering construction, technical consulting, and self-operated import/export services, delivering one-stop power equipment solutions and supporting services to domestic and international clients. With years of deep involvement in the power equipment industry, we have accumulated extensive industry expertise.
The company was founded in 1993 and is located in Shenyang City, Liaoning Province. The specific address can be found on the “Contact Us” section of our official website, or you may contact customer service for detailed information.
Our company has obtained ISO 9001 Quality Management System Certification, CE Certification, IEC Certificate, ECM Certification, High-Tech Enterprise Certification, Green Environmental Protection Promotion Enterprise Certification, Environmental Management System Certification, Occupational Health and Safety Management System Certification, Quality Management System Certification, Smart Factory Certification, multiple invention patents, and utility model patents. All operations comply with relevant industry standards in China and target export markets. Certification documents are available for client verification.
Our products/services are primarily categorized into three main groups: New energy power equipment: such as wind and photovoltaic power generation supporting equipment; and services including: smart construction and maintenance, power construction, installation, and maintenance services, and smart construction and maintenance, power construction, installation, and maintenance services. For specific details, please refer to the “Products/Services” section on our official website or contact a sales consultant for a detailed introduction.
Product/service pricing is determined through comprehensive calculation based on product specifications, material standards, service duration, customization requirements, purchase volume, export logistics costs, and other factors. For a specific quote, please contact our sales consultant. After providing your detailed requirements, we will issue a comprehensive quotation proposal. Our pricing is transparent with no hidden fees.
Yes. For clients requiring customization, we can assign a dedicated team to develop a bespoke solution based on your specific needs. This includes: - Electrical equipment functionality, appearance, and specifications - International trade service processes, logistics methods, and customs clearance solutions - Service content, execution procedures, and timelines We ensure all personalized requirements are met.
You may learn more through the following methods: ① View detailed descriptions in the “Products/Services” section of our official website; ② Contact customer service to obtain product manuals; ③ Schedule an in-person demonstration or online presentation through customer service, where professionals will address your questions; ④ Contact customer service to obtain multilingual product materials and export compliance documentation.
The core differences lie in energy efficiency ratings and no-load losses. For industrial parks and scenarios with long-term full-load operation, choose the S20 series for sustained energy savings. For rural grids and scenarios with significant load fluctuations, the S13 series offers better cost-effectiveness. Specific selection should consider on-site conditions, capacity requirements, and installation environments. We provide complimentary selection consultation services.
Our products comply with internationally recognized standards and meet local market access requirements worldwide. We hold certifications such as ISO 9001 and can provide all necessary compliance qualifications and certification documents required by the destination country/region to ensure local customs clearance and usage requirements are met. For specific details, please contact our customer service or sales representatives.
We provide full-process technical support. Nationwide logistics distribution includes wooden crate packaging for impact protection. Export products use packaging compliant with international shipping standards to ensure cargo safety. Installation support includes remote video guidance + printed manuals with one-on-one wiring assistance. For complex projects, customized installation services can be arranged based on project requirements.
The procurement process primarily consists of four steps: ① You submit your procurement requirements (specifications, quantity, delivery time, delivery address); ② We issue a quotation and contract; both parties sign the contract after confirming its accuracy; ③ Payment is made according to the contract terms; ④ We deliver the products/provide the services as specified in the contract and complete the acceptance process.
Yes. For bulk purchasing clients, we offer corresponding volume discounts based on purchase quantity, cooperation duration, and other factors. Specific discount levels can be negotiated with our sales consultants.
We provide full-process foreign trade customs declaration services. The standard procedure is as follows: ① The client provides the Proforma Invoice (PI), packing list, and contract; ② Our company prepares the complete set of documents, including the customs declaration form and commodity inspection form; ③ We handle the declaration; ④ After clearance, we arrange sea/air freight. Supported trade terms include: FOB, CIF, EXW, DAP, etc., which can be flexibly selected based on the client's purchasing preferences.
We support small-batch trial orders and sample requests. ① Sample Scope: Standard accessories and small prototypes are available. ② Delivery Methods: Domestic shipments via standard logistics/courier; international shipments via FedEx/EMS. ③ Cost Details: Samples are free of charge; international shipping fees are borne by the customer.
To reduce the impact of exchange rate fluctuations, it is recommended to adopt multi-currency settlement. Additionally, based on the collaboration cycle, parties may negotiate fixed exchange rate settlement arrangements to minimize the effect of exchange rate volatility on their partnership.
You may submit feedback through the following channels: ① Send an email to tt@ttdl.cn. We will respond within 24 hours. ② Contact your assigned sales representative or customer service agent for assistance with reporting and resolution.
Yes. For customers purchasing our products or utilizing our collaborative services, we offer technical training and operational guidance to help them quickly master product usage and service integration techniques. Should you require technical support afterward, you may contact our technical team at any time. We will respond promptly to resolve any technical issues.
① Email or online customer service inquiries: Response within 24 hours; ② Contact your dedicated sales representative: Receive immediate response and expedited handling; ③ We will rapidly diagnose the cause of the failure and provide solutions through remote communication, operational parameters, and failure symptoms; ④ For on-site service, we will coordinate the optimal technical support plan based on the project location and actual circumstances.
Product returns and exchanges are handled according to the terms of the contract signed by both parties. Customers may submit requests through our after-sales service or sales representatives, providing order details, product information, and relevant explanations. We will review and process the request based on contractual agreements and actual circumstances. Note: Customized products and equipment that have been installed or used generally cannot be returned or exchanged; however, repair and technical support services are available. For products involving export, compliance with international trade, logistics, and customs clearance regulations is also required.
You may contact your assigned sales consultant or customer service representative, provide your order details, and inquire about the real-time progress. For export orders, you can simultaneously track customs clearance and logistics updates. We will also regularly update you on order production, delivery, or service execution to ensure you stay informed.
Specific job openings, qualification requirements, and related details are subject to the information published on the company's official website. Please visit the website for further details.
You may contact customer service online or send an email to tt@ttdl.cn. We will respond within 24 hours.
Our company strictly adheres to national privacy protection laws and regulations, establishing a comprehensive customer information protection system. All customer information is used solely for business coordination and service provision. We will never disclose or sell customer information to third parties without authorization, ensuring the security of customer data. For international trade clients, we additionally comply with privacy protection regulations of the target markets.
We strictly adhere to the laws and regulations of target markets. Our production processes comply with the ISO 14001 Environmental Management System; our products meet the RoHS environmental directive; and overseas projects implement local labor standards, ensuring compliant operations and safeguarding clients from compliance risks in their local business activities.
1. Ultra-low loss characteristics, energy-saving and high power efficiency 2. Low energy cost and ultra-low loss, maintenance-free and pollution-free 3. Low operating temperature, slow insulation aging and long service life of transformer 4. High overload capacity and high mechanical strength 5. Good harmonic resistance 6. Investment returns quickly
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1.Reasonable structure 2.Low loss and light weight 3.Low noise 4.High overload capacity 5.Cost saving
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High-efficiency S13 series transformer with low loss, strong short-circuit resistance and sufficient inventory for fast delivery.
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1、Energy conservation, Stable operation, Highly efficient and Environmentally friendly advantages 2、 Reliable power guarantee for the power distribution system 3、Reduces energy consumption and environmental impact
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1、Safe, Combustion Resistant/Fire Retardant, Without Pollution, Capable of Direct Installation on Load Center； 2、Maintenance Free, Convenient to Install, Low in Composite Operation Cost; 3、 Low Loss, Low Local Discharges, Low Noise, Strong Heat Radiation, Capable of Runing under 150% Nominal Load with the aid of Forced Air Cooling
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