- Home
- About Us
- Products
- News
- Application
- FAQ
- Contact Us
- Resources
Leave Your Message
Precision-engineered instrument and voltage transformers designed for extreme railway duty cycles and dynamic traction load switching.
In modern railway systems, substation transformers represent the critical junction connecting high-voltage national utility grids with dynamic catenary lines and third-rail networks.
Unlike conventional distribution transformers that experience predictable linear loads, railway traction transformers undergo extreme load fluctuations, high-speed train acceleration surges, and frequent short circuits caused by pantograph arcing or lightning events. Our substation units are built with reinforced mechanical clamping and superior short-circuit withstand ratings.
Railway electrification systems (such as 25kV AC single-phase) introduce significant unbalance to the three-phase utility grid. Specialized traction transformers utilize Scott-T, Le Blanc, Woodbridge, or V/v connections to balance the load across 110kV/220kV grid lines while delivering continuous single-phase or two-phase power to catenary segments.
Modern rolling stock equipped with variable-frequency drives (VFD) and onboard IGBT four-quadrant converters generates strong high-frequency harmonics. Our railway transformers integrate custom-designed electrostatic shields, optimized K-factor ratings, and low-loss magnetic cores to eliminate eddy current overheating.
The global transition toward decarbonized freight and high-speed passenger transit has spurred unprecedented infrastructure investment. Modern rail systems require substation transformers capable of operating in diverse topologies: from 25kV / 50Hz or 60Hz Auto-Transformer (AT) feeding systems for high-speed trunk lines, to 750V / 1500V DC 12-pulse and 24-pulse traction rectifier substations for urban metros and light rail transit (LRT).
In the context of the "Belt and Road" Initiative and worldwide cross-border rail corridors, transformers must comply with both IEC and IEEE traction standards while handling severe climatic variations, high-altitude dielectric derating, and aggressive environmental pollution. Yueqing Suian Electric leverages China's premier electrical ecosystem to deliver tailored, robust transformer solutions engineered for uncompromising reliability in mission-critical traction substations.
Yueqing Suian Electric Co., Ltd. — State-Owned Integrity, Central Enterprise Standards
Yueqing Suian Electric Co., Ltd. is a wholly state-owned trading company controlled by Yueqing Liushi Urban and Rural Construction Investment Co., Ltd., with a registered capital of 10 million yuan. It has been deeply involved in the field of electrical product trading. With its solid state-owned background, rich experience in serving central enterprises, and the leading electrical industry ecosystem and location empowerment in China, it is committed to pioneering a new pattern of global electrical trade with the responsibility of a state-owned enterprise, becoming a core partner of the electrical supply chain trusted by global customers, and providing high-standard and reliable electrical products and solutions for overseas markets.
Liushi Town, known as "Zhejiang's No. 1 Industrial Strong Town," achieved a total industrial output value of 106.76 billion yuan in 2024, exceeding 100 billion yuan for two consecutive years and firmly ranking first in Zhejiang Province among the top 1,000 towns in China in terms of comprehensive strength. As a wholly state-owned enterprise, the company, backed by the state-owned capital of the Liushi Town Government, naturally possesses core advantages such as strong financial strength, compliant operation, and strong risk resistance. The company has accumulated extensive cooperative experience in the domestic market, successfully serving numerous leading central enterprises, including China Construction Eighth Engineering Bureau, China Construction Science & Industry Group Co., Ltd., China Construction Second Engineering Bureau, and Sinopec. It has accumulated rich project experience in infrastructure engineering, energy and power, and other fields. Its products and services have passed the stringent standards of central enterprises and possess mature capabilities suitable for large-scale projects and complex scenarios.
Based in Liushi, Yueqing, known as the "Electrical Capital of China" and the "Export Base of Low-Voltage Electrical Appliances in China," the company focuses on core trade in the electrical field. Boasting unparalleled supply chain advantages, it mainly deals in over 200 series and 25,000 models of products, including transformers, high and low voltage electrical equipment, complete sets of electrical equipment, wires and cables, and new energy electrical products. Leveraging state-owned platform resources, the company ensures product quality and supply stability while achieving high cost-effectiveness through the scale effect of industrial clusters, providing diversified product choices for overseas customers. Deeply integrated into the "Belt and Road" initiative, the company excels in connecting with major overseas infrastructure and energy projects, and can provide supporting services for electrical products that meet international standards.
Adhering to the core principles of "integrity as the foundation, compliance as the basis, and win-win cooperation as the way," Yueqing Sui'an Electric Co., Ltd. builds a solid foundation for cooperation with the credibility of a state-owned enterprise, ensures product quality with the service experience of a central enterprise, empowers global competitiveness with the advantages of industrial clusters, and connects overseas markets with professional services. Leveraging the "Electrical+" strategy of Liushi Town and the benefits of six emerging industrial parks, the company collaborates with global partners to build an international trade network, empowering the development of the global electrical industry with the quality of a state-owned enterprise, and is committed to becoming a trustworthy international electrical trading partner.
Strengthened by state-owned governance, world-class industrial cluster resources, and verified international standards.
Comprehensive manufacturing base, precision testing laboratories, and high-voltage quality assurance centers.
Explore our comprehensive lineup of voltage, current, and prefabricated substation systems engineered to international IEC/GB standards.
