Rail transit industry transformer solutions

For the frequent start-stops and close-in short circuits of high-speed rail, we optimize the winding structure with breakthrough temperature field simulation analysis technology. Paired with a multi-zone hybrid heat-resistant insulation design, this gives the transformer a 24-hour continuous 30% overload capability. Air cooling provisions are also reserved, allowing overload performance to be raised even further.

Power supply reliability begins with the purity of the insulation. By using electromagnetic field simulation to effectively avoid field strength distortion, together with a fully enclosed assembly process and dust control throughout, we achieve measured partial discharge below 40pC, far exceeding national standard requirements and effectively extending equipment service life.

To withstand the short-circuit impacts created by traction loads, we reinforce the active part on the basis of our core Three-Tight process: tight winding, tight fitting, and tight pressing. The product is certified through national-level sudden short-circuit testing and takes the frequent close-in short circuits of high-speed rail in stride.

From design and manufacturing to testing, every stage is validated repeatedly against the operating realities of rail transit, so that equipment remains stable through long-cycle, high-intensity service, reducing outage risk and whole-lifecycle O&M investment.