Custom Railway Traction Transformer for Electric Locomotive & Metro Train Projects

Railway traction transformer is the core onboard power conversion component installed on electric locomotives, metro trains, subway vehicles and high-speed EMUs. It undertakes the key function of stepping down high-voltage grid electricity from overhead contact lines into rated low voltage for traction motors, auxiliary air conditioning, braking systems, lighting and all onboard electrical equipment. Different from conventional power grid transformers fixed in substations, traction transformers work under extremely harsh operating environments including continuous vibration, frequent shock load, wide ambient temperature fluctuation and uneven bump during vehicle running. For this reason, the whole product design focuses on compact layout, shock resistance, low noise, high overload capacity and excellent environmental adaptability, strictly following international railway standards IEC60310, EN 60146 and relevant domestic railway industry specifications.
As a professional Chinese manufacturer with long-term export experience in rail transit equipment, Jiangsu Tianhua develops full-series traction transformers covering AC-DC locomotive, AC transmission freight locomotive, urban metro, light rail and high-speed EMU applications. Our product capacity ranges from several hundred kVA up to thousands of kVA, matching input voltage of 25kV single-phase AC, 15kV AC and other customized input grades according to different national railway power supply systems worldwide. Cooling methods mainly include oil-natural cooling, forced air cooling and sealed fully-immersed cooling to adapt open-air vehicle bottom installation or internal cabinet layout. Each finished unit completes a full set of strict type tests before factory delivery to guarantee stable long-term operation under complicated railway working conditions.
Global rail market demand keeps expanding in recent years. Many emerging countries are accelerating the construction of urban subway networks and trunk railway electrification transformation, which continuously boosts the market demand for reliable traction transformers. Our products have been exported to Southeast Asia, Middle East, Africa, Central Asia and Eastern Europe, widely used in urban rail upgrading projects and new railway line construction. We support fully customized design on rated capacity, voltage ratio, installation dimension, connection mode and protection configuration based on customers’ locomotive technical drawings and on-site operation environment.