Project Profile: Class 385 EMU Fleet

The Class 385 Electric Multiple Unit (EMU) project delivered a fleet of 70 modern, high-performance trains for Scotland’s railway network. This initiative focused on enhancing operational efficiency, passenger capacity, and accessibility through advanced engineering, lightweight construction, and state-of-the-art onboard systems. The successful deployment represents a significant modernisation of regional rail services, adhering to stringent European interoperability and UK safety standards.

Technical Specifications

The Class 385 fleet’s core design is a lightweight aluminum alloy bodyshell assembled using advanced friction stir welding techniques, significantly reducing tare weight to improve acceleration and minimise track wear. The propulsion system is powered by a 25 kV AC overhead line, feeding an Insulated-Gate Bipolar Transistor (IGBT) traction system with 250kW tandem motors. This configuration allows for rapid performance on a standard gauge (1,435 mm) network. Braking is managed by independently controlled, electrically actuated pneumatic brakes on each bogie, ensuring high levels of safety and performance compliant with Railway Group Standards (RGS) and Technical Specifications for Interoperability (TSI).

The fleet consists of two primary configurations: a four-car set (2M2T) and a three-car set. The three-car units employ an innovative 1.5M1.5T traction arrangement, where motor and trailer functions are distributed to reduce overall weight and eliminate redundant drive systems. All units are fitted with automatic couplers and walkthrough gangways, enabling flexible operation and the formation of up to 12-car consists to meet peak demand.

Key Takeaways

• Strategic UK Manufacturing Boost: While initial units were built in Japan, the establishment of Hitachi’s Newton Aycliffe facility for the main production run bolstered UK-based manufacturing capabilities and supply chains.
• Efficiency-Driven Engineering: The combination of a lightweight aluminum bodyshell, an advanced IGBT traction system, and the innovative 1.5M1.5T configuration in 3-car sets demonstrates a core focus on energy efficiency and reduced operational costs.
• Passenger-Centric Design: The project prioritized the passenger experience with features like enhanced accessibility, spacious interiors designed by DCA, at-seat power, Wi-Fi, and larger windows, setting a new standard for regional rail travel in Scotland.

FAQ

What is the top speed of the Class 385 train?

The Class 385 Electric Multiple Unit has a maximum operational speed of 161 kilometers per hour, which is equivalent to 100 miles per hour. This enables faster journey times on electrified routes across Scotland.

Who built the Class 385 trains for ScotRail?

The Class 385 trains were built by Hitachi Rail Europe. The first six units were manufactured at Hitachi’s Kasado facility in Japan, with the remaining 64 units produced at their purpose-built manufacturing plant in Newton Aycliffe, England.