The unveiling of Stadler’s new JK metro series marks a significant step in the development of Berlin’s rail network. Compared to the trains, which are over three decades old, the new train presents itself as a leap into a new technological age.
While there are hardly any significant differences on the outside, the JK series impresses with a wealth of innovations on the inside. An improved sense of space, more generous standing room and vertical handrails that eliminate the need to grab ceiling poles are just some of the highlights. The bent handrails also make it easier for wheelchair users to pass through the corridors. In addition, space-saving screens and an integrated size indication on the signs indicating places for the severely disabled are part of the modernised interior.
The first test cars have been rolling through the Berlin subway network since January before they will be used in regular passenger service for the first time from late summer 2024. The introduction of this new metro series represents a significant advance in rail technology and lays the foundation for further innovations in the future.
The technological development is driven by the cooperation between REO TPM and the customer ABB. Together, a special DC network choke was developed at the end of 2021 to integrate it into the new subway car. As an essential component of the powertrain, this choke provides important protection against circuit-related power spikes and reduces harmful grid feedback.
A special feature of the DC mains choke is its EMC compliance, which is ensured by the choke’s environment with thick iron sheets. This ensures that electromagnetic interference is kept to a minimum, which in turn increases the safety and reliability of metro operations.
