NS Reizigers commissioned the modernisation of train equipment for the DD-AR
(DDM-2/3) type, including mDDM carriages. These renewal activities will be
combined with long-term maintenance. In 2009, NedTrain Haarlem was
commissioned to modernise the first line, which includes 200 carriages – a total of 50 trains of 4 carriages – with an option of 50 more carriages.
NedTrain commissioned Strukton Rolling Stock to take care of the engineering
and delivery of prefabricated bundles of cables, along with the accessories needed for the various new or revised systems. Strukton Rolling Stock will also be carrying out supporting activities for NedTrain, both during the engineering phase and the assembly and test phases of the pre-tryout.
The double-deckers were built in 1985, and the standards and requirements set for these carriages have changed significantly since then. Trains are made up of a complex body of safety systems and numerous subsystems. Cabling is needed to control and supply these systems with power. In addition to technical suitability, the cabling must satisfy new flammability and environmental requirements, for example.
Download project sheet Transformation of DD-AR trains into DDZ trains