A reproduction of the DD-AR double-decker electric passenger train that can be seen all over the Nederlandse Spoorwegen (Dutch national railways) network.
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|DD-AR : Doubledecker Aglo-regio Materieel (Stop-train Doubledeckers)|
The DD-AR coach sets had a passenger motorcoach at one end of the train and an NS1700 loco at the other end. The newer mDDM trainsets have an mDDM motorcoach at one end and a passenger motorcoach at the other. The mDDM motorcoach was developed by NS Materieel engineering and built for NS Reizigers. Per motorcoach, there are three double-axle bogies. For the NS and most other railways in Europe, this is unique. This layout was necessary to be able to put down enough power to the rails whilst maintaining passenger space above. In total there are six asynchronous current motors available, each with a power rating of 400kW. Train braking can be entirely electro-dynamic, in principle, thus feeding power back into the system under braking. The space for electrical installation and power on the lower deck is very compacy. Because of this, the upper deck was able to be fitted out with proper seating arrangements and compartment doors, unlike other double-deck arrangements.
Because of a slightly lowered passenger floor, the position of the windows compared to the seats is more 'normal' on the upper deck. This means that regular sliding windows can be used for the ventilation - the windows don't have the recognisable bend in them that the other doubledeck units have. The floor between the passenger deck and the engine room is heavily insulated against both heat and noise.
The shape of the nose of the mDDM is basically the same as the DD-AR units. The mDDM is a push-pull unit and has lowered automatic couplers.
|Series||390 7701 - 77??|
|Maximum speed||140 km/h|
|mDDM Weight||76 ton|
|mDDM Number built||50|
|Built by||Talbot Aken / Holec|
|Years entered service||1991-1996|