Rhaetian Railway Ge 4/4 II
The RhB Ge 4/4 II electric locomotive of the Rhaetian Railway (RhB) with the type designation Ge 4 / 4th
History
The 23 locomotives with the numbers 611-633 were taken in 1973 (first series) and 1984 ( second series) in operation. The last locomotive of the second series, named Zuoz and the number 633 was delivered in 1985. They replaced the Ge 6 /6 I ( crocodiles ), which were always prone to failure.
In the outer appearance of the goods supplied by SLM and BBC locomotives remember the Re 4/4II SBB. However, the electrical part is quite different: constructed from thyristors and diodes controlled rectifiers ( phase control ) supply the traction motors with wavy DC. The former technique to let no regenerative braking, which is why the vehicles are equipped with a dynamic brake.
The BoBo locomotives and 90 km / h and 50 tons. The hourly capacity is 1700 kW at 52 km / h As a trailer load 185 tons to 45 245 tons per mil pitch and allowed to 35 per thousand in double traction up to 400 t.
The second series 621-633 was delivered in the usual red color since then, the green originally 611-620 matched later. As of 1999, some machines were given on the occasion of revisions new rectangular headlights, but remained otherwise unchanged. Between 2004 and 2008, all 23 locomotives were modernized as part of a refit program, inter alia, a modern computerized control system replaced the analog control electronics.
Since its delivery are the locomotives on the entire trunk network to persons and goods trains in use since 1997 and on the Arosa train. The machines can multiply- controlled operate in double traction. With the acquired in 1999 driving trailer of the series BDt 1751-1758 commuter trains can be formed.
The locomotives are named after towns along the RhB network in Graubünden. The names are in white letters on right and left side in the upper area of the vehicle, the car numbers 611-633 on the two end faces, as well as laterally below. Next to the name each locomotive bears the arms of the sponsor community.
The four locomotives with the locomotive number 612, 619, 627 and 632 were the last machines, which were modernized in 2008.