Renfe Class 103
Renfe Class 103
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Renfe Class 103

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Renfe Class 103

The Renfe Class 103 is a high-speed train used for the AVE service and operated in Spain by the state-run railway company Renfe. The trainset is also known as S103 or S/103.

The trains were constructed by Siemens, as the second member of the company's Velaro family.

On 24 March 2001, Siemens won one half of Renfe's tender to supply 32 high-speed trains for the Madrid–Barcelona high-speed rail line, offering a modified version of the ICE 3 high-speed train used by German Railways (Deutsche Bahn) for its InterCityExpress service. Changes involved an up-rate to higher power (8,800 kW or 11,800 hp) for higher acceleration and top speed to cover the 651 km (405 mi) between Barcelona and Madrid in 2h30m, the ability to operate in a high range of temperatures, and a different interior.

The ICE 3 trains were a joint production with other Germany-based train manufacturers, who refused to supply parts or sell licenses to Siemens for the AVE Class 103. This caused a delay (for which Siemens eventually paid €21 million), during which Siemens had to re-develop the missing components. However, at the end of this development, Siemens had a complete high-speed train platform, which it named Velaro. The AVE Class 103 was intended as only the second member of a whole family after ICE 3, therefore, it was named by Siemens as the Velaro E.

The AVE Class 103 has been certified to run at 350 km/h (217 mph). During testing between Madrid and Zaragoza, on 16 July 2006, train 005 reached 403.7 km/h (250.8 mph). This is the current national rail speed record for Spain, and remained the international record for a normal series train in standard configuration until 2010.

On 23 December 2005, RENFE ordered a further 10 identical trains (Siemens designation Velaro E2). Currently, all 26 trains from both orders have been delivered and are in service.

The certified top speed of the AVE Class 103 is 350 km/h (217 mph), currently the highest for any train in the world, although the Alstom AGV, currently conducting extensive tests, aims for certification at 360 km/h (224 mph).

The class has distributed traction, traction equipment was moved underfloor, with powered bogies distributed in alternate carriages along the length of the train. This removes the need for driving units at either end, which AVE Class 100 and 102 have, allowing a better use of space, better energy efficiency, better acceleration at lower speeds, and better ability to climb grades. For the AVE Class 103, four of the eight cars were fitted with two powered bogies each.

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