Division 4.3.3 Traction performance requirements
United Kingdom
In order to guarantee proper compatibility with other train operations, the mean minimum accelerations calculated over time on a level track shall be:
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0 to 40 km/h: 48 cm/s2
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0 to 120 km/h: 32 cm/s2
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0 to 160 km/h: 17 cm/s2
At the maximum service speed and on level track, the residual acceleration shall be at least 5 cm/s2.
For reasons of availability, traffic flow, and safe clearance of tunnels, three conditions shall be met by the trainsets:
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performance shall be achieved with the mean supply voltage available at the pantograph as specified in energy TSI Section 4.3.1.1, Annex L,
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a failed traction module shall not deprive the trainset of more than 25 % of its rated output,
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failure of a traction supply element shall allow at least 50 % of the traction modules to continue in operation.
Under these conditions it shall be possible for a trainset under normal load (number of seats × 80 kg) with a traction module out-of-service to start on the maximum gradient it is likely to meet with a residual acceleration in the vicinity of 5 cm/s2. It shall be possible for this starting regime to be maintained for 10 minutes, and for the speed to reach 60 km/h.