PREN 50388-1 : DRAFT 2017

European foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Periods over which parameters should be
   averaged or integrated
5 Separation sections
6 Power factor of a traction unit
7 Train set current and power limitation
8 Requirements for performance of
   power supply
9 Type and characterization of traction
   power supply system
10 Harmonics and dynamic effects
11 Coordination of protection
12 Regenerative braking
13 Effects of DC operation on AC systems
14 Tests
15 Test methodology
Annex A (informative) - Integration periods over which
        parameters can be averaged
Annex B (informative) - [Umean useful]: description,
        calculation and use
Annex C (informative) - Sign convention of active
        and reactive power
Annex D (informative) - Maximum allowable train
        set current
Annex E (informative) - Power limitation as a
        function of line frequency
Annex F (informative) - Proposed power limitation
        steps
Annex G (normative) - Maximum traction current and
        power of a trainset against voltage
Annex H (normative) - Special national conditions
Annex ZZ (informative) - Relationship between this
         European Standard and the Essential
         Requirements of EU Directive 2008/57/EC
Bibliography

Describes requirements for the technical compatibility of rolling stock with infrastructure particularly in relation to: - co-ordination of protection principles between power supply and traction units, especially fault discrimination for short-circuits; - co-ordination of installed power on the line and the power demand of trains; - co-ordination of traction unit regenerative braking and power supply receptivity; and - co-ordination of harmonic behaviour.