SN EN 50328 : 2003

Introduction
1 General
  1.1 Scope
  1.2 Normative references
  1.3 Classification of traction supply power converters
      and value
  1.4 List of principal letter symbols
  1.5 Definitions
2 Service conditions
  2.1 Code of identification of cooling method
  2.2 Environmental conditions
  2.3 Electrical service conditions
3 Converter equipment and assemblies
  3.1 Electrical connections
  3.2 Calculation factors
  3.3 Losses and efficiency
  3.4 Power factor
  3.5 Direct voltage harmonic content
  3.6 Electromagnetic compatibility (EMC)
  3.7 Rated values for converters
  3.8 Mechanical characteristics
  3.9 Marking
4 Tests
  4.1 General
  4.2 Test specifications
Annex A (informative) Information required
  A.1 General
  A.2 Diode rectifiers
  A.3 Controlled converters and inverters
  A.4 Frequency converters (direct and d.c. link
      converters)
Annex B (informative) Determination of the current
        capability through calculation of the virtual
        junction temperature
  B.1 General
  B.2 Approximation of the shape of power pulses
      applied to the semiconductor device
  B.3 The superposition method for calculation of
      temperature
  B.4 Calculation of virtual junction temperature for
      continuous load
Annex C (informative) Index of definitions
Bibliography

Gives requirements for the performance of all fixed installations electronic power converters, using controllable and/or non-controllable electronic valves, intended for traction power supply.