EN 50327:2003

Railway applications - Fixed installations - Harmonisation of the rated values for converter groups and tests on converter groups

This European Standard provides requirements for some type tests which are significant only when made on the entire group. It provides also a basic relationship between compatible ratings of traction transformer and converter(s), in order to provide minimum requirements for the choice of their ratings. Moreover it gives the minimum values to be considered in order to choose switching devices with characteristics suitable for the converter group(s) involved. Annexes provide useful information as a guide for the group designer. Table 1 indicates the components of a converter group and the relevant applicable standards.

Bahnanwendungen - Ortsfeste Anlagen - Harmonisierung der Bemessungswerte von Stromrichtergruppen und Prüfungen von Stromrichtergruppen

Diese Europäische Norm legt die Anforderungen für Prüfungen fest, die nur, wenn sie mit der gesamten Stromrichtergruppe durchgeführt werden, aussagekräftig sind. Sie gibt auch die grundlegenden Beziehungen zwischen den Bemessungswerten des Bahntransformators und des Stromrichters an, um minimale Anforderungen für die Auswahl der Bemessungswerte zu geben. Darüber hinaus gibt sie Minimalwerte an, die bei der Auswahl von Schaltgeräten mit Kennwerten entsprechend der Stromrichtergruppe(n) zu berücksichtigen sind. Die Anhänge geben nützliche Informationen als Leitfaden für den Planer einer Stromrichtergruppe. Tabelle 1 benennt die Komponenten einer Stromrichtergruppe und die für sie anwendbaren Normen.

Applications ferroviaires - Installations fixes - Harmonisation des valeurs assignées et des essais sur les groupes convertisseurs

Cette Norme européenne fournit des prescriptions pour quelques essais de type lesquels ne sont significatifs que s'ils sont faits sur le groupe complet. Elle donne aussi la relation fondamentale entre les caractéristiques compatibles du transformateur de traction et le(s) convertisseur(s), afin de fournir des exigences minimales pour le choix de leurs caractéristiques. De plus elle donne les valeurs minimales à considérer pour choisir des appareils de connexion avec des caractéristiques appropriées pour le(s) groupe(s) convertisseur(s) impliqué(s). Les annexes fournissent à titre indicatif des informations utiles au concepteur du groupe. Le Tableau 1 indique les composants d’un groupe convertisseur et les normes correspondantes applicables.

Železniške naprave – Stabilne naprave električne vleke – Harmonizacija vrednosti razredov pretvorniških skupin in preskušanje pretvorniških skupin

General Information

• Status: Published
• Publication Date: 06-Mar-2003
• ICS: 29.200 - Rectifiers. Convertors. Stabilized power supply
• ICS: 29.280 - Electric traction equipment
• Technical Committee: CLC/TC 9X - Electrical and electronic applications for railways
• Drafting Committee: CLC/SC 9XC - Electric supply and earthing systems for public transport equipment and ancillary apparatus (fixed i
• Parallel Committee: IEC/TC 9 - IEC_TC_9
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Completion Date: 14-Sep-2022
• Ref Project: SIST EN 50327:2003 - Railway applications - Fixed installations - Harmonisation of the rated values for converter groups and tests on converter groups

Relations

• Amended By: EN 50327:2003/A1:2005 - Railway applications - Fixed installations - Harmonisation of the rated values for converter groups and tests on converter groups
• Effective Date: 28-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2003
äHOH]QLãNHQDSUDYH±6WDELOQHQDSUDYHHOHNWULþQHYOHNH±+DUPRQL]DFLMDYUHGQRVWL
UD]UHGRYSUHWYRUQLãNLKVNXSLQLQSUHVNXãDQMHSUHWYRUQLãNLKVNXSLQ
Railway applications - Fixed installations - Harmonisation of the rated values for
converter groups and tests on converter groups
Bahnanwendungen - Ortsfeste Anlagen - Harmonisierung der Bemessungswerte von
Stromrichtergruppen und Prüfungen von Stromrichtergruppen
Applications ferroviaires - Installations fixes - Harmonisation des valeurs assignées et
des essais sur les groupes convertisseurs
Ta slovenski standard je istoveten z: EN 50327:2003
ICS:
29.200 8VPHUQLNL3UHWYRUQLNL Rectifiers. Convertors.
6WDELOL]LUDQRHOHNWULþQR Stabilized power supply
QDSDMDQMH
29.280 (OHNWULþQDYOHþQDRSUHPD Electric traction equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 50327
NORME EUROPÉENNE
EUROPÄISCHE NORM March 2003
ICS 29.200; 29.280
English version
Railway applications –
Fixed installations –
Harmonisation of the rated values for converter groups
and tests on converter groups
Applications ferroviaires – Bahnanwendungen –
Installations fixes – Ortsfeste Anlagen –
Harmonisation des valeurs assignées et Harmonisierung der Bemessungswerte
des essais sur les groupes convertisseurs von Stromrichtergruppen und Prüfungen
von Stromrichtergruppen
This European Standard was approved by CENELEC on 2002-05-01. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and
notified to the Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta,
Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2003 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 50327:2003 E
Foreword
This European Standard was prepared by SC 9XC, Electric supply and earthing systems for
public transport equipment and ancillary apparatus (fixed installations) of Technical Committee
CENELEC TC 9X, Electrical and electronic applications for railways.

The text of the draft was submitted to the formal vote and was approved by CENELEC as
EN 50327 on 2002-05-01.
The following dates were fixed:

- latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2003-09-01

- latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2005-05-01

Annexes designated “informative” are given for information only.
In this standard, annexes A, B and C are informative.
____________
- 3 - EN 50327:2003
Contents
Introduction . 4
1 Scope. 5
2 Normative references. 5
3 Definitions, symbols and abbreviations . 6
3.1 Basic connections of converter groups . 6
3.2 Symbols. 8
3.3 Definitions. 9
4 Service conditions. 13
5 General requirements for converter groups. 13
5.1 Voltage requirements.13
5.2 Current demand.14
5.3 Short circuit requirements.14
5.4 Insulation levels.14
6 Relationships among parameters of the items of a converter group . 15
6.1 General. 15
6.2 Theoretical relationships.15
7 Tests suitable to verify the correct performance of the converter group. 17
7.1 General. 17
7.2 Performance of tests. 17
7.3 Test schedule . 17
7.4 Loss determination for the converter group. 17
7.5 Power factor measurement.17
7.6 Measurement of the inherent voltage drop. 18
7.7 Short circuit test. 18

Annex A (informative) Short circuit currents. 19
Annex B (informative) Examples of power factors of converter groups
with d.c. output. 24
Annex C (informative) Interbridge reactor. 26
Bibliography . 28

Figure 1 – Diagrams of converter groups and related quantities. 7
Figure 2 – Typical arrangement of an a.c./d.c. group with auxiliary services transformer. 8
Figure A.1 – Example of transient current under short circuit for a 12-pulse converter . 21
Figure A.2 – Example of transient current on the most charged arm . 21
Figure A.3 – External characteristic for connection 7 (single-phase bridge). 22
Figure A.4 – External characteristic for connection 8 (three-phase bridge). 22
Figure A.5 – External characteristic for connections 9 and 12 (double three-phase bridge). 23
Figure C.1 – Interbridge reactor. 26

Table 1 – Components of a converter group. 5
Table 2 – Theoretical relationships for line commutated converters. 16
Table 3 – Relationship valid in most cases between basic and rated current. 16
Table 4 – Summary of tests. 17
Table A.1 – Formulae for k . 19
dc
Table A.2 – Typical values for k . 20
dc
Introduction
Converters, traction transformers and switchgear are ordered in most cases as individual items
and are tested in manufacturer’s premises as such.
It is evident that tuning is necessary to choose compatible ratings and that certain performances
cannot be verified (through additional or investigation type tests) unless at least the traction
transformer and the converter are coupled together.
That is the reason for this document.

- 5 - EN 50327:2003
1 Scope
This European Standard provides requirements for some type tests which are significant only
when made on the entire group.
It provides also a basic relationship between compatible ratings of traction transformer and
converter(s), in order to provide minimum requirements for the choice of their ratings.
Moreover it gives the minimum values to be considered in order to choose switching devices
with characteristics suitable for the converter group(s) involved.
Annexes provide useful information as a guide for the group designer.
Table 1 indicates the components of a converter group and the relevant applicable standards.
Table 1 - Components of a converter group
Component Standard
Converter EN 50328
Traction transformer EN 50329
Interbridge reactor EN 60289
and informative annex D
Reactors EN 60289
Transducers EN 50123-7-1
EN 50123-7-2
Instrument transformers (as applicable) EN 50152-3-2 /
EN 50152-3-3
EN 60044 series
Control devices as applicable
Busbars and connections as applicable

2 Normative references
This European Standard incorporates, by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions
of any of these publications apply to this European Standard only when incorporated in it by
amendment or revision. For undated references the latest edition of the publication referred to
applies (including amendments).
EN 50123-7-1 2003 Railway applications – Fixed installations – D.C. switchgear
Part 7-1: Measurement, control and protection devices for
specific use in d.c. traction systems - Application guide
EN 50123-7-2 2003 Railway applications – Fixed installations – D.C. switchgear
Part 7-2: Measurement, control and protection devices for
specific use in d.c. traction systems - Isolating current
transducers and other current measuring devices

EN 50125-2 2002 Railway applications – Environmental conditions for
equipment – Part 2: Fixed electrical installations

EN 50152-3-2 2001 Railway applications – Fixed installations - Particular
requirements for a.c. switchgear – Part 3-2: Measurement,
control and protection devices for specific use in a.c. traction
systems - Single-phase current transformers
EN 50152-3-3 2001 Railway applications – Fixed installations - Particular
requirements for a.c. switchgear – Part 3-3: Measurement,
control and protection devices for specific use in a.c. traction
systems - Single-phase inductive voltage transformers
EN 50163 1995 Railway applications – Supply voltages of traction systems

EN 50328 2003 Railway applications – Fixed installations – Electronic power
converters for substations
EN 50329 2003 Railway applications – Fixed installations – Traction
transformers
EN 60044 Series Instrument transformers (IEC 60044 series, mod.)
EN 60076 Series Power transformers (IEC 60076 series, mod.)
EN 60289 1994 Reactors (IEC 60289:1988, mod.)
1)
EN 61000-2-12 - Electromagnetic compatibility (EMC)
Part 2-12: Environment – Compatibility levels for low-
frequency conducted disturbances and signalling in public
medium-voltage power supply systems
IEC 60050-811 1991 International Electrotechnical Vocabulary (IEV)
Chapter 811: Electric traction
IEC/TR 60146-1-2 1991 Semiconductor convertors – General requirements and line
commutated convertors
Part 1-2: Application guide
3 Definitions, symbols and abbreviations
3.1 Basic connections of converter groups
For the purpose of this standard it is given a schematic overview of the various types of
converter groups as far as the main components are concerned. The various types of converter
groups are schemed in Figure 1 and Figure 2.

1)
To be pulished.
- 7 - EN 50327:2003
Supply side
Supply side
U
L
U 1
L
Traction converter
transformer(s)
Traction transformer(s)
U
S
U
v
U
S
a.c.
Uv Converter
a.c.
U 4
P
a.c.
Converter
d.c.
Traction inverter
transformer(s)
U 5
d
U
V
Traction side
Traction side
a.c./d.c. group a.c./a.c. group

Point Rated Rated current Basic current Rated service Basic service
voltage(s) current current
U I I I I
NL NL BL NGL BGL
1: Supply-side
2: Transformer
U I I I I
NS NS BS NGS BGS
output
U I I I I
Nv Nv Bv NGv BGv
2: Converter input
3: a.c/d.c.
U (U U )  I I n.a. n.a.
Nd Bd
Nd di diα
converter output
4: a.c./a.c. or
U I I n.a. n.a.
NP NP BP
d.c./a.c.
converter output
U I I n.a. n.a.
NV NV BV
5: a.c. traction-side
U (U U )  I I n.a. n.a.
Nd Bd
Nd di diα
5: d.c. traction-side
NOTE 1  “input” - “output” are referred to the normal flow of the current.
n.a. = not applicable (not significant).

Figure 1
...