SIST EN 50123-7-2:2003

SLOVENSKI STANDARD
01-maj-2003
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SIST EN 50123-7-2:1999
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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
Bahnanwendungen - Ortsfeste Anlagen - Gleichstrom-Schalteinrichtungen -- Teil 7-2:
Mess-, Steuer- und Schutzeinrichtungen in Gleichstrom-Bahnanlagen - Messumformer
für Strommessung und andere Strommesseinrichtungen
Applications ferroviaires - Installations fixes - Appareillage à courant continu -- Partie 7-2:
Appareils de mesure, de commande et de protection pour usage spécifique dans les
systèmes de traction à courant continu - Transducteurs et autres appareils de mesure de
courant
Ta slovenski standard je istoveten z: EN 50123-7-2:2003
ICS:
29.130.99 Druge stikalne in krmilne Other switchgear and
naprave controlgear
29.280 (OHNWULþQDYOHþQDRSUHPD Electric traction equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 50123-7-2
NORME EUROPÉENNE
EUROPÄISCHE NORM February 2003

ICS 29.280 Supersedes EN 50123-7-2:1999

English version
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

Applications ferroviaires –  Bahnanwendungen –
Installations fixes – Ortsfeste Anlagen –
Appareillage à courant continu Gleichstrom-Schalteinrichtungen
Partie 7-2: Appareils de mesure, Teil 7-2: Mess-, Steuer- und
de commande et de protection pour Schutzeinrichtungen in Gleichstrom-
usage spécifique dans les systèmes Bahnanlagen –
de traction à courant continu – Messumformer für Strommessung und
Transducteurs et autres appareils andere Strommesseinrichtungen
de mesure de courant
This European Standard was approved by CENELEC on 2002-09-01. 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 50123-7-2:2003 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 the Technical
Committee CENELEC TC 9X, Electrical and electronic applications for railways.
The text of the draft was submitted to the Unique Acceptance Procedure and was approved
by CENELEC as EN 50123-7-2 on 2002-09-01.
This European Standard supersedes EN 50123-7-2:1999.
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) 2005-09-01
This Part 7-2 is to be used in conjunction with EN 50123-1:2003.
_____________
- 3 - EN 50123-7-2:2003
Contents
Page
1 Scope . 4
2 Normative references. 4
3 Definitions . 4
4 Service requirements. 4
5 Characteristics . 5
5.1 Electrical characteristics . 5
5.2 Mechanical characteristics. 6
6 Information to be exchanged between purchaser and supplier . 7
7 Tests . 7
7.1 Dielectric tests. 7
7.2 Calibration test. 7
7.3 Other tests . 8
7.4 EMC tests. 8

1 Scope
This European Standard gives the requirements for isolating current transducers and other
current measuring devices used in d.c. railway applications, fixed installations.

This transducer is normally positioned between the sensor in the live switchboard
conductor or rail and the secondary device, giving galvanic insulation between the input
and the output.
2 Normative references
This European Standard incorporates by dated or undated references, 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).

See EN 50123-1:2003.
3 Definitions
For the purposes of this European standard the terms and definitions given in EN 50123-1
apply.
4 Service requirements
Where the equipment described in this standard is
...