EN 50123-4:2003

Railway applications - Fixed installations - D.C. switchgear - Part 4: Outdoor d.c. disconnectors, switch-disconnectors and earthing switches

This part of EN 50123 specifies requirements for outdoor d.c. switch-disconnectors, disconnectors and earthing switches for use in outdoor fixed installations of traction systems. NOTE 1 EN 50121-5 specifies requirements for electromagnetic compatibility (EMC). NOTE 2 In this document the word "unit" means "switch-disconnector and/or disconnector and/or earthing switch" as defined in 3.1.4, 3.1.5 and 3.1.6 of EN 50123 1.

Bahnanwendungen - Ortsfeste Anlagen - Gleichstrom-Schalteinrichtungen - Teil 4: Freiluft-Gleichstrom-Trennschalter, -Lasttrennschalter und -Erdungsschalter

Applications ferroviaires - Installations fixes - Appareillages à courant continu - Partie 4: Interrupteurs-sectionneurs, sectionneurs et sectionneurs de terre pour l'extérieur

Železniške naprave – Stabilne naprave električne vleke – Stikalne naprave za enosmerni tok – 4. del: Odklopni ločilniki, ločilniki in enosmerna ozemljilna stikala za zunanjo vgradnjo

Ta del standarda EN 50123 določa zahteve za zunanje ločilnike, odklopne ločilnike in ozemljitvena stikala za stabilne naprave vlečnih sistemov za zunanjo vgradnjo.

General Information

• Status: Published
• Publication Date: 27-Feb-2003
• ICS: 29.280 - Electric traction equipment
• ICS: 45.020 - Railway engineering in general
• 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 50123-4:2003 - Railway applications - Fixed installations - D.C. switchgear -- Part 4: Outdoor d.c. disconnectors, switch-disconnectors and earthing switches

Relations

• Replaces: EN 50123-4:1999 - Railway applications - Fixed installations - D.C. switchgear - Part 4: Outdoor d.c. in-line switch-disconnectors, disconnectors and d.c. earthing switches
• Effective Date: 28-Jan-2023
• Amended By: EN 50123-4:2003/A1:2013 - Railway applications - Fixed installations - D.C. switchgear - Part 4: Outdoor d.c. disconnectors, switch-disconnectors and earthing switches
• Effective Date: 28-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2003
1DGRPHãþD
SIST EN 50123-4:1999
äHOH]QLãNHQDSUDYH±6WDELOQHQDSUDYHHOHNWULþQHYOHNH±6WLNDOQHQDSUDYH]D
HQRVPHUQLWRN±GHO2GNORSQLORþLOQLNLORþLOQLNLLQHQRVPHUQDR]HPOMLOQDVWLNDOD
]D]XQDQMRYJUDGQMR
Railway applications - Fixed installations - D.C. switchgear -- Part 4: Outdoor d.c.
disconnectors, switch-disconnectors and earthing switches
Bahnanwendungen - Ortsfeste Anlagen - Gleichstrom-Schalteinrichtungen -- Teil 4:
Freiluft-Gleichstrom-Trennschalter, -Lasttrennschalter und -Erdungsschalter
Applications ferroviaires - Installations fixes - Appareillages à courant continu -- Partie 4:
Interrupteurs-sectionneurs, sectionneurs et sectionneurs de terre pour l'extérieur
Ta slovenski standard je istoveten z: EN 50123-4:2003
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 50123-4
NORME EUROPÉENNE
EUROPÄISCHE NORM February 2003

ICS 29.120.60; 45.020 Supersedes EN 50123-4:1999

English version
Railway applications –
Fixed installations – D.C. switchgear
Part 4: Outdoor d.c. disconnectors, switch-disconnectors
and earthing switches
Applications ferroviaires –  Bahnanwendungen –
Installations fixes – Ortsfeste Anlagen –
Appareillages à courant continu Gleichstrom-Schalteinrichtungen
Partie 4: Interrupteurs-sectionneurs, Teil 4: Freiluft-Gleichstrom-Trennschalter,
sectionneurs et sectionneurs de terre -Lasttrennschalter und -Erdungsschalter
pour l'extérieur
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 50123-4:2003 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 50123-4 on 2002-09-01.
This European Standard supersedes EN 50123-4:1999.
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 4 is to be used in conjunction with EN 50123-1:2003.
Annexes designated “informative” are given for information only.
In this standard, annex A is informative.
_____________
– 3 – EN 50123-4:2003
Contents
Page
1 Scope . 5
2 Normative references. 5
3 Definitions. 5
4 Service requirements . 5
5 Characteristics of the unit. 5
5.1 Enumeration of the characteristics . 5
5.2 Type of unit . 6
5.3 Rated values. 6
5.4 Class of use . 7
5.5 Control circuits. 8
5.6 Auxiliary contacts and circuits. 9
6 Construction. 9
6.1 General. 9
6.2 Materials. 9
6.3 Arcing contacts. 9
6.4 Clearances and creepage distances. 9
6.5 Primary connections.10
6.6 Location of the primary connections. 10
6.7 Earthing terminal. 10
6.8 Manual operation means . 10
6.9 Unit enclosure. 10
6.10 Temperature-rises. 10
6.11 Dielectric strength. 11
6.12 Electrical and mechanical endurance . 11
6.13 Operation. 12
6.14 Corrosion protection. 13
6.15 Noise emission. 13
6.16 Cooling. 13
6.17 Servo-control (where applicable) . 13
6.18 Other facilities. 13
7 Information and marking . 14
7.1 Information. 14
7.2 Marking. 14
8 Tests . 15
8.1 General. 15
8.2 Applicable tests and test sequence . 15
8.3 Performance of tests. 17

Annex A (informative) Information required. 23
A.1 General. 23
A.2 Procurement specification. 23
A.3 Manufacturer's specification . 23

Table 1 – Categories of units. 8
Table 2 - List of applicable tests and sequence . 16
Table 3 – Recommended quantities and dimensions of copper bars . 19

– 5 – EN 50123-4:2003
1 Scope
This part of EN 50123 specifies requirements for outdoor d.c. switch-disconnectors,
disconnectors and earthing switches for use in outdoor fixed installations of traction systems.
NOTE 1  EN 50121-5 specifies requirements for electromagnetic compatibility (EMC).
NOTE 2  In this document the word "unit" means "switch-disconnector and/or disconnector and/or earthing switch"
as defined in 3.1.4, 3.1.5 and 3.1.6 of EN 50123-1.
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
The equipment covered in this standard is mainly intended for outdoor installations.
The requirements given for outdoor equipment in EN 50125-2 or in 2.1.2 of EN 60694 may be
used and EN 50119 may be taken into account. In this standard the pollution degree PD 4A (see
EN 50124-1) is considered as normal condition.
Where service requirements and environmental class differ from those defined in the above
standards, require to be specified or a particular environmental class is required, the purchaser
shall state this fact in the tender specification. The supplier shall confirm that the unit is suitable
for the service requirements specified.
5 Characteristics of the unit
5.1 Enumeration of the characteristics
The characteristics of the unit and its assigned designations and values (where applicable) are as
follows:
• type of unit (5.2);
• rated values (5.3);
• class of use (5.4);
• control circuits (5.5).
5.2 Type of unit
A unit shall be defined by the following details (where applicable):
• whether the unit is a switch disconnector, disconnector, earthing switch or a combination of
these types;
• number of poles;
• number of positions (if there are more than two);
• provision of an enclosure;
• degree of protection provided by the enclosure, if any (see EN 60529).
5.3 Rated values
5.3.1 General
The rated characteristic values shall be specified by the purchaser. Rated insulation voltage
values shall be selected from the values indicated in Table 1 of EN 50123-1; current values
should have one of the preferred values in 5.1.2 of EN 50123-1.
These values shall be confirmed by the manufacturer, who shall indicate the rated values for the
type of unit proposed, and shall be complemented with other data.
All these values are to be stipulated in accordance with 5.3.2 to 5.3.4, but it is not necessary to
specify all the listed rated values.
5.3.2 Voltages
A unit is defined by the following voltages.
The nominal voltages and the system voltages and limits shall be taken from EN 50163. The
insulation values shall be taken from Table 1 of EN 50123-1:
• nominal voltage U (see 3.2.1.1 of EN 50123-1);
n
• system voltages and limits (see 3.2.1.2 of EN 50123-1);
• rated voltage U (see 3.2.3 of EN 50123-1);
Ne
• rated insulation voltage U (this value shall be equal to or higher than U ) (see 3.2.2 of
Nm max
EN 50123-1);
• rated impulse withstand voltage U (see 3.2.4 of EN 50123-1);
Ni
• power-frequency voltage withstand level (dry and wet) U (see 3.2.5 of EN 50123-1);
a
• auxiliary and control supply voltages (see 3.2.3.1 of EN 50123-1).

– 7 – EN 50123-4:2003
5.3.3 Currents
A unit is defined by the following currents.
The current values shall be selected taking into account 5.1 of EN 50123-1:
• conventional thermal current I , I (see 3.2.8 and 3.2.9 of EN 50123-1);
th the
NOTE 1  Earthing switches are not required to be assigned this rating.
• rated service current I (see 3.2.10 of EN 50123-1);
Ne
NOTE 2  Earthing switches are not required to be assigned this rating.
• rated breaking and making capacity (see 3.2.18 and 3.2.22 of EN 5012
...