EN 60947-7-2:2009

Low-voltage switchgear and controlgear - Part 7-2: Ancillary equipment - Protective conductor terminal blocks for copper conductors

IEC 60947-7-2:2009 specifies requirements for protective conductor terminal blocks with PE function up to 120 mm2 (250 kcmil) and for protective conductor terminal blocks with PEN function equal to and above 10 mm2 (AWG 8) with screw-type or screwless-type clamping units, primarily intended for industrial applications. Protective conductor terminal blocks are used to form the electrical and mechanical connection between copper conductors and the fixing support. lt is applicable to protective conductor terminal blocks for the connection of round copper conductors with or without special preparation having a cross-section between 0,2 mm2 and 120 mm2 (AWG 24 and 250 kcmil), intended to be used in circuits of a rated voltage not exceeding 1 000 V a.c. up to 1 000 Hz or 1 500 V d.c., most commonly in conjunction with terminal blocks according to IEC 60947-7-1. This standard may be used as guide for - protective conductor terminal blocks requiring the fixing of special devices to the conductors, for example quick connect terminations or wrapped connections, etc.; - protective conductor terminal blocks providing direct contact to the conductors by means of edges or points penetrating the insulation, for example insulation displacement connections, etc. Where applicable in this standard, the term 'clamping unit' has been used instead of the term 'terminal'. This is taken into account in case of reference to IEC 60947-1. The main technical modifications of this standard since this previous publication are listed below: - requirements for tightening torques for the tests improved and referenced to Table 4 of IEC 60947-1, Annex B deleted; - the wording of the short-time withstand current test improved in 8.4.6. This publication shall be read in conjunction with IEC 60947-1:2007 and IEC 60947-7-1:2009.

Niederspannungsschaltgeräte - Teil 7-2: Hilfseinrichtungen - Schutzleiter-Reihenklemmen für Kupferleiter

Appareillage à basse tension - Partie 7-2: Matériels accessoires - Blocs de jonction de conducteur de protection pour conducteurs en cuivre

La CEI 60947-7-2:2009 spécifie les exigences pour les blocs de jonction de conducteur de protection avec la fonction PE jusqu'à 120 mm2 (250 kcmil) et pour les blocs de jonction de conducteur de protection avec la fonction PEN de section égale ou supérieure à 10 mm2 (AWG 8) avec des organes de serrage du type à vis ou du type sans vis, destinés principalement à des usages industriels. Les blocs de jonction de conducteur de protection sont utilisés afin d'assurer la connexion électrique et mécanique entre les conducteurs en cuivre et le support de fixation. Elle s'applique aux blocs de jonction de conducteur de protection pour le raccordement des conducteurs ronds en cuivre, avec ou sans préparation spéciale, de section comprise entre 0,2 mm2 et 120 mm2 (AWG 24 et 250 kcmil), prévus pour être utilisés dans des circuits de tension assignée ne dépassant pas 1 000 V à courant alternatif jusqu'à 1 000 Hz ou 1 500 V en courant continu, et très couramment avec les blocs de jonction selon la CEI 60947-7-1. La présente norme peut servir de guide pour - les blocs de jonction de conducteur de protection nécessitant la fixation de pièces spéciales sur les conducteurs, par exemple les connexions rapides ou les connexions enroulées, etc.; - les blocs de jonction de conducteur de protection assurant un contact direct avec les conducteurs au moyen de lames ou de pointes pénétrant à travers l'enveloppe isolante, par exemple les connexions par déplacement d'isolant, etc. Dans la présente norme, le terme 'organe de serrage' a été utilisé, s'il y a lieu, à la place du terme 'borne'. Cela est pris en compte en cas de référence à la CEI 60947-1. Les modifications techniques majeures de la présente norme depuis la précédente publication sont listées ci-dessous: - les exigences concernant les couples de serrage pour les essais ont été améliorées et référencées au Tableau 4 de la CEI 60947-1 et l'Annexe B a été supprimée; - en 8.4.6 la rédaction de l'essai du courant assigné de courte durée admissible a été amélioré. Cette publication doit être lue conjointement avec la CEI 60947-1:2007 et la CEI 60947-7-1:2009.

Nizkonapetostne stikalne in krmilne naprave - 7-2. del: Pomožna oprema - Priključni bloki zaščitnih vodnikov za bakrene vodnike (IEC 60947-7-2:2009)

General Information

• Status: Published
• Publication Date: 25-Jun-2009
• Withdrawal Date: 31-May-2012
• ICS: 29.120.99 - Other electrical accessories
• ICS: 29.130.20 - Low voltage switchgear and controlgear
• Technical Committee: CLC/TC 121A - Low-voltage switchgear and controlgear
• Drafting Committee: IEC/SC 121A - Low-voltage switchgear and controlgear
• Parallel Committee: IEC/SC 17B - IEC_SC_17B
• Current Stage: 6060 - Document made available - Publishing
• Completion Date: 26-Jun-2009
• Directive: 2006/95/EC - Directive 2006/95/EC of the European Parliament and of the Council of 12 December 2006 on the harmonisation of the laws of Member States relating to electrical equipment designed for use within certain voltage limits (codified version)
• Directive: 2014/35/EU - Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits
• Directive: 2014/53/EU - Directive 2014/53/EU of The European Parliament and of the Council of 16 April 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of radio equipment and repealing Directive 1999/5/EC
• Ref Project: SIST EN 60947-7-2:2009 - Low-voltage switchgear and controlgear - Part 7-2: Ancillary equipment - Protective conductor terminal blocks for copper conductors (IEC 60947-7-2:2009)

Relations

• Replaces: EN 60947-7-2:2002 - Low-voltage switchgear and controlgear - Part 7-2: Ancillary equipment - Protective conductor terminal blocks for copper conductors
• Effective Date: 29-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2009
1DGRPHãþD
SIST EN 60947-7-2:2003
1L]NRQDSHWRVWQHVWLNDOQHLQNUPLOQHQDSUDYHGHO3RPRåQDRSUHPD
3ULNOMXþQLEORNL]DãþLWQLKYRGQLNRY]DEDNUHQHYRGQLNH,(&
Low-voltage switchgear and controlgear - Part 7-2: Ancillary equipment - Protective
conductor terminal blocks for copper conductors (IEC 60947-7-2:2009)
Niederspannungsschaltgeräte - Teil 7-2: Hilfseinrichtungen - Schutzleiter-
Reihenklemmen für Kupferleiter (IEC 60947-7-2:2009)
Appareillage à basse tension - Partie 7-2: Matériel accessoires - Blocs de jonction de
conducteur de protection pour conducteurs en cuivre (CEI 60947-7-2:2009)
Ta slovenski standard je istoveten z: EN 60947-7-2:2009
ICS:
29.120.99 'UXJDHOHNWULþQDGRGDWQD Other electrical accessories
RSUHPD
29.130.20 Nizkonapetostne stikalne in Low voltage switchgear and
krmilne naprave controlgear
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 60947-7-2
NORME EUROPÉENNE
June 2009
EUROPÄISCHE NORM
ICS 29.120.99; 29.130.20 Supersedes EN 60947-7-2:2002

English version
Low-voltage switchgear and controlgear -
Part 7-2: Ancillary equipment -
Protective conductor terminal blocks for copper conductors
(IEC 60947-7-2:2009)
Appareillage à basse tension -  Niederspannungsschaltgeräte -
Partie 7-2: Matériels accessoires - Teil 7-2: Hilfseinrichtungen -
Blocs de jonction Schutzleiter-Reihenklemmen
de conducteur de protection für Kupferleiter
pour conducteurs en cuivre (IEC 60947-7-2:2009)
(CEI 60947-7-2:2009)
This European Standard was approved by CENELEC on 2009-06-01. 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, Bulgaria, Cyprus, the
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.

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

Central Secretariat: Avenue Marnix 17, B - 1000 Brussels

© 2009 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60947-7-2:2009 E
Foreword
The text of document 17B/1655/FDIS, future edition 3 of IEC 60947-7-2, prepared by SC 17B,
Low-voltage switchgear and controlgear, of IEC TC 17, Switchgear and controlgear, was submitted to the
IEC-CENELEC parallel vote and was approved by CENELEC as EN 60947-7-2 on 2009-06-01.
This European Standard supersedes EN 60947-7-2:2002.
The main technical modifications of EN 60947-7-2:2009 since EN 60947-7-2:2002 are listed below:
– requirements for tightening torques for the tests improved and referenced to Table 4 of EN 60947-1,
Annex B deleted;
– the wording of the short-time withstand current test improved in 8.4.6.
This standard shall be read in conjunction with EN 60947-1 and EN 60947-7-1. The provisions of the
general rules dealt with in EN 60947-1 and the requirements for terminal blocks of EN 60947-7-1 are
applicable to this standard, where specifically called for. Clauses and subclauses, tables, figures and
annexes thus applicable are identified by reference to EN 60947-1 or EN 60947-7-1, e.g. 1.2 of
EN 60947-1, Table 4 of EN 60947-7-1 or Annex A of EN 60947-1.
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) 2010-03-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2012-06-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60947-7-2:2009 was approved by CENELEC as a European
Standard without any modification.
__________
– 3 – EN 60947-7-2:2009
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.

NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year

IEC 60439-1 1999 Low-voltage switchgear and controlgear EN 60439-1 1999
A1 2004 assemblies - A1 2004
Part 1: Type-tested and partially type-tested
assemblies
IEC 60715 1981 Dimensions of low-voltage switchgear and

+ A1 1995 controlgear - Standardized mounting on rails EN 60715 2001
for mechanical support of electrical devices
in switchgear and controlgear installations

IEC 60947-1 2007 Low-voltage switchgear and controlgear - EN 60947-1 2007
Part 1: General rules
1) 2)
IEC 60947-7-1 - Low-voltage switchgear and controlgear - EN 60947-7-1 2009
Part 7-1: Ancillary equipment - Terminal
blocks for copper conductors
1)
Undated reference.
2)
Valid edition at date of issue.

IEC 60947-7-2 ®
Edition 3.0 2009-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Low-voltage switchgear and controlgear –
Part 7-2: Ancillary equipment – Protective conductor terminal blocks for copper
conductors
Appareillage à basse tension –
Partie 7-2: Matériels accessoires – Blocs de jonction de conducteur de
protection pour conducteurs en cuivre

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
R
CODE PRIX
ICS 29.120.99; 29.130.20 ISBN 2-8318-1038-1
– 2 – 60947-7-2 © IEC:2009
CONTENTS
FOREWORD.4
1 General .6
1.1 Scope.6
1.2 Normative references .6
2 Definitions .7
3 Classification.7
4 Characteristics .7
4.1 Summary of characteristics .7
4.2 Type of protective conductor terminal block.7
4.3 Rated and limiting values .8
4.3.1 Void.8
4.3.2 Short-time withstand current.8
4.3.3 Standard cross-sections .8
4.3.4 Rated cross-section.8
4.3.5 Rated connecting capacity.8
5 Product information .8
5.1 Marking .8
5.2 Additional information.9
6 Normal service, mounting and transport conditions.9
7 Constructional and performance requirements.9
7.1 Constructional requirements.9
7.1.1 Clamping units.9
7.1.2 Connection of support .9
7.1.3 Clearance and creepage distances.9
7.1.4 Terminal block identification and marking .10
7.1.5 Resistance to abnormal heat and fire.10
7.1.6 Rated cross-section and rated connecting capacity .10
7.1.7 Protective conductor mounting rails .10
7.2 Performance requirements .10
7.2.1 Temperature rise .10
7.2.2 Dielectric properties.10
7.2.3 Short-time withstand current.10
7.2.4 Voltage drop.10
7.2.5 Electrical performance after ageing (for screwless-type protective
conductor terminal blocks only) .11
7.3 Electromagnetic compatibility (EMC) .11
8 Tests .11
8.1 Kinds of test .11
8.2 General .11
8.3 Verification of mechanical characteristics .11
8.4 Verification of electrical characteristics.11
8.4.1 General .11
8.4.2 Void.12
8.4.3 Dielectric tests.12
8.4.4 Verification of the voltage drop .13
8.4.5 Temperature-rise test .14

60947-7-2 © IEC:2009 – 3 –
8.4.6 Short-time withstand current test .15
8.4.7 Ageing test (for screwless-type terminal blocks only).16
8.5 Verification of thermal characteristics .17
8.6 Verification of EMC characteristics .17
Annex A (normative) Maximum short-time withstand currents allocated to the rail
profile and thermal rated current of a PEN busbar .18

Figure 1 – Arrangement for the dielectric test .12
Figure 2 – Arrangement for the voltage drop test .13
Figure 3 − Arrangement for the temperature-rise test for test group a) .15
Figure 4 − Arrangement for the temperature-rise test for test group b) .15
Figure 5 – Arrangement for the thermal short-time withstand current test.16

Table 1 − Relationship between rated cross-section and rated connecting capacity of
protective conductor terminal blocks .8
Table A.1 − Maximum short-time withstand currents allocated to the rail profile and
thermal rated current of a PEN busbar .18

– 4 – 60947-7-2 © IEC:2009
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR –

Part 7-2: Ancillary equipment –
Protective conductor terminal blocks for copper conductors

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization fo
...