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IEC 60947-7-1 Ed. 3.0 Low-voltage switchgear and controlgear - Part 7-1: Ancillary equipment - Terminal blocks for copper conductors

Standard Number:  IEC 60947-7-1 Ed. 3.0
Title:  Low-voltage switchgear and controlgear - Part 7-1: Ancillary equipment - Terminal blocks for copper conductors
Language:  English and French
Replacing Standard:  IEC 60947-7-1 Ed. 2.0

Status:  Current
Publisher:  International Electrotechnical Commission (IEC)
Price:  
Number of Pages:68  

Description:IEC 60947-7-1-2009 Low-voltage switchgear and controlgear - Part 7-1: Ancillary equipment - Terminal blocks for copper conductors specifies requirements for terminal blocks with screw-type or screwless-type clamping units primarily intended for industrial or similar use and to be fixed to a support to provide electrical and mechanical connection between copper conductors. lt applies to terminal blocks intended to connect round copper conductors, with or without special preparation, having a cross-section between 0,2 mm2 and 300 mm2 (AWG 24/600 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. This standard may be used as a guide for - terminal blocks requiring the fixing of special devices to the conductors, for example quick connect terminations or wrapped connections, etc.; - terminal blocks providing direct contact to the conductors by means of edges or points penetrating the insulation, for example insulation displacement connections, etc.; - special types of terminal blocks, for example with diodes or varistors or similar component holders, 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- - added in the scope that this standard may be used as a guide for special types of terminal blocks, for example with diodes or varistors or similar component holders; - the conventional free air thermal current added in 5.2 in the list of information to be stated by the manufacturer; - update of 7.1.4 that the colour combination green-yellow is not allowed for terminal blocks; - the consequences in case of failed single tests and failed tests within test sequences specified in 8.2; - requirements regarding clearances and creepage distances replaced by reference to Annex H of IEC 60947-1, Annex A deleted; - requirements for tightening torques for the tests improved and referenced to Table 4 of IEC 60947-1, Annex C deleted; - in 8.3.3.3 changed reference for pull-out force to IEC 60947-1; - the wording of the test of the voltage drop improved in 8.4.4; - the wording of the short-time withstand current test improved in 8.4.6; - Annex D with additional requirements for test disconnect terminal blocks added. The scope modified accordingly. This publication shall be read in conjunction with IEC 60947-1-2007.  
Catalog:Document Contents
English
CONTENTS
FOREWORD
1 General
1.1 Scope
1.2 Normative references
2 Definitions
3 Classification
4 Characteristics
4.1 Summary of characteristics
4.2 Type of terminal block
4.3 Rated and limiting values
5 Product information
5.1 Marking
5.2 Additional information
6 Normal service, mounting and transport conditions
7 Constructional and performance requirements
7.1 Constructional requirements
7.2 Performance requirements
7.3 Electromagnetic compatibility (EMC)
8 Tests
8.1 Kinds of test
8.2 General
8.3 Verification of mechanical characteristics
8.4 Verification of electrical characteristics
8.5 Verification of thermal characteristics
8.6 Verification of EMC characteristics
Annex A Vacant
Annex B (informative) Items subject to agreement between manufacturer and user
Annex C Vacant
Annex D (normative) Additional requirements for test disconnect terminal blocks
Bibliography
Figures
Figure 1 ? Arrangement for test according to 8.3.2
Figure 2 ? Arrangement for tests according to 8.4.5 and 8.4.7, and for the verification o...
Figure 3 ? Arrangement for test according to 8.5
Figure 4 ? Point of test flame contact (view from the layer placed below the terminal blo...
Figure D.1 – Test requirements according to D.8.4.4 for verification of the voltage drop
Tables
Table 1 ? Standard cross-sections of round copper conductors
Table 2 ? Relationship between rated cross-section and rated connecting capacity of termi...
Table 3 ? Attachment test parameters
Table 4 ? Values of test current for temperature-rise test, ageing test and voltage drop ...
Table 5 ? Values of test current for temperature-rise test, ageing test and voltage drop ...
Table D.1 – Operating cycles
Table D.2 – Values of test current for temperature-rise test, ageing test and voltage dro...
Table D.3 – Values of test current for temperature-rise test, ageing test and voltage dro...
Table D.4 – Short-time withstand current and corresponding wire sizes in mm2
Table D.5 ? Short-time withstand current and corresponding wire sizes in AWG
Fran?ais
SOMMAIRE
AVANT-PROPOS
1 Généralités
1.1 Domaine d'application
1.2 Références normatives
2 Définitions
3 Classification
4 Caractéristiques
4.1 Enumération des caractéristiques
4.2 Type du bloc de jonction
4.3 Valeurs assignées et valeurs limites
5 Information sur le matériel
5.1 Marquage
5.2 Informations complémentaires
6 Conditions normales de service, de montage et de transport
7 Dispositions relatives à la construction et au fonctionnement
7.1 Dispositions constructives
7.2 Dispositions relatives au fonctionnement
7.3 Compatibilité électromagnétique (CEM)
8 Essais
8.1 Nature des essais
8.2 Généralités
8.3 Vérification des caractéristiques mécaniques
8.4 Vérification des caractéristiques électriques
8.5 Vérification des caractéristiques thermiques
8.6 Vérification des caractéristiques de CEM
Annexe A Vide
Annexe B (informative) Points faisant l'objet d'un accord entre le constructeur et l'util...
Annexe C Vide
Annexe D (normative) Exigences supplémentaires pour les blocs de jonction de déconnexion ...
Bibliographie
Figures
Figure 1 ? Disposition pour l'essai de 8.3.2
Figure 2 ? Disposition pour les essais selon 8.4.5 et 8.4.7, et pour la vérification de l...
Figure 3 ? Disposition pour l'essai selon 8.5
Figure 4 ? Point de contact de la flamme d'essai (vue depuis la couche située sous le blo...
Figure D.1 – Exigences d'essai selon D.8.4.4 pour la vérification de la chute de tension
Tableaux
Tableau 1 ? Sections normales des conducteurs ronds en cuivre
Tableau 2 ? Relation entre la section assignée et la capacité assignée de raccordement de...
Tableau 3 ? Paramètres de l'essai de tenue
Tableau 4 ? Valeurs des courants d'essai pour les essais d'échauffement, de vieillissemen...
Tableau 5 ? Valeurs des courants d'essai pour les essais d'échauffement, de vieillissemen...
Tableau?D.1 – Cycles de manoeuvre
Tableau D.2 ? Valeurs des courants d'essai pour les essais d'échauffement, de vieillissem...
Tableau D.3 ? Valeurs des courants d'essai pour les essais d'échauffement, de vieillissem...
Tableau?D.4 – Courant de courte durée admissible et section de conducteur correspondante ...
Tableau?D.5 – Courant de courte durée admissible et section de conducteur correspondante ...
  
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File Size:  882KB
Tile in English:  Low-voltage switchgear and controlgear - Part 7-1: Ancillary equipment - Terminal blocks for copper conductors

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