EN 60664-1:2007

Insulation coordination for equipment within low-voltage systems - Part 1: Principles, requirements and tests

Deals with insulation coordination for equipment within low-voltage systems. It applies to equipment for use up to 2 000 m above sea level having a rated voltage up to a.c. 1 000 V with rated frequencies up to 30 kHz, or a rated voltage up to d.c. 1 500 V. It specifies the requirements for clearances, creepage distances and solid insulation for equipment based upon their performance criteria. It includes methods of electric testing with respect to insulation coordination. The minimum clearances specified in this standard do not apply where ionized gases occur. Special requirements for such situations may be specified at the discretion of the relevant technical committee. This standard does not deal with distances - through liquid insulation, - through gases other than air, - through compressed air. Main changes have been made with respect to the previous edition: - Amendment of Japanese mains conditions with regard to the rated impulse voltages, the rationalized voltages and the nominal voltages of supply systems for different modes of overvoltage control - Amendment of dimensioning of clearances smaller than 0,01 mm - Alignment of the table and the corresponding formula regarding test voltages for verifying clearances at different altitudes - Amendment of interpolation of the creepage distance values for functional insulation - Amendment of creepage distance dimensioning taking into account ribs - Revision of the former Clause 4 'Tests and measurements' (now Clause 6) to achieve a more detailed description of the tests and their purpose, the test equipment and possible alternatives - Change of Annex C 'Partial discharge test methods' from a former technical report, Type 2 (now called TS), to a normative Annex C. Has the status of a basic safety publication in accordance with IEC Guide 104.

Isolationskoordination für elektrische Betriebsmittel in Niederspannungsanlagen - Teil 1: Grundsätze, Anforderungen und Prüfungen

Coordination de l'isolement des matériels dans les systèmes (réseaux) à basse tension - Partie 1: Principes, exigences et essais

Traite de la coordination de l'isolement des matériels dans les systèmes (réseaux) à basse tension. Elle s'applique au matériel utilisé jusqu'à 2 000 m au-dessus du niveau de la mer, ayant une tension assignée ne dépassant pas 1 000 V en courant alternatif, de fréquences assignées ne dépassant pas 30 kHz, ou une tension assignée ne dépassant pas 1 500 V en courant continu. Définit les exigences pour des distances d'isolement dans l'air, des lignes de fuite et l'isolation solide des matériels, à partir de leurs critères de performance. Elle comprend les méthodes d'essais diélectriques concernant la coordination de l'isolement. Les distances minimales d'isolement dans l'air spécifiées dans la présente norme ne s'appliquent pas en présence de gaz ionisés. Les exigences particulières dans de telles conditions peuvent être spécifiées, comme ils l'entendent, par les comités d'études compétents. Ne traite pas des distances - à travers l'isolation liquide, - à travers les gaz autres que l'air, - à travers l'air comprimé. Les principales modifications suivantes ont été apportées à l'édition antérieure: - Modification des conditions du réseau électrique au Japon en ce qui concerne les tensions assignées de choc, les tensions rationalisées et les tensions nominales des réseaux d'alimentation pour différents modes de contrôle des surtensions - Modification du dimensionnement des distances d'isolement dans l'air inférieures à 0,01 mm - Alignement du tableau et des formules correspondantes concernant les tensions d'essai pour la vérification des distances d'isolement dans l'air à différentes altitudes - Modification de l'interpolation des valeurs de ligne de fuite pour l'isolation fonctionnelle - Modification du dimensionnement des lignes de fuite tenant compte des nervures - Révision de l'ancien Article 4 'Essais et mesures' (désormais Article 6) pour obtenir une description plus détaillée des essais et de leur objet, du matériel d'essai et des alternatives existantes - Transformation de l'Annexe C 'Méthodes d'essai de décharge partielle' d'un ancien rapport technique de type 2 (désigné désormais TS) en une Annexe C normative. A le statut de publication fondamentale de sécurité, conformément au Guide CEI 104.

Uskladitev izolacije za opremo v okviru nizkonapetostnih sistemov - 1. del: Načela, zahteve in preskusi (IEC 60664-1:2007)

General Information

• Status: Withdrawn
• Publication Date: 12-Jul-2007
• ICS: 29.080 - Insulation
• ICS: 29.080.30 - Insulation systems
• Technical Committee: CLC/SR 109 - Insulation co-ordination for low-voltage equipment
• Drafting Committee: IEC/TC 109 - IEC_TC_109
• Parallel Committee: IEC/TC 109 - IEC_TC_109
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 30-Jun-2023
• Completion Date: 30-Jun-2023
• 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
• Directive: 73/23/EEC - Electrical equipment designed for use within certain voltage limits
• Ref Project: SIST EN 60664-1:2007 - Insulation coordination for equipment within low-voltage systems -- Part 1: Principles, requirements and tests

Relations

• Replaces: EN 60664-1:2003 - Insulation coordination for equipment within low-voltage systems - Part 1: Principles, requirements and tests
• Effective Date: 29-Jan-2023
• Replaced By: EN IEC 60664-1:2020 - Insulation coordination for equipment within low-voltage supply systems - Part 1: Principles, requirements and tests
• Effective Date: 07-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
01-november-2007
1DGRPHãþD
SIST EN 60664-1:2004
8VNODGLWHYL]RODFLMH]DRSUHPRYRNYLUXQL]NRQDSHWRVWQLKVLVWHPRYGHO1DþHOD
]DKWHYHLQSUHVNXVL,(&
Insulation coordination for equipment within low-voltage systems - Part 1: Principles,
requirements and tests
Isolationskoordination für elektrische Betriebsmittel in Niederspannungsanlagen - Teil 1:
Grundsätze, Anforderungen und Prüfungen
Coordination de l'isolement des matériels dans les systemes (réseaux) a basse tension -
Partie 1: Principes, exigences et essais
Ta slovenski standard je istoveten z: EN 60664-1:2007
ICS:
29.080.30 Izolacijski sistemi Insulation systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 60664-1
NORME EUROPÉENNE
July 2007
EUROPÄISCHE NORM
ICS 29.080.30; 29.080 Supersedes EN 60664-1:2003

English version
Insulation coordination for equipment
within low-voltage systems -
Part 1: Principles, requirements and tests
(IEC 60664-1:2007)
Coordination de l'isolement  Isolationskoordination
des matériels dans les systèmes für elektrische Betriebsmittel
(réseaux) à basse tension - in Niederspannungsanlagen -
Partie 1: Principes, exigences Teil 1: Grundsätze, Anforderungen
et essais und Prüfungen
(CEI 60664-1:2007) (IEC 60664-1:2007)

This European Standard was approved by CENELEC on 2007-07-01. 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: rue de Stassart 35, B - 1050 Brussels

© 2007 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60664-1:2007 E
Foreword
The text of document 109/58/CDV, future edition 2 of IEC 60664-1, prepared by IEC TC 109, Insulation
co-ordination for low-voltage equipment, was submitted to the IEC-CENELEC parallel Unique Acceptance
Procedure and was approved by CENELEC as EN 60664-1 on 2007-07-01.
This European Standard supersedes EN 60664-1:2003.
In addition to a number of editorial improvements, the following main changes have been made with
respect to EN 60664-1:2003:
− amendment of Japanese mains conditions with regard to the rated impulse voltages, the rationalized
voltages and the nominal voltages of supply systems for different modes of overvoltage control;
− amendment of dimensioning of clearances smaller than 0,01 mm;
− alignment of the table and the corresponding formula regarding test voltages for verifying clearances
at different altitudes;
− amendment of interpolation of the creepage distance values for functional insulation;
− amendment of creepage distance dimensioning taking into account ribs;
− revision of the former Clause 4 "Tests and measurements" (now Clause 6) to achieve a more detailed
description of the tests and their purpose, the test equipment and possible alternatives;
− change of Annex C "Partial discharge test methods" from a former technical report, Type 2 (now called
TS), to a normative Annex C.
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) 2008-04-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2010-07-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60664-1:2007 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
ISO/IEC Guide 2 NOTE  Harmonized as EN 45020:1998 (not modified).
IEC 60529 NOTE  Harmonized as EN 60529:1991 + A1:2000 (not modified).
+ A1
__________
- 3 - EN 60664-1:2007
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

1)
IEC 60038 1983 IEC standard voltages HD 472 S1 1989
+ corr. February 2002
+ A1 1995
IEC 60050-151 2001 International Electrotechnical Vocabulary - -
(IEV) -
Part 151: Electrical and magnetic devices

IEC 60050-212 1990 International Electrotechnical Vocabulary - -
(IEV) -
Chapter 212: Insulating solids, liquids and
gases
IEC 60050-604 1987 International Electrotechnical Vocabulary - -
+ A1 1998 (IEV) -
Chapter 604: Generation, transmission and
distribution of electricity - Operation

IEC 60050-826 2004 International Electrotechnical Vocabulary - -
(IEV) -
Part 826: Electrical installations

2)
IEC 60068-1 1988 Environmental testing - EN 60068-1 1994
Part 1: General and guidance
3)
IEC 60068-2-2 1974 Environmental testing - EN 60068-2-2 1993
Part 2: Tests - Tests B: Dry heat

4)
IEC 60068-2-14 1984 Environmental testing - EN 60068-2-14 1999
Part 2: Tests - Test N: Change of temperature

IEC 60068-2-78 2001 Environmental testing - EN 60068-2-78 2001
Part 2-78: Tests - Test Cab: Damp heat,
steady state
IEC 60085 2004 Electrical insulation - Thermal classification EN 60085 2004

IEC 60099-1 1991 Surge arresters - EN 60099-1 1994
Part 1: Non-linear resistor type gapped surge
arresters for a.c. systems
1)
The title of HD 472 S1 is: Nominal voltages for low voltage public electricity supply systems.
2)
EN 60068-1 includes A1:1992 to IEC 60068-1 + corr. October.
3)
EN 60068-2-2 includes supplement A to IEC 60068-2-2.
4)
EN 60068-2-14 includes A1:1986 to IEC 60068-2-14.

Publication Year Title EN/HD Year
IEC 60112 2003 Method for the determination of the proof and EN 60112 2003
the comparative tracking indices of solid
insulating materials
IEC 60216 Series Electrical insulating materials - Properties of EN 60216 Series
thermal endurance
IEC 60243-1 1998 Electrical strength of insulating materials - EN 60243-1 1998
Test methods -
Part 1: Tests at power frequencies

IEC 60270 2000 High-voltage test techniques - Partial EN 60270 2001
discharge measurements
IEC 60364-4-44 2001 Electrical installations of buildings - - -
+ A1 (mod) 2003 Part 4-44: Protection for safety - Protection
against voltage disturbances and
electromagnetic disturbances
IEC 60664-4 2005 Insulation coordination for equipment within EN 60664-4 2006
low-voltage systems - + corr. October 2006
Part 4: Consideration of high-frequency
voltage stress
5) 6)
IEC 60664-5 - Insulation coordination for equipment within EN 60664-5 2003
low-voltage systems -
Part 5: A comprehensive method for
determining clearances and creepage
distances equal to or less than 2 mm

IEC 61140 2001 Protection against electric shock - Common EN 61140 2002
A1 (mod) 2004 aspects for installation and equipment A1 2006

IEC 61180-1 1992 High-voltage test techniques for low-voltage EN 61180-1 1994
equipment -
Part 1: Definitions, test and procedure
requirements
IEC 61180-2 1994 High-voltage test techniques for low-voltage EN 61180-2 1994
equipment -
Part 2: Test equipment
IEC Guide 104 1997 The preparation of safety publications and the - -
use of basic safety publications and group
safety publications
5)
Undated reference.
6)
Valid edition at date of issue.

IEC 60664-1
Edition 2.0 2007-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
BASIC SAFETY PUBLICATION
PUBLICATION FONDAMENTALE DE SÉCURITÉ
Insulation coordination for equipment within low-voltage systems –
Part 1: Principles, requirements and tests

Coordination de l’isolement des matériels dans les systèmes (réseaux)
à basse tension –
Partie 1: Principes, exigences et essais

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
XB
CODE PRIX
ICS 29.080; 29.080.30 ISBN 2-8318-9137-X

– 2 – 60664-1 © IEC:2007
CONTENTS
1 Scope and object.7
2 Normative references .7
3 Terms and definitions .9
4 Basis for insulation coordination .14
4.1 General .14
4.2 Insulation coordination with regard to voltage.14
4.2.1 General .14
4.2.2 Insulation coordination with regard to long-term a.c. or d.c. voltages .15
4.2.3 Insulation coordination with regard to transient overvoltage.15
4.2.4 Insulation coordination with regard to recurring peak voltage.15
4.2.5 Insulation coordination with regard to temporary overvoltage.15
4.2.6 Insulation coordination with regard to environmental conditions.16
4.3 Voltages and voltage ratings .16
4.3.1 General .16
4.3.2 Determination of voltage for long-term stresses .16
4.3.3 Determination of rated impulse voltage.17
4.3.4 Determination of recurring peak voltage .19
4.3.5 Determination of temporary overvoltage .19
4.4 Frequency .20
4.5 Time under voltage stress .20
4.6 Pollution.20
4.6.1 General .20
4.6.2 Degrees of pollution in the micro-environment .21
4.6.3 Conditions of conductive pollution .21
4.7 Information supplied with the equipment.21
4.8 Insulating material.21
4.8.1 Comparative tracking index (CTI) .21
4.8.2 Electric strength characteristics .22
4.8.3 Thermal characteristics .22
4.8.4 Mechanical and chemical characteristics .22
5 Requirements and dimensioning rules .23
5.1 Dimensioning of clearances.23
5.1.1 General .23
5.1.2 Dimensioning criteria .23
5.1.3 Electric field conditions.24
5.1.4 Altitude.24
5.1.5 Dimensioning of clearances of functional insulation .24
5.1.6 Dimensioning of clearances of basic, supplementary and reinforced
insulation.24
5.1.7 Isolating distances.25
5.2 Dimensioning of creepage distances .25
5.2.1 General .25
5.2.2 Influencing factors .25
5.2.3 Dimensioning of creepage distances of functional insulation.27
5.2.4 Dimensioning of creepage distances of basic, supplementa
...