EN IEC 60433:2021
(Main)Insulators for overhead lines with a nominal voltage above 1000 V - Ceramic insulators for AC systems - Characteristics of insulator units of the long rod type
Insulators for overhead lines with a nominal voltage above 1000 V - Ceramic insulators for AC systems - Characteristics of insulator units of the long rod type
IEC 60433:2021 is applicable to string insulator units of the long rod type with insulating parts of ceramic material intended for use in AC overhead power lines with a nominal voltage greater than 1000 V and a frequency not greater than 100 Hz. It is also applicable to insulators of similar design, used in substations. This document is applicable to ceramic string insulator units of the long rod type, either with a clevis end fitting at both ends for coupling with a tongue, or with a socket end fitting at both ends for coupling with a pin ball. The object of this document is to prescribe specified values for electrical and mechanical characteristics, and for the principal dimensions of ceramic string insulator units of the long rod type. This fourth edition cancels and replaces the third edition published in 1998. This edition includes the following significant technical changes with respect to the previous edition: - wording in Scope changed from "should" to "are intended to"; - new normative references added; - title of Clause 4 amended, new Note 4 added; - Table 1 expanded to include more specified mechanical failing loads.
Isolatoren für Freileitungen mit einer Nennspannung über 1 000 V - Keramikisolatoren für Wechselstromsysteme - Kenngrößen von Kettenisolatoren in Langstabausführung
Isolateurs pour lignes aériennes de tension nominale supérieure à 1 000 V - Isolateurs en céramique pour réseaux à tension alternative - caractéristiques d'isolateurs du type à long fût
L'IEC 60433:2021 s'applique aux éléments de chaînes d'isolateurs du type à long fût ayant des parties isolantes en matière céramique destinés aux lignes aériennes fonctionnant en courant alternatif à une tension nominale supérieure à 1 000 V et à une fréquence au plus égale à 100 Hz. Elle s'applique également aux isolateurs du même type utilisés dans les postes. Le présent document s'applique aux éléments de chaînes d’isolateurs en céramique du type à long fût ayant à chaque extrémité soit une chape destinée à recevoir un tenon, soit un logement de rotule pour assemblage avec une tige à rotule. Le présent document a pour objet de prescrire des valeurs spécifiées pour les caractéristiques électriques et mécaniques et pour les principales dimensions des éléments de chaînes d'isolateurs en céramique du type à long fût. Cette quatrième édition annule et remplace la troisième édition parue en 1998. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: - reformulation du domaine d'application: "il convient d’utiliser les caractéristiques mécaniques ainsi que les longueurs L (voir Article 4) de la présente norme " remplacé par "les caractéristiques mécaniques ainsi que les longueurs L (voir Article 4) de la présente norme sont prévues pour être utilisées"; - ajout de nouvelles références normatives; - modification du titre de l'Article 4, ajout d'une nouvelle Note 4; - Le Tableau 1 a été étoffé pour intégrer un plus grand nombre de charges de rupture mécanique spécifiées.
Izolatorji za nadzemne vode za nazivne napetosti nad 1000 V - Keramični izolatorji za izmenične sisteme - Karakteristike izolatorskih členov za paličaste izolatorje (IEC 60433:2021)
General Information
- Status
- Published
- Publication Date
- 25-Feb-2021
- Technical Committee
- CLC/SR 36 - Insulators for substations
- Drafting Committee
- IEC/TC 36 - IEC_TC_36
- Current Stage
- 6060 - Document made available - Publishing
- Start Date
- 26-Feb-2021
- Completion Date
- 26-Feb-2021
Relations
- Effective Date
- 26-Jan-2023
Overview - EN IEC 60433:2021 (Long rod ceramic insulators)
EN IEC 60433:2021 specifies the characteristics of ceramic string insulator units of the long rod type for AC overhead lines with a nominal voltage above 1 000 V and frequency up to 100 Hz. Published as the fourth edition in 2021, this CLC-adopted standard covers long rod insulators with either clevis or socket end fittings used on transmission lines and similar substation applications. The document prescribes the principal electrical and mechanical characteristics, maximum dimensions and minimum creepage distances for use primarily in lightly polluted environments.
Key topics and requirements
- Scope and applicability: Long rod, ceramic (porcelain) insulator units for AC overhead power lines >1 kV and ≤100 Hz; also applicable to similar designs in substations.
- Design types: Two coupling types-clevis (for tongue) and socket (for pin-ball).
- Electrical characteristics:
- Standard lightning impulse withstand voltage (referencing IEC 60071-1).
- Wet power-frequency withstand voltage.
- Mechanical characteristics:
- Specified tensile mechanical failing loads (expanded ranges in this edition).
- Maximum nominal length L and maximum nominal diameter D of the insulating part.
- Creepage distance guidance:
- Minimum nominal creepage distances based on a unified specific creepage of 27.8 mm/kV for SPS class (light pollution) per IEC TS 60815-2.
- Allows adjustments for non-polluted or heavily polluted sites, with note that exceptionally long creepage may require larger L.
- Designation and marking:
- Standard designation format: L [load kN] B/C [impulse kV] (example: L160 B550).
- Exclusions and notes:
- The standard does not include test procedures nor dimensions of end fittings.
- Rod diameter is not specified (depends on ceramic material properties).
Practical applications and users
Who uses EN IEC 60433:2021:
- Utility engineers specifying insulators for high-voltage overhead transmission lines.
- Insulator and porcelain manufacturers designing long rod units to meet European/CENELEC requirements.
- Procurement and specification writers preparing tender documents for transmission and substation equipment.
- Design consultants assessing creepage requirements for pollution severity and environmental conditions.
- Standards committees and conformity assessment bodies referencing harmonized electrical/mechanical parameters.
How it’s used:
- To define required mechanical failing load, impulse withstand voltages, and minimum creepage distance when selecting or specifying long rod ceramic insulators.
- To ensure interoperability with coupling standards (IEC 60120 for ball & socket; IEC 60471 for clevis/tongue).
Related standards (for further reference)
- IEC 60383-1 - Definitions, test methods and acceptance criteria for ceramic or glass insulators.
- IEC 60071-1 - Insulation coordination and impulse withstand voltages.
- IEC TS 60815-2 - Selection of insulators based on site pollution severity.
- IEC 60120, IEC 60471 - Coupling and fitting standards.
- IEC 60672-1 / IEC 60672-3 - Ceramic insulating material classification.
Keywords: EN IEC 60433:2021, long rod insulators, ceramic insulators, overhead lines, creepage distance, mechanical failing load, lightning impulse withstand voltage, clevis, socket.
Frequently Asked Questions
EN IEC 60433:2021 is a standard published by CLC. Its full title is "Insulators for overhead lines with a nominal voltage above 1000 V - Ceramic insulators for AC systems - Characteristics of insulator units of the long rod type". This standard covers: IEC 60433:2021 is applicable to string insulator units of the long rod type with insulating parts of ceramic material intended for use in AC overhead power lines with a nominal voltage greater than 1000 V and a frequency not greater than 100 Hz. It is also applicable to insulators of similar design, used in substations. This document is applicable to ceramic string insulator units of the long rod type, either with a clevis end fitting at both ends for coupling with a tongue, or with a socket end fitting at both ends for coupling with a pin ball. The object of this document is to prescribe specified values for electrical and mechanical characteristics, and for the principal dimensions of ceramic string insulator units of the long rod type. This fourth edition cancels and replaces the third edition published in 1998. This edition includes the following significant technical changes with respect to the previous edition: - wording in Scope changed from "should" to "are intended to"; - new normative references added; - title of Clause 4 amended, new Note 4 added; - Table 1 expanded to include more specified mechanical failing loads.
IEC 60433:2021 is applicable to string insulator units of the long rod type with insulating parts of ceramic material intended for use in AC overhead power lines with a nominal voltage greater than 1000 V and a frequency not greater than 100 Hz. It is also applicable to insulators of similar design, used in substations. This document is applicable to ceramic string insulator units of the long rod type, either with a clevis end fitting at both ends for coupling with a tongue, or with a socket end fitting at both ends for coupling with a pin ball. The object of this document is to prescribe specified values for electrical and mechanical characteristics, and for the principal dimensions of ceramic string insulator units of the long rod type. This fourth edition cancels and replaces the third edition published in 1998. This edition includes the following significant technical changes with respect to the previous edition: - wording in Scope changed from "should" to "are intended to"; - new normative references added; - title of Clause 4 amended, new Note 4 added; - Table 1 expanded to include more specified mechanical failing loads.
EN IEC 60433:2021 is classified under the following ICS (International Classification for Standards) categories: 29.080.10 - Insulators; 29.240.20 - Power transmission and distribution lines. The ICS classification helps identify the subject area and facilitates finding related standards.
EN IEC 60433:2021 has the following relationships with other standards: It is inter standard links to EN 60433:1998. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase EN IEC 60433:2021 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CLC standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-november-2021
Nadomešča:
SIST EN 60433:2000
Izolatorji za nadzemne vode za nazivne napetosti nad 1000 V - Keramični izolatorji
za izmenične sisteme - Karakteristike izolatorskih členov za paličaste izolatorje
(IEC 60433:2021)
Insulators for overhead lines with a nominal voltage above 1000 V - Ceramic insulators
for AC systems - Characteristics of insulator units of the long rod type (IEC 60433:2021)
Isolatoren für Freileitungen mit einer Nennspannung über 1 000 V - Keramische
Isolatoren für Wechselstromsysteme - Kenngrößen von Kettenisolatoren in
Langstabausführung (IEC 60433:2021)
Isolateurs pour lignes aériennes de tension nominale supérieure à 1 000 V - Isolateurs
en céramique pour réseaux à tension alternative - caractéristiques des éléments
d'isolateurs du type à long fût (IEC 60433:2021)
Ta slovenski standard je istoveten z: EN IEC 60433:2021
ICS:
29.080.10 Izolatorji Insulators
29.240.20 Daljnovodi Power transmission and
distribution lines
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN IEC 60433
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2021
ICS 29.080.10; 29.240.20 Supersedes EN 60433:1998 and all of its amendments
and corrigenda (if any)
English Version
Insulators for overhead lines with a nominal voltage above
1 000 V - Ceramic insulators for AC systems - Characteristics of
insulator units of the long rod type
(IEC 60433:2021)
Isolateurs pour lignes aériennes de tension nominale Isolatoren für Freileitungen mit einer Nennspannung über
supérieure à 1 000 V - Isolateurs en céramique pour 1 000 V - Keramische Isolatoren für Wechselstromsysteme
réseaux à tension alternative - caractéristiques des - Kenngrößen von Kettenisolatoren in Langstabausführung
éléments d'isolateurs du type à long fût (IEC 60433:2021)
(IEC 60433:2021)
This European Standard was approved by CENELEC on 2021-02-16. 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 CEN-CENELEC
Management Centre 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 CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 60433:2021 E
European foreword
The text of document 36/498/FDIS, future edition 4 of IEC 60433, prepared by IEC/TC 36 "Insulators"
was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2021-11-16
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2024-02-16
document have to be withdrawn
This document supersedes EN 60433:1998 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Endorsement notice
The text of the International Standard IEC 60433:2021 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:
IEC 60071-1 NOTE Harmonized as EN IEC 60071-1
IEC 60120 NOTE Harmonized as EN IEC 60120
IEC 60471 NOTE Harmonized as EN IEC 60471
IEC 60672-1 NOTE Harmonized as EN 60672-1
IEC 60672-3 NOTE Harmonized as EN 60672-3
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 1 Where an International Publication has been modified by common modifications, indicated by (mod), the
relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60383-1 - Insulators for overhead lines with a EN 60383-1 -
nominal voltage above 1000 V - Part 1:
Ceramic or glass insulator units for a.c.
systems - Definitions, test methods and
acceptance criteria
IEC 60433 ®
Edition 4.0 2021-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Insulators for overhead lines with a nominal voltage above 1 000 V – Ceramic
insulators for AC systems – Characteristics of insulator units of the long rod
type
Isolateurs pour lignes aériennes de tension nominale supérieure a 1 000 V –
Isolateurs en céramique pour réseaux à tension alternative – Caractéristiques
des éléments d'isolateurs du type a long fût
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.080.10; 29.240.20 ISBN 978-2-8322-9204-4
– 2 – IEC 60433:2021 © IEC 2021
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Characteristics, dimensions and type of long rod insulators . 6
5 Designation and marking . 6
Bibliography . 11
Figure 1 – Long rod insulator with clevis couplings, type C . 10
Figure 2 – Long rod insulator with socket couplings, type B . 10
Table 1 – Specified values for long rod insulators . 8
IEC 60433:2021 © IEC 2021 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INSULATORS FOR OVERHEAD LINES
WITH A NOMINAL VOLTAGE ABOVE 1 000 V –
CERAMIC INSULATORS FOR AC SYSTEMS –
CHARACTERISTICS OF INSULATOR UNITS OF THE LONG ROD TYPE
FOREWORD
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all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60433 has been prepared by IEC technical committee 36:
Insulators.
This fourth edition cancels and replaces the third edition published in 1998. This edition
constitutes a technical revision.
This edition inclu
...
The article discusses the EN IEC 60433:2021 standard for ceramic insulators used in overhead power lines with a voltage above 1000 V and frequency not exceeding 100 Hz. This standard applies to string insulator units of the long rod type, both with clevis end fitting and socket end fitting. The document specifies values for electrical and mechanical characteristics, as well as the dimensions of these insulator units. This fourth edition of the standard includes changes such as updated wording in the scope, additional references, and an expanded table for specified mechanical failing loads. It replaces the previous edition published in 1998.
기사 제목: EN IEC 60433:2021 - 1000 V 이상의 명목 전압을 가진 공중선용 절연자 - 교류 시스템용 도자기 절연자 - 장봉형 절연자 유닛의 특성 기사 내용: IEC 60433:2021은 1000 V 이상의 명목 전압과 100 Hz 이하의 주파수로 동작하는 교류 공중 전원선에서 사용하기 위한 도자기 재료로 구성된 장봉형 절연자 유닛에 적용됩니다. 또한 이 규격은 변전소에서 사용되는 동일한 디자인의 절연자에도 적용됩니다. 이 문서는 장봉형 절연자 유닛의 전기적 및 기계적 특성 및 주요 치수에 대한 지정값을 규정하는 것을 목적으로 합니다. 이번 네 번째 판은 1998년에 발행된 이전 세 번째 판을 대체합니다. 이번 판에는 이전 판에 비해 다음과 같은 중요한 기술적 변경 사항이 포함되어 있습니다. - 범위의 문구가 "해야한다" 에서 "계획된 것"으로 변경됨. - 새로운 규범적 참조 추가. - 4조 제목 수정, 새로운 참고 4 추가. - 표 1이 더 많은 지정된 기계적 파괴 하중을 포함하기 위해 확장됨.
The article discusses the EN IEC 60433:2021 standard, which applies to ceramic insulators used in AC overhead power lines with a voltage above 1000 V and a frequency not exceeding 100 Hz. It also applies to similar insulators used in substations. The standard specifies electrical and mechanical characteristics and dimensions for ceramic string insulator units of the long rod type. The fourth edition of the standard includes changes such as updated wording, new references, and an expanded table for mechanical failing loads.
記事のタイトル:EN IEC 60433:2021 - 電圧1000V以上の送電線用の絶縁子 - 交流システム用セラミック絶縁子 - 長い棒型絶縁子ユニットの特性 記事の内容:IEC 60433:2021は、電圧1000V以上で周波数が100Hz以下の交流送電線で使用するための、セラミック材料で作られた長い棒型絶縁器ユニットに適用されます。また、変電所で使用される類似のデザインの絶縁子にも適用されます。この規格は、長い棒型絶縁子ユニットのうち、両端にトングとカップリングするためのクレビスエンドフィッティングを持つもの、または両端にピンボールとカップリングするためのソケットエンドフィッティングを持つものの、セラミックストリング絶縁器ユニットの電気的および機械的特性、主要寸法を規定することを目的としています。この第4版は1998年に発行された第3版を置き換え、以下の重要な技術的変更が含まれています: - 適用範囲の文言が「should」から「are intended to」に変更されました。 - 新たな規範的参照が追加されました。 - 第4節のタイトルが修正され、新しいノート4が追加されました。 - テーブル1が拡張され、特定の機械的破損負荷が追加されました。
기사 제목: EN IEC 60433:2021 - 1000V 이상 명목 전압을 갖는 공중전선용 절연체 - 교류 시스템용 세라믹 절연체 - 긴 막대형 절연체 유닛의 특성 기사 내용: IEC 60433:2021은 1000V 이상 명목 전압과 100Hz 이하 주파수의 교류 공중 전력선에서 사용하기 위해 세라믹 재질로 된 절연 부품이 있는 긴 막대형 절연체 유닛에 적용됩니다. 또한, 변전소에서 사용되는 유사한 디자인의 절연체에도 적용됩니다. 이 문서는 긴 막대형 절연체 유닛 중 칼버트연결커플링을 위해 양쪽에 체스트날개 형태의 엔드 피팅이 있는 경우 또는 핀 벼룩과 커플링하기 위해 양쪽에 소켓 엔드 피팅이 있는 경우의 세라믹 장봉형 절연체 유닛에 대한 특정한 전기 및 기계적 특성, 주요 치수를 규정하기 위한 것입니다. 이번 제4판은 1998년에 발표된 제3판을 대체하며, 기존 판에 비해 다음과 같은 중요한 기술적 변경 사항을 포함하고 있습니다: - 적용 범위의 문구 변경 ("should"에서 "are intended to"로 변경) - 새로운 규정적 참조 추가 - 제4절 제목 변경 및 새로운 4번 노트 추가 - 특정한 기계적 파손 하중을 포함하는 테이블 1 확장
記事のタイトル:EN IEC 60433:2021 - 高圧1000 V以上の架空送電線用の絶縁体 - 交流システム用のセラミック絶縁体 - 長い棒型の絶縁体ユニットの特性 記事の内容:IEC 60433:2021は、1000 V以上の名目電圧および100 Hz以下の周波数で動作するAC架空送電線で使用するためのセラミック素材から構成された長い棒型絶縁体ユニットに適用されます。また、変電所で使用される同様のデザインの絶縁体にも適用されます。この文書の目的は、長い棒型絶縁体ユニットの電気的および機械的特性、および主要な寸法の指定値を規定することです。この第4版は、1998年に発行された前の第3版に取って代わります。今回の版では、以前の版に対して以下の重要な技術的変更が含まれています:-範囲の文言が「しなければならない」から「予定されている」に変更されました。-新しい規範的参照が追加されました。-第4条のタイトルが変更され、新たな注記4が追加されました。-表1がより具体的な機械的破損荷重を含むよう拡張されました。










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