EN 61629-1:1996
(Main)Aramid pressboard for electrical purposes - Part 1: Definitions, designations and general requirements
Aramid pressboard for electrical purposes - Part 1: Definitions, designations and general requirements
Contains the definitions, designations and general requirements of aramid pressboard for electrical purposes. The selection of these materials is also recommended for use in applications other than electrical insulation.
Aramid-Tafelpreßspan für elektrotechnische Zwecke - Teil 1: Definitionen, Bezeichnungen und allgemeine Anforderungen
Carton comprimé aramide à usages électriques - Partie 1: Définitions, désignations et prescriptions générales
Indique les définitions, désignations et prescriptions générales du carton comprimé aramide à usages électriques. Le choix des ces matériaux est aussi recommandé pour d'autres types d'applications que l'isolation électrique.
Aramid pressboard for electrical purposes - Part 1: Definitions, designations and general requirements (IEC 61629-1:1996)
General Information
- Status
- Published
- Publication Date
- 09-Dec-1996
- Withdrawal Date
- 30-Jun-1997
- Technical Committee
- CLC/SR 15 - Insulating materials
- Drafting Committee
- IEC/TC 15 - IEC_TC_15
- Parallel Committee
- IEC/SC 15C - IEC_SC_15C
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 29-Dec-2025
- Completion Date
- 06-Jan-2026
Overview
EN 61629-1:1996 is a European standard developed by the CLC (European Committee for Electrotechnical Standardization) that specifies the definitions, designations, and general requirements for aramid pressboard for electrical purposes. Aramid pressboard is a high-performance insulating material made from aramid fibers, known for its excellent thermal resistance and mechanical strength. Although primarily designed for electrical insulation, this standard acknowledges the material's suitability for other specialized applications due to its unique properties.
This standard is aligned with IEC 61629-1:1996 and provides a foundational framework for manufacturers, designers, and users involved in the selection and application of aramid pressboard in electrical equipment.
Key Topics
Definitions: Clarifies terminology related to aramid pressboard, including production methods and fiber characteristics. Aramid pressboard consists of polyamide fibers with at least 85% amide linkage attached directly to aromatic rings, ensuring high heat resistance.
Material Types and Designations: Four types of aramid pressboard are defined based on density and manufacturing processes:
- APB-LD: Low Density (0.5 to 0.7 g/cm³)
- APB: Standard Density (0.6 to 1.0 g/cm³)
- APB-C: Medium Density, Calendered (0.8 to 1.1 g/cm³)
- APB-HD: High Density, Heat Compressed (1.0 to 1.2 g/cm³)
General Requirements:
- Composition: Manufactured exclusively from high-temperature resistant aramid fibers.
- Finish: Boards must be flat, free from surface defects, and have trimmed edges. Surface texture varies with density type.
- Machinability: Should allow cutting, sawing, and punching without cracking or ragging.
- Thickness: Defines preferred nominal thicknesses per type and acceptable deviations.
- Packaging: Materials must be protected adequately during storage and transport.
- Marking: Every batch must carry clear identification codes, and marking materials used must be electrically neutral and non-polluting to oils.
Applications
EN 61629-1:1996 is instrumental in ensuring consistent quality and performance of aramid pressboard intended for use in electrical insulation components such as transformers, switchgear, and other high-voltage equipment. The standard guides the selection of materials that require:
- High thermal stability to withstand elevated operating temperatures.
- Mechanical robustness to endure manufacturing and installation processes.
- Electrical insulation properties for safe and reliable performance in electrical applications.
Beyond electrical insulation, aramid pressboard's superior strength, dimensional stability, and heat resistance make it suitable for mechanical parts, protective barriers, or other industrial uses where conventional materials fall short.
Related Standards
To ensure comprehensive understanding and application, EN 61629-1:1996 should be considered alongside the following related standards in the IEC 1629 series:
- EN 61629-2: Methods of Test for Aramid Pressboard
- EN 61629-3: Specifications for Individual Materials of Aramid Pressboard
Other relevant standards include earlier IEC specs for pressboard insulation materials such as:
- IEC 641-1: Definitions and general requirements for pressboard and presspaper
- IEC 641-2: Test methods for pressboard materials
- IEC 641-3-1: Specification sheets for various individual pressboard types
These documents collectively support high-quality production, testing, and application of insulating pressboard materials in the electrical industry.
Keywords: Aramid pressboard, electrical insulation, EN 61629-1, IEC 61629-1, aramid fibers, electrical insulating materials, high-temperature electrical insulation, pressboard designations, calendered aramid pressboard, high-density aramid pressboard, electrical equipment materials.
Frequently Asked Questions
EN 61629-1:1996 is a standard published by CLC. Its full title is "Aramid pressboard for electrical purposes - Part 1: Definitions, designations and general requirements". This standard covers: Contains the definitions, designations and general requirements of aramid pressboard for electrical purposes. The selection of these materials is also recommended for use in applications other than electrical insulation.
Contains the definitions, designations and general requirements of aramid pressboard for electrical purposes. The selection of these materials is also recommended for use in applications other than electrical insulation.
EN 61629-1:1996 is classified under the following ICS (International Classification for Standards) categories: 29.040.20 - Insulating gases. The ICS classification helps identify the subject area and facilitates finding related standards.
You can purchase EN 61629-1:1996 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-junij-1998
Aramid pressboard for electrical purposes - Part 1: Definitions, designations and
general requirements (IEC 61629-1:1996)
Aramid pressboard for electrical purposes -- Part 1: Definitions, designations and general
requirements
Aramid-Tafelpreßspan für elektrotechnische Zwecke -- Teil 1: Definitionen,
Bezeichnungen und allgemeine Anforderungen
Carton comprimé aramide à usages électriques -- Partie 1: Définitions, désignations et
prescriptions générales
Ta slovenski standard je istoveten z: EN 61629-1:1996
ICS:
29.035.10 Papirni in kartonski izolacijski Paper and board insulating
materiali materials
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
NORME
CEI
INTERNATIONALE
IEC
1629-1
INTERNATIONAL
Première édition
STANDARD
First edition
1996-10
Carton comprimé aramide
à usages électriques –
Partie 1:
Définitions, désignations et prescriptions
générales
Aramid pressboard for electrical
purposes –
Part 1:
Definitions, designations and
general requirements
CEI 1996 Droits de reproduction réservés Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized
utilisée sous quelque forme que ce soit et par aucun procédé, in any form or by any means, electronic or mechanical,
électronique ou mécanique, y compris la photocopie et les including photocopying and microfilm, without permission
microfilms, sans l'accord écrit de l'éditeur. in writing from the publisher
Bureau central de la Commission Electrotechnique Internationale 3, rue de Varembé Genève, Suisse
CODE PRIX
Commission Electrotechnique Internationale
E
International Electrotechnical Commission PRICE CODE
Pour prix, voir catalogue en vigueur
For price, see current catalogue
1269-1 © IEC:1996 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ARAMID PRESSBOARD FOR ELECTRICAL PURPOSES –
Part 1: Definitions, designations and general requirements
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization
comprising all national electrotechnical committees (IEC National Committees). The object of the IEC is to
promote international co-operation on all questions concerning standardization in the electrical and electronic
fields. To this end and in addition to other activities, the IEC publishes International Standards. Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt
with may participate in this preparatory work. International, governmental and non-governmental organizations
liaising with the IEC also participate in this preparation. The IEC collaborates closely with the International
Organization for Standardization (ISO) in accordance with conditions determined by agreement between the
two organizations.
2) The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, an
international consensus of opinion on the relevant subjects since each technical committee has representation
from all interested National Committees.
3) The documents produced have the form of recommendations for international use and are published in the
form of standards, technical reports or guides and they are accepted by the National Committees in that
sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the
subject of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 1629-1 has been prepared by sub-committee 15C: Specifications, of
IEC
...
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