SIST IEC 60839-5-5:2002

Alarm systems - Part 5: Requirements for alarm transmission systems - Section 5: Requirements for digital communicator systems using the public switched telephone network

Specifies the requirements for digital communicator systems using the public switched telephone network which are additional to those specified in IEC 60839-5-1 and IEC 60839-5-2. Covers switched connections providing event driven signalling between an alarm system and a remote centre.

Systèmes d'alarme - Partie 5: Prescriptions pour les systèmes de transmission d'alarme - Section 5: Systèmes automatiques d'établissement de communications numériques utilisant le réseau téléphonique public commuté

Spécifie les prescriptions pour les systèmes automatiques d'établissement de communications numériques utilisant le réseau téléphonique public commuté, qui sont à ajouter aux prescriptions spécifiées dans la CEI 60839-5-1 et la CEI 60839-5-2. Couvre les liaisons commutées assurant la liaison des signaux d'événements entre un système d'alarme et un centre de surveillance à distance.

Alarm systems - Part 5: Requirements for alarm transmission systems - Section 5: Requirements for digital communicator systems using the public switched telephone network

General Information

• Status: Withdrawn
• Publication Date: 31-Aug-1995
• Withdrawal Date: 20-Jun-2024
• ICS: 13.320 - Alarm and warning systems
• ICS: 35.200 - Interface and interconnection equipment
• Technical Committee: EAL - Alarm systems
• Current Stage: 9900 - Withdrawal (Adopted Project)
• Start Date: 21-Jun-2024
• Due Date: 14-Jul-2024
• Completion Date: 21-Jun-2024
• Ref Project: IEC 60811-509:2012 - Electric and optical fibre cables - Test methods for non-metallic materials - Part 509: Mechanical tests - Test for resistance of insulations and sheaths to cracking (heat shock test)

Standards Content (Sample)

SLOVENSKI STANDARD
01-junij-2002
Alarm systems - Part 5: Requirements for alarm transmission systems - Section 5:
Requirements for digital communicator systems using the public switched
telephone network
Alarm systems - Part 5: Requirements for alarm transmission systems - Section 5:
Requirements for digital communicator systems using the public switched telephone
network
Systèmes d'alarme - Partie 5: Prescriptions pour les systèmes de transmission d'alarme
- Section 5: Systèmes automatiques d'établissement de communications numériques
utilisant le réseau téléphonique public commuté
Ta slovenski standard je istoveten z: IEC 60839-5-5
ICS:
13.320 Alarmni in opozorilni sistemi Alarm and warning systems
35.200 Vmesniška in povezovalna Interface and interconnection
oprema equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

NORME CEI
INTERNATIONALE IEC
60839-5-5
INTERNATIONAL
Première édition
STAN DARD
First edition
1991-04
Systèmes d'alarme
Partie 5:
Prescriptions pour les systèmes de transmission
d'alarme
Section 5: Systèmes automatiques
d'établissement de communications numériques
utilisant le réseau téléphonique public commuté
Alarm systems
Part 5:
Requirements for alarm transmission systems
Section 5: Requirements for digital
communicator systems using the public
switched telephone network
Numéro de référence
Reference number
IEC
• CEI/IEC 60839-5-5: 1991
Numéros des publications Numbering
Depuis le ter janvier 1997, les publications de la CEI As from 1 January 1997 all IEC publications are
sont numérotées à partir de 60000. issued with a designation in the 60000 series.
Publications consolidées Consolidated publications
Les versions consolidées de certaines publications de
Consolidated versions of some IEC publications
la CEI incorporant les amendements sont disponibles. including amendments are available. For example,
Par exemple, les numéros d'édition 1.0, 1.1 et 1.2 edition numbers 1.0, 1.1 and 1.2 refer, respectively, to
indiquent respectivement la publication de base, la the base publication, the base publication incor-
publication de base incorporant l'amendement 1, et la
porating amendment 1 and the base publication
publication de base incorporant les amendements 1
incorporating amendments 1 and 2.
et 2.
Validité de la présente publication Validity of this publication
Le contenu technique des publications de la CEI est
The technical content of IEC publications is kept
constamment revu par la CEI afin qu'il reflète l'état under constant review by the IEC, thus ensuring that
actuel de la technique. the content reflects current technology.
Des renseignements relatifs à la date de reconfir- Information relating to the date of the reconfirmation
mation de la publication sont disponibles dans le
of the publication is available in the IEC catalogue.
Catalogue de la CEI.
Les renseignements relatifs à des questions à l'étude et Information on the subjects under consideration and
des travaux en cours entrepris par le comité technique work in progress undertaken by the technical
qui a établi cette publication, ainsi que la liste des committee which has prepared this publication, as well
publications établies, se trouvent dans les documents ci- as the list of publications issued, is to be found at the
dessous: following IEC sources:
• «Site web» de la CEI* • IEC web site*
• Catalogue des publications de la CEI • Catalogue of IEC publications
Publié annuellement et mis à jour Published yearly with regular updates
régulièrement (On-line catalogue)*
(Catalogue en ligne)*
• Bulletin de la CEI
•
IEC Bulletin
Disponible à la fois au «site web» de la CEI*
Available both at the IEC web site* and
et comme périodique imprimé
as a printed periodical
Terminologie, symboles graphiques
Terminology, graphical and letter
et littéraux
symbols
En ce qui concerne la terminologie générale, le lecteur
For general terminology, readers are referred to
se reportera à la CEI 60050: Vocabulaire Électro-
IEC 60050: International Electrotechnical Vocabulary
technique International (VEI).
(IEV).
Pour les symboles graphiques, les symboles littéraux
For graphical symbols, and letter symbols and signs
et les signes d'usage général approuvés par la CEI, le
approved by the IEC for general use, readers are
lecteur consultera la CEI 60027: Symboles littéraux à
referred to publications IEC 60027: Letter symbols to
utiliser en électrotechnique, la CEI 60417: Symboles
be used in electrical technology, IEC 60417: Graphical
graphiques utilisables sur le matériel. Index, relevé et
symbols for use on equipment. Index, survey and
compilation des feuilles individuelles, et la CEI 60617:
compilation of the single sheets and IEC 60617:
Symboles graphiques pour schémas.
Graphical symbols for diagrams.

* Voir adresse «site web» sur la page de titre.
* See web site address on title page.

NORME CEI
INTERNATIONALE IEC
60839 -5-5
INTERNATIONAL
Première édition
STAN
DARD
First edition
1991-04
Systèmes d'alarme
Partie 5:
Prescriptions pour les systèmes de transmission
d'alarme
Section 5: Systèmes automatiques
d'établissement de communications numériques
utilisant le réseau téléphonique public commuté
Alarm systems
Part 5:
Requirements for alarm transmission systems
Section 5: Requirements for digital
communicator systems using the public
switched telephone network
© IEC 1991 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 in
utilisée sous quelque forme que ce soit et par aucun any form or by any means, electronic or mechanical,
procédé, électronique ou mécanique, y compris la photo- including photocopying and microfilm, without permission in
copie et les microfilms, sans l'accord écrit de l'éditeur. writing from the publisher.
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For price, see current catalogue

839-5-5 © CEI
- 2 -
SOMMAIRE
Pages
AVANT-PROPOS 4
Articles
1 Domaine d'application 6
2 Références normatives 6
3 Définitions 8
4 Considérations générales 8
5 Prescriptions
6 Méthodes d'essais 16
839-5-5 ©IEC - 3 -
CONTENTS
Page
FOREWORD 5
Clause
1 Scope 7
2 Normative references 7
3 Definitions 9
4 General considerations 9
5 Requirements 9
6 Test methods 17
- 4 - 839-5-5 © CEI
COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
SYSTÈMES D'ALARME
Partie 5: Prescriptions pour les systèmes de
transmission d'alarme
Section 5: Systèmes automatiques d'établissement de
communications numériques utilisant le réseau téléphonique
public commuté
AVANT-PROPOS
1) Les décisions ou accords officiels de la CEI en ce qui concerne les questions techniques, préparés par des
Comités d'Etudes où sont représentés tous les Comités nationaux s'intéressant à ces questions, expriment
dans la plus grande mesure possible un accord international sur les sujets examinés.
2) Ces décisions constituent des recommandations internationales et sont agréées comme telles par les
Comités nationaux.
3) Dans le but d'encourager l'unification internationale, la CEI exprime le voeu que tous les Comités nationaux
adoptent dans leurs règles nationales le texte de la recommandation de la CEI, dans la mesure où les
conditions nationales le permettent. Toute divergence entre la recommandation de la CEI et la règle
nationale correspondante doit, dans la mesure du possible, être indiquée en termes clairs dans cette
dernière.
La présente section de la Norme internationale CEI 839-5 a été établie par le Comité
d'Etudes n° 79 de la CEI: Systèmes d'alarme.
Le texte de la présente section est issu des documents suivants:
Règle des Six Mois Rapport de vote Procédure des Deux Mois Rapport de vote
79(BC)22
79(BC)33 79(BC)40 79(BC)50
Les rapports de vote indiqués dans le tableau ci-dessus donnent toute information sur le
vote ayant abouti à l'approbation de cette section.

839-5-5 © IEC - 5 -
INTERNATIONAL ELECTROTECHNICAL COMMISSION
ALARM SYSTEMS
Part 5: Requirements for alarm transmission systems
Section 5: Requirements for digital communicator systems
using the public switched telephone network
FOREWORD
The formal decisions or agreements of the IEC on technical matters, prepared by Technical Committees on
1)
which all the National Committees having a special interest therein are represented, express, as nearly as
possible, an international consensus of opinion on the subjects dealt with.
2) They have the form of recommendations for international use and they are accepted by the National
Committees in that sense.
3) In order to promote international unification, the IEC expresses the wish that all National Committees
should adopt the text of the IEC recommendation for their national rules in so far as national conditions will
permit. Any divergence between the IEC recommendation and the corresponding national rules should, as
far as possible, be clearly indicated in the latter.
This section of the International Standard IEC 839-5 has been prepared by IEC Technical
Committee No. 79: Alarm systems.
The text of this section is based on the following documents:
Six Months' Rule Report on Voting Two Months' Procedure Report on Voting
79(CO)22 79(CO)33 79(CO)40 79(CO)50
Full information on the voting for the approval of this section can be found in the Voting
Reports indicated in the above table.

839-5-5 © CEI
- 6 -
SYSTÈMES D'ALARME
Partie 5: Prescriptions pour les systèmes de
transmission d'alarme
Section 5: Systèmes automatiques d'établissement de
communications numériques utilisant le réseau téléphonique
public commuté
1 Domaine d'application
La présente section de la CEI 839-5 spécifie les prescriptions pour les systèmes
automatiques d'établissement de communications numériques utilisant le réseau
téléphonique public commuté, qui sont à ajouter aux prescriptions spécifiées dans la
CEI 839-5-1 et la CEI 839-5-2.
Elle couvre les liaisons commutées assurant la liaison des signaux d'événements entre un
système d'alarme et un centre de surveillance à distance. L'information sera transmise, à
l'aide de signaux codés, à des récepteurs automatiques situés dans des centres de
surveillance à distance. On peut inclure un moyen d'établir un canal sonore.
Le centre de surveillance à distance sera normalement un centre de réception d'alarme,
mais ce peut être une station satellite équipée d'un système de retransmission utilisant un
système de transmission d'alarme satisfaisant aux prescriptions de la CEI 839-5-4 relative
aux systèmes de transmission d'alarme utilisant des voies de transmission d'alarme spé-
cialisées.
2 Références normatives
Les normes suivantes contiennent des dispositions qui, par suite de la référence qui y est
faite, constituent des dispositions valables pour la présente section de la CEI 839-5. Au
moment de la publication, les éditions indiquées étaient en vigueur. Toute norme est su-
jette à révision et les parties prenantes aux accords fondés sur la présente section de la
CEI 839-5 sont invitées à rechercher la possibilité d'appliquer l'édition la plus récente des
normes indiquées ci-après. Les membres de la CEI et de l'ISO possèdent le registre des
Normes internationales en vigueur.
CEI 839-5-1: 1991, Systèmes d'alarme - Partie 5: Prescriptions pour les systèmes de
transmission d'alarme - Section 1: Prescriptions générales pour les systèmes.
CEI 839-5-2: 1991, Systèmes d'alarme - Partie 5: Prescriptions pour les systèmes de
transmission d'alarme - Section 2: Prescriptions générales pour les matériels utilisés.

839-5-5 © IEC - 7 -
ALARM SYSTEMS
Part 5: Requirements for alarm transmission systems
Section 5: Requirements for digital communicator systems
using the public switched telephone network
1 Scope
This section of IEC 839-5 specifies the requirements for digital communicator systems
using the public switched telephone network which are additional to those specified in
IEC 839-5-1 and IEC 839-5-2.
It covers switched connections providing event driven signalling between an alarm system
and a remote centre. The information will be transmitted using encoded signals to automa-
tic receivers at remote centres. A facility may be included to provide an audio channel.
The remote centre will normally be an alarm receiving centre but may be a satellite station
with onward transmission using an alarm transmission system meeting the requirements of
IEC 839-5-4 for alarm transmission systems using dedicated alarm transmission paths.
2 Normative references
The following standards contain provisions which, through reference in this text, constitute
provisions of this section of IEC 839-5. At the time of publication, the editions indicated
were valid. All standards are subject to revision, and parties to agreements based on this
section of IEC 839-5 are encouraged to investigate the possibility of applying the most
recent editions of the standards indicated below. Members of IEC and ISO maintain regis-
ters of currently valid International Standards.
IEC 839-5-1: 1991,
Alarm systems - Part 5: Requirements for alarm transmission systems -
Section 1: General requirements for systems.
IEC 839-5-2: 1991,
Alarm systems - Part 5: Requirements for alarm transmission systems -
Section 2: General requirements for equipment.

- 8 - 839-5-5 © CEI
3 Définitions
3.1 système automatique d'établissement de communications numériques:
Système de transmission d'alarme qui transfère l'information par signaux codés
numériques sur une voie de transmission établie par numérotation automatique via le
réseau téléphonique public commuté.
4 Considérations générales
Dans un système automatique d'établissement de communications numériques, la voie de
transmissio
...

IEC 60811-509 ®
Edition 1.0 2012-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electric and optical fibre cables – Test methods for non-metallic materials –
Part 509: Mechanical tests – Test for resistance of insulations and sheaths to
cracking (heat shock test)
Câbles électriques et à fibres optiques – Méthodes d’essai pour les matériaux
non-métalliques –
Partie 509: Essais mécaniques – Essai de résistance à la fissuration des
enveloppes isolantes et des gaines (essai de choc thermique)

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IEC 60811-509 ®
Edition 1.0 2012-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electric and optical fibre cables – Test methods for non-metallic materials –

Part 509: Mechanical tests – Test for resistance of insulations and sheaths to

cracking (heat shock test)
Câbles électriques et à fibres optiques – Méthodes d’essai pour les matériaux

non-métalliques –
Partie 509: Essais mécaniques – Essai de résistance à la fissuration des

enveloppes isolantes et des gaines (essai de choc thermique)

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX L
ICS 29.035.01; 29.060.20 ISBN 978-2-88912-985-0

– 2 – 60811-509  IEC:2012
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Test method . 6
4.1 General . 6
4.2 Apparatus . 6
4.3 Sample and test piece preparation for insulations . 7
4.3.1 General . 7
4.3.2 Procedure . 7
4.3.3 Expression of results . 8
4.4 Sample and test piece preparation for sheaths . 8
4.4.1 General . 8
4.4.2 Procedure . 8
4.4.3 Measurements . 9
4.4.4 Expression of the results . 9
5 Test report. 9
Annex A (informative) Recommended performance requirement . 10
Bibliography . 11

Table 1 – Diameter of mandrel and number of turns for cores with overall diameter not
exceeding 12,5 mm . 7
Table 2 – Diameter of mandrel and number of turns for cores with overall diameter
exceeding 12,5 mm . 8

60811-509  IEC:2012 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRIC AND OPTICAL FIBRE CABLES –
TEST METHODS FOR NON-METALLIC MATERIALS –

Part 509: Mechanical tests –
Test for resistance of insulations
and sheaths to cracking (heat shock test)

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). 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. 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 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 IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
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4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
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between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
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 60811-509 has been prepared by IEC technical committee 20:
Electric cables.
This Part 509 of IEC 60811 cancels and replaces Clause 9 of IEC 60811-3-1:1985, which is
withdrawn. Full details of the replacements are shown in Annex A of IEC 60811-100:2012.
There are no specific technical changes with respect to the previous edition, but see the
Foreword to IEC 60811-100:2012.

– 4 – 60811-509  IEC:2012
The text of this standard is based on the following documents:
FDIS Report on voting
20/1305/FDIS 20/1354/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
This part of IEC 60811 shall be used in conjunction with IEC 60811-100.
A list of all the parts in the IEC 60811 series, published under the general title Electric and
optical fibre cables – Test methods for non-metallic materials, can be found on the IEC
website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
60811-509  IEC:2012 – 5 –
INTRODUCTION
The IEC 60811 series specifies the test methods to be used for testing non-metallic materials
of all types of cables. These test methods are intended to be referenced in standards for
cable construction and for cable materials.
NOTE 1 Non-metallic materials are typically used for insulating, sheathing, bedding, filling or taping within cables.
NOTE 2 These test methods are accepted as basic and fundamental and have been developed and used over
many years principally for the materials in all energy cables. They have also been widely accepted and used for
other cables, in particular optical fibre cables, communication and control cables and cables for ships and offshore
applications.
– 6 – 60811-509  IEC:20
...

IEC 60811-509 ®
Edition 1.1 2017-07
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electric and optical fibre cables – Test methods for non-metallic materials –
Part 509: Mechanical tests – Test for resistance of insulations and sheaths to
cracking (heat shock test)
Câbles électriques et à fibres optiques – Méthodes d’essai pour les matériaux
non-métalliques –
Partie 509: Essais mécaniques – Essai de résistance à la fissuration des
enveloppes isolantes et des gaines (essai de choc thermique)

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

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IEC 60811-509 ®
Edition 1.1 2017-07
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electric and optical fibre cables – Test methods for non-metallic materials –

Part 509: Mechanical tests – Test for resistance of insulations and sheaths to

cracking (heat shock test)
Câbles électriques et à fibres optiques – Méthodes d’essai pour les matériaux

non-métalliques –
Partie 509: Essais mécaniques – Essai de résistance à la fissuration des

enveloppes isolantes et des gaines (essai de choc thermique)

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.035.01; 29.060.20 ISBN 978-2-8322-4655-9

IEC 60811-509 ®
Edition 1.1 2017-07
CONSOLIDATED VERSION
REDLINE VERSION
VERSION REDLINE
colour
inside
Electric and optical fibre cables – Test methods for non-metallic materials –
Part 509: Mechanical tests – Test for resistance of insulations and sheaths to
cracking (heat shock test)
Câbles électriques et à fibres optiques – Méthodes d’essai pour les matériaux
non-métalliques –
Partie 509: Essais mécaniques – Essai de résistance à la fissuration des
enveloppes isolantes et des gaines (essai de choc thermique)

– 2 – IEC 60811-509:2012+AMD1:2017 CSV
 IEC 2017
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Test method . 6
4.1 General . 6
4.2 Apparatus . 6
4.3 Sample and test piece preparation for insulations . 7
4.3.1 General . 7
4.3.2 Procedure . 7
4.3.3 Expression of results . 8
4.4 Sample and test piece preparation for sheaths . 8
4.4.1 General . 8
4.4.2 Procedure . 9
4.4.3 Measurements . 9
4.4.4 Expression of the results . 9
5 Test report. 9
Annex A (informative) Recommended performance requirement . 10
Bibliography . 11

Table 1 – Diameter of mandrel and number of turns for cores with overall diameter not
exceeding 12,5 mm . 7
Table 2 – Diameter of mandrel and number of turns for cores with overall diameter
exceeding 12,5 mm . 8

 IEC 2017
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRIC AND OPTICAL FIBRE CABLES –
TEST METHODS FOR NON-METALLIC MATERIALS –
Part 509: Mechanical tests –
Test for resistance of insulations
and sheaths to cracking (heat shock test)
FOREWORD
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This consolidated version of the official IEC Standard and its amendment has been prepared
for user convenience.
IEC 60811-509 edition 1.1 contains the first edition (2012-03) [documents 20/1305/FDIS and
20/1354/RVD] and its amendment 1 (2017-07) [documents 20/1737/FDIS and 20/1744/RVD].
In this Redline version, a vertical line in the margin shows where the technical content is
modified by amendment 1. Additions are in green text, deletions are in strikethrough red text. A
separate Final versi
...