IEC 60754-2:2011

Test on gases evolved during combustion of materials from cables - Part 2: Determination of acidity (by pH measurement) and conductivity

IEC 60754-2:2011 specifies the apparatus and procedure for the determination of the potential corrosivity of gases evolved during the combustion of materials taken from electric or optical fibre cable constructions by measuring the acidity (pH) and conductivity of an aqueous solution resulting from the gases evolved during the combustion. The general method specified in this standard is intended for the testing of individual components used in a cable construction. Formulae are given for the calculation of a weighted value for a combination of materials found in a specified cable. The use of this method will enable the verification of relevant requirements for either individual components or combined components of a cable construction stated in the appropriate cable specification. A simplified method is included for the testing of individual components where it is required only to demonstrate compliance with a stated performance requirement for quality control purposes. The significant technical changes with respect to the previous edition are as follows:
- improved definition of safety requirements relating to capture of gases;
- introduction of guidance on the preparation of test specimens for more even combustion;
- better expression of tolerances and precision;
- clarification of the conductivity and acidity functions;
- improved definition of the heating procedure;
- greater precision in the definition of the test temperature for the determination of pH value and conductivity;
- correction of the formulae for the calculation of the test results.

Essai sur les gaz émis lors de la combustion des matériaux prélevés sur câbles ­ Partie 2: Détermination de la conductivité et de l'acidité (par mesure du pH)

La CEI 60754-2:2011 décrit l'appareillage et la procédure d'essai pour déterminer le potentiel de corrosivité des gaz émis pendant la combustion de matériaux prélevés sur un câble électrique ou un câble à fibre optique en mesurant l'acidité (pH) et la conductivité d'une solution aqueuse obtenue à partir des gaz dégagés pendant la combustion. La méthode générale décrite dans cette norme est destinée à l'analyse des composants individuels utilisés dans la construction d'un câble. Des formules de calcul sont données pour le calcul d'une valeur pondérée lors de la combinaison de matériaux pesés provenant d'un câble spécifié. L'emploi de cette méthode d'essai permettra de vérifier les exigences appropriées soit pour les composants individuels du câble, soit pour la combinaison des composants rentrant dans la construction du câble, exigences établies dans la spécification appropriée du câble. Une méthode simplifiée est incluse pour l'essai de composants individuels lorsqu'il est exigé seulement pour démontrer la conformité à une exigence de performance exigée dans le cadre de contrôle de qualité. Les modifications techniques importantes par rapport aux publications antérieures sont les suivantes:
- une amélioration de la définition des exigences de sécurité relatives au piégeage des gaz;
- introduction de recommandations pour la préparation des éprouvettes d'essai pour une meilleure combustion;
- une meilleure expression des tolérances et précisions;
- clarification des fonctions du ph et de la conductivité;
- amélioration du mode opératoire pour le chauffage;
- meilleure précision de la définition de la température d'essai pour la détermination du pH et de la conductivité;
- correction de la formule de calcul des résultats d'essais.

General Information

• Status: Published
• Publication Date: 16-Nov-2011
• ICS: 13.220.40 - Ignitability and burning behaviour of materials and products
• ICS: 29.020 - Electrical engineering in general
• ICS: 29.060.20 - Cables
• Technical Committee: TC 20 - Electric cables
• Drafting Committee: WG 18 - TC 20/WG 18
• Current Stage: PPUB - Publication issued
• Start Date: 31-Oct-2011
• Completion Date: 17-Nov-2011

Relations

• Amended By: IEC 60754-2:2011/AMD1:2019 - Amendment 1 - Test on gases evolved during combustion of materials from cables - Part 2: Determination of acidity (by pH measurement) and conductivity
• Effective Date: 05-Sep-2023
• Revises: IEC 60754-2:1991/AMD1:1997 - Amendment 1 - Test on gases evolved during combustion of electric cables - Part 2: Determination of degree of acidity of gases evolved during the combustion of materials taken from electric cables by measuring pH and conductivity
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60754-2 ®
Edition 2.0 2011-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
GROUP SAFETY PUBLICATION
PUBLICATION GROUPÉE DE SÉCURITÉ

Test on gases evolved during combustion of materials from cables –
Part 2: Determination of acidity (by pH measurement) and conductivity

Essai sur les gaz émis lors de la combustion des matériaux prélevés sur
câbles –
Partie 2: Détermination de la conductivité et de l‘acidité (par mesure du pH)

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
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IEC 60754-2 ®
Edition 2.0 2011-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
GROUP SAFETY PUBLICATION
PUBLICATION GROUPÉE DE SÉCURITÉ

Test on gases evolved during combustion of materials from cables –
Part 2: Determination of acidity (by pH measurement) and conductivity

Essai sur les gaz émis lors de la combustion des matériaux prélevés sur
câbles –
Partie 2: Détermination de la conductivité et de l‘acidité (par mesure du pH)

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX R
ICS 13.220.40; 29.020; 29.060.20 ISBN 978-2-88912-716-0

– 2 – 60754-2 © IEC:2011
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Test method principle . 8
5 Test apparatus . 8
5.1 General . 8
5.2 Tube furnace . 8
5.3 Quartz glass tube . 8
5.4 Combustion boats . 8
5.5 Bubbling devices for gases . 9
5.6 Air supply system . 9
5.7 Analytical balance . 10
5.8 Laboratory glassware . 10
5.9 pH meter . 10
5.10 Conductivity measuring device . 10
6 Test specimen . 10
6.1 General . 10
6.2 Conditioning of specimen . 10
6.3 Mass of specimen . 10
7 Test procedure . 11
7.1 General . 11
7.2 Test apparatus and arrangement . 11
7.3 Heating procedure . 11
7.4 Washing procedure . 11
7.5 Determination of the pH value and conductivity . 11
8 Evaluation of the test results . 12
8.1 General method . 12
8.2 Simplified method . 12
8.3 Weighted values . 12
8.3.1 Value of pH . 12
8.3.2 Conductivity. 13
9 Performance requirement . 13
10 Test report. 13
Annex A (informative) Recommended performance requirements . 19
Bibliography . 20

Figure 1 – Device for inserting combustion boat and test specimen . 14
Figure 2 – Example of a gas washing bottle . 15
Figure 3 – Test apparatus: method 1 – Use of synthetic or compressed air from a
bottle . 16
Figure 4 – Test apparatus: method 2 – Use of laboratory compressed air supply . 17

60754-2 © IEC:2011 – 3 –
Figure 5 – Test apparatus: method 3 – Use of ambient air sucked by means of a
suction pump . 18

– 4 – 60754-2 © IEC:2011
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
TEST ON GASES EVOLVED DURING
COMBUSTION OF MATERIALS FROM CABLES –

Part 2: Determination of acidity
(by pH measurement) and conductivity

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
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International Standard IEC 60754-2 has been prepared by
...

IEC 60754-2 ®
Edition 2.1 2019-11
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
GROUP SAFETY PUBLICATION
PUBLICATION GROUPÉE DE SÉCURITÉ

Test on gases evolved during combustion of materials from cables –
Part 2: Determination of acidity (by pH measurement) and conductivity

Essai sur les gaz émis lors de la combustion des matériaux prélevés
sur câbles –
Partie 2: Détermination de la conductivité et de l‘acidité (par mesure du pH)

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.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
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et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
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Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform Electropedia - www.electropedia.org
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IEC 60754-2 ®
Edition 2.1 2019-11
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
GROUP SAFETY PUBLICATION
PUBLICATION GROUPÉE DE SÉCURITÉ

Test on gases evolved during combustion of materials from cables –

Part 2: Determination of acidity (by pH measurement) and conductivity

Essai sur les gaz émis lors de la combustion des matériaux prélevés

sur câbles –
Partie 2: Détermination de la conductivité et de l‘acidité (par mesure du pH)

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 13.220.40; 29.020; 29.060.20 ISBN 978-2-8322-7659-4

IEC 60754-2 ®
Edition 2.1 2019-11
CONSOLIDATED VERSION
REDLINE VERSION
VERSION REDLINE
colour
inside
GROUP SAFETY PUBLICATION
PUBLICATION GROUPÉE DE SÉCURITÉ

Test on gases evolved during combustion of materials from cables –
Part 2: Determination of acidity (by pH measurement) and conductivity

Essai sur les gaz émis lors de la combustion des matériaux prélevés
sur câbles –
Partie 2: Détermination de la conductivité et de l‘acidité (par mesure du pH)

– 2 – IEC 60754-2:2011+AMD1:2019 CSV
© IEC 2019
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Test method principle . 8
5 Test apparatus . 8
5.1 General . 8
5.2 Tube furnace . 8
5.3 Quartz glass tube . 8
5.4 Combustion boats . 8
5.5 Bubbling devices for gases . 9
5.6 Air supply system . 9
5.7 Analytical balance . 10
5.8 Laboratory glassware . 10
5.9 pH meter . 10
5.10 Conductivity measuring device . 10
6 Test specimen . 11
6.1 General . 11
6.2 Conditioning of specimen . 11
6.3 Mass of specimen . 11
7 Test procedure . 11
7.1 General . 11
7.2 Test apparatus and arrangement . 11
7.3 Heating procedure . 11
7.4 Washing procedure . 12
7.5 Determination of the pH value and conductivity . 12
8 Evaluation of the test results . 12
8.1 General method . 12
8.2 Simplified method . 13
8.3 Weighted values . 13
8.3.1 General . 13
8.3.2 Value of pH . 13
8.3.3 Conductivity. 13
9 Performance requirement . 13
10 Test report. 13
Annex A (informative) Recommended performance requirements . 23
Bibliography . 24

Figure 1 – Device for inserting combustion boat and test specimen . 15
Figure 2 – Example of a gas washing bottle . 16
Figure 3 – Test apparatus: method 1 – Use of synthetic or compressed air

from a bottle . 18
Figure 4 – Test apparatus: method 2 – Use of laboratory compressed air supply . 20

© IEC 2019
Figure 5 – Test apparatus: method 3 – Use of ambient air sucked by means
of a suction pump . 22

– 4 – IEC 60754-2:2011+AMD1:2019 CSV
© IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
TEST ON GASES EVOLVED DURING
COMBUSTION OF MATERIALS FROM CABLES –
Part 2: Determination of acidity
(by pH measurement) and conductivity
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
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possi
...