SIST EN 60754-2:2014
(Main)Test on gases evolved during combustion of materials from cables - Part 2: Determination of acidity (by pH measurement) and conductivity
Test on gases evolved during combustion of materials from cables - Part 2: Determination of acidity (by pH measurement) and conductivity
EN-IEC 60754-1 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.
Prüfung der bei der Verbrennung der Werkstoffe von Kabeln und isolierten Leitungen entstehenden Gase -- Teil 2: Bestimmung der Azidität (durch Messung des pH-Wertes) und Leitfähigkeit
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.
Elle a le statut d'une publication groupée de sécurité conformément au Guide CEI 104.
Ugotavljanje nastajanja plinov pri gorenju kabelskih materialov - 2. del: Ugotavljanje kislosti (z merjenjem pH) in prevodnosti (IEC 60754-2:2011)
Standard EN-IEC 60754-1 določa napravo in postopek za ugotavljanje morebitne eksplozivnosti plinov, nastalih pri gorenju materialov iz konstrukcij električnih ali optičnih kablov, z meritvijo stopnje kislosti (pH) in prevodnosti vodne raztopine, ki sta posledica plinov, nastalih med gorenjem. Splošna metoda, določena v tem standardu, je namenjena preskušanju posameznih komponent, ki se uporabljajo pri izdelavi kablov. Na voljo so formule za izračun ovrednotene vrednosti za kombinacijo materialov v določenem kablu. Uporaba te metode bo omogočila preverjanje ustreznih zahtev za individualne komponente ali združene komponente kabelske sestave, navedene v ustrezni kabelski specifikaciji. Poenostavljena metoda je vključena v preskušanje posameznih komponent, kjer je zahtevan le prikaz skladnosti z navedeno zahtevo glede zmogljivosti.
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Ugotavljanje nastajanja plinov pri gorenju kabelskih materialov - 2. del: Ugotavljanje kislosti (z merjenjem pH) in prevodnosti (IEC 60754-2:2011)Prüfung der bei der Verbrennung der Werkstoffe von Kabeln und isolierten Leitungen entstehenden Gase -- Teil 2: Bestimmung der Azidität (durch Messung des pH-Wertes) und LeitfähigkeitEssai 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)Test on gases evolved during combustion of materials from cables - Part 2: Determination of acidity (by pH measurement) and conductivity29.060.20KabliCables13.220.40Sposobnost vžiga in obnašanje materialov in proizvodov pri gorenjuIgnitability and burning behaviour of materials and productsICS:Ta slovenski standard je istoveten z:EN 60754-2:2014SIST EN 60754-2:2014en01-junij-2014SIST EN 60754-2:2014SLOVENSKI
STANDARDSIST EN 50267-2-2:1999SIST EN 50267-2-3:1999SIST EN 50267-1:1999SIST EN 50267-2-1:19991DGRPHãþD
SIST EN 60754-2:2014
EUROPEAN STANDARD EN 60754-2 NORME EUROPÉENNE
EUROPÄISCHE NORM April 2014
CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B - 1000 Brussels
© 2014 CENELEC -
All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60754-2:2014 E
ICS 13.220.40; 29.020; 29.060.20 Supersedes EN 50267-1:1998 (partially), EN 50267-2-1:1998 (partially), EN 50267-2-2:1998 (partially), EN 50267-2-3:1998 (partially)
English version
Test on gases evolved during combustion of materials from cables -
Part 2: Determination of acidity (by pH measurement) and conductivity (IEC 60754-2:2011)
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) (CEI 60754-2:2011)
Prüfung der bei der Verbrennung der Werkstoffe von Kabeln und isolierten Leitungen entstehenden Gase -
Teil 2: Bestimmung der Azidität (durch Messung des pH-Wertes) und Leitfähigkeit (IEC 60754-2:2011)
This European Standard was approved by CENELEC on 2014-01-27. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
SIST EN 60754-2:2014
EN 60754-2:2014 - 2 - Foreword This document (EN 60754-2:2014) consists of the text of IEC 60754-2:2011, prepared by IEC/TC 20 "Electric cables".
The following dates are fixed: • latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2015-01-27 • latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2017-01-27
This document supersedes EN 50267-1:1998 (PART), EN 50267-2-1:1998 (PART), EN 50267-2-2:1998 (PART), EN 50267-2-3:1998 (PART).
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent rights.
This standard covers the Principle Elements of the Safety Objectives for Electrical Equipment Designed for Use within Certain Voltage Limits (LVD - 2006/95/EC).
Endorsement notice The text of the International Standard IEC 60754-2:2011 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following note has to be added for the standard indicated :
IEC 60695-5-1 NOTE Harmonized as EN 60695-5-1. SIST EN 60754-2:2014
- 3 - EN 60754-2:2014 Annex ZA
(normative)
Normative references to international publications with their corresponding European publications
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. 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
ISO 1042 - Laboratory glassware - One-mark
volumetric flasks EN ISO 1042 -
ISO 3696 - Water for analytical laboratory use - Specification and test methods EN ISO 3696 -
SIST EN 60754-2:2014
SIST EN 60754-2:2014
IEC 60754-2 Edition 2.0 2011-11 INTERNATIONAL STANDARD NORME INTERNATIONALE 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 R ICS 13.220.40; 29.020; 29.060.20 PRICE CODE CODE PRIX ISBN 978-2-88912-716-0
GROUP SAFETY PUBLICATION PUBLICATION GROUPÉE DE SÉCURITÉ
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale ®
SIST EN 60754-2:2014
– 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 SIST EN 60754-2:2014
60754-2 © IEC:2011 – 3 –
Figure 5 – Test apparatus: method 3 – Use of ambient air sucked by means of a suction pump . 18
SIST EN 60754-2:2014
– 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 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 possible in their national and regional publications. Any divergence 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 60754-2 has been prepared by IEC technical committee 20: Electric cables. It has the status of a group safety publication in accordance with IEC Guide 104.
This second edition of IEC 60754-2 cancels and replaces the first edition, published in 1991, Amendment 1 (1997), and constitutes a technical revision. 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; SIST EN 60754-2:2014
60754-2 © IEC:2011 – 5 –
– 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. The text of this standard is based on the following documents: FDIS Report on voting 20/1265/FDIS 20/1275/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. A list of all the parts in the IEC 60754 series, published under the general title Test on gases evolved during combustion of materials from cables, 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.
SIST EN 60754-2:2014
– 6 – 60754-2 © IEC:2011 INTRODUCTION IEC 60754 consists of the following parts, under the general title Test on gases evolved during combustion of materials from cables: – Part 1: Determination of the halogen acid gas content – Part 2: Determination of acidity (by pH measurement) and conductivity. IEC 60754-2 was originally developed due to concerns expressed by cable users over the amount of acid gas evolved when some cable insulating, sheathing and other materials are burned, as such corrosive effluent can cause extensive damage to electrical and electronic equipment not involved in the fire itself. NOTE Guidance on the corrosivity of fire effluent is given in IEC 60695-5-1. This standard provides a method for determining the acidity (by pH measurement) and conductivity of an aqueous solution of gases evolved during the combustion of materials so that limits can be agreed for cable specifications. As the test is not carried out on a complete cable test piece, for a hazard assessment the actual material volumes of the cable components should be taken into consideration.
The method provides an indirect assessment of corrosivity. However, the recommended limits of pH and conductivity can only be regarded as an indication, as the relationship between corrosion and these two parameters does n
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