EN 61482-1-2:2007

Live working - Protective clothing against the thermal hazards of an electric arc - Part 1-2: Test methods - Method 2: Determination of arc protection class of material and clothing by using a constrained and directed arc (box test)

This part of IEC 61482 specifies methods to test material and garments intended for use in heat- and flame-resistant clothing for workers exposed to electric arcs. In contrast to the test methods in IEC 61482-1-1 a directed and constrained electric arc in a low voltage circuit is used to classify material and clothing in defined arc protection classes. The test methods specified in this document are aimed at rendering a decision whether arc thermal protection is met under defined conditions. Two protection classes are tested. Protection class 1 and protection class 2 are safety requirements covering actual risk potentials due to electric fault arcs. The test methods are not directed toward measuring the arc thermal performance value (ATPV). Methods determining the ATPV are prescribed in IEC 61482-1-1. This standard specifies tests with which it is possible to evaluate materials and protective clothing based on the use of a directed and constrained electric arc under defined laboratory conditions (box-test). A practical scenario concerning test set-up and test conditions, electrical and constructional parameters is selected. For the tests a low voltage procedure is used. The tests can optionally be carried out in two fixed test classes, selected by the amount of prospective short circuit current: Class 1: 4 kA; Class 2: 7 kA. The defined duration of the electric arc is 500 ms in both test classes. Materials and clothing will be tested with two methods: the material box test method and the garment box test method. The material box test method is used to measure and find material response to an arc exposure when tested in a flat configuration. A quantitative measurement of the arc thermal performance is made by means of the energy transmitted through the material. The garment box test method is used to test the function of the protective clothing after an arc exposure, including all the garment findings, sewing tread, fastenings and other accessories; no heat flux will be measured. Testing refers to the thermal arc effects; it does not apply to other effects like noise, light emissions, pressure rise, hot oil, electric shock, the consequences of physical and mental shock or toxic influences.

Arbeiten unter Spannung - Schutzkleidung gegen die thermischen Gefahren eines elektrischen Lichtbogens - Teil 1-2: Prüfverfahren - Verfahren 2: Bestimmung der Lichtbogen-Schutzklasse des Materials und der Kleidung unter Verwendung eines gerichteten Prüflichtbogens (Box-Test)

Travaux sous tension - Vêtements de protection contre les dangers thermiques d'un arc électrique - Partie 1-2: Méthodes d'essai - Méthode 2: Détermination de la classe de protection contre l'arc de matériaux et de vêtements au moyen d'un arc dirigé et contraint (enceinte d'essai)

La présente partie de la CEI 61482 spécifie des méthodes d'essai des matériaux et des articles d'habillement destinés à être utilisés pour les vêtements résistant à la chaleur et à la flamme, pour les travailleurs exposés aux arcs électriques. Par opposition aux méthodes d'essai de la CEI 61482-1-1, un arc électrique dirigé et contraint dans un circuit basse tension est utilisé pour classer les matériaux et les vêtements dans les classes de protection contre l'arc définies. Les méthodes d'essai spécifiées dans le présent document ont pour objectif de statuer si la protection thermique contre l'arc est satisfaite dans des conditions définies. Deux classes de protection sont soumises aux essais. La classe de protection 1 et la classe de protection 2 sont des exigences de sécurité traitant des risques potentiels réels dus aux arcs électriques sur défaut. Les méthodes d'essai ne sont pas destinées à mesurer la valeur de performance thermique de l'arc (ATPV; en anglais Arc Thermal Performance Value). Les méthodes déterminant la valeur de performance thermique de l'arc sont prescrites dans la CEI 61482-1-1. La présente norme spécifie des essais avec lesquels il est possible d'évaluer les matériaux et les vêtements de protection en se basant sur l'utilisation d'un arc électrique dirigé et contraint dans des conditions de laboratoire définies (enceinte d'essai). Un scénario pratique est choisi, concernant le montage d'essai et les conditions d'essai, ainsi que les paramètres électriques et de construction. Pour les essais, une procédure basse tension est utilisée. Les essais peuvent être effectués au choix selon deux classes d'essai fixes, choisies par la quantité de courant de court-circuit présumé: Classe 1: 4 kA; Classe 2: 7 kA. La durée de l'arc est définie à 500 ms dans les deux classes d'essais. Les matériaux et les vêtements seront soumis aux essais selon deux méthodes: la méthode de l'enceinte d'essai pour les matériaux et la méthode de l'enceinte d'essai pour les articles d'habillement. La méthode de l'enceinte d'essai pour les matériaux est utilisée pour mesurer et trouver une réponse des matériaux à une exposition à l'arc lors de l'essai en une configuration plane. Une mesure quantitative de la performance thermique à l'arc est effectuée au moyen de l'énergie transmise à travers le matériau. La méthode de l'enceinte d'essai pour les articles d'habillement est utilisée pour soumettre aux essais la fonction du vêtement de protection après une exposition à l'arc, y compris toutes les fournitures de confection, le fil de couture, les fermetures et les autres accessoires; aucun flux thermique ne sera mesuré. Les essais se rapportent aux effets thermiques de l'arc; ils ne s'appliquent pas aux autres effets tels que le bruit, les émissions de lumière, la montée de pression, l'huile chaude, les chocs électriques, les conséquences des chocs physiques et mentaux ou les influences toxiques.

Delo pod napetostjo - Zaščitna oblačila proti temperaturnim nevarnostim električnega obloka - 2-1.del: Preskusne metode - 2. metoda: Določanje zaščitnega razreda proti obloku za material in oblačila z uporabo omejenega in usmerjenega obloka (preskus v zaboju) (IEC 61482-1-2:2007)

General Information

• Status: Withdrawn
• Publication Date: 29-Mar-2007
• Withdrawal Date: 28-Feb-2010
• ICS: 13.220.40 - Ignitability and burning behaviour of materials and products
• ICS: 29.260 - Electrical equipment for working in special conditions
• ICS: 29.260.99 - Other electrical equipment for working in special conditions
• Technical Committee: CLC/TC 78 - Equipment and tools for live working
• Drafting Committee: IEC/TC 78 - IEC_TC_78
• Parallel Committee: IEC/TC 78 - IEC_TC_78
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 13-Nov-2017
• Completion Date: 13-Nov-2017
• Ref Project: SIST EN 61482-1-2:2007 - Live working - Protective clothing against the thermal hazards of an electric arc -- Part 1-2: Test methods -- Method 2: Determination of arc protection class of material and clothing by using a constrained and directed arc (box test)

Relations

• Replaces: CLC/TS 50354:2003 - Electrical arc test methods for material and garments, for use by workers at risk from exposure to an electrical arc
• Effective Date: 29-Jan-2023
• Replaced By: EN 61482-1-2:2014 - Live working - Protective clothing against the thermal hazards of an electric arc - Part 1-2: Test methods - Method 2: Determination of arc protection class of material and clothing by using a constrained and directed arc (box test)
• Effective Date: 28-Jan-2023

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Live working - Protective clothing against the thermal hazards of an electric arc - Part 1-2: Test methods -- Method 2: Determination of arc protection class of material and clothing by using a constrained and directed arc (box test)QRVWLPTravaux sous tension - Vetements de protection contre les dangers thermiques d'un arc électrique - Partie 1-2: Méthodes d'essai - Méthode 2: Détermination de la classe de protection contre l'arc de matériaux et de vetements au moyen d'un arc dirigé et contraint (enceinte d'essai)Arbeiten unter Spannung - Schutzkleidung gegen die thermischen Gefahren eines elektrischen Lichtbogens - Teil 1-2: Prüfverfahren - Verfahren 2: Bestimmung der Lichtbogen-Schutzklasse des Materials und der Kleidung unter Verwendung eines gerichteten Prüflichtbogens (Box-Test)Ta slovenski standard je istoveten z:EN 61482-1-2:2007SIST EN 61482-1-2:2007en,fr,de13.340.10Varovalna oblekaProtective clothing13.260XGDURPProtection against electric shockICS:SIST-TS CLC/TS 50354:20071DGRPHãþDSLOVENSKI
STANDARDSIST EN 61482-1-2:200701-november-2007

EUROPEAN STANDARD EN 61482-1-2 NORME EUROPÉENNE
EUROPÄISCHE NORM March 2007
CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2007 CENELEC -
All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61482-1-2:2007 E
ICS 13.220.40; 29.260; 29.260.99 Supersedes CLC/TS 50354:2003
English version
Live working -
Protective clothing against the thermal hazards of an electric arc -
Part 1-2: Test methods -
Method 2: Determination of arc protection class of material and clothing by using a constrained and directed arc (box test) (IEC 61482-1-2:2007)
Travaux sous tension -
Vêtements de protection contre les dangers thermiques d'un arc électrique - Partie 1-2: Méthodes d'essai -
Méthode 2: Détermination de la classe
de protection contre l'arc de matériaux et de vêtements au moyen d'un arc dirigé et contraint (enceinte d'essai) (CEI 61482-1-2:2007)
Arbeiten unter Spannung -
Schutzkleidung gegen die thermischen Gefahren eines elektrischen Lichtbogens -Teil 1-2: Prüfverfahren -
Verfahren 2: Bestimmung der
Lichtbogen-Schutzklasse des Materials und der Kleidung unter Verwendung eines gerichteten Prüflichtbogens (Box-Test) (IEC 61482-1-2:2007)
This European Standard was approved by CENELEC on 2007-03-01. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.

- 2 -
Foreword The text of document 78/657/CDV, future edition 1 of IEC 61482-1-2, prepared by IEC TC 78, Live working, was submitted to the IEC-CENELEC parallel Unique Acceptance Procedure and was approved by CENELEC as EN 61482-1-2 on 2007-03-01. This European Standard supersedes CLC/TS 50354:2003. The following dates were fixed: – latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement
(dop)
2007-12-01 – latest date by which the national standards conflicting
with the EN have to be withdrawn
(dow)
2010-03-01 Annex ZA has been added by CENELEC. __________ Endorsement notice The text of the International Standard IEC 61482-1-2:2007 was approved by CENELEC as a European Standard without any modification. __________

- 3 - EN 61482-1-2:2007 Annex ZA
(normative)
Normative references to international publications with their corresponding European publications
The following referenced documents are indispensable for the application 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
When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies.
Publication Year Title EN/HD Year
IEC 60584-1 -1) Thermocouples -
Part 1: Reference tables EN 60584-1 19952)
ISO 3175-2 -1) Textiles - Professional care, drycleaning and wetcleaning of fabrics and garments -
Part 2: Procedure for testing performance when cleaning and finishing using tetrachloroethene EN ISO 3175-2 19982)
ISO 6330 -1) Textiles - Domestic washing and drying procedures for textile testing EN ISO 6330 20002)
ISO 9151 -1) Protective clothing against heat and flame - Determination of heat transmission on exposure to flame - -
1) Undated reference. 2) Valid edition at date of issue.

NORME INTERNATIONALECEIIEC INTERNATIONAL STANDARD 61482-1-2Première éditionFirst edition2007-01 Travaux sous tension –
Vêtements de protection contre les dangers thermiques d'un arc électrique
– Partie 1-2: Méthodes d'essai – Méthode 2: Détermination
de la classe de protection contre l’arc
de matériaux et de vêtements au moyen
d’un arc dirigé et contraint (enceinte d’essai)
Live working –
Protective clothing against the thermal hazards
of an electric arc –
Part 1-2: Test methods – Method 2: Determination
of arc protection class of material and clothing
by using a constrained and directed arc (box test) Pour prix, voir catalogue en vigueur For price, see current catalogue© IEC 2007
Droits de reproduction réservés
⎯
Copyright - all rights reserved Aucune partie de cette publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie et les microfilms, sans l'accord écrit de l'éditeur. 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 the publisher. International Electrotechnical Commission,
3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, SwitzerlandTelephone: [phone] Telefax: [phone] E-mail: [e-mail]
Web: www.iec.ch CODE PRIX PRICE CODE U Commission Electrotechnique InternationaleInternational Electrotechnical Commission

61482-1-2 © IEC:2007 – 3 – CONTENTS FOREWORD.7
1 Scope.11 2 Normative references.13 3 Terms, definitions and symbols.13 4 Principle of the test methods.23 4.1 Material box test method.23 4.2 Garment box test method.23 5 Significance and use of the test methods.23 6 Test apparatus.25 6.1 Test box for both methods.25 6.2 Material box test method.29 6.3 Garment box test method.33 6.4 Electric supply and electrodes.33 6.5 Electric arc characteristics.35 6.6 Measurement and data acquisition system.35 7 Precautions.37 8 Specimen preparation.37 8.1 Description of the test specimens.37 8.2 Laundry conditioning of test specimens.39 8.3 Pre-conditioning of the test specimens.39 9 Calibration.39 9.1 Data acquisition system pre-calibration.39 9.2 Calorimeter calibration check.39 9.3 Arc exposure calibration.39 9.4 Calibration of the electric test circuit and testing.41 9.5 Confirmation of test apparatus setting.41 9.6 Preparing and conditioning of the box.41 10 Apparatus care and maintenance.43 10.1 Surface reconditioning of the sensors.43 10.2 Care of test plate and mannequin.43 10.3 Care of electrodes.43 11 Test procedures.43 11.1 Test parameters.43 11.2 Number of tests.45 11.3 Test conditions and initial temperature.45 11.4 Specimen mounting.45 11.5 Specimen description.45 12 Interpretation of results.47 12.1 Heat transfer.47 12.2 Visual inspection.49 12.3 Test result.51 13 Test report.51
Bibliography.55

61482-1-2 © IEC:2007 – 5 –
Figure 1 – Test box .27 Figure 2 – Test set up .29 Figure 3 – Test plate with sensors (calorimeter in mounting board) .31
Table 1 – Statistically confirmed mean values of the direct exposure incident energy.41 Table 2 – Ranges of the permissible arc energy.41 Table 3 – Test parameters for Classes 1 and 2.43 Table 4 – Human tissue tolerance to heat, second degree burn.49 Table 5 – Acceptance criteria for tests on materials.51 Table 6 – Acceptance criteria for tests on garments.51

61482-1-2 © IEC:2007 – 7 – INTERNATIONAL ELECTROTECHNICAL COMMISSION ____________
LIVE WORKING – PROTECTIVE CLOTHING
AGAINST THE THERMAL HAZARDS OF AN ELECTRIC ARC –
Part 1-2: Test methods –
Method 2: Determination of arc protection class of material
and clothing by using a constrained and directed arc (box 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)
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