SIST EN 61482-1-1:2009
Live working - Protective clothing against the thermal hazards of an electric arc -- Part 1-1: Test methods - Method 1 - Determination of the arc rating (ATPV or EBT50) of flame resistant materials for clothing
Live working - Protective clothing against the thermal hazards of an electric arc -- Part 1-1: Test methods - Method 1 - Determination of the arc rating (ATPV or EBT50) of flame resistant materials for clothing
This part of IEC 61482 specifies test methods to measure the arc thermal performance value of materials intended for use in heat- and flame-resistant clothing for workers exposed to the thermal effects of electric arcs and the function of garments using these materials. These test methods measure the arc thermal performance value of materials which meet the following requirements: less than 100 mm char length and less than 2 s afterflame after removal from flame, when tested in accordance with ISO 15025, procedure B (bottom-edge ignition) on the outer material, and the char length measured using a modified ISO method as described in Annex A. These methods are used to measure and describe the properties of materials, products, assemblies or garments, in response to convective and radiant energy generated by an electric arc in open air under controlled laboratory conditions. The materials used in these methods are in the form of flat specimens for method A and garments for method B. Method A is used to determine the arc rating of materials and material assemblies when tested in a flat configuration. Method B is used to measure garment response, not arc rating, to an arc exposure including all the garment findings, sewing thread, fastenings, fabrics and other accessories when tested on a male mannequin torso. Method B is also used for accident replication. It is the responsibility of the user of this part of IEC 61482 to establish appropriate safety and health practices prior to use. For specific precautions, see Clause 7.
Arbeiten unter Spannung - Schutzkleidung gegen die thermischen Gefahren eines Lichtbogens – Teil 1-1: Prüfverfahren – Verfahren 1 - Bestimmung der Lichtbogenkennwerte (ATPV oder EBT50) von nicht entflammbaren Bekleidungsstoffen
Travaux sous tension - Vêtements de protection contre les dangers thermiques d’un arc électrique -- Partie 1-1: Méthodes d'essai - Méthode 1 - Détermination de la caractéristique d'arc (ATPV ou EBT50) de matériaux résistant à la flamme pour vêtement
La CEI 61482-1-1:2009 spécifie les méthodes d'essai pour mesurer la valeur de performance thermique d'arc des matériaux destinés à être utilisés pour les vêtements résistant à la chaleur et à la flamme, pour les travailleurs exposés aux arcs électriques, ainsi que le rôle des vêtements utilisant ces matériaux. Ces méthodes d'essai mesurent la valeur de performance thermique d'arc des matériaux qui répondent aux exigences suivantes: longueur de carbonisation inférieure à 100 mm et durée de combustion inférieure à 2 s après le retrait de la flamme lors de l'essai du matériel de dessus, selon la méthode B (allumage par le bord inférieur) de l'ISO 15025, et la longueur de carbonisation mesurée selon une méthode ISO modifiée décrite à l'Annexe A. Ces méthodes sont utilisées pour mesurer et décrire les propriétés des matériaux, des produits et des assemblages ou des articles d'habillement, en réponse à l'énergie de convection et à l'énergie rayonnante générées par un arc électrique à l'air libre dans des conditions contrôlées de laboratoire. Les matériaux utilisés dans ces méthodes ont la forme d'éprouvettes plates pour la méthode A et d'articles d'habillement pour la méthode B. La méthode A est utilisée pour déterminer la caractéristique d'arc de matériaux et d'assemblages de matériaux lors de l'essai en une configuration plane. La méthode B est utilisée pour mesurer une réponse d'un article d'habillement, et non la caractéristique d'arc, à une exposition à l'arc, y compris toutes les fournitures de confection, le fil de couture, les fermetures, les tissus et les autres accessoires lors d'un essai sur un torse de mannequin mâle. La méthode B est aussi utilisée à des fins de reconstitution d'un accident.
Delo pod napetostjo - Oblačila za zaščito pred temperaturno nevarnostjo električnega obloka - 1-1. del: Preskusne metode - 1. metoda: Določanje zaščitnega razreda pri obloku (ATPV ali EBT50) ognjevarnih materialov za oblačila (IEC 61482-1-1:2009)
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.QRVWMRRþDQMHArbeiten unter Spannung - Schutzkleidung gegen die thermischen Gefahren eines Lichtbogens – Teil 1-1: Prüfverfahren – Verfahren 1 - Bestimmung der Lichtbogenkennwerte (ATPV oder EBT50) von nicht entflammbaren BekleidungsstoffenTravaux sous tension - Vêtements de protection contre les dangers thermiques d’un arc électrique -- Partie 1-1: Méthodes d'essai - Méthode 1 - Détermination de la caractéristique d'arc (ATPV ou EBT50) de matériaux résistant à la flamme pour vêtementLive working - Protective clothing against the thermal hazards of an electric arc -- Part 1-1: Test methods - Method 1 - Determination of the arc rating (ATPV or EBT50) of flame resistant materials for clothing13.340.10Varovalna oblekaProtective clothing13.260Protection against electric shock. Live workingICS:Ta slovenski standard je istoveten z:EN 61482-1-1:2009SIST EN 61482-1-1:2009en,fr01-oktober-2009SIST EN 61482-1-1:2009SLOVENSKI
STANDARDSIST-TS CLC/TS 61482-1:20041DGRPHãþD
SIST EN 61482-1-1:2009
EUROPEAN STANDARD EN 61482-1-1 NORME EUROPÉENNE
EUROPÄISCHE NORM July 2009
CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: Avenue Marnix 17, B - 1000 Brussels
© 2009 CENELEC -
All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61482-1-1:2009 E
ICS 13.220.40; 29.260 Supersedes CLC/TS 61482-1:2003
English version
Live working -
Protective clothing against the thermal hazards of an electric arc -
Part 1-1: Test methods -
Method 1: Determination of the arc rating (ATPV or EBT50)
of flame resistant materials for clothing (IEC 61482-1-1:2009)
Travaux sous tension -
Vêtements de protection contre les dangers thermiques d’un arc électrique - Partie 1-1: Méthodes d'essai -
Méthode 1: Détermination
de la caractéristique d'arc
(ATPV ou EBT50) de matériaux
résistant à la flamme pour vêtements (CEI 61482-1-1:2009)
Arbeiten unter Spannung -
Schutzkleidung gegen thermische Gefahren eines Lichtbogens -
Teil 1-1: Prüfverfahren -
Verfahren 1: Bestimmung
der Lichtbogenkennwerte
(ATPV oder EBT50) von schwer entflammbaren Bekleidungsstoffen (IEC 61482-1-1:2009)
This European Standard was approved by CENELEC on 2009-06-01. 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. SIST EN 61482-1-1:2009
EN 61482-1-1:2009 - 2 -
Foreword The text of document 78/793/FDIS, future edition 1 of IEC 61482-1-1, prepared by IEC TC 78, Live working, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61482-1-1 on 2009-06-01. This European Standard supersedes CLC/TS 61482-1:2003. EN 61482-1-1:2009 includes the following significant technical change with respect to CLC/TS 61482-1:2003: –
addition of a detailed analysis of the sensor response. 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)
2010-03-01 – latest date by which the national standards conflicting
with the EN have to be withdrawn
(dow)
2012-06-01 Annex ZA has been added by CENELEC. __________ Endorsement notice The text of the International Standard IEC 61482-1-1:2009 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following notes have to be added for the standards indicated: IEC 61482-1-2 NOTE
Harmonized as EN 61482-1-2:2007 (not modified). ISO 5077 NOTE
Harmonized as EN ISO 5077:2008 (not modified). __________
SIST EN 61482-1-1:2009
- 3 - EN 61482-1-1:2009 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
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 - -
ISO 15025 2000 Protective clothing - Protection against heat and flame - Method of test for limited flame spread EN ISO 15025 2002
1) Undated reference. 2) Valid edition at date of issue. SIST EN 61482-1-1:2009
SIST EN 61482-1-1:2009
IEC 61482-1-1Edition 1.0 2009-05INTERNATIONAL STANDARD NORME INTERNATIONALELive working – Protective clothing against the thermal hazards of an electric
arc –
Part 1-1: Test methods – Method 1: Determination of the arc rating (ATPV or EBT50) of flame resistant materials for clothing
Travaux sous tension – Vêtements de protection contre les dangers thermiques d’un arc électrique – Partie 1-1: Méthodes d’essai – Méthode 1: Détermination de la caractéristique d’arc (ATPV ou EBT50) de matériaux résistant à la flamme pour vêtements
INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE XICS 13.220.40; 29.260 PRICE CODECODE PRIXISBN 2-8318-1042-3
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale ® SIST EN 61482-1-1:2009
– 2 – 61482-1-1 © IEC:2009 CONTENTS FOREWORD.4 1 Scope.6 2 Normative references.6 3 Terms, definitions and symbols.7 3.1 Terms and definitions.7 3.2 Symbols and units.11 4 Principle of the test methods.11 4.1 Test method A.11 4.2 Test method B.12 5 Significance and use of the test methods.12 6 Test apparatus.12 6.1 General.12 6.2 Method A – Arrangement of the two-sensor panels.13 6.3 Method A – Panel construction.14 6.4 Method B – Arrangement of the mannequins.15 6.5 Method B – Mannequin construction.17 6.6 Sensor response.18 6.7 Calorimeter construction.18 6.8 Supply bus and electrodes.20 6.8.1 General.20 6.8.2 Electrodes.21 6.8.3 Fuse wire.22 6.9 Electric supply.22 6.10 Test-circuit control.22 6.11 Data acquisition system.22 7 Precautions.22 8 Specimen preparation.23 8.1 Test specimens.23 8.1.1 Test specimens for method A: two-sensor panel test.23 8.1.2 Test specimens for method B: four-sensor mannequin.23 8.2 Laundry conditioning of test specimens.23 9 Calibration.23 9.1 Data acquisition system precalibration.23 9.2 Calorimeter calibration check.23 9.3 Arc exposure and apparatus calibration for the two-sensor panels and the monitoring sensors.24 9.3.1 Test apparatus.24 9.3.2 Positioning of the two-sensor panels, mannequins and monitoring sensors.24 9.3.3 Apparatus calibration for the two-sensor panels and monitoring sensors.24 9.4 Confirmation of test apparatus setting.24 10 Test apparatus care and maintenance.25 10.1 Surface reconditioning.25 10.2 Care of sensor panels and mannequins.25 10.3 Care of electrodes.25 SIST EN 61482-1-1:2009
61482-1-1 © IEC:2009 – 3 – 11 Test procedures.25 11.1 Test parameters.25 11.2 Sequence of tests.25 11.2.1 Panels.25 11.2.2 Mannequins.25 11.2.3 Test criteria.25 11.3 Initial temperature.26 11.4 Specimen mounting.26 11.4.1 Method A panels.26 11.4.2 Method B mannequins.27 11.5 Specimen characteristics.27 11.6 Test protocol.28 12 Interpretation of results.28 12.1 Heat transfer.28 12.1.1 Determining time zero.28 12.1.2 Plotting sensor response.28 12.1.3 Sensor response versus Stoll curve.30 12.1.4 Determination of heat attenuation factor (HAF).32 12.2 Determination of breakopen threshold energy, EBT50.33 12.3 Arc rating.33 12.4 Visual inspection.33 13 Test report.34 Annex A (normative)
Measurement of char length.36 Annex B (informative)
Logistic regression technique.37 Annex C (informative)
Heat attenuation factor.39 Bibliography.40
Figure 1 – Method A – Arrangement of three two-sensor panels with monitoring sensors (plan view).13 Figure 2 – Method A – Two-sensor panel (face view) with monitoring sensors.14 Figure 3 – Method A – Sliding two-sensor panel.15 Figure 4 – Supply bus and arc electrodes showing the position of mannequin(s) and monitoring sensors.16 Figure 5 – Positioning of electrodes and monitoring sensors.17 Figure 6 – Four-sensor mannequin, front view.18 Figure 7 – Calorimeter and thermocouple details.19 Figure 8 – Typical installation of the copper sensor mounted in the panel and the calorimeter mounted in the monitoring sensor.20 Figure 9 – Example of supply bus and arc electrodes for panels.21 Figure 10 – Typical material clamping assembly.27 Figure 11 – Typical sensor temperature-rise curve with time scale and baseline correction.29
Table 1 – Human tissue tolerance to heat, second-degree burn [1].31 Table A.1 – Total tearing load.36 SIST EN 61482-1-1:2009
– 4 – 61482-1-1 © IEC:2009 INTERNATIONAL ELECTROTECHNICAL COMMISSION ____________
LIVE WORKING –
PROTECTIVE CLOTHING AGAINST THE THERMAL
HAZARDS OF AN ELECTRIC ARC –
Part 1-1: Test methods –
Method 1: Determination of the arc rating
(ATPV or EBT50) of flame resistant materials for clothing
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 provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication. 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 61482-1-1 has been prepared by IEC technical committee 78: Live working. This standard cancels and replaces IEC 61482-1:2002. It constitutes a technical revision. This edition includes the following significant technical changes with respect to IEC 61482-1:
– addition of a detailed analysis of the sensor response. SIST EN 61482-1-1:2009
61482-1-1 © IEC:2009 – 5 – The text of this standard is based on the following documents: FDIS Report on voting 78/793/FDIS 78/805/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 parts of the IEC 61482 series can be found, under the general title Live working – Protective clothing against the thermal hazards of an electric arc, on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the maintenance result 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 61482-1-1:2009
– 6 – 61482-1-1 © IEC:2009 LIVE WORKING –
PROTECTIVE CLOTHING AGAINST THE THERMAL
HAZARDS OF AN ELECTRIC ARC –
Part 1-1: Test methods –
Method 1: Determination of the arc rating
(ATPV or EBT50) of flame resistant materials for clothing
1 Scope This part of IEC 61482 specifies test methods to measure the arc thermal performance value of materials intended for use in heat- and flame-resistant clothing for workers exposed to the thermal effects of electric arcs and the function of garments using these materials. These test methods measure the arc thermal performance value of materials which meet the following requirements: less than 100 mm char length and less than 2 s afterflame after removal from flame, when tested in accordance with ISO 15025, procedure B (bottom-edge ignition) on the outer material, and the char length measured using a modified ISO method as described in Annex A. These methods are used to measure and describe the properties of materials, products, assemblies or garments, in response to convective and radiant energy generated by an electric arc in open air under controlled laboratory conditions.
The materials used in these methods are in the form of flat specimens for method A and garments for method B.
Method A is used to determine the arc rating of materials and material assemblies when tested in a flat configuration.
Method B is used to measure garment response, not arc rating, to an arc exposure including all the garment findings, sewing thread, fastenings, fabrics and other accessories when tested on a male mannequin torso. Method B is also used for accident replication. It is the responsibility of the user of this part of IEC 61482 to establish appropriate safety and health practices prior to use. For specific precautions, see Clause 7. The test methods in this part of IEC 61482 are not directed to classify by protection classes. Methods determining protection classes are prescribed in IEC 61482-1-2. 2 Normative references 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. ISO 3175-2, Textiles – Professional care, drycleaning and wetcleaning of fabrics and garments – Part 2: Procedure for testing performance when cleaning and finishing using tetrachloroethene ISO 6330, Textiles – Domestic washing and drying procedures for textile testing SIST EN 61482-1-1:2009
61482-1-1 © IEC:2009 – 7 – ISO 9151, Protective clothing against heat and flame – Determination of heat transmission on exposure to flame ISO 15025:2000, Protective clothing – Protection against heat and flame – Method of test for limited flame spread 3 Terms, definitions and symbols For the purposes of this document, the following terms, definitions and symbols apply. NOTE For definitions of other textile terms related to the topic, see ASTM D-123 [7]1).
3.1 Terms and definitions 3.1.1
arc duration time duration of the arc NOTE Arc duration is expressed in s. 3.1.2
arc energy Warc electrical energy supplied to the arc and converted in the arc; sum of the instantaneous arc voltage values multiplied by the instantaneous arc current values multiplied by the incremental time values during the arc duration NOTE Arc energy is expressed in kJ or kW·s. 3.1.3
arc gap distance between the arc electrodes NOTE Arc gap is expressed in mm. 3.1.4
arc rating value attributed to materials or material systems that describes their performance to exposure to an electrical arc discharge NOTE The arc rating is expressed in kW·s/m2 – or optionally in cal/cm2 – and is derived from the determined value of ATPV or EBT50 (should a material or material system exhibit a breakopen response below the ATPV value). 3.1.5
arc thermal performance value (ATPV) in arc testing, the incident energy on a material or a multilayer system of materials that results in a 50% probability that sufficient heat transfer through the tested specimen is predicted to cause the onset of a second degree skin burn injury based on the Stoll curve, without breakopen
NOTE ATPV is expressed in kJ/m2 or kW·s/m2 (cal/cm2). 3.1.6
arc voltage voltage across the arc NOTE Arc voltage is expressed in V. ————————— 1)
Figures in square brackets refer to the bibliography. SIST EN 61482-1-1:2009
– 8 – 61482-1-1 © IEC:2009 3.1.7
asymmetrical arc current total arc current produced during closure; it includes a direct component and a symmetrical component NOTE Asymmetrical arc current is expressed in A. 3.1.8
breakopen in electric arc testing, material response evidenced by the formation of one or more openings in the material which may allow flame to pass through the material NOTE 1 The specimen is considered to exhibit breakopen when any opening is at least 300 mm2 in area or at least 25 mm in any dimension. A single thread across the opening does not reduce the size of the hole for the purposes of this part of IEC 61482.
NOTE 2 A multilayer specimen is considered to exhibit breakopen when all layers show formation of one or more openings. 3.1.9
breakopen threshold energy EBT50 incident energy on a fabric or material that results in a 50 % probability that sufficient heat transfer through the tested specimen is predicted to cause the tested specimen to break open NOTE The breakopen threshold energy is expressed in kJ/m2 or kW·s/m2 (cal/cm2). 3.1.10
burning time time for which a flame is visible after exposure to arc NOTE Burning time is expressed in s. 3.1.11
calorimeter device for measuring the heat flux and incident energy 3.1.12
charring formation of carbonaceous residue as the result of pyrolysis or incomplete combustion 3.1.13
closure point on supply current waveform where the arc is initiated 3.1.14
clothing assembly of garments worn by workers 3.1.15
delta peak temperature
ΔTp difference between the maximum temperature and the initial temperature of the sensor during the test exposure time NOTE Delta peak temperature is expressed in °C. 3.1.16
dripping material response evidenced by flowing of the fibre polymer SIST EN 61482-1-1:2009
61482-1-1 © IEC:2009 – 9 – 3.1.17
electric arc
self-maintained gas conduction for which most of the charge carriers are electrons supplied by primary-electron emission [IEV 121-13-12] NOTE During live working, the electric arc is generated by gas ionisation arising from an unintentional electrical conducting connection or breakdown between live parts or a live part and the earth path of an electrical installation or an electrical device. During testing, the electric arc is initiated by the blowing of a fuse wire. 3.1.18
embrittlement formation of a brittle residue as the result of pyrolysis or incomplete combustion 3.1.19
exposure time shortly before, during and for 30 s after an arc thermal exposure has been initiated 3.1.20
garment single item of clothing which may consists of single or multiple layers 3.1.21
heat attenuation factor (HAF) per cent of the incident energy which is blocked by a material at an incident energy level equal to ATPV 3.1.22
heat flux q thermal intensity of an electric arc indicated by the amount of energy transmitted per unit surface area and time NOTE Heat flux is expressed in kW/m2. 3.1.23
ignition initiation of combustion 3.1.24
incident energy Ei heat energy (total heat) received at a unit surface area as a result of an electric arc NOTE 1 The heat energy is measured as a proportional peak temperature rise ΔTp of a calorimeter sensor. NOTE 2 Incident energy is expressed in kJ/m2 or kW·s/m2 (cal/cm2). NOTE 3 In an arc test, incident energy for a specimen is determined from the average temperature-rise response of the two monitoring sensors adjacent to the test specimen. 3.1.25
material fabric or other substances of which the garment is made, this may consist of single or multiple layers SIST EN 61482-1-1:2009
– 10 – 61482-1-1 © IEC:2009 3.1.26
material response subjective observation of the reaction of the material to an electric arc indicated by the following characteristics: burning time (after flame, ignition), breakopen, melting, dripping, charring, embrittlement, shrinkage
3.1.27
melting material respon
...
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