International Standards and Conformity Assessment for all electrical, electronic and related technologies



Reference EN 61482-1-2:2007
Title 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)
Project Number 20660
Abstract/Scope 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.


Current Stage code 6060
Current Stage code date 2007-03-30
Current Stage code deadline 2007-12-01
Deadline date for vote  


Order Voucher  


IEC Technical Body IEC/TC 78
Reference Document IEC 61482-1-2:2007 (EQV)
ICS 13.220.40 - Ignitability and burning behaviour of materials and products
29.260 - Electrical equipment for working in special conditions
29.260.99 - Other electrical equipment for working in special conditions
Keywords Live working; Clothing; Thermal protection; Flame resistant; Arc
Note Supersedes CLC/TS 50354:2003
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 2007-03-30 2007-12-01 export to doc file  EN  FR  DE
5099 2007-03-01 2007-05-01  
5061 2007-01-29 2007-03-01  
5060 2006-11-10 2006-11-27 export to doc file  EN
5020 2006-05-05 2006-10-06  
1090 2006-05-02 2006-05-05  

Implementation Dates

date of Ratification (DOR) (1) 2007-03-01
date of Availability (DAV) (2) 2007-03-30
date of Announcement (DOA) (3) 2007-06-01
date of Publication (DOP) (4) 2007-12-01
date of Withdrawal (DOW) (5) 2010-03-01


Supersedes CLC/TS 50354:2003
Superseded by FprEN 61482-1-2:2013
Normative reference (6) ISO 3175-2:1998
ISO 6330:2000
ISO 9151:1995
EN 60584-1:1995

(1) Date of ratification (dor) date when the Technical Board notes the approval of an EN (and HD for CENELEC), from which time the standard may be said to be approved

(2) Date of availability (dav) date when the definitive text in the official language versions of an approved CEN/CENELEC publication is distributed by the Central Secretariat

(3) Date of announcement (doa) latest date by which the existence of an EN (and HD for CENELEC), a TS or a CWA has to be announced at national level

(4) Date of publication (dop) latest date by which an EN has to be implemented at national level by publication of an identical national standard or by endorsement

(5) Date of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn

(6) This list of normative references is purely indicative. The only official list of normative reference is the list of the published standard.