IEC 61482-1-1:2009 ED1

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 E<sub>BT50</sub>) of flame resistant materials for clothing

Publication date:   May 27, 2009

General information

99.60 Withdrawal effective   Jul 3, 2019



TC 78 Live working

International Standard

13.220.40   Ignitability and burning behaviour of materials and products | 29.260.99   Other electrical equipment for working in special conditions



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IEC 61482-1-1:2009 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.

Life cycle


IEC 61482-1:2002 ED1


IEC 61482-1-1:2009 ED1
99.60 Withdrawal effective
Jul 3, 2019


IEC 61482-1-1:2019 ED2