Workwear Off-duty Personal Protective Equipment Footwear

EN-IEC 61482-2:

2020 Protective clothing against the thermal hazards of an electric arc.

EN IEC 61482-2:2020 supersedes IEC 61482-2:2009.

This part of EN 61482 specifies requirements and test methods applicable to materials and garments for protective clothing for electrical workers against the thermal hazards of an electric arc. Electric shock hazards and other effects like noise, light emissions, pressure rise, hot oil, the consequences of physical and mental shock or toxic influences are not covered by this standard. Protection of eyes, face, head, hands, and feet against electric arc hazard fall outside the scope of this standard.

EN-IEC 61482-2 includes two methods for testing. Garments can be certified according to one of the test methods or to both test methods.

Arc Testing Methods:

  1. EN-IEC 61482-1-1:2019 supersedes IEC 61482-1:2009 – “Open Arc Test Method” (used in the USA)

The Open Arc test method (ATPV test and garment test) determines the Arc Rating Arc Thermal Protection Value (ATPV level), ELIM (incident energy limit) or Energy Break Open Threshold (EBT) of flame-resistant material (Method A) and clothing (Method B). The basic principle is that the ATPV of the garment must be higher than the Arc Flash energy level as calculated. The “Open Arc” test method is the same as the original North American method for measuring the Arc Thermal Performance Value (ATPV) as used in ASTM F1959. The Arc Rating is expressed in cal/cm² (calories per centimetre square).

  1. EN-IEC 61482-1-2:2015 – “Box Test Method” (used in Europe)

In the Box Test Method, materials and clothing will be tested using two methods: the material box test method and the garment box test method.

  • The material box test method is used to measure and determine material response to an arc exposure when tested in a flat configuration. A quantitative measurement of arc thermal performance is made by means of the energy transmitted through the material. During this test, a fabric sample is exposed to an electric arc produced by a 4kA or 7kA short circuit. In this test, the arc does not last any longer than 500ms. The amount of heat transmitted through the sample is measured during and after the test. Based on the resulting data and a Stoll curve, the length of time it would take to cause the onset of second-degree burns is subsequently determined. Samples are also assessed for after-flaming, hole formation, melting, etc.
  • The garment box test method is used to test the function of the protective clothing after an arc exposure (i.e., no heat flux will be measured). This test must be conducted on a complete garment. In doing this, the objective is not to determine the energetic value, but to assess the garment after exposure to an electric arc for defects in the seams, fastenings, and other closures,

The garments are tested and evaluated in two classes in the same test:

APC1 (Arc protection class) protects against electric arc of 4kA (arc energy 168 kJ)
APC2 protects against electric arc of 7kA (arc energy 320 kJ)

EN-IEC 61482-2: Products

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