IEC 61482 - Electric Arc
The IEC 61482 standard is an international standard that addresses protective clothing for workers exposed to thermal hazards from electric flames and electric arcs. This standard was developed by the International Electrotechnical Commission (IEC) to ensure the safety of workers who operate in environments where electrical energy poses a risk of injury, such as electricians, maintenance personnel, and workers in the energy sector.
The IEC 61482 standard consists of two parts:
- IEC 61482-1-1: This part covers the so-called “open arc” test method. It evaluates the arc flash performance of materials and clothing used for protection against electric arcs. It determines an “Arc Rating” (ATPV or EBT), expressed in calories per square centimeter (cal/cm²). The Arc Rating indicates how much thermal energy the material can withstand before a second-degree burn occurs on the wearer. The higher the Arc Rating, the more protection the material provides.
- IEC 61482-1-2: This part covers the “box test” method. It evaluates the performance of protective garments in a controlled arc flash test, in which an arc flash is generated in a specially designed test setup (the “box”). In this test, the protective clothing is classified as Class 1 (4 kA) or Class 2 (7 kA), based on the amount of current (expressed in kiloamperes) that the clothing can withstand during an arc flash incident.
The IEC 61482 standard sets requirements for both the materials used in protective clothing and the design of the garments themselves. Clothing that complies with this standard provides protection against the thermal hazards of electric flames and arcs, including burns and other injuries that may result from exposure to these hazards.
It is important to note that IEC 61482 is not the only standard that addresses protective clothing for electrical hazards. Other standards, such as ASTM F1506, NFPA 70E, and EN ISO 11612, may also be relevant, depending on the specific risks and the location where the clothing is used.