IEC61482-1 Arc Flash "Box Test" Standard

By Chris Dodds on 24th June, 2014

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IEC61482-1 Arc Flash "Box Test" Standard

CATU Arc Flash Protection

Arc Flash -  IEC61482-1 Standards

 

An arc flash occurs when there is a short circuit through the air between conductors or conductors and ground, such a flash will result in numerous hazards such as: extreme temperature, explosive forces, toxic smoke and fumes, high noise levels, hot liquids, fast moving debris and very bright lights. What is Arc Flash?

There is a general hazard and potential risk of human injury due to electric arcs, particularly in the case of fault arcs which may internally occur with short-circuits in electric installations. These arcs cannot be avoided totally. It is very important for the personnel mounting, repairing, maintaining or operating electrical equipment and installations to be safely protected in every situation with the appropriate arc flash clothing.

IEC614821 Arc Flash

New Arc Flash Standards and Requirements:

IEC 61482-1 and the identical EN 61482-1 are split into two parts, which cover the methods for testing of clothing fabrics and garments that are designed to protect against arc flashes.

IEC 61482-1-2 and the identical EN 61482-1-2, which now supersedes ENV 50354, have become known as the "Box Test".

There are two test method versions: The "material box test", which includes heat transfer measurements and Stoll curve differential analysis, and the "garment box test", which requires only a visual assessment of the garment performance.

The box-test standard defines two test conditions, namely Class 1 and Class 2:

Class 1 tests at an arc current of 4kA and arc duration of 500 ms.
Class 2 tests at an arc current of 7kA and arc duration of 500 ms.

IEC61482-1 Gloves - Arc Flash Current IEC Projects

CATU Arc Flash Protective Equipment & Clothing

CATU Electrical have an extensive range of arc flash clothing and protection

Catu Arc Flash Protection Kits are available in 8cal/cm², 10cal/cm², 25cal/cm², 40cal/cm², 55cal/cm², 65cal/cm² and 100cal/cm². 

• Arc Flash Jacket & Coverall - 8 or 10 Cal per sqcm Arc Flash Protection includes: Arc flash face shield, helmet, safety glasses, protective hood and arc flash jacket or coverall made from Indura Ultra Soft fabric. Arc flash clothing and protection kit weight 4.03kg.

• Arc Flash Jacket & Coverall - 25, 40, 55 Cal per sqcm Arc Flash Protection includes: Arc flash protective hood with integrated face shield, protective coat, protective bib overall, electrically insulated helmet and safety glasses. Arc flash clothing made from Indura Ultra Soft fabric. Arc flash clothing and protection kit weight 6.7kg.

• Arc Flash Jacket & Coverall - 65 & 100 Cal per sqcm Arc Flash Protection includes: Arc flash protective hood with integrated face shield, protective coat, protective bib overall, electrically insulated helmet and safety glasses. Arc flash clothing made from Nomex fabric. Arc flash clothing and protection kit weight 6.7kg.

Catu Arc Flash Protection Kits

Reliable tests are necessary to confirm the clothing is arc resistant and guarantees the protective level required. Test method, procedure, set-up and parameters must meet the according practical needs. The test conditions have to be selected and terminated in accordance with the relevant power network and installation ones, and the practical exposure scenarios as well. Furthermore, quantitative assessment and evaluation is necessary in testing. The calorimetric arc effects are to be measured and a calorimetric analysis of the tests has to be carried out.

The new range of Catu Dexteri+ Electrical Insulating Gloves are tested to arc flash standard IEC61482-1-2 class 2.

Arc Flash Gloves

 

Video: Arc Flash PPE Laboratory Testing Video

IEC61482-1 Arc Flash Box Test Standard - The New Standard IEC 61482 And Experiences With The Box Method For Testing Of Clothing For Protection Against The Thermal Hazards Of An Electric Arc

 

  • Further Reading
 

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IEC61482-1 Arc Flash Box Test Standard





Category:  Electrical Safety & Arc Flash

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