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IEC 61482-2

Certified and approved garments appropriate for use in work environments where there is a risk of electric arcs.
When there is a risk of being exposed to an electric arc, for example, when servicing equipment in non-arc-safe distribution plants or electrical switchboards, or when working on high voltage equipment, personnel are recommended to wear arc-approved protective clothing.

What protection does your clothing need to provide during an arc blast?

The plasma clouds, flames, radiation and metal splashes from the electrodes hit the fabric during an arc blast. When this occurs, the fabric must provide enough insulation to prevent second-degree skin burns. An effective fabric used in an arc garment must provide shielding against the flame and metal splashes, as well as insulation from the intense heat. The standard IEC 61482-2 includes two test methods, IEC 61482-1-1 (open arc) and IEC 61482-1-2 (box test). Our garments are certified according to both test methods, or at least one of them. The garments must cover the whole body. For example, jacket and trousers must be worn together with other personal protective equipment (PPE), including a helmet with protective visor, protective gloves and protective footwear (boots) to achieve the correct level of protection. Wearing additional layers of garments is very important and will increase protection. Flame certified garments must be used for layering.

Updated standard and new symbol
The standard have received a new symbol, but both symbols are valid and the pictogramme label in our garments will be updated during a transitional period. The standard is also updated with a new value: ELIM (Incident Energy Limit). ELIM complements the Open Arc value and indicates the energy level that the garment can be exposed to in order to prevent a second-degree skin-burn.


ARC TEST IEC/EN 61482-1-1 – OPEN ARC TEST

EN 61482-1-1: Protective clothing against the thermal hazards of an electric arc. Part 1-1 – Method 1: Determination of the arc rating (ATPV or EBT50) of flame resistant material or clothing.

ATPV, EBT and ELIM are evaluated in the same test, an open arc test (EN 61482-1-1/ASTM F1959). If the material has more thermal insulation value than arc tensile strength in resistance to heat, then it will breakopen first. If the opposite is true, the material will allow burns before it breaks open. The lowest value is the one that is used in the marking of the garments.

ATPV (Arc Thermal Performance Value) is the incident energy on a material that results in a 50% probability that enough heat transfer through the specimen is predicted to cause the onset of second-degree burn injury based on the Stoll Curve. The higher the value, the better the protection.

EBT (Energy Breakopen Threshold) is the incident energy on a material that results in a 50% probability of breakopen. Breakopen is defined as any open area at least 1.6 cm². The higher the value, the better the protection.
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ATPV, EBT and ELIM can be tested on single or multiple layers of material. When you test multiple layers, you will achieve a higher value then if the fabrics were tested separately because air trapped between the fabrics also has an insulating and protective effect.

HAF (Heat Attenuation Factor) is the measurement of the percentage of energy that is blocked by the material or material system.

ELIM (Incident Energy Limit) complements the ATPV and EBT values for Open Arc test. ELIM indicates the energy level that the garment can be exposed to with a 0% probability of second-degree burns. ATPV measures the energy level at which there is a 50% probability of second-degree burns. ELIM will be introduced on material combinations which has been tested with multiple layers during a transitional period. Garments which are tested against open arc shall achieve at least an ELIM value ≥3,2 cal/cm², where ATPV or EBT value shall achieve at least ≥4 cal/cm².

Garments will be certified according to:

IEC 61482-2:2009
The EBT or ATPV value

IEC 61482-2:2018
The ATPV or ELIM value, or a combination of both
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ARC TEST IEC/EN 61482-1-2 – BOX TEST

EN 61482-1-2: Protective clothing against the thermal hazards of an electric arc. Part 1-2 – Method 2: Determination of the arc protection class of material and clothing by using a constrained and directed arc (box test).

The garments are tested and evaluated in two classes in the same test; a box test. (Voltage: 400 V, Duration: 500 ms, Frequency: 50 Hz or 60 Hz).

IEC 61482-2:2009
Class 1 = 4 kA (arc energy 168 kJ)
Class 2 = 7 kA (arc energy 320 kJ)

IEC 61482-2:2018
APC = 1 (4 kA, arc energy 168 kJ)
APC = 2 (7 kA, arc energy 320 kJ)

The result is approved or not approved, and the test reports includes comments on functionality after exposure.