Northrock PPE Catalogue - USA Edition

IEC 61482-2 THERMAL HAZARDS OF AN ELECTRIC ARC INTERNATIONAL STANDARDS

IEC 61482-2 protective clothing against the thermal arc hazards of an electric arc.

THE TEST The standard has 2 test methods, to comply with the standard either or both tests must be carried out.

FR706

OPEN ARC METHOD IEC 61482-1-1

The open arc test method is used to determine the thermal insulating properties of a fabric when exposed to the energy of an electric arc. All results are in cal/cm², the higher the value, the greater the protection. There are 3 possible values determined during this test method:​ ATPV is the maximum incident energy that protective garment can be exposed to before the wearer would have a 50% probability of 2nd degree burns.​ EBT is the incident energy on a material that results in a 50% probability of breakopen. ELIM (Incident Energy Limit): This value is the highest incident thermal energy to which the garment can be exposed with a 0% risk of the wearer getting a second degree burn injury.

BOX TEST METHOD IEC 61482-1-2

During the test the specimen is exposed to an electric arc, simulating typical exposure conditions for a short circuit current, confined in a box for 0.5 seconds.

• For APC 1, the specimen is exposed to a current of 4 kA (400 V, 168 kJ)

• For APC 2, the specimen is exposed to a current of 7 kA (400V, 320 kJ) ​

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