ARC TEST IEC/EN 61482-1-2:2014 - BOX TEST

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

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

Class 1 = 4 kA (arc energy 168 kJ)
Class 2 = 7 kA (arc energy 320 kJ)

The result is approved or not approved and in the test reports the design is also commented on i.e. that the zip still works after  exposure.