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IEC 61482-1-2: Protection against the Thermal Hazards of an Electric Arc (Box Test)
This standard sets out the specifications for materials and clothing designed to protect the wearer from the risks associated with electric arcs.
Two categories of protection are available:
Class 1:
Electric arc lasting time = 0.5 second, applied current = 4kA
Class 2:
Electric arc lasting time = 0.5 second, applied current = 7kA
 
Only when fulfill all the requirements below can claim to be in compliance with ENIEC 61482-1-2
 
Applied electric arc current 4kA (Class 1)
Arc duration 500ms
Voltage of open test circuit 400V
Copper/aluminium electrodes Electrodes gap 30mm
Electrodes distance to sample 300mm
 
 
EN IEC61482-1-2 規定
Assessment:
EN 61482-1-2 Requirements sample 1 sample 2 sample 3 sample 4
Burning time ≤ 5s        
No melting through to the inner side        
No hole bigger than 5mm in any direction (in the innermost layer)        
All eight heat flux results below corresponding Stoll values        
 
Property sample 1 sample 2 sample 3 sample 4
Burning time, s        
Melting through to the inner side        
Hole formation > 5mm        
Embrittlement        
Embrittlement on the outside        
Charring on the outside        
Dripping        
Shrinkage        
Transmitted incident energy Eit (both calorimeters), kJ/m2        
Time to maximum temp rise
Tmax(both calorimeters), s(s)
       
Comparison: Maximum incident energy allowed to avoid second- degree burn (both calorimeters), kJ/m2        
Maximum temperature rise ∆ Tp (both calorimeters), °C        
Comparison: Maximum temperature rise allowed to avoid second-degree burn (both calorimeters), °C        
 
EN469
EN659 & EN420
EN13911
ENISO 11612
ENISO 11611
EN1149
ENIEC 61482-1-2
 
 
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