BS EN 61482-1-2:2014
活着工作 防止电弧热危害的防护服 测试方法 方法2:采用约束定向电弧(箱式试验)测定材料和服装的电弧防护等级
Live working. Protective clothing against the thermal hazards of an electric arc. Test methods. Method 2: Determination of arc protection class of material and clothing by using a constrained and directed arc (box test)