This International Standard describes a test method which can provide preliminary differentiation between similar insulating materials, with respect to their resistance to damage when exposed to high-voltage, low-current arc discharges, occuring close to their surfaces. The discharges cause localized thermal and chemical decomposition and erosion and eventually a conductive path forms across the insulating material. The severity of the test conditions is gradually increased: in the early stages a low-current arc discharge is repeatedly interrupted, whereas in the later stages, the arc current is raised in successive steps.
DS/EN 61621-1998由丹麦标准化协会 DK-DS 发布于 1998-07-02,并于 1997-12-23 实施。
DS/EN 61621-1998在国际标准分类中归属于: 29.035.01 绝缘材料综合。
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