标准摘要
[中文适用范围]： 范围和目标本技术报告适用于根据 IEC 439-1 制造的封闭式低压开关设备和控制设备组件。该测试须经制造商和用户双方同意。它不被视为型式试验。 [外文原描述]： This technical report makes allowance for internal overpressure acting on covers, doors, etc. and also takes into consideration the thermal effects of the arc or its roots on the enclosures and of ejected hot gases and glowing particles, but not damage to internal partitions.
英文名称Enclosed low-voltage switchgear and controlgear assemblies - Guide for testing under conditions of arcing due to an internal fault