电缆在火灾条件下的试验 – 电路完整性 – 第4部分：额定电压1 kV以上至30 kV及以下电缆在至少830 °C火焰冲击试验方法 (IEC 60331-4:2024) Tests for electric cables under fire conditions – Circuit integrity – Part 4: Test method for fire with shock at a temperature of at least 830 °C for cables of rated voltage higher than 1 kV up to and including 30 kV 标准发布组织为IEC，国际组织机构所属TC 20。
IEC60331-4:2024specifiesthetestmethodforelectriccablesrequiredtomaintaincircuitintegrityunderfireconditionsandmechanicalshock.Itappliestocableswithratedvoltagesuptoandincluding0.6/1.0kV,andisintendedforusewhenassessingtheperformanceofcablesinfiresituationswheremechanicalshock,suchasfallingdebrisorcollapsingstructures,mayoccur.Thisstandardisparticularlyrelevantforcablesusedinemergencycircuits,safetysystems,andothercriticalapplicationswhereoperationalcontinuityisessentialduringandafterafireevent.