摘要研究了三种不同保护方式及六种不同热辐射通量下阻燃聚氯乙烯绝缘聚氯乙烯护套电缆(ZR-VV)的绝缘失效规律。采用自主设计的SDR-1塑料电缆热辐射试验炉,模拟不同火灾热辐射环境,其中,热辐射通量分别取3,5,7,24,40,56 k W/m^2;三种电缆保护方式分别为直接暴露、穿金属管保护、穿阻燃PVC管保护,进行失效规律的研究,得出相应结论。
7IEC Standard 332- 3, Tests on electric cables under fire conditions. Part 3: Tests on bunched wires or cables[S].
8IEC60331 11--1999, Tests for electric cables under fire conditions-Circuit integrity-Part 11: Apparatus-Fire alone at a flame temperature of at least 750 ℃ [S].
9UL Standard 910--1998, Standard for fest for flame-propagation and smoke-density values for electrical and optical-fiber cables used in spaces transporting environmental air, Edition 5, November 23, 1998[S].
10UL Standard 1581- 200t, Reference standard for electrical wires, cables, and flexible cords, Edition 4, October 31, 2001 [S].
