摘要
利用红外辐射加热炉及绝缘电阻测量系统,模拟ISO 834火灾条件,研究了交联聚乙烯绝缘电缆在涂敷不同厚度防火涂料和穿上涂有不同厚度钢结构防火涂料金属管两种保护方式下,绝缘电阻的失效时间及温度。结果表明:在两种保护方式下,交联聚乙烯绝缘电缆的绝缘失效时间与涂层厚度成正比;与直接涂敷电缆防火涂料相比,穿上涂有防火涂料的金属管对交联聚乙烯绝缘电缆的保护效果更明显。
The insulation failure time and temperature of XLPE insulated cable coated with various thickness of fire retardant coating or wrapped by the metal tube with various thickness of fire retardant coating were studied by using infrared radiation heating furnace and insulation resistance measurement system,and based on simulated ISO 834 standard fire condition.The results show that the insulation failure time is proportional to the coating thickness under the two protective ways.The protective effect on the cable wrapped by the metal tube with fire retardant coating is more remarkable.
出处
《绝缘材料》
CAS
北大核心
2011年第6期35-39,共5页
Insulating Materials
基金
公安部应用创新计划项目(2010YYWJXY121)
关键词
交联聚乙烯绝缘电缆
防火涂料
绝缘失效
XLPE insulated cable
fire retardant coatings
insulation failure
