简要说明：天联牌的VV型三相四线电缆产品：估价：12，规格：VV型三相四线电缆，产品系列编号：齐全

　　

Tianjin Cable General Factory first branch factory, founded in 1971, the enterprise has more than 300 workers, engineering and technical personnel more than 30 people, the factory covers an area of 2000 square meters, with 15000000 yuan in fixed assets, enterprises have the production and testing equipment more than 120 Taiwan (number of pieces), the annual output value of 150000000 yuan. Over the years, I plant products used in the dozens of coal industry group and mines, gained high praise and evaluation. Enterprises with "integrity-based, customer first, quality first" for the purpose, passion to serve customers and the public are welcome to propose more guidance to the products of our factory, and seek common development.耐火电力电缆NH-VV3*120 耐火特性符合GB12666.6-90要求(IEC331)     1． 交流额定电压：U0/U 0.6/1KV     2． 最高长期工作温度：阻燃聚氯乙烯绝缘和护套70℃和105℃     氟塑料绝缘和护套200℃和260℃     交联聚乙烯绝缘90℃     低烟无卤阻燃聚烯烃70℃     低烟无卤阻燃交联聚烯烃90℃和120℃     3． 最低环境温度：阻燃聚氯乙烯护套：固定敷设-40℃，非固定敷设-15℃     氟塑料绝缘和护套：固定敷设-60℃；非固定敷设-20℃     4． 耐火特性：     符合IEC331规定 火焰温度750℃、燃烧时间3h、冷却时间12h、附加额定电压、附加3A电流     符合GB12666.6-A类 火焰温度950-1000℃、燃烧时间90min、附加额定电压3A电流     符合GB12666.6-B类 火焰温度750-800℃、燃烧时间90min、附加额定电压3A电流     5． 电缆安装敷设温度不低于0℃