推荐回答(5个)
矿物绝缘电缆是一种以铜护套包裹铜导体芯线,并以氧化镁粉末为无机绝缘材料隔离导体与护套的电缆,最外层可按需选择适当保护套。
矿物电缆安装方法:
1、将电缆按所需长度先用管子割刀在上面割一道痕线(图1,铜护套不能割断)。
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2、再用斜口钳将护套铜皮夹在钳口之间按顺时针方向扭转,以一步步地夹住护套铜皮的边并以较小角度进行转动剥离,直至割痕处。
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3、用清洁的干布彻底清除外露导线上的氧化镁绝缘料,然后将束头套在电缆上,并将黄铜封杯垂直拧在电缆护套铜皮上,开始时应用手束拧,并用束头在封杯上滑动来检查杯的垂直度。确真垂直后再用管丝钳夹住封杯的滚花座继续进行安装,直至虎护皮一端低于封杯内局部螺纹处!
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4、从约距电缆趟开端600mm处用喷灯火焰加热电缆,并将火焰不断地移向电缆敞开端,以便将水分排除干净,切记只可向电缆敞开端移动火焰,否则将会把水分驱向电缆内部。
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5、用欧姆表分测量一下芯与芯、芯与护套之间的绝缘电阻,若测量结果达到要求,测可以在封口杯内注入封口膏。
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6、注意封口膏应从一侧逐渐加入,不能太快,以便将空气排尽。等封口膏加满,在压上杯盖,接着用热缩套管把线芯套上。
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参考资料:
百度百科-矿物绝缘电缆
矿物电缆:即矿物绝缘电缆,是用退火铜作为导体、密实氧化镁作为绝缘、退火铜管作为护套的一种电缆,必要时,在退火铜护套外面挤包一层塑料外护层,特殊要求无烟无卤场合可以在外面加一层低烟无卤护套。
矿物质防火电缆连接方法:采用矿物质电缆中间连接器,终端则采用电缆终端头,终端头上有接线端子,可以与设备的母排、接线端子等连接。连接时应注意:
1、电缆绝缘电阻摇测值应符合规范要求,否则应进行除湿操作;剥除铜护套时应小心,避免损伤线芯;
2、剥除氧化镁粉末后应使用干净的棉纱将线芯上的剩余粉末清理干净,严禁用嘴吹,以免使电缆受潮;
3、电缆接头制作必须使用质量合格的硅胶、封口膏和专用施工工具;制作时应先从配电室电缆集中的地方做起,依次向负荷终端施工。
矿物质电缆就是最早的防火电缆,起源于瑞士,后由英国发展成一定规模并制定防火标准bs6387标准。矿物绝缘类不燃性电缆,由铜芯、矿物质绝缘材料、铜等金属护套组成,具有良好的导电性能、机械物理性能、耐火性能、还具有良好的不燃性、这种电缆在火灾条件下,不仅能够保证火灾延续时间内的消防供电、还不会延燃、不产生烟雾。
安装方法:
1、确定电缆长度,切除多余电缆,在电缆制作终端部用管子割刀在电缆表面割一道痕线(铜护套不能割断,深度为电缆铜护套2/3厚度最佳)用剥离器(斜口钳)将铜护套按顺时针方向,并以较小角度进行转动直至痕线处;
2、在安装铜封杯之前,应用清洁的干布彻底清除外露导线上的氧化镁材料,将束头套在电缆上,再将黄铜杯垂直拧在电缆护皮上,用束头在封杯上滑动,检查封杯的垂直度,用管丝钳夹住封杯的滚花座,并继续进行安装,至铜护皮一端平行于封杯内局部螺纹处;
3.距电缆开端600mm处用喷灯外焰加热电缆,并将火焰不断移向电缆敞开端,以便将水份排除干净,切记只可向电缆终端方向移动火焰,否则将会把水份驱回电缆内部;
4、用欧姆表分别测量导体与导体、导体与铜护套之间的绝缘电阻,若测量值在100MΩ以上则可;
5、向封杯内注入封口膏(电缆温度在80℃~100℃最佳),注入封口膏应从一侧逐渐加入,不能太快,以便将空气排空,直至加入稍过量为宜;
6、压上封杯盖,用热缩管把线芯套上并加热,此时用欧姆表测量一下电缆的绝缘电阻,如果绝缘电阻值偏低则重新做一次,直至达到要求为止。
7、测量绝缘电阻,试通电运行。
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矿物电缆BTTZ【国标GB/T13033-2007】有专门配套的终端头 和中间联接器
安装前电缆两端一定要①拨开铜护套;②喷火 除潮;③涂上密封泥、或热熔胶(防止受潮)
安装时摇表摇一下,正常是无穷大.....送电标准是0.5MΩ【达不到 就重复之前步骤,或切除短路部分】
其他非国标型号矿物电缆,和普通电缆接法一样....压上接线端子
矿物电缆全名叫“矿物氧化镁绝缘电缆”,由矿物材料氧化镁粉作为绝缘的铜芯铜护套电缆,矿物绝缘电缆由铜导体、氧化镁、铜护套两种无机材料组成。
矿物质电缆连接方法:
采用矿物质电缆中间连接器,终端则采用电缆终端头,终端头上有接线端子,可以与设备的母排、接线端子等连接。
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