?!DOCTYPE html> 浅谈造成电缆故障的原?- 金华市梅兰日兰电气有限公?/title> <meta name="Keywords" content=""> <link href="/template/NESTXY00007/css/bootstrap.min.css" rel="stylesheet"> <link href="/template/NESTXY00007/css/style.css" rel="stylesheet"> <link href="/template/NESTXY00007/css/shake.css" rel="stylesheet"> <link href="/template/NESTXY00007/dist/aos.css" rel="stylesheet" /> <meta http-equiv="Cache-Control" content="no-transform" /> <meta http-equiv="Cache-Control" content="no-siteapp" /> </head> <body> <div style="position:fixed;left:-9000px;top:-9000px;"></div> <header data-headroom id="header" class="navbar navbar-default navbar-fixed-top" role="navigation"> <div class="navbar-top visible-lg"> <div class="container"> <span class="pull-left">金华市梅兰日兰电气有限公司为您免费提?a href="/">金华电缆</a>?a href="/supply/">金华电线电缆批发</a>?a href="/news/">金华电线厂家</a>等相关信息发布和最新资讯,敬请关注?/span> <span class="pull-right"><script type="text/javascript" src="http://home.nestcms.com/32129/stat/"></script></span> </div> </div> <div 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href='http://www.91suoyin.com/news/98.html'>http://www.91suoyin.com/news/98.html</a></p> </article> <article class="info"> <div class="bd"> <div><p style="text-indent:2em;"> <span style="font-size:14px;line-height:2;">电缆故障的直接原因是绝缘下降而被击穿。导敏绝缘下降的因素很多,下?b>金华电缆</b>?b><b>金华电线</b>电缆</b>及金华电线厂家依据实际运转经验,归纳起来不外乎以下几种状况?/span> </p> <p style="text-indent:2em;"> <span style="font-size:14px;line-height:2;">1)外力损害。由近几年的运转分析来看,尤其是在经济高速发展中的上海浦东,现在相当多的电缆故障都是因为机械损害引起的。比如:电缆敷设装置时不标准施工,简单形成机械损害;在直埋电缆上搞土建施工也极易将运转中的电缆损害等。有时如果损害不严峻,要几个月甚至几年才会导致损害部位彻底击穿构成故障,有时破坏严峻的可能发作短路故障,直接影响用电单位的安全出产?/span> </p> <p style="text-indent:2em;"> <span style="font-size:14px;line-height:2;">2)绝缘受潮。这种状况也很常见,一般发作在直埋或排管里的电缆接头处。比如:电缆接头制作不合格和在潮湿的气候条件下做接头,会使接头进水或混入水蒸气,时刻久r在电场效果下构成水树枝,逐步损害电缆的绝缘强度而形成故障?/span> </p> <p style="text-indent:2em;"> <span style="font-size:14px;line-height:2;">3)化学腐蚀。电缆直接埋在有酸碱效果的地区,往往会形成电缆的铠装、铅皮或外护层被腐蚀,保护层因长时间遭受化学腐蚀或电解腐蚀,致使保护层失效,绝缘下降,也会导致电缆故障。化:单位的电缆腐蚀状况就相当严峻?/span> </p> <p style="text-indent:2em;"> <span style="font-size:14px;line-height:2;">4)长时间过负荷运转。超负荷运转,因为电流的热效应,负载电流经过电缆时必然导致导体发热,同时电荷的集肤效应以及钢铠的涡流损耗、绝缘介质损耗也会产乍附加热量,从而使电缆温度升高。长时间超负荷运转时,过高的温度会加速绝缘的老化,以致绝缘被击穿。尤其在炎热的夏日,电缆的温升常常导致电缆绝缘薄弱处首要被击穿,因此在夏日,电缆的故障也就特别多?/span> </p> <p style="text-indent:2em;"> <span style="font-size:14px;line-height:2;">5)电缆接头故障。电缆接头是电缆线路中薄弱的环节,由人员直接过错(施工不良)引发的电缆接头故障时常发作。施工人员在制作电缆接头过程中,如果有接头压接不紧、加热不充分等原网,都会导致电缆头绝缘下降,从而引发事故?/span> </p> <p style="text-indent:2em;"> <span style="font-size:14px;line-height:2;">6)环境和温度。电缆所处的外界环境和热源也会形成电缆温度过高、绝缘击穿,甚至爆炸起火?/span> </p> <p style="text-indent:2em;"> <span style="font-size:14px;line-height:2;">7)电缆本体的正常老化或自然灾害等其他原因?/span> </p> <p style="text-indent:2em;"> <span style="font-size:14px;line-height:2;"><img src="/uploads/image/20180329/20180329162730_1239.jpg" alt="" /><br /> </span> </p> <p style="text-indent:2em;"> <br /> </p> <p style="text-indent:2em;"> <br /> </p> <p style="text-indent:2em;"> <br /> </p></div> </div> <p align="center" class="pageLink"></p> <p 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