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Improved Method of Transmission Tower Grounding Lead Based on PVC Protection
Author(s): 
Pages: 87-89,93
Year: Issue:  5
Journal: Insulators and Surge Arresters

Keyword:  输电线路接地引下线镀锌钢绞线PVC管;
Abstract: 输电线路杆塔接地引下线在水田及盐碱地等腐蚀性较强的土壤中,目前国内的施工方法中没有采用任何防护措施,接地引线经3~5年运行后,在出土及地面以内30 cm之间容易锈断,需要经常更换,运行成本较高,同时由于圆钢太硬,在测量接地引下线时,难以拆除及安装.为此提出将接地引下线用镀锌钢绞线代替圆钢;再套上PVC管进行防止腐蚀,由于PVC性能稳定,抗腐蚀能力强,这样基于PVC的防护,可以极大延长接地引下线使用寿命,减少了输电线路维护工作量及运行成本,该改进方法具有较强的推广价值.
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