在架空线路导线与杆塔横担之间有悬垂串并不导致正极性操作冲击50%闪络电压的降低,而对负极性则略有降低。在雷电波作用下绝缘子串的存在使闪络电压显著降低,但对不同型式绝缘子,降低率不同。有机绝缘子串的闪络电压最高。悬垂串与横担间装有连接金具时,使绝缘串的闪络电压提高。安装金具的长度可根据结构和工艺性来选择 ...
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