描述
在小区变电站变压器处,PE线与N线连接并可靠接地,然后随L、N线共同敷设直至所有用户处,PE线沿途不允许有任何可断开处,直接与所有配电箱外壳连接,最终到用户插座。PE线是专门的保护线,引出后不允许再与N线相连,正常情况下PE线不通过负荷电流,与PE线相连的电气设备金属外壳不带电位。在民用建筑中,家用电器(有金属外壳的)大都有单独接地极的插头,采用TN-S供电,方便且安全。
产品承
保 证 全新原装进口,
保 证 安全准时发货,
保 证售后服务质量,
优势价格,大量现货。
主营DCS系统配件
机器人系统配件
大型伺服系统配件
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