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柱上开关为何使用单只电压互感器？如何接线？
柱上开关为何使用单只电压互感器？如何接线？
高低压开关类9/55
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![宽甸满族自治县气象台发布道路结冰黄色预警[III级/较大]](http://p3-sign.bdxiguaimg.com/tos-cn-p-0015/oERAJEwDg5vBKPFFfPn9ADAzIZZmfbQuKyO7mD~tplv-pk90l89vgd-fglass:864:486:90.jpeg?appId=32&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=101_middle_image&imageType=list&isImmersiveScene=0&is_stream=0&lk3s=9d3f5bff&logId=2024122708571859FA49A590F4B0C3974C&requestFrom=101&x-expires=1766797038&x-signature=Jn2F41J%2F3MOHYRkbprrsghQdnoY%3D)
