【正文】 ................................................................. 6 基本參數(shù)特性 ..................................................................................................... 7 斷路器的基本特性有 ................................................................................. 7 額定運(yùn)行短路分?jǐn)嗄芰?(Ics) ....................................................................... 8 斷路器自由脫扣 ........................................................................................ 8 接線方式 ............................................................................................................ 9 控制回路 ............................................................................................................ 9 發(fā)展?fàn)顩r ...........................................................................................................10 2 隔離開關(guān) .....................................................................................................................11 定義 ..................................................................................................................11 基本介紹 ...........................................................................................................11 主要作用 ...........................................................................................................11 特點(diǎn) ..................................................................................................................12 應(yīng)用 ..................................................................................................................13 類型 ..................................................................................................................13 低壓隔離開關(guān) ...........................................................................................13 高壓隔離開關(guān) ...........................................................................................14 高壓斷路器 ..............................................................................................14 隔離功能 ...........................................................................................................15 隔離開關(guān)的選擇 .......................................................................................15 隔離開關(guān)的配置 .......................................................................................15 隔離開關(guān)選型 ...........................................................................................16 改進(jìn) ..................................................................................................................16 維護(hù) ..................................................................................................................17 使用過程常見問題 ............................................................................................17 3 負(fù)荷開關(guān) .....................................................................................................................19 定義 ..................................................................................................................19 開關(guān)分類 ...........................................................................................................19 高壓負(fù)荷開關(guān) ...........................................................................................20 工作原理 ..................................................................................................20 低壓負(fù)荷開關(guān) ...........................................................................................20 主要技術(shù)參數(shù) ....................................................................................................21 4 熔斷器 .........................................................................................................................22 定義 ..................................................................................................................22 基本介紹 ...........................................................................................................22 簡(jiǎn)介 .........................................................................................................22 工作原理 ...........................................................................................................23 特點(diǎn) ..................................................................................................................23 選擇 ..................................................................................................................23 分類 .........................................................................................................23 低壓管裝熔斷器分類 ................................................................................25 熔體額定電流的選擇 ..........................................................................................26 熔斷器的安秒特性 .............................................................................................27 熔斷器的級(jí)間配合 .............................................................................................28 注意事項(xiàng) ...........................................................................................................28 與斷路器的區(qū)別 ...............................................................................................29 5 開關(guān)柜 .........................................................................................................................30 五防 ...................................................................................................................30 開關(guān)柜常見分類 .................................................................................................30 按照電壓等級(jí)分類 ....................................................................................30 按照電壓波形分類 ....................................................................................30 按照內(nèi)部結(jié)構(gòu)分類 ....................................................................................31 按照用途分類 ....................................................................................