檢查母(mu)(mu)線槽的質量(liang)，共(gong)箱封閉母(mu)(mu)線槽電話，重(zhong)點檢查以下幾點：

A. 母線(xian)槽(cao)外殼應(ying)完好(hao)無損。母線(xian)槽(cao)和(he)配(pei)(pei)電箱的型號和(he)規格滿足設(she)計要求。配(pei)(pei)件搭配(pei)(pei)正確，數量充(chong)足。

B、母線連(lian)接器的(de)連(lian)接面平整，共箱封閉母線槽(cao)多少錢一米，連(lian)接孔(kong)對稱，與邊緣的(de)距(ju)離相同。

C. 母線之間的絕緣板(ban)不能(neng)損壞或斷裂。

D、用500V兆(zhao)歐表測(ce)量各母(mu)線(xian)槽(cao)相(xiang)間(jian)(jian)、相(xiang)間(jian)(jian)與中性行間(jian)(jian)、PE行間(jian)(jian)、相(xiang)間(jian)(jian)及(ji)外殼間(jian)(jian)的絕緣，迪慶(qing)共箱封(feng)閉母(mu)線(xian)槽(cao)，不小于20MΩ。施(shi)工現場(chang)應保持清潔，盡量減少現場(chang)擱置時間(jian)(jian)。做好(hao)防水、防潮工作(zuo)。

母(mu)(mu)線(xian)(xian)完全差(cha)(cha)動(dong)(dong)(dong)保護是將母(mu)(mu)線(xian)(xian)上所有的(de)(de)(de)各連接(jie)元件(jian)(jian)的(de)(de)(de)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)互(hu)感(gan)器(qi)按(an)同名相(xiang)、同極性(xing)連接(jie)到差(cha)(cha)動(dong)(dong)(dong)回(hui)(hui)路(lu)(lu)(lu)，電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)互(hu)感(gan)器(qi)的(de)(de)(de)特性(xing)與變比均應相(xiang)同，若變比不(bu)能相(xiang)同時，可采用補償變流(liu)(liu)(liu)器(qi)進行補償，共箱封(feng)閉母(mu)(mu)線(xian)(xian)槽現貨批(pi)發，滿足(zu)ΣI=0。差(cha)(cha)動(dong)(dong)(dong)繼電(dian)(dian)(dian)(dian)器(qi)的(de)(de)(de)動(dong)(dong)(dong)作電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)按(an)下述條(tiao)件(jian)(jian)計算、整定，取其值(zhi)：1)、躲開外部短路(lu)(lu)(lu)時產生的(de)(de)(de)不(bu)平衡電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)；2)、躲開母(mu)(mu)線(xian)(xian)連接(jie)元件(jian)(jian)中，負荷(he)支(zhi)路(lu)(lu)(lu)的(de)(de)(de)負荷(he)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)，以防止電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)二次回(hui)(hui)路(lu)(lu)(lu)斷線(xian)(xian)時誤動(dong)(dong)(dong)。母(mu)(mu)線(xian)(xian)不(bu)完全差(cha)(cha)動(dong)(dong)(dong)保護只(zhi)需將連接(jie)于母(mu)(mu)線(xian)(xian)的(de)(de)(de)各有電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)元件(jian)(jian)上的(de)(de)(de)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)互(hu)感(gan)器(qi)，接(jie)入差(cha)(cha)動(dong)(dong)(dong)回(hui)(hui)路(lu)(lu)(lu)，在無電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)元件(jian)(jian)上的(de)(de)(de)電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)互(hu)感(gan)器(qi)不(bu)接(jie)入差(cha)(cha)動(dong)(dong)(dong)回(hui)(hui)路(lu)(lu)(lu)。因(yin)此在無電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)元件(jian)(jian)上發生故障，它將動(dong)(dong)(dong)作。電(dian)(dian)(dian)(dian)流(liu)(liu)(liu)互(hu)感(gan)器(qi)不(bu)接(jie)入差(cha)(cha)動(dong)(dong)(dong)回(hui)(hui)路(lu)(lu)(lu)的(de)(de)(de)無電(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)元件(jian)(jian)是電(dian)(dian)(dian)(dian)抗器(qi)或(huo)變壓器(qi)。

封閉(bi)(bi)(bi)式(shi)(shi)母(mu)線(xian)(xian)(xian)(xian)槽(cao)(cao)(cao)簡稱母(mu)線(xian)(xian)(xian)(xian)槽(cao)(cao)(cao)。封閉(bi)(bi)(bi)式(shi)(shi)母(mu)線(xian)(xian)(xian)(xian)槽(cao)(cao)(cao)和母(mu)線(xian)(xian)(xian)(xian)槽(cao)(cao)(cao)指的是同(tong)一個東西。封閉(bi)(bi)(bi)式(shi)(shi)母(mu)線(xian)(xian)(xian)(xian)槽(cao)(cao)(cao)是由金屬板(ban)（鋼(gang)板(ban)或(huo)鋁板(ban)）作為保護殼(ke)(ke)(ke)、導電條(tiao)、絕緣(yuan)(yuan)材料及相關附(fu)件(jian)組成(cheng)的母(mu)線(xian)(xian)(xian)(xian)系(xi)統。可制成(cheng)間隔插入(ru)式(shi)(shi)接(jie)線(xian)(xian)(xian)(xian)盒的插入(ru)式(shi)(shi)封閉(bi)(bi)(bi)母(mu)線(xian)(xian)(xian)(xian)，也可制成(cheng)中間不帶接(jie)線(xian)(xian)(xian)(xian)盒的饋電式(shi)(shi)封閉(bi)(bi)(bi)母(mu)線(xian)(xian)(xian)(xian)。封閉(bi)(bi)(bi)式(shi)(shi)母(mu)線(xian)(xian)(xian)(xian)槽(cao)(cao)(cao)（母(mu)線(xian)(xian)(xian)(xian)槽(cao)(cao)(cao)）按(an)絕緣(yuan)(yuan)方式(shi)(shi)可分(fen)為空氣插入(ru)式(shi)(shi)母(mu)線(xian)(xian)(xian)(xian)槽(cao)(cao)(cao)、密(mi)(mi)絕緣(yuan)(yuan)插入(ru)式(shi)(shi)母(mu)線(xian)(xian)(xian)(xian)槽(cao)(cao)(cao)和高(gao)強度插入(ru)式(shi)(shi)母(mu)線(xian)(xian)(xian)(xian)槽(cao)(cao)(cao)三種。按(an)其結構和用途分(fen)為致密(mi)(mi)絕緣(yuan)(yuan)、空氣絕緣(yuan)(yuan)、空氣附(fu)加絕緣(yuan)(yuan)、耐火、樹脂(zhi)絕緣(yuan)(yuan)和滑觸(chu)式(shi)(shi)母(mu)線(xian)(xian)(xian)(xian)槽(cao)(cao)(cao)；按(an)外殼(ke)(ke)(ke)材料分(fen)為鋼(gang)殼(ke)(ke)(ke)、鋁合金殼(ke)(ke)(ke)和鋼(gang)鋁混合殼(ke)(ke)(ke)母(mu)線(xian)(xian)(xian)(xian)槽(cao)(cao)(cao)。

由于大樓、工(gong)廠等(deng)各種建筑(zhu)電力(li)的需要(yao)(yao)，而且這種需要(yao)(yao)有逐年增(zeng)加的趨(qu)勢，使用(yong)原(yuan)來的電路接(jie)線(xian)方式(shi)，即穿(chuan)管方式(shi)，施(shi)工(gong)時(shi)帶來許多困難，而且，當要(yao)(yao)變(bian)更配電系統時(shi)，要(yao)(yao)使其變(bian)簡單一些幾乎是不(bu)可(ke)能的，然而，如果(guo)采(cai)用(yong)母線(xian)槽(cao)的話(hua)，非常容易就可(ke)以達到目的，另外還可(ke)使建筑(zhu)物變(bian)得(de)更加美觀。