本次(ci)介紹的(de)低(di)(di)(di)壓開關(guan)(guan)柜(ju)(ju)(ju)(ju)適用(yong)于交(jiao)流400伏的(de)一個系統。低(di)(di)(di)壓開關(guan)(guan)柜(ju)(ju)(ju)(ju)主要是由柜(ju)(ju)(ju)(ju)體(ti)你、一次(ci)元器(qi)件、二次(ci)元器(qi)件、母排等(deng)組成；開關(guan)(guan)柜(ju)(ju)(ju)(ju)的(de)寬度一般(ban)有(you)600cm、800cm、1m、1.2m、，深(shen)度一般(ban)有(you)600cm、800cm、1m，高度一般(ban)為(wei)2.2m。一套完整的(de)開關(guan)(guan)柜(ju)(ju)(ju)(ju)系統，一般(ban)有(you)進線(xian)柜(ju)(ju)(ju)(ju)、無功補償柜(ju)(ju)(ju)(ju)、饋(kui)線(xian)柜(ju)(ju)(ju)(ju)雙電源(yuan)柜(ju)(ju)(ju)(ju)等(deng)組成。打(da)開門我們會(hui)看到(dao)低(di)(di)(di)壓框(kuang)架斷路器(qi)，左邊是二次(ci)端子(zi)；關(guan)(guan)上(shang)門，儀表門上(shang)依次(ci)有(you)數顯表、指(zhi)示燈、按鈕；進線(xian)柜(ju)(ju)(ju)(ju)后面會(hui)看到(dao)計量(liang)用(yong)的(de)電流互感器(qi)、測(ce)量(liang)用(yong)電流互感器(qi)、進線(xian)柜(ju)(ju)(ju)(ju)的(de)浪(lang)涌(yong)保護器(qi)。低(di)(di)(di)壓開關(guan)(guan)柜(ju)(ju)(ju)(ju)可以有(you)效地(di)減少電氣(qi)設備的(de)能耗和損耗。湖北消防低(di)(di)(di)壓開關(guan)(guan)柜(ju)(ju)(ju)(ju)

MNS用(yong)途，MNS型(xing)(xing)低(di)(di)壓(ya)抽(chou)出式(shi)成(cheng)套開(kai)關(guan)(guan)設備（以下(xia)簡稱(cheng)開(kai)關(guan)(guan)柜(ju)(ju)(ju)）為適(shi)應電(dian)力(li)工業發(fa)展的(de)(de)需(xu)求(qiu)，參(can)考國(guo)外MNS系列低(di)(di)壓(ya)開(kai)關(guan)(guan)柜(ju)(ju)(ju)設計并加以改進開(kai)發(fa)的(de)(de)高級(ji)型(xing)(xing)低(di)(di)壓(ya)開(kai)關(guan)(guan)柜(ju)(ju)(ju)，該產品符合國(guo)家標準(zhun)GB7251、VDE660和ZBK36001-89《低(di)(di)壓(ya)抽(chou)出式(shi)成(cheng)套開(kai)關(guan)(guan)設備》、國(guo)際標準(zhun)IEC439規(gui)定(ding)MNS型(xing)(xing)低(di)(di)壓(ya)開(kai)關(guan)(guan)柜(ju)(ju)(ju)適(shi)應各種(zhong)供電(dian)、配(pei)電(dian)的(de)(de)需(xu)要(yao)(yao)(yao)，能(neng)普遍用(yong)于發(fa)電(dian)廠、變電(dian)站(zhan)、工礦企業、大樓賓館(guan)、市政建(jian)設等(deng)(deng)各種(zhong)低(di)(di)壓(ya)配(pei)電(dian)系統。采用(yong)標準(zhun)模塊(kuai)設計:分別(bie)可(ke)(ke)組成(cheng)保護、操作、轉換、控制、調節、測(ce)定(ding)、指示(shi)等(deng)(deng)標準(zhun)單元(yuan)，可(ke)(ke)以根據(ju)要(yao)(yao)(yao)求(qiu)任意組裝。柜(ju)(ju)(ju)體可(ke)(ke)按工作環(huan)境的(de)(de)不同要(yao)(yao)(yao)求(qiu)選用(yong)相誚的(de)(de)防護等(deng)(deng)級(ji)。山西(xi)低(di)(di)壓(ya)配(pei)電(dian)箱價(jia)格(ge)低(di)(di)壓(ya)開(kai)關(guan)(guan)柜(ju)(ju)(ju)可(ke)(ke)以有效地(di)減少電(dian)氣設備的(de)(de)故(gu)障停機時間。

電(dian)(dian)力工業(ye)部(bu)(bu)(bu)、機械(xie)工業(ye)部(bu)(bu)(bu)聯(lian)合以(yi)(yi)安(an)生用[1997]01號(hao)、機重[1997]01號(hao)文下發了《關于GCS型低壓抽(chou)(chou)出(chu)(chu)式(shi)(shi)開關柜(ju)推廣應用有(you)關問題(ti)的(de)(de)通知》。GCS型低壓抽(chou)(chou)出(chu)(chu)開關柜(ju)已(yi)被(bei)電(dian)(dian)力用戶普遍選用。GCS型低壓抽(chou)(chou)出(chu)(chu)式(shi)(shi)開關柜(ju)的(de)(de)抽(chou)(chou)屜單(dan)(dan)元設(she)有(you)完善機械(xie)連鎖裝(zhuang)置，確(que)保操作人員的(de)(de)人身安(an)全；MCC柜(ju)單(dan)(dan)柜(ju)的(de)(de)回路(lu)數較(jiao)多至22回，充分考慮了大單(dan)(dan)機容(rong)量(liang)(liang)發電(dian)(dian)廠，石化系統等行業(ye)自動(dong)化電(dian)(dian)動(dong)門（機）群的(de)(de)需要(yao)；裝(zhuang)置與外部(bu)(bu)(bu)電(dian)(dian)纜的(de)(de)連接(jie)在電(dian)(dian)纜隔(ge)室中完成，電(dian)(dian)纜可以(yi)(yi)上下進出(chu)(chu)。零序(xu)電(dian)(dian)流互感器(qi)置電(dian)(dian)纜隔(ge)室內，使安(an)裝(zhuang)維修方便；抽(chou)(chou)屜單(dan)(dan)元有(you)足(zu)夠數量(liang)(liang)的(de)(de)二次接(jie)插件（1單(dan)(dan)元及以(yi)(yi)上為(wei)32對(dui)，1/2單(dan)(dan)元為(wei)20對(dui)），可滿足(zu)計(ji)算機接(jie)口和自控回路(lu)對(dui)接(jie)點數量(liang)(liang)的(de)(de)要(yao)求。

MNS型(xing)(xing)低(di)壓(ya)抽出式開(kai)(kai)(kai)關(guan)(guan)柜(ju)，1.用途MNS型(xing)(xing)低(di)壓(ya)抽出式成(cheng)套開(kai)(kai)(kai)關(guan)(guan)設備(bei)(bei)（下稱MNS柜(ju)）是為(wei)(wei)適應(ying)(ying)電(dian)(dian)力工業發(fa)展的(de)(de)需求(qiu)(qiu)，參考國外MNS系列低(di)壓(ya)開(kai)(kai)(kai)關(guan)(guan)柜(ju)設計(ji)并加(jia)(jia)以改(gai)進(jin)而開(kai)(kai)(kai)發(fa)的(de)(de)高(gao)級(ji)型(xing)(xing)低(di)壓(ya)開(kai)(kai)(kai)關(guan)(guan)柜(ju)。能(neng)(neng)(neng)適應(ying)(ying)各(ge)(ge)種供(gong)電(dian)(dian)、配(pei)電(dian)(dian)的(de)(de)需要，可(ke)(ke)普遍應(ying)(ying)用于發(fa)電(dian)(dian)廠、變電(dian)(dian)站、市政建設等(deng)場所。2結(jie)構(gou)(gou)特點：①MNS柜(ju)的(de)(de)框架(jia)為(wei)(wei)組(zu)(zu)(zu)合式結(jie)構(gou)(gou)，基本骨架(jia)由C型(xing)(xing)鋼材組(zu)(zu)(zu)裝而成(cheng)；②MNS柜(ju)的(de)(de)每一個柜(ju)體分隔(ge)為(wei)(wei)3個室，即水平(ping)母線(xian)室、抽屜小室、電(dian)(dian)纜室。③MNS柜(ju)的(de)(de)結(jie)構(gou)(gou)設計(ji)可(ke)(ke)滿足上進(jin)上出、下進(jin)下出等(deng)各(ge)(ge)種進(jin)出線(xian)方(fang)案要求(qiu)(qiu)。④結(jie)構(gou)(gou)件通用性強(qiang)、組(zu)(zu)(zu)裝靈(ling)活，以E=25mm為(wei)(wei)模數，結(jie)構(gou)(gou)及抽出式單元可(ke)(ke)以任意(yi)組(zu)(zu)(zu)合，以滿足系統設計(ji)的(de)(de)需要。⑤各(ge)(ge)種大(da)小抽屜的(de)(de)機(ji)械聯鎖機(ji)構(gou)(gou)符合標(biao)準(zhun)規定(ding)，有連(lian)接、試驗、分離3個明(ming)顯的(de)(de)位置，安全(quan)可(ke)(ke)靠。⑥采用標(biao)準(zhun)模塊化設計(ji)：分別(bie)可(ke)(ke)組(zu)(zu)(zu)成(cheng)保(bao)護、操作(zuo)、轉換、控(kong)制、調節、測定(ding)、指示等(deng)標(biao)準(zhun)單元，可(ke)(ke)以根據(ju)要求(qiu)(qiu)任意(yi)組(zu)(zu)(zu)裝。⑦母線(xian)用強(qiang)度(du)高(gao)阻(zu)燃型(xing)(xing)、高(gao)絕緣強(qiang)度(du)的(de)(de)塑料功能(neng)(neng)(neng)板(ban)保(bao)護，具有抗(kang)故障(zhang)電(dian)(dian)弧性能(neng)(neng)(neng)，使(shi)運行維修更加(jia)(jia)安全(quan)可(ke)(ke)靠。⑧柜(ju)體可(ke)(ke)按(an)工作(zuo)環境的(de)(de)不同要求(qiu)(qiu)選(xuan)用相應(ying)(ying)的(de)(de)防護等(deng)級(ji)。低(di)壓(ya)開(kai)(kai)(kai)關(guan)(guan)柜(ju)能(neng)(neng)(neng)夠(gou)實現電(dian)(dian)力系統的(de)(de)快速恢(hui)復和備(bei)(bei)份(fen)供(gong)電(dian)(dian)。

術語解釋(shi)：電(dian)(dian)(dian)(dian)(dian)(dian)氣(qi)間(jian)(jian)隙：在(zai)(zai)(zai)兩個(ge)導(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)零(ling)部(bu)件(jian)之間(jian)(jian)或導(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)零(ling)部(bu)件(jian)與設(she)備防護界面之間(jian)(jian)測得的(de)(de)(de)較(jiao)短空間(jian)(jian)距(ju)離。即(ji)在(zai)(zai)(zai)保(bao)證(zheng)電(dian)(dian)(dian)(dian)(dian)(dian)氣(qi)性能穩(wen)定和(he)安(an)全的(de)(de)(de)情況下，通過空氣(qi)能實現(xian)絕緣(yuan)(yuan)(yuan)的(de)(de)(de)較(jiao)短距(ju)離。爬(pa)電(dian)(dian)(dian)(dian)(dian)(dian)距(ju)離：即(ji)在(zai)(zai)(zai)不同的(de)(de)(de)使用情況下，由于導(dao)(dao)體周圍的(de)(de)(de)絕緣(yuan)(yuan)(yuan)材(cai)料(liao)被(bei)電(dian)(dian)(dian)(dian)(dian)(dian)極化(hua)(hua)，導(dao)(dao)致絕緣(yuan)(yuan)(yuan)材(cai)料(liao)呈現(xian)帶電(dian)(dian)(dian)(dian)(dian)(dian)現(xian)象(xiang)。此帶電(dian)(dian)(dian)(dian)(dian)(dian)區（導(dao)(dao)體為(wei)圓形時(shi)，帶電(dian)(dian)(dian)(dian)(dian)(dian)區為(wei)環形）的(de)(de)(de)半徑(jing)，即(ji)為(wei)爬(pa)電(dian)(dian)(dian)(dian)(dian)(dian)距(ju)離；在(zai)(zai)(zai)絕緣(yuan)(yuan)(yuan)材(cai)料(liao)表(biao)面會形成(cheng)泄(xie)漏電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)路(lu)徑(jing)。若(ruo)這些(xie)泄(xie)漏電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)路(lu)徑(jing)構成(cheng)一條導(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)通路(lu)，則出現(xian)表(biao)面閃絡或擊穿(chuan)現(xian)象(xiang)。絕緣(yuan)(yuan)(yuan)材(cai)料(liao)的(de)(de)(de)這種變化(hua)(hua)需要一定的(de)(de)(de)時(shi)間(jian)(jian)，它是由長時(shi)間(jian)(jian)加(jia)在(zai)(zai)(zai)器件(jian)上的(de)(de)(de)工作(zuo)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)所引(yin)起的(de)(de)(de)，器件(jian)周圍環境的(de)(de)(de)污染能加(jia)速這一變化(hua)(hua)。低(di)壓(ya)開關(guan)(guan)柜(ju)可(ke)以提供電(dian)(dian)(dian)(dian)(dian)(dian)氣(qi)設(she)備的(de)(de)(de)遠(yuan)程監控和(he)控制功能。江蘇照(zhao)明低(di)壓(ya)開關(guan)(guan)柜(ju)

低壓(ya)開關(guan)柜可以有效(xiao)地保護電氣設備免受(shou)過(guo)載和短路(lu)的損害。湖北消防低壓(ya)開關(guan)柜

成(cheng)套(tao)基礎(chu)知識：1、什么是(shi)高(gao)壓(ya)(ya)隔離開關(guan)(guan)？它(ta)(ta)有(you)何用途？它(ta)(ta)是(shi)一種(zhong)沒有(you)滅(mie)弧裝置的(de)開關(guan)(guan)設備，一般只(zhi)用來關(guan)(guan)合(he)(he)和(he)(he)(he)開斷(duan)(duan)有(you)電(dian)壓(ya)(ya)無負荷的(de)線(xian)路(lu)。主要用在(zai)斷(duan)(duan)路(lu)器分閘(zha)后建立可靠的(de)絕(jue)緣(yuan)間(jian)隙(xi)，將(jiang)被檢修(xiu)線(xian)路(lu)和(he)(he)(he)調和(he)(he)(he)與電(dian)源(yuan)隔開，根據運行需要換(huan)接(jie)線(xian)路(lu)，以及開斷(duan)(duan)和(he)(he)(he)關(guan)(guan)合(he)(he)短線(xian)路(lu)的(de)充電(dian)電(dian)流(liu)(liu)和(he)(he)(he)小(xiao)容量的(de)空載變(bian)壓(ya)(ya)器的(de)勵(li)磁電(dian)流(liu)(liu)。2、什么是(shi)接(jie)地(di)開關(guan)(guan)？它(ta)(ta)有(you)何用途？接(jie)地(di)開關(guan)(guan)就是(shi)用于(yu)將(jiang)回路(lu)接(jie)地(di)的(de)一種(zhong)機械式開關(guan)(guan)裝置。它(ta)(ta)通常裝在(zai)降(jiang)壓(ya)(ya)變(bian)壓(ya)(ya)器的(de)高(gao)壓(ya)(ya)側。當輸(shu)電(dian)線(xian)路(lu)向只(zhi)有(you)一個變(bian)壓(ya)(ya)器的(de)終端(duan)電(dian)站(zhan)供電(dian)時，在(zai)受電(dian)端(duan)發(fa)生故障的(de)情況下，接(jie)地(di)開關(guan)(guan)應(ying)關(guan)(guan)合(he)(he)，造成(cheng)人(ren)為接(jie)地(di)短路(lu)，迫(po)使送(song)電(dian)端(duan)分閘(zha)，切斷(duan)(duan)故障。湖(hu)北消防低壓(ya)(ya)開關(guan)(guan)柜

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