對于配電(dian)(dian)變壓(ya)器(qi)容量(liang)在100kV·A及以(yi)上的(de)配電(dian)(dian)箱(xiang)體(ti)(ti)，在箱(xiang)內散熱窗靠側(ce)(ce)壁處，應考慮到安(an)裝溫(wen)控繼電(dian)(dian)器(qi)（JU-3型或(huo)JU-4超小型溫(wen)度繼電(dian)(dian)器(qi)）和(he)軸流(liu)風機，安(an)裝在控制(zhi)電(dian)(dian)器(qi)板(ban)上方(fang)左側(ce)(ce)面的(de)箱(xiang)體(ti)(ti)上，以(yi)便使箱(xiang)內溫(wen)度達到一定值時（如(ru)40℃）能自動啟動排氣扇，強行排出熱量(liang)以(yi)使箱(xiang)體(ti)(ti)散熱。

配電變壓器的低壓側總過流保護熔斷器的額定電流，開關柜應大于配電變壓器的低壓側額定電流，生產開關柜一般取(qu)額(e)定電(dian)(dian)流(liu)的1.5倍，熔(rong)體(ti)的額(e)定電(dian)(dian)流(liu)應(ying)按變(bian)壓器允(yun)許的過負(fu)荷(he)倍數(shu)和熔(rong)斷(duan)器特性確定。出線(xian)回路過流(liu)保(bao)(bao)護熔(rong)斷(duan)器的熔(rong)體(ti)額(e)定電(dian)(dian)流(liu)，不應(ying)大于總過流(liu)保(bao)(bao)護熔(rong)斷(duan)器的額(e)定電(dian)(dian)流(liu)，熔(rong)體(ti)的額(e)定電(dian)(dian)流(liu)按回路正常最大負(fu)荷(he)電(dian)(dian)流(liu)選擇(ze)，并應(ying)躲過正常的尖峰電(dian)(dian)流(liu)。

必(bi)須選(xuan)用符(fu)合(he)(he)GB 6829《剩余(yu)電(dian)(dian)流(liu)動(dong)作保(bao)(bao)護(hu)器(qi)的(de)一般要(yao)(yao)求》標(biao)準(zhun)、并經(jing)中國電(dian)(dian)工產(chan)品認(ren)證委員會認(ren)證合(he)(he)格的(de)產(chan)品。可選(xuan)用類似LJM（J）系(xi)列節(jie)電(dian)(dian)型、且是低靈敏(min)度的(de)延時(shi)型保(bao)(bao)護(hu)器(qi)。保(bao)(bao)護(hu)器(qi)裝(zhuang)置(zhi)的(de)方(fang)式要(yao)(yao)符(fu)合(he)(he)國家GB13955-2005《剩余(yu)電(dian)(dian)流(liu)動(dong)作保(bao)(bao)護(hu)裝(zhuang)置(zhi)的(de)安裝(zhuang)和運行》標(biao)準(zhun)。漏(lou)電(dian)(dian)保(bao)(bao)護(hu)器(qi)的(de)分斷時(shi)間，當漏(lou)電(dian)(dian)電(dian)(dian)流(liu)為額定漏(lou)電(dian)(dian)電(dian)(dian)流(liu)時(shi)，其(qi)動(dong)作時(shi)間不應大于(yu)0.s。

1.主(zhu)母線(xian)最大(da)額(e)(e)定電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流:主(zhu)母線(xian)最大(da)能夠承載的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流的(de)(de)額(e)(e)定值(zhi)。2.額(e)(e)定短(duan)(duan)時耐受(shou)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流:由(you)(you)生(sheng)產(chan)廠家給出(chu)的(de)(de),成套設備(bei)中(zhong)某條電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)在國家標(biao)準GB7251.1-2005中(zhong)8.2.3規定的(de)(de)試驗條件(jian)下(xia)能安全(quan)(quan)承載的(de)(de)短(duan)(duan)時耐受(shou)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流方均根值(zhi)。3.峰(feng)值(zhi)短(duan)(duan)時耐受(shou)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流:在規定試驗條件(jian)下(xia),生(sheng)產(chan)廠家規定此電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)能夠圓(yuan)滿地(di)承受(shou)的(de)(de)峰(feng)值(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流。4.外(wai)殼(ke)防護等級(ji):IEC60529-1989標(biao)準由(you)(you)成套設備(bei)提供(gong)的(de)(de)防止觸及帶(dai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)部(bu)件(jian),以(yi)及外(wai)來固體的(de)(de)侵入(ru)和(he)液體的(de)(de)進入(ru)的(de)(de)等級(ji)。具體等級(ji)劃分詳見IEC60529標(biao)準。5.內部(bu)分隔(ge)(ge)方式(shi):根據IEC60529-1989標(biao)準,為保護人身安全(quan)(quan),將開(kai)關柜(ju)獨(du)立劃分成幾(ji)個隔(ge)(ge)室的(de)(de)不同方式(shi)。不同型號的(de)(de)配(pei)(pei)(pei)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)柜(ju)之間的(de)(de)技術(shu)(shu)參數都有很大(da)不同,而(er)進口配(pei)(pei)(pei)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)柜(ju)的(de)(de)技術(shu)(shu)參數基本都優于國產(chan)配(pei)(pei)(pei)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)柜(ju),但并(bing)不能認為進口配(pei)(pei)(pei)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)柜(ju)就一(yi)定比國產(chan)配(pei)(pei)(pei)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)柜(ju)好(hao)。

控(kong)(kong)制(zhi)柜主要(yao)用(yong)于高(gao)層(ceng)建筑無(wu)塔供水(shui)(shui)，消防深井泵(beng)恒壓(ya)(ya)(ya)供水(shui)(shui)等根據實(shi)(shi)時用(yong)水(shui)(shui)工況需要(yao)閉(bi)環(huan)調節水(shui)(shui)泵(beng)轉(zhuan)速的(de)場合，采用(yong)知名品牌的(de)變頻器、智能(neng)控(kong)(kong)制(zhi)器、壓(ya)(ya)(ya)力(li)傳(chuan)感器及水(shui)(shui)泵(beng)組成(cheng)閉(bi)環(huan)控(kong)(kong)制(zhi)系(xi)統。多(duo)泵(beng)控(kong)(kong)制(zhi)，管網壓(ya)(ya)(ya)力(li)穩(wen)定，提高(gao)供水(shui)(shui)質量，減少(shao)二次(ci)污染，節電效率高(gao)，可實(shi)(shi)現(xian)無(wu)人(ren)值守的(de)無(wu)塔供水(shui)(shui)自動控(kong)(kong)制(zhi)系(xi)統。