隨著(zhu)社(she)會(hui)的(de)發(fa)展，人們(men)對自身財產安全的(de)需求也在提高，所以(yi)刺激了(le)配電(dian)(dian)柜產業的(de)發(fa)展，同時系(xi)統成本的(de)降低(di)也讓配電(dian)(dian)柜從工廠中(zhong)走(zou)到了(le)家庭中(zhong)，所以(yi)現在越(yue)來越(yue)多的(de)人們(men)家中(zhong)開始使(shi)用配電(dian)(dian)柜。

        大連配電箱中的低壓電器(qi)，由熔(rong)斷器(qi)、交流接觸器(qi)、剩余電流動作保護器(qi)、電容器(qi)及計量表等組成。這(zhe)些(xie)低壓電器(qi)均(jun)按(an)GB1497《低壓電器(qi)基本標準(zhun)》進行(xing)設(she)計和制造，并對它們的正常工(gong)作條件作了相應規定：周(zhou)圍(wei)空(kong)氣(qi)溫(wen)度的上限不(bu)(bu)超過(guo)40℃；周(zhou)圍(wei)空(kong)氣(qi)溫(wen)度24h的平均(jun)值不(bu)(bu)超過(guo)35℃；周(zhou)圍(wei)空(kong)氣(qi)溫(wen)度的下限不(bu)(bu)低于-5℃或-25℃。

        農網改造(zao)的(de)(de)配電(dian)(dian)(dian)箱(xiang)(xiang)在(zai)室外運(yun)行(xing)，它不但(dan)受(shou)到(dao)陽光的(de)(de)直接照射(she)產(chan)生高溫(wen)(wen)，同(tong)時(shi)運(yun)行(xing)中自身也會產(chan)生熱(re)量，所以(yi)在(zai)盛夏高溫(wen)(wen)季節，箱(xiang)(xiang)體內(nei)的(de)(de)溫(wen)(wen)度將會達(da)到(dao)60℃以(yi)上，這時(shi)的(de)(de)溫(wen)(wen)度大(da)大(da)超(chao)過了(le)這些電(dian)(dian)(dian)器規(gui)定的(de)(de)環(huan)境溫(wen)(wen)度，因而會發生因配電(dian)(dian)(dian)箱(xiang)(xiang)內(nei)電(dian)(dian)(dian)器元件(jian)過熱(re)引起的(de)(de)故(gu)障。對于配電(dian)(dian)(dian)變壓器容量在(zai)100kV·A及以(yi)上的(de)(de)配電(dian)(dian)(dian)箱(xiang)(xiang)體，在(zai)箱(xiang)(xiang)內(nei)散熱(re)窗靠側(ce)壁處，應考慮到(dao)安裝(zhuang)溫(wen)(wen)控(kong)(kong)繼電(dian)(dian)(dian)器（JU-3型(xing)或JU-4超(chao)小(xiao)型(xing)溫(wen)(wen)度繼電(dian)(dian)(dian)器）和軸流風(feng)機，安裝(zhuang)在(zai)控(kong)(kong)制電(dian)(dian)(dian)器板上方左側(ce)面的(de)(de)箱(xiang)(xiang)體上，以(yi)便使箱(xiang)(xiang)內(nei)溫(wen)(wen)度達(da)到(dao)一定值時(shi)（如(ru)40℃）能(neng)自動(dong)啟動(dong)排氣(qi)扇，強行(xing)排出熱(re)量以(yi)使箱(xiang)(xiang)體散熱(re)。

        在(zai)夏季高(gao)溫酷熱天氣里，大(da)(da)連配(pei)(pei)(pei)電(dian)(dian)箱(xiang)中低(di)壓電(dian)(dian)器(qi)在(zai)運行中自身(shen)也(ye)會產生熱量，加上(shang)外界(jie)環(huan)境(jing)溫度(du)(du)(du)(du)又高(gao)，箱(xiang)體內的溫度(du)(du)(du)(du)就會達到+60℃以上(shang)，這時(shi)的溫度(du)(du)(du)(du)大(da)(da)大(da)(da)超過(guo)了這些電(dian)(dian)器(qi)《國標》中規定(ding)的環(huan)境(jing)溫度(du)(du)(du)(du)，因而(er)會引(yin)起配(pei)(pei)(pei)電(dian)(dian)箱(xiang)的故障(zhang)。降低(di)溫度(du)(du)(du)(du)配(pei)(pei)(pei)電(dian)(dian)箱(xiang)溫度(du)(du)(du)(du)和對配(pei)(pei)(pei)電(dian)(dian)箱(xiang)進(jin)行技(ji)術改進(jin)是減低(di)配(pei)(pei)(pei)電(dian)(dian)箱(xiang)故障(zhang)的方法。