浙江新黎明環保有限公司告訴你防爆配電箱引起故障的原因
2023-06-01817人瀏覽
防爆配(pei)電(dian)(dian)(dian)箱(xiang)是(shi)具有防爆性(xing)能的一類配(pei)電(dian)(dian)(dian)箱(xiang),主要用(yong)于(yu)危(wei)險(xian)性(xing)可燃氣體場(chang)所(suo)(suo)及爆炸性(xing)場(chang)所(suo)(suo)。防爆配(pei)電(dian)(dian)(dian)箱(xiang)是(shi)按(an)電(dian)(dian)(dian)氣接線(xian)要求(qiu)將開關(guan)(guan)設備(bei)、測(ce)量儀表(biao)、保(bao)護(hu)電(dian)(dian)(dian)器和輔助設備(bei)組裝在(zai)封閉或(huo)(huo)半(ban)封閉金屬(shu)柜中或(huo)(huo)屏幅(fu)上,構成低(di)壓配(pei)電(dian)(dian)(dian)裝置。正常(chang)運行(xing)時可借(jie)助手動或(huo)(huo)自動開關(guan)(guan)接通或(huo)(huo)分(fen)斷(duan)(duan)電(dian)(dian)(dian)路(lu)。故障(zhang)或(huo)(huo)不正常(chang)運行(xing)時借(jie)助保(bao)護(hu)電(dian)(dian)(dian)器切斷(duan)(duan)電(dian)(dian)(dian)路(lu)或(huo)(huo)報警。借(jie)測(ce)量儀表(biao)可顯示運行(xing)中的各種(zhong)參數,還(huan)可對某些電(dian)(dian)(dian)氣參數進(jin)行(xing)調整,對偏離正常(chang)工作(zuo)狀(zhuang)態進(jin)行(xing)提示或(huo)(huo)發出信號。常(chang)用(yong)于(yu)各發、配(pei)、變電(dian)(dian)(dian)所(suo)(suo)中。在(zai)使用(yong)過程中,很(hen)多防爆配(pei)電(dian)(dian)(dian)箱(xiang)很(hen)容(rong)易出現各種(zhong)各樣的故障(zhang)
防爆(bao)配電箱發生故障的(de)原因主要是以(yi)下幾點:
1. 環境(jing)溫度對配電(dian)(dian)箱(xiang)影響引起的故障 防爆(bao)配電(dian)(dian)箱(xiang)中的低(di)壓(ya)電(dian)(dian)器,由熔斷器、交流 接觸器 、剩余 電(dian)(dian)流 動作保護器、 電(dian)(dian)容器 及(ji)計(ji)量表等組成(cheng)。這些低(di)壓(ya)電(dian)(dian)器均(jun)按(an)GB1497《低(di)壓(ya)電(dian)(dian)器基本(ben)標(biao)準》進行設計(ji)和制造,并對它(ta)們的正常工(gong)作條(tiao)件作了相應規定(ding):周圍(wei) 空氣溫度 的上限不超(chao)過(guo)40℃;周圍(wei)空氣溫度24h的平均(jun)值不超(chao)過(guo)35℃;周圍(wei)空氣溫度的下限不低(di)于-5℃或-25℃。
2.農(nong)網改造的配電(dian)(dian)箱(xiang)在室外運(yun)行,它不但受到陽光的直接照射產生(sheng)高溫,同時運(yun)行中自(zi)身也會產生(sheng)熱量,所(suo)以(yi)在盛(sheng)夏高溫季節,箱(xiang)體內(nei)的溫度(du)將(jiang)會達(da)到60℃以(yi)上,這(zhe)時的溫度(du)大大超過了這(zhe)些電(dian)(dian)器規定的環境溫度(du),因而(er)會發生(sheng)因配電(dian)(dian)箱(xiang)內(nei)電(dian)(dian)器元(yuan)件(jian)過熱引起的故障。