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詳情內容 XL-21型(xing)低壓動力配(pei)(pei)電(dian)(dian)(dian)(dian)(dian)箱(xiang)(xiang)(xiang)(xiang)系(xi)封閉式，外殼(ke)用鋼板彎制而成，刀開關操(cao)作手柄于箱(xiang)(xiang)(xiang)(xiang)前(qian)右柱(zhu)上部，可(ke)(ke)以作為切換電(dian)(dian)(dian)(dian)(dian)源之用。配(pei)(pei)電(dian)(dian)(dian)(dian)(dian)箱(xiang)(xiang)(xiang)(xiang)前(qian)面(mian)裝(zhuang)(zhuang)有(you)一(yi)只電(dian)(dian)(dian)(dian)(dian)壓表，指示(shi)匯流母線(xian)(xian)的(de)電(dian)(dian)(dian)(dian)(dian)壓。配(pei)(pei)電(dian)(dian)(dian)(dian)(dian)箱(xiang)(xiang)(xiang)(xiang)前(qian)面(mian)有(you)門，門打開后(hou)，配(pei)(pei)電(dian)(dian)(dian)(dian)(dian)箱(xiang)(xiang)(xiang)(xiang)內(nei)全部設備敞露、便于檢修維護(hu)。本配(pei)(pei)電(dian)(dian)(dian)(dian)(dian)箱(xiang)(xiang)(xiang)(xiang)均采用國內(nei)自行設計的(de)型(xing)組(zu)件，具(ju)有(you)結構(gou)緊(jin)湊，檢修方便，線(xian)(xian)路(lu)方案可(ke)(ke)以靈活組(zu)合等特點。配(pei)(pei)電(dian)(dian)(dian)(dian)(dian)箱(xiang)(xiang)(xiang)(xiang)除(chu)裝(zhuang)(zhuang)有(you)空氣斷路(lu)器(qi)和(he)熔斷器(qi)作為短路(lu)保(bao)護(hu)外，還裝(zhuang)(zhuang)有(you)接觸器(qi)和(he)熱繼電(dian)(dian)(dian)(dian)(dian)器(qi)，箱(xiang)(xiang)(xiang)(xiang)前(qian)門可(ke)(ke)裝(zhuang)(zhuang)操(cao)作按鈕和(he)指示(shi)燈。
正常使用環境
◆環境溫度：-50℃~+40℃，且24H內的平(ping)均溫度不超過(guo)+36℃;
◆海拔高度(du)：不(bu)超過2000m;
◆相對濕(shi)度(du)(du)：在周(zhou)圍空氣濕(shi)度(du)(du)為+40℃時不超過50%;在較低(di)濕(shi)度(du)(du)下可以有較高的(de)相對濕(shi)度(du)(du)(如(ru)：+20℃時為90%)，考慮 到(dao)溫(wen)度(du)(du)的(de)變化(hua)允(yun)許產生適度(du)(du)的(de)凝霜：
◆設(she)備(bei)安裝時與垂直面的(de)傾斜(xie)度應不超過5°，設(she)備(bei)應安裝在無劇烈(lie)震動、無沖擊及無腐(fu)蝕的(de)場所。
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