關于臨時建筑配電箱分類和功能說明
發布日期:2023-03-03 點擊:1274
市面上常(chang)用的配電箱(xiang)(xiang)可分為:1級(ji)配電箱(xiang)(xiang),2級(ji)配電箱(xiang)(xiang)和3級(ji)配電箱(xiang)(xiang)。
根據(ju)供(gong)電(dian)安全的四個要求:安全、可靠、選擇(ze)性(xing)和靈敏度,3級(ji)配電(dian)箱的漏(lou)(lou)電(dian)開關(guan)大(da)于2級(ji)漏(lou)(lou)電(dian)開關(guan)的保護(hu)開關(guan),違反了(le)選擇(ze)性(xing)要求,絕對(dui)不(bu)合理。
如(ru)果(guo)出現故障,需要(yao)切(qie)斷電(dian)(dian)源(yuan),應先(xian)進行3級(ji)配(pei)電(dian)(dian)箱(xiang)跳閘(zha),2級(ji)配(pei)電(dian)(dian)箱(xiang)內(nei)的漏電(dian)(dian)開關不(bu)能先(xian)跳閘(zha)。現有規格為(wei)三(san)級(ji)電(dian)(dian)源(yuan)和二級(ji)保(bao)(bao)護(hu),即主箱(xiang)、副(fu)箱(xiang)和工作(zuo)(zuo)(zuo)(zuo)箱(xiang)。主箱(xiang)設漏電(dian)(dian)保(bao)(bao)護(hu),工作(zuo)(zuo)(zuo)(zuo)箱(xiang)設防腐保(bao)(bao)護(hu),副(fu)箱(xiang)不(bu)設漏電(dian)(dian)保(bao)(bao)護(hu)。帶(dai)漏電(dian)(dian)保(bao)(bao)護(hu)的工作(zuo)(zuo)(zuo)(zuo)箱(xiang)漏電(dian)(dian)動作(zuo)(zuo)(zuo)(zuo)電(dian)(dian)流(liu)為(wei)15mA,總(zong)箱(xiang)漏電(dian)(dian)動作(zuo)(zuo)(zuo)(zuo)電(dian)(dian)流(liu)一般為(wei)30mA,如(ru)果(guo)分(fen)路太多,可用(yong)50mA,如(ru)果(guo)工作(zuo)(zuo)(zuo)(zuo)箱(xiang)漏電(dian)(dian)動作(zuo)(zuo)(zuo)(zuo)電(dian)(dian)流(liu)大于(yu)總(zong)箱(xiang)漏電(dian)(dian),工作(zuo)(zuo)(zuo)(zuo)箱(xiang)不(bu)跳閘(zha),總(zong)箱(xiang)跳閘(zha),影(ying)響其他分(fen)路工作(zuo)(zuo)(zuo)(zuo),并且找(zhao)不(bu)出哪種漏電(dian)(dian)方式。
根據(ju)供(gong)電(dian)安全的四個要求:安全、可靠、選擇(ze)性(xing)和靈敏度,3級(ji)配電(dian)箱的漏(lou)(lou)電(dian)開關(guan)大(da)于2級(ji)漏(lou)(lou)電(dian)開關(guan)的保護(hu)開關(guan),違反了(le)選擇(ze)性(xing)要求,絕對(dui)不(bu)合理。
如(ru)果(guo)出現故障,需要(yao)切(qie)斷電(dian)(dian)源(yuan),應先(xian)進行3級(ji)配(pei)電(dian)(dian)箱(xiang)跳閘(zha),2級(ji)配(pei)電(dian)(dian)箱(xiang)內(nei)的漏電(dian)(dian)開關不(bu)能先(xian)跳閘(zha)。現有規格為(wei)三(san)級(ji)電(dian)(dian)源(yuan)和二級(ji)保(bao)(bao)護(hu),即主箱(xiang)、副(fu)箱(xiang)和工作(zuo)(zuo)(zuo)(zuo)箱(xiang)。主箱(xiang)設漏電(dian)(dian)保(bao)(bao)護(hu),工作(zuo)(zuo)(zuo)(zuo)箱(xiang)設防腐保(bao)(bao)護(hu),副(fu)箱(xiang)不(bu)設漏電(dian)(dian)保(bao)(bao)護(hu)。帶(dai)漏電(dian)(dian)保(bao)(bao)護(hu)的工作(zuo)(zuo)(zuo)(zuo)箱(xiang)漏電(dian)(dian)動作(zuo)(zuo)(zuo)(zuo)電(dian)(dian)流(liu)為(wei)15mA,總(zong)箱(xiang)漏電(dian)(dian)動作(zuo)(zuo)(zuo)(zuo)電(dian)(dian)流(liu)一般為(wei)30mA,如(ru)果(guo)分(fen)路太多,可用(yong)50mA,如(ru)果(guo)工作(zuo)(zuo)(zuo)(zuo)箱(xiang)漏電(dian)(dian)動作(zuo)(zuo)(zuo)(zuo)電(dian)(dian)流(liu)大于(yu)總(zong)箱(xiang)漏電(dian)(dian),工作(zuo)(zuo)(zuo)(zuo)箱(xiang)不(bu)跳閘(zha),總(zong)箱(xiang)跳閘(zha),影(ying)響其他分(fen)路工作(zuo)(zuo)(zuo)(zuo),并且找(zhao)不(bu)出哪種漏電(dian)(dian)方式。