安裝電氣火災(zai)監測系統時(shi)的注意事項和規范:
1.安(an)裝電(dian)氣火(huo)災監測系統時,應(ying)(ying)區(qu)分(fen)電(dian)氣火(huo)災探測器(qi)監測的路數(shu)、剩余電(dian)流互感(gan)器(qi)和溫度傳感(gan)器(qi)對應(ying)(ying)的接線(xian)。
2.每個(ge)電路(lu)的電氣火災(zai)探測器數量不得超過63個(ge)。
3.接(jie)(jie)線(xian)(xian)時,應(ying)按(an)電氣(qi)火(huo)(huo)(huo)災監測(ce)(ce)探(tan)測(ce)(ce)器(qi)標記(ji)的接(jie)(jie)線(xian)(xian)標志正確接(jie)(jie)線(xian)(xian),不得反接(jie)(jie)。特(te)別(bie)是通(tong)信(xin)線(xian)(xian)將(jiang)(jiang)所(suo)有電氣(qi)火(huo)(huo)(huo)災探(tan)測(ce)(ce)器(qi)連(lian)(lian)接(jie)(jie)起來,將(jiang)(jiang)總線(xian)(xian)引至控制中心(xin),連(lian)(lian)接(jie)(jie)到電氣(qi)火(huo)(huo)(huo)災監測(ce)(ce)設(she)備上。通(tong)信(xin)線(xian)(xian)A.B線(xian)(xian)需(xu)要區分。所(suo)有電氣(qi)火(huo)(huo)(huo)災探(tan)測(ce)(ce)器(qi)的A線(xian)(xian)接(jie)(jie)下(xia)一個電氣(qi)火(huo)(huo)(huo)災探(tan)測(ce)(ce)器(qi)A線(xian)(xian),B線(xian)(xian)下(xia)一個電氣(qi)火(huo)(huo)(huo)災探(tan)測(ce)(ce)器(qi)B線(xian)(xian)。
4.安裝剩余(yu)(yu)電(dian)(dian)流互(hu)(hu)感器(qi)時,必須(xu)嚴格區(qu)分N線(xian)和(he)PE線(xian)。3P四線(xian)或(huo)(huo)4P四線(xian)N線(xian)應通(tong)過(guo)電(dian)(dian)氣(qi)火災監控系(xi)統(tong)的(de)剩余(yu)(yu)電(dian)(dian)流互(hu)(hu)感器(qi)。通(tong)過(guo)電(dian)(dian)氣(qi)火災報警系(xi)統(tong)剩余(yu)(yu)電(dian)(dian)流互(hu)(hu)感器(qi)的(de)N線(xian)不(bu)得作為PE線(xian),設備暴露時不(bu)得重復接(jie)地或(huo)(huo)接(jie)近導(dao)體。PE線(xian)不(bu)得連接(jie)到剩余(yu)(yu)的(de)電(dian)(dian)流保護裝置。
5.剩(sheng)余電(dian)流(liu)互感器(qi)應放(fang)置在塑(su)殼斷路器(qi)下(xia)端(duan)出線(xian)處。安裝不方便時,可考慮(lv)安裝開口(kou)(kou)式剩(sheng)余電(dian)流(liu)互感器(qi)或塑(su)殼斷路器(qi)入口(kou)(kou)端(duan)。
6.配電(dian)柜內安(an)裝電(dian)氣(qi)(qi)火(huo)災(zai)監(jian)測(ce)系(xi)(xi)統(tong)剩余電(dian)流互感器,應(ying)特別注(zhu)意施工(gong)安(an)全,斷(duan)電(dian)時施工(gong),強弱電(dian)分開接線(xian),防止接線(xian)錯誤或接線(xian),導(dao)致強電(dian)串入電(dian)氣(qi)(qi)火(huo)災(zai)監(jian)測(ce)系(xi)(xi)統(tong)電(dian)路,燒毀整個(ge)電(dian)氣(qi)(qi)火(huo)災(zai)監(jian)測(ce)系(xi)(xi)統(tong)。
7.改造工程一(yi)般應將電(dian)氣火災(zai)監測(ce)探測(ce)器(qi)置(zhi)于塑(su)殼斷路(lu)器(qi)下端出線(xian)處,安裝不(bu)方便(bian)時(shi),也可考慮(lv)安裝在塑(su)殼斷路(lu)器(qi)入(ru)線(xian)端。
8.根(gen)據(ju)GB13955標準5.7.3和5.7.5的(de)(de)要求,設(she)(she)置(zhi)合適的(de)(de)泄漏(lou)電流(liu)報警閥(fa)值(zhi)(zhi)(zhi)(zhi)。通常(chang),報警設(she)(she)置(zhi)值(zhi)(zhi)(zhi)(zhi)不(bu)得小于(yu)線(xian)路和設(she)(she)備正常(chang)運(yun)行(xing)泄漏(lou)電流(liu)值(zhi)(zhi)(zhi)(zhi)的(de)(de)兩倍,但不(bu)得超過999mA。溫(wen)度報警值(zhi)(zhi)(zhi)(zhi)應設(she)(she)置(zhi)在40-140度之(zhi)間,但應低于(yu)電纜的(de)(de)耐熱(re)值(zhi)(zhi)(zhi)(zhi)。
9.在電(dian)(dian)氣(qi)火災(zai)監(jian)測探測器和(he)電(dian)(dian)氣(qi)火災(zai)監(jian)測設備(bei)通電(dian)(dian)前(qian),檢查所有連(lian)接線是(shi)否對地短路。
10.電(dian)(dian)氣火災監測探(tan)測器與剩余(yu)電(dian)(dian)流傳(chuan)感器或溫度傳(chuan)感器的安裝距離不得超過10米(mi)。
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