施工現(xiàn)場臨時(shí)用電配電箱、開關(guān)箱應(yīng)達(dá)到如下要求
日期:2013-05-13點(diǎn)擊量:16722
一、 應(yīng)采用具有“CCC”認(rèn)證(GB7251.4),即ACS認(rèn)證的產(chǎn)品;
二、 箱體結(jié)構(gòu)要求:
1、 防護(hù)等級(jí)應(yīng)達(dá)到IP44,電流表、電壓表等應(yīng)做在箱內(nèi),不得做在箱門上;裸露帶電體防護(hù)等級(jí)應(yīng)達(dá)到IP2,即人的手指不得碰到帶電體。
2、 分配電箱、開關(guān)箱應(yīng)采用整張安裝板;PE排應(yīng)在安裝板上,元件間應(yīng)由絕緣導(dǎo)線連接,不得采用銅排連接。
3、 所有門及活動(dòng)式安裝板,必須由編織的軟銅線連接到箱體;地腳螺栓到PE排應(yīng)有黃綠雙色線連接。
4、 總配電箱、分配電箱鋼板厚度應(yīng)大于1.5mm,開關(guān)箱鋼板厚度應(yīng)大于1.2mm,所有元件參數(shù)值應(yīng)是固定值,不得手寫、點(diǎn)點(diǎn)或用不干膠粘貼等。
5、 配電箱、開關(guān)箱必須有標(biāo)牌,注明日期,并將產(chǎn)品數(shù)量標(biāo)注在“CCC”認(rèn)證背面,加蓋公章。
6、 違規(guī)的配電箱生產(chǎn)廠家,將錄入不良記錄數(shù)據(jù)庫,并在網(wǎng)上公布。
三、 斷路器要求:
1、 應(yīng)采用DZ20T或KDM1系列;
2、 作為隔離開關(guān),應(yīng)能斷開電源所有極,采用3P或4P元件,取消N線排,所有N線必須經(jīng)過斷路器觸點(diǎn)饋出。
3、 參數(shù)選擇應(yīng)按規(guī)范要求,≦7.5Kw設(shè)備開關(guān)箱應(yīng)選用≦20A開關(guān)。
4、 不使用N線的設(shè)備必須使用3P開關(guān),N線不得引入配電箱、開關(guān)箱內(nèi)。
5、 DZ20T斷路器不得小于100A殼架;不得采用非DZ20T的改型產(chǎn)品。
四、 漏電保護(hù)器或漏電斷路器要求如下:
1、 應(yīng)采用DZ20LET或KDM1系列;
2、 總配電箱漏電保護(hù)器應(yīng)選用150mA、0.2s;
3、 開關(guān)箱漏電保護(hù)器應(yīng)選用30mA、0.1s,潮濕環(huán)境下15mA、0.1s;
4、 應(yīng)采用所有極采樣的漏電保護(hù)器,即電源側(cè)撤掉任何一條電源,漏電保護(hù)器仍能正常使用;動(dòng)力設(shè)備的開關(guān)箱內(nèi)漏電保護(hù)器應(yīng)具有缺相保護(hù)功能。
5、 所使用元器件必須有CCC認(rèn)證,必須是DZ20T或KDM1,而且已在安全站備案。
6、 嚴(yán)格按照規(guī)范JGJ46-2005和JGJ59-2011執(zhí)行。
7、 DZ20LET帶漏電保護(hù)斷路器不得小于160A殼架,不得采用非DZ20T的改型產(chǎn)品。
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