越來越多的人選擇安(an)裝電地暖供暖系統(tong),但(dan)是(shi)(shi)在寒冬來臨之際,初次開啟電地暖是(shi)(shi)可能會出現(xian)升溫(wen)慢(man)或跳閘現(xian)象,這(zhe)些(xie)情況(kuang)不免讓用戶對電地暖產生質(zhi)(zhi)疑,認為可能是(shi)(shi)產品的質(zhi)(zhi)量問題、電地暖不安(an)全等各種(zhong)猜測。這(zhe)些(xie)都只是(shi)(shi)用戶的想法(fa),當(dang)遇(yu)到這(zhe)種(zhong)情況(kuang)時,不要(yao)太擔心(xin),專家解析發熱電纜電地暖系統初次啟動出現跳閘現象原因,主要(yao)由系(xi)統過(guo)載、系(xi)統漏電(dian)(dian)、泄漏電(dian)(dian)流過(guo)大等(deng)因素造成。
(1)系統過載:
①設計上,電(dian)地暖的電(dian)功率如果超(chao)過(guo)電(dian)源開(kai)關允(yun)許的負載,通電(dian)后(hou)過(guo)載保護器就會啟(qi)動,進而(er)斷開(kai)電(dian)路(lu)系統。
②選擇的電(dian)源開關荷載不合適(shi);
③電(dian)源電(dian)壓不穩定;
④由系(xi)統啟動(dong)電(dian)流造成。其中,啟動(dong)電(dian)流只會出現(xian)在(zai)以自限溫電(dian)地暖為(wei)發(fa)熱體的(de)電(dian)地暖系(xi)統,這是由自限溫發(fa)熱材料的(de)性質(zhi)決(jue)定的(de)。
(2)電(dian)地暖(nuan)系統漏電
①電地暖絕緣強度不夠(gou);
②電地暖(nuan)接線端(duan)子、連接處密封不嚴;
③電(dian)地暖在(zai)施工過程中或(huo)在(zai)后(hou)期裝(zhuang)修過程中被破壞(huai)等。
④現場(chang)裁(cai)剪電(dian)地暖、接端子、做絕緣和野(ye)蠻施工最容易(yi)造成電(dian)地暖系統漏(lou)電(dian)。
(3)泄漏電流(liu)過大
系(xi)(xi)統(tong)的(de)(de)泄(xie)漏電(dian)(dian)(dian)流超過(guo)(guo)漏電(dian)(dian)(dian)保護器剩(sheng)余(yu)脫扣電(dian)(dian)(dian)流額(e)定(ding)(ding)值(通(tong)常為30mA)時,會(hui)導致(zhi)電(dian)(dian)(dian)地暖(nuan)系(xi)(xi)統(tong)跳閘。泄(xie)漏電(dian)(dian)(dian)流是由電(dian)(dian)(dian)地暖(nuan)系(xi)(xi)統(tong)的(de)(de)結構(gou)決定(ding)(ding)的(de)(de)。泄(xie)漏電(dian)(dian)(dian)流的(de)(de)大小可(ke)以通(tong)過(guo)(guo)電(dian)(dian)(dian)地暖(nuan)產(chan)品的(de)(de)結構(gou)、技(ji)術和鋪裝工(gong)藝來控(kong)制(zhi)。電(dian)(dian)(dian)地暖(nuan)系(xi)(xi)統(tong)中的(de)(de)泄(xie)漏電(dian)(dian)(dian)流雖然不會(hui)對人體(ti)構(gou)成危害,但泄(xie)漏電(dian)(dian)(dian)流與“漏電(dian)(dian)(dian)電(dian)(dian)(dian)流”一起,都將通(tong)過(guo)(guo)漏電(dian)(dian)(dian)保護控(kong)制(zhi)開關,進而使(shi)系(xi)(xi)統(tong)跳閘。
類型和產品結構不同(tong)(tong)的(de)電地(di)暖(nuan),在散熱末端結構相同(tong)(tong)的(de)情(qing)況下也會產生(sheng)不同(tong)(tong)數值的(de)泄漏電流,所以電地(di)暖(nuan)廠家必須有相應的(de)解決方案。需要提醒的(de)是,不接漏電保護裝置、直接連接空氣開關等行為,都(dou)會帶來嚴(yan)重的(de)安全(quan)隱患。