根據(ju)供電(dian)公司對陶瓷(ci)防靜電(dian)地板事故的(de)調(diao)查,泄(xie)漏的(de)原因可能有以下幾個(ge)方面:
1. 電(dian)(dian)接(jie)觸不(bu)良或漏電(dian)(dian)可(ke)能引(yin)(yin)起火災(zai)。陶(tao)瓷防靜電(dian)(dian)地(di)(di)板接(jie)地(di)(di)不(bu)牢固,類似不(bu)接(jie)地(di)(di),造(zao)成接(jie)觸電(dian)(dian)阻大,使過流保護(hu)裝置難以(yi)操作。同時,在接(jie)觸點產生弧。經測量,只有(you)0.5A電(dian)(dian)流的(de)電(dian)(dian)弧溫度(du)可(ke)達到2000℃以(yi)上(shang)(shang),足以(yi)點燃所有(you)可(ke)燃材料。陶(tao)瓷防靜電(dian)(dian)地(di)(di)板保護(hu)零線(xian)或保護(hu)地(di)(di)線(xian)的(de)直徑(jing)容(rong)易被忽略。如果太小,當它通過一個大的(de)泄漏電(dian)(dian)流時,線(xian)的(de)溫度(du)會迅速上(shang)(shang)升,也會引(yin)(yin)起火災(zai)。
2. 保護(hu)(hu)零(ling)線或(huo)地線端子連接弱。該(gai)保護(hu)(hu)裝置能正常工作,但故障(zhang)點不易發現。當泄漏時(shi),電(dian)阻(zu)過(guo)高(gao)(gao),會(hui)造成陶瓷防(fang)靜電(dian)地板局部過(guo)熱,并(bing)在連接端產生(sheng)高(gao)(gao)溫或(huo)電(dian)弧,點燃(ran)(ran)周圍可燃(ran)(ran)物(wu),或(huo)燒壞電(dian)源插(cha)座(zuo)、開關等(deng)。
3.當漏(lou)電(dian)(dian)壓引起火(huo)災和繼續發生(sheng),因為漏(lou)電(dian)(dian)電(dian)(dian)流不能流出(chu),它會尋(xun)找另一個(ge)小阻抗的陶(tao)瓷防靜電(dian)(dian)地板,和行為在(zai)(zai)零線,這樣所有的電(dian)(dian)氣設備與金屬外殼(ke)有電(dian)(dian)壓在(zai)(zai)地上。在(zai)(zai)這一點(dian)上,電(dian)(dian)弧可能飛到附(fu)近的低(di)電(dian)(dian)位金屬部分,并成為一個(ge)點(dian)火(huo)源。
陶瓷防靜電(dian)(dian)地(di)板在鋪設(she)時(shi)(shi),必須(xu)做好接(jie)電(dian)(dian)工(gong)作,不(bu)(bu)能出現(xian)接(jie)觸(chu)不(bu)(bu)良情況。同時(shi)(shi),為了防止設(she)備電(dian)(dian)流(liu)大量泄漏(lou)造成(cheng)的(de)不(bu)(bu)利影響,應增加防靜電(dian)(dian)樓層零(ling)線和底(di)線的(de)鋪設(she),增加電(dian)(dian)流(liu)傳輸通道。此外,應設(she)置(zhi)報(bao)警系統,可連接(jie)陶瓷防靜電(dian)(dian)地(di)板,局部板當(dang)電(dian)(dian)流(liu)過大時(shi)(shi),可起到報(bao)警功能。