由于工藝介質特點不同,所以根據介質的不同,電伴熱帶型號也各不相同,有使用前一定要認真核對,保證型號與設計一致。
在使用前,應按照廠家說明書的要求對電伴熱帶進行絕緣測試并記錄測試結果,在電伴熱帶敷設前,應首先檢查是否有破損、彎折現象,尤其是對鋼制材料的電伴熱帶。
敷設時(shi),應(ying)按照設計值(zhi)的(de)(de)(de)纏繞比(bi)及(ji)(ji)纏繞長度對設備進行(xing)(xing)纏繞,以保(bao)證足夠的(de)(de)(de)補償熱(re)量(liang);電(dian)(dian)(dian)伴(ban)熱(re)帶(dai)及(ji)(ji)共附件都安(an)裝完畢(bi)后,在(zai)(zai)送(song)電(dian)(dian)(dian)前,檢(jian)查一次回路的(de)(de)(de)連接及(ji)(ji)正常非帶(dai)電(dian)(dian)(dian)金屬支架,構件接地是(shi)否(fou)可靠;應(ying)使用至少1000V(DC)的(de)(de)(de)絕(jue)緣測(ce)(ce)(ce)試(shi)儀進行(xing)(xing)側(ce)試(shi)并(bing)記錄側(ce)試(shi)結果(guo),如(ru)果(guo)在(zai)(zai)測(ce)(ce)(ce)試(shi)過(guo)程中,側(ce)最(zui)值(zhi)不穩定并(bing)且測(ce)(ce)(ce)試(shi)值(zhi)偏小,則應(ying)檢(jian)查電(dian)(dian)(dian)伴(ban)熱(re)帶(dai)是(shi)否(fou)有漏電(dian)(dian)(dian)的(de)(de)(de)點;配出回路的(de)(de)(de)開關(guan)應(ying)相(xiang)應(ying)電(dian)(dian)(dian)伴(ban)熱(re)帶(dai)的(de)(de)(de)電(dian)(dian)(dian)流相(xiang)適應(ying),以避免過(guo)電(dian)(dian)(dian)流脫扣;可以用單點接地的(de)(de)(de)試(shi)驗檢(jian)查漏電(dian)(dian)(dian)保(bao)護是(shi)否(fou)正常;停電(dian)(dian)(dian)后進行(xing)(xing)保(bao)溫層(ceng)的(de)(de)(de)施(shi)工,保(bao)溫層(ceng)施(shi)工完畢(bi)后在(zai)(zai)最(zui)外層(ceng)的(de)(de)(de)防水層(ceng)上粘貼(tie)警(jing)示標(biao)簽避免以后的(de)(de)(de)作業對電(dian)(dian)(dian)伴(ban)熱(re)帶(dai)的(de)(de)(de)損壞(huai)。由于在(zai)(zai)設備供貨(huo)時(shi),產品(pin)(pin)有防暴和非防爆(bao)(bao)(bao)之分(fen)(fen),同時(shi)防爆(bao)(bao)(bao)產品(pin)(pin)的(de)(de)(de)防爆(bao)(bao)(bao)等級(ji)也不一致(zhi),為了避免混淆,接線盒或兩通(tong)(tong)、二(er)通(tong)(tong)安(an)裝剛,應(ying)注憊(bei)所使用的(de)(de)(de)產品(pin)(pin)的(de)(de)(de)防爆(bao)(bao)(bao)份級(ji)與(yu)爆(bao)(bao)(bao)炸(zha)危(wei)險區城的(de)(de)(de)劃分(fen)(fen)一致(zhi)。隱蔽前對外觀進行(xing)(xing)觀察檢(jian)查,對照圖紙檢(jian)查電(dian)(dian)(dian)伴(ban)熱(re)帶(dai)的(de)(de)(de)型號(hao)和纏繞比(bi)是(shi)否(fou)正確。隱蔽前后分(fen)(fen)別作絕(jue)緣電(dian)(dian)(dian)阻測(ce)(ce)(ce)試(shi),并(bing)出具測(ce)(ce)(ce)試(shi)記錄。通(tong)(tong)電(dian)(dian)(dian)對翻電(dian)(dian)(dian)保(bao)護作模擬動作試(shi)驗,觀察開關(guan)動作。
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