Ma ke ʻano o nā mahana hana lōʻihi e ʻae ʻia no nā cores uwea, ua helu pinepine ʻia ka insulation rubber ma 65°C, polyvinyl chloride (PVC) insulation ma 70°C, a me cross-linked polyethylene (XLPE) insulation ma 90°C. No nā kaapuni pōkole (me ka lōʻihi loa ʻaʻole iʻoi aku ma mua o 5 kekona), ʻo 160 ° C no ka insulation PVC a me 250 ° C no XLPE insulation.
I. Nā ʻokoʻa ma waena o nā kelepona XLPE a me nā kelepona PVC
1. ʻO nā uwea Low Voltage Cross-Linked (XLPE), mai ko lākou hoʻomaka ʻana i ka makahiki 1990, ua ʻike i ka ulu wikiwiki ʻana, i kēia manawa no ka hapalua o ka mākeke me nā kaula Polyvinyl Chloride (PVC). Ke hoʻohālikelike ʻia i nā kaula PVC, hōʻike nā kaula XLPE i ka hiki ke lawe i kēia manawa, ʻoi aku ka ikaika o ka hoʻouka ʻana, a me nā ola lōʻihi (ʻo ka PVC cable thermal lifespan he 20 mau makahiki ma lalo o nā kūlana maikaʻi, ʻoiai ʻo XLPE cable lifespan he 40 mau makahiki). Ke ʻā nei, hoʻokuʻu ʻo PVC i ka uahi ʻeleʻele a me nā kinoea ʻawaʻawa, akā ʻaʻole hoʻopuka ka XLPE i nā kinoea halogen ʻona. Ua ʻike nui ʻia ka maikaʻi o nā kaula i hoʻopili ʻia e ka hoʻolālā a me nā ʻāpana noi.
2. ʻO nā uwea PVC maʻamau (ka hoʻopaʻa ʻana a me ka puʻu) e ʻā koke me ka hoʻopau ʻana i ke ahi wikiwiki, e hoʻonui ana i ke ahi. Nalo lākou i ka mana lako i loko o 1 a 2 mau minuke. Hoʻokuʻu ka puhi ʻana o PVC i ka uahi ʻeleʻele mānoanoa, e alakaʻi ana i nā pilikia hanu a me nā pilikia hoʻokuʻu. ʻO ka mea ʻoi aku ka koʻikoʻi, hoʻokuʻu ʻo PVC i nā kinoea ʻawaʻawa a me nā kinoea e like me ka hydrogen chloride (HCl) a me nā dioxins, ʻo ia nā kumu nui o ka make i ke ahi (ʻo ia ka 80% o nā make pili i ke ahi). Hoʻopili kēia mau kinoea i nā mea uila, hoʻopilikia nui i ka hana insulation a alakaʻi i nā pōʻino lua e paʻakikī ke hoʻēmi.
II. Nā Uila Paʻa Paʻa
1. Pono e hōʻike nā uwea pale ahi i nā hiʻohiʻona pale ahi a hoʻokaʻawale ʻia i ʻekolu pae pale ahi A, B, a me C e like me IEC 60332-3-24 "Nā hoʻāʻo ʻana i nā kaula uila ma lalo o nā kūlana ahi." Hāʻawi ka Papa A i ka hana kiʻekiʻe loa me ka pale ahi.
Ua alakaʻi ʻia nā hoʻāʻo hoʻāhu hoʻohālikelike e ka US Standards and Technology Research Institute. Hōʻike nā hopena aʻe i ke koʻikoʻi o ka hoʻohana ʻana i nā kaula pale ahi:
a. Hāʻawi nā uea pale ahi ma mua o 15 mau manawa ʻoi aku ka nui o ka manawa e pakele ai ke hoʻohālikelike ʻia me nā uea pale ahi ʻole.
b. ʻO nā uea pale ahi e puhi wale i ka hapalua o ka nui o nā mea like me nā uea pale ahi ʻole.
c. Hōʻike nā uea pale ahi i ka hoʻokuʻu ʻana i ka wela i ka hapaha wale nō o nā uea pale ahi ʻole.
d. ʻO ka hoʻokuʻu ʻia ʻana o ke kinoea ʻona mai ka puhi ʻana he hapakolu wale nō o nā huahana pale ahi ʻole.
e. ʻAʻohe ʻokoʻa koʻikoʻi ma waena o nā huahana pale ahi a me nā huahana pale ahi ʻole.
2. Nā Uila Haʻahaʻa Uhi Haʻahaʻa Halogen
Pono e loaʻa i nā kaula haʻahaʻa haʻahaʻa ʻole halogen nā ʻano ʻano halogen-free, haʻahaʻa, a me ka lapalapa ahi, me nā kikoʻī penei:
IEC 60754 (hoʻāʻo ʻole halogen) IEC 61034 (hoʻāʻo haʻahaʻa haʻahaʻa)
PH paona conductivity Ka liʻiliʻi liʻiliʻi māmā transmittance
PH≥4.3 r≤10us/mm T≥60%
3. Nā Uila Pale Ahi
a. ʻO nā hōʻailona hōʻailona hoʻāʻo ʻana i ke ahi (ka wela ahi a me ka manawa) e like me IEC 331-1970 maʻamau he 750 ° C no 3 mau hola. Wahi a ka IEC 60331 hou hou mai ke koho balota IEC i hala iho nei, ʻo ka mahana wela o ke ahi mai 750 ° C a 800 ° C no 3 mau hola.
b. Hiki ke hoʻokaʻawale ʻia nā uea ahi a me nā kaula i ke ahi a me nā kaula ahi ʻole e pili ana i nā ʻokoʻa o nā mea metala ʻole. Hoʻohana mua ʻia nā uwea pale ahi kūloko i nā conductors i uhi ʻia i ka mika a me ka insulation pale ahi i hoʻokuʻu ʻia e like me kā lākou hana nui, me ka hapa nui o nā huahana Class B. Hoʻohana maʻamau ka poʻe e kū ana i nā kūlana papa A i nā lipine mica synthetic kūikawā a me ka insulation mineral (copper core, copper sleeve, magnesium oxide insulation, a ʻike ʻia hoʻi ʻo MI) i nā kaula pale ahi.
ʻAʻole hiki ke puhi ʻia nā uwea pale ahi i hoʻoheheʻe ʻia me ka minerala, ʻaʻole hoʻopuka i ka uahi, kūpaʻa i ka ʻino, ʻaʻohe mea ʻawaʻawa, paʻa i ka hopena, a kūʻē i ka ʻehu wai. ʻIke ʻia lākou he mau kaula ahi ahi, e hōʻike ana i ka hana ʻoi loa o ke ahi ahi ma waena o nā ʻano ʻano uea pale ahi. Eia naʻe, paʻakikī kā lākou kaʻina hana, ʻoi aku ka nui o kā lākou kumukūʻai, palena ʻia ka lōʻihi o kā lākou hana ʻana, nui ko lākou radius kulou, hiki ke hoʻopili ʻia ko lākou insulation i ka makū, a i kēia manawa, hiki ke hāʻawi ʻia nā huahana hoʻokahi-core o 25mm2 a ma luna. Pono pono nā terminals i hoʻolaʻa mau ʻia a me nā mea hoʻohui waena, e hoʻonui i ka paʻakikī o ka hoʻonohonoho ʻana a me ke kūkulu ʻana.
Ka manawa hoʻouna: Sep-07-2023