Mayelana nokushisa okusebenzayo okuvumelekile kwemishini yokusebenza kwamakhebula, ukufakwa kwenjoloba kuvame ukukalwa ngo-65 ° C, polyvinyl chloride (pvc) ukufakwa ku-70 ° C. Ngemibuthano emfushane (enobude obukhulu obungeqi ngaphezulu kwemizuzwana emi-5), amazinga okushisa aphezulu avumelayo angu-160 ° C ukuze i-PVC insulation kanye ne-250 ° C yokufakwa kwe-XLPE.
I. Umehluko phakathi kwezintambo ze-XLPE nezintambo ze-PVC
1. Izintambo eziphansi ezixhunyiwe (i-XLPE) Cross-Linen-Locled-Cross, Sekuqala ukwethula maphakathi nonyaka we-1990s, zibone ukuthuthuka okusheshayo, manje selibalwa yingxenye yemakethe kanye ne-polyvinyl chloride (pvc) cable. Uma kuqhathaniswa nezintambo ze-PVC, izintambo ze-XLPE zibukwa amandla athwala amanje, amandla aqine ngokweqile, futhi ama-Lifepan ama-Lifespan amade (i-PVC Cable Therpal Lifespan ngokuvamile yiminyaka engama-20 ngaphansi kwemibandela evumayo). Lapho uvutha, i-PVC ikhipha intuthu emnyama emnyama namagesi anobuthi, kanti i-XLPE COMBUSTION ayikhiqizi amagesi anobuthi. Ukuphakama kwezintambo ezixhumene kakhulu kuyaziwa ngokwengeziwe ngemikhakha yokuklama neyokusebenza.
2. Izintambo ze-PVC ezijwayelekile (ukufakwa kanye ne-sheath) zishisa ngokushesha ngokuvuselelwa okusheshayo, imililo eyandisa imililo. Balahlekelwe amandla okunikeza amandla kungakapheli imizuzu eyi-1 kuye kwayi-2. I-PVC yokuhlanganisa ikhipha intuthu emnyama emnyama, okuholela ebunzimeni bokuphefumula kanye nezinselelo zokufuduka. Ngokusobala ngokuhlolisisa, ukuhlanganiswa kwe-PVC kukhipha amagesi anobuthi futhi awonakalisayo afana ne-hydrogen chloride (HCL) kanye ne-dioxins, okuyizimbangela eziphambili zokushona komlilo (ezibangelwa yi-80% yokufa kwabantu ngomlilo). Lawa magesi agculisa ngogesi, ukuyekethisa okulimazayo kokusebenza nokuholela ezingozini zesibili ezinzima ukunciphisa.
II. Izintambo ze-Flame-Retardant
1 Izintambo ze-Flame-Retardant kufanele zikhombise izici ze-flame-retardant futhi zihlukaniswe ngamazinga amathathu e-flame-retardant a, b, kanye c ngokusho kwe-IEC 60332-3-3-24 "izivivinyo ezivivinyweni zomlilo ngaphansi kwezimo zomlilo." I-Class A inikezela ngokusebenza okuphezulu kakhulu kwe-flame-retardant.
Ukuqhathanisa ukuqhathanisa okuvivinyayo kuma-flame-retardant kanye nama-non-flame-retardant izintambo kwenziwa yi-US standards kanye ne-technology cwaninga Institute. Imiphumela elandelayo igqamisa ukubaluleka kokusebenzisa izintambo ze-flame-retardant:
a. Izintambo ze-Flame-Retardant zinikeza isikhathi esingaphezu kokuphunyuka okuphezulu okungu-15 ngokuqhathaniswa nezintambo ezingezona amalangabi-retardant.
b. Izintambo ze-Flame-Retardant zishisa kuphela ingxenye enezinto eziningi njengezintambo ezingezona ezomlilo.
c. Ama-Flame-Retardant Wires akhombisa isilinganiso sokukhishwa kokushisa kuphela ikota yalokho kwezintambo ezingewona amalangabi-retardant.
d. Ukukhishwa kwegesi okunobuthi kusuka ekuvukeni kungokwesithathu kwaleyo yemikhiqizo engeyona eyabavulwa.
e. Ukusebenza kwesizukulwane sokubhema kukhombisa umehluko obalulekile phakathi kwemikhiqizo ye-flame-retardant ne-non-flame-retarant yemikhiqizo.
2. Halogen-free low-sbeke
Izintambo ze-halogen-ezingenamasifu kufanele zibe ne-harogen-free, ephansi-intuthu, nezimfanelo zelangabi-emuva, ngokucaciswa okulandelayo:
I-IEC 607754 (Isivivinyo samahhala seHalogen) IEC 61034 (Ukuhlolwa okuphansi kwentuthu)
I-PH isisindo esinaka ukuhanjiswa okuphansi okuphansi
Ph≥4.3 R≤10US / MM ≥60%
3. Izintambo ezivimbela umlilo
a. Izinkomba zokuhlola ukuqina komlilo ezivimbela umlilo (lokushisa lomlilo nesikhathi) ngokuya nge-IEC 331-1970 ejwayelekile zingama-750 ° C. Ngokusho kwe-IEC 60331 okusalungiswa okusha okuvela ekuvota kwakamuva kwe-IEC, izinga lokushisa lomlilo lisukela ngo-750 ° C kuya ku-800 ° C. ° C.
b. Izintambo ezivimbela umlilo nezintambo zingahlukaniswa izintambo ezivimbela umlilo ezivuthayo umlilo nezintambo zokungamelana nomlilo ezingezona amalangabi ezisuselwa kumehluko ezintweni ezingezona zensimbi. Izintambo ezivinjelwe ngomlilo ezifuywayo zisebenzisa abaqhubi be-mica-camera kanye nokufakwa kwe-flame-retardant okukhishwe yi-flame njengesakhiwo sabo esiyinhloko, ngemikhiqizo ye-class b yemikhiqizo. Labo abahlangabezana nezigaba Amazinga ajwayele ukusebenzisa amateyipu akhethekile we-mica kanye namaminerali (umnyombo wethusi, umkhono wethusi, ukufakwa kwe-magnesium oxide, owaziwa nangokuthi ama-mi) ama-mi) amakhebuli angenakuvimbela umlilo.
Izintambo ezivinjelwe ngomlilo ezingenakususwa, azikhiqizi, zingavimbi, zingamelana nezobuthi, zingavikeli umthelela, nokuvimbela amanzi. Baziwa njengezintambo zomlilo, bekhombisa ukusebenza okuvelele kakhulu kwezindlela ezivimbela izithelo ezivinjelwe. Kodwa-ke, inqubo yabo yokukhiqiza iyinkimbinkimbi, izindleko zabo ziphezulu, ubude bazo bokukhiqiza bulinganiselwe, ukubolekwa kwabo kukhulu, ukufakwa kwabo kuthambekele kumswakama, futhi njengamanje, imikhiqizo eyodwa-kwawo kuphela engafakwa. Izikhungo ezihlala njalo ezinikezelwe kanye nezixhumi eziphakathi ziyadingeka, zokwenza ukufakwa nokwakha kuyinkimbinkimbi ngokwengeziwe.
Isikhathi Sokuposa: Sep-07-2023