Hauv qhov xwm txheej ntawm kev kho kom zoo nkauj hauv tsev thiab zoo tib yam qis-voltage pej xeem lub zog faib hluav taws xob, XLPE (cross- txuas polyethylene) cov xov hlau insulated muaj kev ua tau zoo tshaj plaws piv rau cov tsoos PVC (polyvinyl chloride) insulated xov hlau. PVC tsuas muaj tus nqi zoo thiab tsim nyog rau kev xaim ib ntus thiab yooj yim; Tam sim no, lub teb chaws tus qauv kev kho kom zoo nkauj hauv tsev kho kom zoo nkauj cov kab xa hluav taws xob nyiam txais XLPE insulated xov hlau.
★. Lub ntsiab txhais ntawm cov ntaub ntawv
PVC (polyvinyl chloride): Cov khoom siv rwb thaiv tsev ib txwm muaj, nws yog cov khoom siv hluav taws xob tseem ceeb rau cov hluav taws xob hluav taws xob thaum ntxov thiab cov xov hlau sheathing zoo tib yam. Nws muaj keeb kwm ntev daim ntawv thov thiab cov khoom lag luam loj, thiab nws qhov kev ua tau zoo tag nrho yog qhov yooj yim.
XLPE (cross-txuas polyethylene): Ib qho khoom siv polyethylene hloov kho los ntawm kev sib txuas- thev naus laus zis, uas ua rau muaj txiaj ntsig zoo rau kev tiv thaiv tshav kub thiab tiv thaiv- kev laus. Tam sim no nws yog cov khoom siv hluav taws xob tseem ceeb hauv tsev kho kom zoo nkauj hluav taws xob faib hluav taws xob thiab cov hluav taws xob tseem ceeb hauv lub zog hluav taws xob.
★. Core Performance Comparison
1. Thaum tshav kub kub tsis kam thiab muaj peev xwm nqa tam sim no:Qhov ntev -lub sij hawm ua hauj lwm kub txwv ntawm PVC tsuas yog 70℃. Nyob rau hauv qhov kub thiab txias, qhov rwb thaiv tsev yog qhov ua rau kev laus thiab softening, thiab tib txoj kab uas hla ntawm cov hlau muaj qhov txwv tam sim no, uas tsis tuaj yeem hloov mus rau qhov ntev - lub sij hawm siab - lub hwj chim loads. XLPE tuaj yeem tiv taus ntev -lub sijhawm ua haujlwm kub ntawm 90 degree, thiab tuaj yeem tiv taus luv luv -circuit kub ntawm 250℃rau lub sijhawm luv luv yam tsis muaj melting. Tib qhov kev qhia tshwj xeeb muaj peev xwm nqa tau ntau dua, uas tuaj yeem hloov kho mus ntev - lub sijhawm ua haujlwm ntawm kev kho kom zoo nkauj hauv tsev siab - cov cuab yeej siv hluav taws xob xws li cua txias, cua sov dej, thiab cov chaw them nyiaj.
2. Rwb thaiv tsev hluav taws xob ua haujlwm:XLPE muaj cov rwb thaiv tsev siab, zoo tiv taus hluav taws xob ua haujlwm, thiab tsis tshua muaj dielectric poob. Nws ua kom lub zog ruaj khov ua haujlwm thiab tsim nyog rau txhua qhov xwm txheej ntawm qhov qis -voltage fais fab faib. PVC muaj cov polar chlorine molecules, uas muaj hluav taws xob poob siab thiab tsis muaj kev ruaj ntseg nyob rau hauv siab -voltage tej yam kev mob, thiab tsuas yog haum rau tsawg- fais fab tuag thiab yooj yim thaiv.
3. Kev laus ua haujlwm thiab kev pabcuam lub neej:PVC muaj qhov cuam tshuam rau qhov kub thiab txias, uas ua rau tawv tawv, tawg, thiab brittleness. Lub neej kev pab cuam tsuas yog 10-15 xyoo. Lub neej nyob rau hauv qhov chaw kaw thiab siab - qhov kub thiab txias ib puag ncig yog luv dua. Tsis tas li ntawd, nws tso tawm cov pa luam yeeb halogenated thaum combustion, ua rau muaj kev phom sij tseem ceeb. XLPE muaj kev tiv thaiv zoo rau qhov kub thiab txias, ultraviolet rays, thiab kev laus. Lub teb chaws tus qauv tsim kev pabcuam lub neej tuaj yeem ncav cuag 70 xyoo. Nws yog tsawg- pa luam yeeb, halogen{11}} dawb, thiab tsis muaj tshuaj lom. Nws yog cov khoom siv rau siab- cov tsev nce siab thiab tiv thaiv hluav taws.
4. Environmental Adaptability thiab Kev Tsim Kho Kev Ua Haujlwm:XLPE tiv taus cov kua qaub, alkali, roj, thiab noo noo, haum rau cov xwm txheej nyuaj thiab ntub dej xws li hauv qab daus, sab nraum zoov, thiab hauv av. Cov khoom yog hloov tau yooj yim, tsis tshua muaj kev tawg ntawm qhov kub thiab txias, thiab yooj yim rau kev siv cov kav hlau tsis muaj kev puas tsuaj rau txheej rwb thaiv tsev. PVC muaj qhov tsis zoo rau ya raws, corrosion, thiab roj. Cov khoom yog ib qho nyuaj thiab yooj yim tawg ntawm qhov kub thiab txias thiab yooj yim puas thaum khoov. Kev tsim kho nyuaj siab dua.
5. Tus nqi thiab kev ua raws cai:Cov ntaub ntawv raw ntawm PVC yog pheej yig, thiab tus nqi ntawm tib lub ntsiab lus hlau yog 15% -30% qis dua li ntawm XLPE. Cov txheej txheem ntau lawm ntawm XLPE yog qhov tseeb dua thiab muaj nqi ntau dua. Lub ntsiab tooj liab- cov xov hlau tseem ceeb rau kev kho kom zoo nkauj hauv tsev hauv lub teb chaws tus qauv, xws li BV thiab BVR, yog tag nrho ua nrog XLPE rwb thaiv tsev. Tib lub sijhawm, PVC muaj cov halogens thiab muaj tshuaj lom, thiab tau raug txwv tsis pub siv hauv cov tsev siab - nce siab, chav computer, thiab kab hluav taws xob tiv thaiv. XLPE thiab qis- haus luam yeeb, halogen-XLPE dawb yog siv dav hauv ntau lub tsev pej xeem.
★. Scene Selection Criteria
Txaus siab rau XLPE:Kev kho kom zoo nkauj hauv tsev cov kab tseem ceeb, qhov (socket), lub tshuab cua txias, cov khoom siv hluav taws xob, thiab lwm yam, rau cov khoom siv hluav taws xob ruaj khov; sab nraum zoov, underground, thiab damp thaiv; siab-nce thiab pej xeem lub tsev faib hluav taws xob, hluav taws xob tiv thaiv hluav taws xob; tag nrho cov kab hluav taws xob xa hluav taws xob uas ua haujlwm nyob rau hauv tag nrho cov load rau lub sijhawm ntev.
Haum rau PVC scenarios:Ib ntus thiab luv luv- lub sij hawm xaim ntawm qhov chaw tsim kho, teeb pom kev yooj yim circuits, thiab lwm yam, nyob rau hauv qis- qauv xwm txheej; tuaj yeem siv los ua cov hlua khi sab nrauv, thiab cov qauv "XLPE rwb thaiv tsev + PVC sheath" feem ntau siv hauv kev lag luam tsis cuam tshuam rau cov tub ntxhais fais fab kev nyab xeeb.
