Vim li cas cov kab thaiv sab nrauv ntawm qhov hluav taws xob fiber ntau cable tseem ceeb? Cov ntaub ntawv yog dab tsi?
Optical fiber cable feem ntau yog ua los ntawm cov tub ntxhais kawm tshwj xeeb fiber ntau, cladding, txheej, qhov cuab lub zog thiab sab hauv hnab riam Raws li txheej txheej tiv thaiv ntawm kab hluav taws xob, kab thaiv sab nraud muaj cov haujlwm ntawm kev tiv thaiv hluav taws thiab tiv thaiv ya raws, uas muaj qhov cuam tshuam tseem ceeb ntawm kev ua tiav ntawm cov hnab riam sab nraud thaum muaj hluav taws hauv cov ntaub ntawv chaw.
Lub hnab riam sab nraud ntawm optical fiber cable tau muab faib ua cov khoom sib txawv. Lub hnab riam sab nraud ntawm txhua cov khoom siv nws muaj nws tus yam ntxwv (qhov kev ua haujlwm ntawm hluav taws sib txawv) thiab haum rau siv cov xwm txheej. Cov khoom siv sab nrauv sheath yog PE, PVC, PVDF, LSZH, plenum, riser, thiab lwm yam.
Cov khoom ntawm sab hauv sheath | Cov lus txhawb zoo |
PE （Polyethylene） | Nws muaj zoo kub tsis kam tiv thaiv zoo, tshuaj lom neeg ruaj khov, tiv taus feem ntau cov kua qaub thiab alkali yaig, hnav tsis kam, thiab hluav taws xob rwb thaiv tsev siab. Yog li no, PE yog cov xaum txheej txheem rau cov xaim hluav taws xob sab nraum zoov. |
PVC （Polyvinyl tshuaj dawb） | Nws muaj cov cuab yeej zoo lub zog, hluav taws xob muaj hluav taws xob zoo, muaj kev hloov pauv yooj yim, muaj zog thiab nplaim taws rov qab, tab sis tsis zoo rau lub teeb thiab kub, yog li nws tsim dua li cov khoom siv sab nraud ntawm cov khoom siv hluav taws xob sab hauv fiber ntau cable. |
PVDF （Polyvinylidene fluoride） | Nws muaj ntau yam khoom zoo, xws li elasticity, tsis tshua muaj ceeb thawj, tsis tshua muaj thermal conductivity, tshuaj lom neeg corrosion tsis kam thiab lwm yam. Nyob rau tib lub sijhawm, nws tseem muaj cov nplaim hluav taws zoo dua li PE, thiab tsis yog tsim cov pa luam yeeb txawm tias muaj hluav taws. Yog li no, cov khoom siv PVDF tuaj yeem siv rau hauv cov hnab riam sab nraud ntawm qhov tseem ceeb dua ntab fiber ntau jumper. |
LSZH smoke Cov pa taws qis qis halogen） | LSZH muaj cov yam ntxwv ntawm kev haus luam yeeb qis, tsis muaj tshuaj lom, tsis tshua muaj corrosion thiab siab nplaim taws. Ua cov khoom siv kom nyab xeeb thiab ib puag ncig, LSZH yog qhov kev xaiv zoo rau kev teeb tsa sab hauv / sab nraum zoov. Tab sis kuj, tus nqi ntawm LSZH fiber ntau kho qhov muag cable yog kim kim. |
Plenum | Nws yog ib qho ntawm cov khoom tseem ceeb ntawm OFNP qib optical fiber cable, nrog cov nplaim hluav taws kub qeeb thiab tsis muaj cov roj ua kom muaj kuab lom los yog tsis muaj corrosive nyob rau hauv qhov kub kub. Optical fiber cable nrog plenum cov khoom yog cov xaim hluav taws xob zoo tshaj plaws nyob rau hauv cov huab cua xa qhov system rau kev tso pa tawm lossis cov khoom siv huab cua. |
Tus Txaus Ntshai | Nws yog ib qho ntawm cov khoom tseem ceeb ntawm OFNR qib kho qhov muag fiber ntau. Piv nrog rau cov khoom siv plenum, nws muaj cov nplaim hluav taws kub tsis muaj zog thiab tsis muaj kuab lom thiab corrosive roj cov ntsiab lus. Yog li no, OFNR qib kho qhov muag cov kab hluav taws xob nrog cov riser cov khoom siv feem ntau yog siv hauv kev tsim kho lub cev thiab cov kab rov tav. |
Nws tuaj yeem pom tau tias feem ntau ntawm cov hnab riam sab nrauv muaj cov nplaim hluav taws zoo. Puas yog cov ntaub hnab riam txheej sab nrauv khoom los ntsuas qhov hluav taws kub tsis kam ntawm cov hlua hluav taws xob fiber ntau? Tsis yog, cov nplaim taws retardant cov ntaub ntawv siv nyob rau hauv lub cable yuav tsum dhau qhov kev xeem thiab mus txog ib qib kev ntsuas hluav taws Piv txwv li, PVC sheathed cable, kom ua tiav qhov ua tau zoo tshaj plaws ntawm kev tua hluav taws, kuj yuav tsum xav txog txoj kab hluav taws xob tag nrho kom ua tiav kev ntsuas hluav taws.
Dab tsi yog qhov hluav taws kub qib ntawm optical fiber cables?
Hauv NEC, kev ntsuam xyuas hluav taws ntawm cov hluav taws xob fiber ntau cable feem ntau muab faib ua OFNP / OFCP, OFNR / OFCR, OFNG / OFCG thiab OFN / OFC.
OFNP / OFCP, NEC txheem nplaim nplaim retardant qib (qib pa), qib siab tshaj plaws. Piv txwv tias cov nplaim hluav taws xob yuam kom tawg rau lub pob ntawm cov nplaim retardant (pressurized) optical fiber cables los ntawm tus kiv cua, cov nplaim hluav taws xob nyob ntawm cov hluav taws xob kho qhov muag hluav taws xob yuav raug tua kom tsis pub dhau 5m, thiab tsis muaj tshuaj lom thiab xeb roj yuav tsim tawm.
OFNR / OFCR, qib ntsug (qib ntaiv) hauv NEC tus qauv, Qib thib ob. Ib yam li ntawd, tus kiv cua yog siv los txhawm rau cov nplaim taws mus rau lub pob zeb ua ke ua ntu theem kho qhov muag kab fiber ntau. Txawm hais tias cov nplaim hluav taws yuav tua tawm nyob rau hauv 5m, tsis muaj pa taws lossis ua kom muaj kev phom sij.
OFNG / OFCG thiab OFN / OFC yog qib kev lag luam thiab qib ua ke. Cov kab hluav taws xob fiber ntau hauv qab ob qhov qauv no feem ntau siv nyob rau hauv ib puag ncig muaj qhov yuav tsum muaj kev tiv thaiv hluav taws thiab nplaim taws rov qab.
Yuav ua li cas xaiv cov fiber ntau kab hluav taws xob nrog cov ntaub ntawv sib txawv sheath?
Feem ntau, plenum fiber ntau optic cable yog qhov tsim nyog rau thaj chaw thaiv kab rov tav thiab qhov chaw ib puag ncig (tshuab raj tsheb thauj mus los, huab cua tuav). Qhov ib puag ncig zoo no yog qhov cua thiab qhov hluav taws kub tsis yooj yim los tswj. Yog li no, OFNPflame retardant qib fiber ntau kab hluav taws xob cable yog qhov kev xaiv zoo tshaj plaws; Riser / PVC fiber ntau optic cable yog qhov haum rau cov chaw txawb pob tw ntsug, muab cov cuab yeej nkag los yog chav siv lub computer sib txuas nrog cov tub sib txuas lus ntawm cov plag tsev sib txawv muaj tsawg me ntsis ntawm thaj chaw hluav taws, thiab nplaim taws rov qab qib tuaj yeem ncav OFNR; LSZH optical fiber cables feem ntau siv rau hauv thaj chaw ib txwm muaj, txawm tias muaj hluav taws, vim tias cov pa taws tso tawm yog tsis muaj kuab lom, nws tuaj yeem zam kev raug mob rau cov neeg ua haujlwm cawm.
Vim tias qhov cuam tshuam ntawm hluav taws hauv cov chaw hauv cov ntaub ntawv sib txawv yog qhov sib txawv, NEC tus qauv pom zoo rau cov hluav taws xob fiber ntau hluav taws xob haum rau qhov chaw sib txawv. Nyob rau hauv dav dav, plenum fiber ntau optic cables yog haum rau loj / super loj cov ntaub ntawv chaw thiab txhaum-kam-ua ke / cov txij nkawm cov ntaub ntawv chaw; Riser / PVC fiber optic cables feem ntau siv rau hauv cov chaw nruab nrab cov ntaub ntawv thiab cov chaw khaws ntaub ntawv, thaum LSZH fiber ntau cov xov tooj hluav taws xob feem ntau siv hauv cov chaw me me, zoo ib yam li cov chav siv koos pis tawj.
HTF' s khoom siv kho qhov muag fiber ntau yog kho kom haum, qhov zoo tshaj yog lav, thiab cov khoom siv tau yog ntshuam.
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