Txhim kho fiber ntau splice kaw kom zoo yuav tsum tau ntau dua li ua raws li phau ntawv qhia. Nws xav kom nkag siab yuav ua li cas cable slack, ib puag ncig yam tseem ceeb, thiab cov txheej txheem splicing meej sib cuam tshuam los tsim kev sib raug zoo network uas kav 20 xyoo lossis ntau dua.
Vim li cas Kev Cai Cable Slack Management Matters
Fiber optic cable slack pab peb lub luag haujlwm tseem ceeb hauv koj lub network installation.Ua ntej, nws muab qhov yooj yim xav tau rau yav tom ntej kho lossis hloov kho yam tsis tas yuav tsum tau ua tiav cable hloov. Qhov thib ob, nws tiv thaiv kev nruj heev thaum lub sij hawm kub hloov pauv uas ua rau cable nthuav thiab contraction. Thib peb, nws tsim cov kev pabcuam loops uas haum rau cov khoom siv hloov chaw lossis network reconfiguration. Feem ntau, 20 mus rau 30 feet ntawm fiber ntau optic cable slack yog tshwj tseg ntawm cov ntsiab lus tseem ceeb.
Txawm li cas los xij, kev slack ntau dhau ua rau nws tus kheej muaj teeb meem.Ntau dhau cable hauv qhov kaw lossis qhov tuav ua rau nruj coiling, uas ua txhaum qhov tsawg kawg nkaus khoov vojvoog specifications.
Thaum khaws cia slack nyob rau hauv fiber ntau splice kaw installation, siv daim duab -yim qauv es tsis yooj yim coils. Txoj kev no tiv thaiv cable twist thiab tswj kom zoo geometry. Rau kev siv dav hlau, tso cai ntxiv slack los them rau sag ntawm tus ncej, feem ntau 3% mus rau 5% ntawm qhov ntev nyob ntawm qhov kub thiab txias.
Kev npaj ua ntej txhim kho Fiber Optic Cable Splice Box
Pib los ntawm kev tshem tawm lub tsho sab nrauv siv cov strippers tsim nyog, nthuav tawm 3 meters ntawm cable rau kev ua haujlwm ntev. Ntxuav cov raj xaum xoob nrog lint - cov ntaub so huv thiab kev pom zoo ntxuav, tshem tawm tag nrho cov gel thiab cov khib nyiab. Cov kauj ruam no tiv thaiv kev kis kab mob ntawm fiber ntau optic splice ib puag ncig.
Tshem lub tsho cable 150mm rov qab thiab maj mam ua rau saum npoo nrog cov ntawv xuab zeb zoo. Qhov no roughened nto txhim kho adhesion thaum thov sealing rings thiab xyuas kom meej watertight kaw kev ua tau zoo.
Xaiv cov nplhaib sib khi uas phim koj cov kab hluav taws xob sab nraud. Feem ntau cov fiber ntau splice kaw muaj xws li ntau-ntau grommets haum rau cables los ntawm 10.2mm mus rau 21.6mm txoj kab uas hla. Txhim kho cov grommets loj dhau los tsim qhov khoob qhov chaw noo tuaj yeem nkag mus, thaum cov grommets undersized siv ntau compression uas ua rau cov kab hluav taws xob puas.
Txoj kev muaj zog cov tswv cuab los ntawm cov ntsiab lus hauv av, tswj kev txuas ntxiv rau cov hlau txuas. Txoj hauj lwm cables kom lub tsho kawg aligns precisely nrog rau sab nraum qab ntawm lub sheath tuav. Qhov chaw tsis sib xws tsim cov ntsiab lus kev ntxhov siab uas cuam tshuam ob qho tib si kev ruaj ntseg thiab ib puag ncig sealing.
Fiber Optic Cable Slack thiab Fiber Splice Kaw Installation
① Rau cov yeeb yaj kiab steel, teeb tsa cov kab txuas txuas ntxiv rau ntawm thawj tus ntoo khaub lig- nqaj saum lub platform; rau steel yeeb nkab ncej, nruab nws 5-6 meters hauv qab no tus neeg xyuas pib crossarm, referencing tus tsim drawings rau tej yam.
② Txhim kho cov hlua khi hlua khi thiab cov thawv sib txuas hauv cov haujlwm uas tau xaiv nrog kev ruaj ntseg. Ntxiv ib qhodown Lead Clamplos yog parallel clamp 40-50 cm hauv qab ntawm lub thawv splice clamp.
③ Cov kab ntau dhau yuav tsum tau muab khi kom ruaj ntseg, feem ntau yog coiled 4-5 zaug uas tsis muaj tsawg dua 4 cov ntsiab lus khi. Cable khoov yuav tsum du thiab tej yam ntuj tso, nrog tsawg kawg yog dabtsi yog khoov vojvoog lub rooj sib tham yuav tsum tau (feem ntau 40 lub sij hawm lub cable sab nraud txoj kab uas hla).
④ Txhim kho cov clamps (clamps) rau cov kab hluav taws xob kho qhov muag yuav tsum tau muab tso rau ntawm qhov ntev ntawm 1.5-2m, kom ntseeg tau tias cov khoom siv kho qhov muag tsis rub tawm tsam tus pej thuam.
⑤ Cov kab poob rau ntawm cov yeeb nkab steel yuav tsum ruaj ntseg siv cov clamps nruj los yog ob chav hloov tau yooj yim.
Cov txheej txheem kuaj thiab validation
Kev txheeb xyuas qhov zoo pib tam sim ntawd tom qab fiber ntau splice kaw los ua ke thiab txuas ntxiv los ntawm kev pib ua haujlwm hauv network. Siv lub sij hawm kho qhov muag -domain reflectometer (OTDR) los ntsuas kev ua haujlwm sib txuas thiab txheeb xyuas cov teeb meem ua ntej txhawb qhov txuas.
Teem koj OTDR kom phim hom fiber ntau tau teeb tsa -1310nm thiab 1550nm wavelengths rau ib hom kev siv, nrog rau cov mem tes dav dav thiab qhov ntsuas ntawm qhov ntsuas qhov cuam tshuam. Txhua qhov fiber ntau optic splice yuav tsum qhia qhov poob qis hauv qab 0.3dB rau kev ua tau zoo, nrog rau feem ntau fusion splices ntsuas 0.05dB txog 0.15dB.
Cov ntaub ntawv txhua qhov sib txuas nrog OTDR cov cim qhia qhia qhov chaw sib txuas, poob tus nqi, thiab txhua qhov kev xav tau siab. Cov ntaub ntawv hauv paus no ua pov thawj tsis muaj nuj nqis thaum daws teeb meem yav tom ntej. Cov OTDR niaj hnub no cia li tsim cov ntawv tshaj tawm txuas cov kev txheeb xyuas fiber ntau los kuaj cov txiaj ntsig, tshem tawm cov kev hloov pauv tsis raug.Check ferrule kawg- ntsej muag rau khawb, tawg, lossis cov kab mob sib kis uas ua rau muaj kev sib txuas tsis zoo thiab siv tus kws tshaj lij los ntxuav cov khoom sib txuas uas muaj teeb meem.
Mechanical testing: Siv maj mam rub quab yuam rau txhua lub cable uas nws nkag mus rau hauv qhov kaw, xyuas kom meej tias cov txheej txheem kho mob tuav tau zoo. Cables yuav tsum tsis txhob txav ntau tshaj 5 hli nyob rau hauv 50N ntawm quab yuam. Kev txav ntau dhau qhia tias tsis txaus clamping uas yuav ua rau muaj teeb meem thaum cables daws teeb meem.
Common Installation yuam kev thiab tiv thaiv
Ua txhaum yam tsawg kawg nkaus lub vojvoog qhov tshwj xeeb saum cov npe
Cov kws kho mob ua haujlwm nyob rau hauv qhov chaw nruj feem ntau yuam kom cov cables tig nruj dua li cov qauv txwv tso cai. Qhov no tsim microbending poob uas degrades teeb liab zoo tam sim ntawd thiab macrobending tsis ua hauj lwm uas tshwm sim ntau lub hlis raws li kev ntxhov siab fractures propagate los ntawm cov tub ntxhais fiber.
Tsis txaus slack managermen
Kev teeb tsa nrog tsis txaus fiber ntau optic cable slack yog qhov ua rau cov neeg kho tshuab tsis ua haujlwm thaum lub cable dhau los ntawm thermal cycling.Kev teeb tsa ntau dhau ntawm optical cable slack tuaj yeem ua rau congestion.
Kev tswj tsis zoo ntawm lub tais hloov pauv
Thaum cov fibers tsis tau sau npe zoo thiab xa mus rau hauv fiber ntau optic splice trays, kev daws teeb meem dhau los ua kev kwv yees. Lub koom haum tsim nyog raws li tus qauv xim code tiv thaiv qhov xwm txheej no.
Environmental sealing tsis ua haujlwm
Hla kev soj ntsuam foob, siv O-rings puas, lossis tsis tsim nyog lub zog ntawm cov khoom siv sib khi tsim txoj hauv kev rau cov dej noo thiab cov khoom paug. Cov teeb meem no feem ntau nyob twj ywm rau lub hlis kom txog thaum cov dej txaus txaus los ua kom corrosion los yog fiber ntau degradation.
Advanced Considerations for Different Environments
Fiber splice kaw kev teeb tsa sib txawv heev nyob ntawm qhov chaw xa tawm. Kev teeb tsa dav hlau ntsib qhov kub siab tshaj plaws, thauj dej khov, thiab cua- ntxias kom txav mus los. Tsim cov kev teeb tsa no nrog cov fiber ntau optic cable slack kom haum rau thermal expansion -feem ntau 0.3% ntev hloov ntawm 10℃kub viav vias.
Kev nyab xeeb dej nyab xav tau cov ntsaws ruaj ruaj thiab cov gel- cov kab nkag nkag. Qhov chaw kaw qhov siab tshaj qhov xav tau siab - dej cim thaum twg los tau. When submersion is unavoidable, use pressurized closures with monitoring systems that alert you to seal failures before water reaches splice points.
Daim ntawv thov kev faus ncaj qha yuav tsum muaj cov hlua khi hlua khi thiab kaw ruggedized. faus kaw yam tsawg kawg yog 750mm sib sib zog nqus los tiv thaiv Frost heave thiab nto loads. Nruab daim kab xev ceeb toom 300mm saum toj no kaw kom ceeb toom cov neeg khawb av ua ntej cov khoom siv puas rau kev teeb tsa.
Strand-mounted kaw rau aerial daim ntaub ntawv yuav tsum tau ntxiv mechanical kev txhawb nqa tshaj tus qauv cable lashing. Txhim kho cov kabmob uas faib qhov hnyav kaw hla ntau cov ntsiab lus txuas txuas. Qhov no tiv thaiv kev ntxhov siab uas tuaj yeem ua rau tus neeg xa xov tsis zoo lossis ua rau lub kaw kom plam raws txoj hlua.
Kev saib xyuas thiab Ntev -Lub Sij Hawm Ua Haujlwm
Kev kaw dav hlau hauv thaj chaw ntug dej hiav txwv xav tau kev tshuaj xyuas txhua 6 lub hlis vim yog ntsev tsuag corrosion, thaum kev teeb tsa hauv av hauv qhov chaw ruaj khov tsuas yog yuav tsum tau kuaj xyuas txhua xyoo.
Thaum mus saib xyuas, sau cov ntaub ntawv kaw lub cev. Saib xyuas vaj tse tawg, foob degradation, los yog cable nkag point puas, qhib qhov kaw thiab tshuaj xyuas cov xwm txheej sab hauv.
Rov- sim cov khoom tseem ceeb uas siv OTDR ntsuas. Sib piv kev ua tau zoo tam sim no nrog cov ntaub ntawv hauv paus. Poob nce siab tshaj 0.2dB qhia kev ntxhov siab, kev sib kis, lossis kev puas tsuaj ib puag ncig yuav tsum tau tshawb xyuas.
FAQ
Q: Puas yog armored cable (OPGW) xav tau kev tswj slack sib txawv piv rau tag nrho -dielectric cable (ADSS)?
A: Yog, qhov sib txawv ntawm qhov sib txawv. OPGW siv cov hlau los yog aluminium reinforcement nrog thermal expansion coefficients ntawm 11-12 × 10⁻⁶ / degree, thaum ADSS siv aramid yarns ntawm kwv yees li 4 × 10⁻⁶ / degree. Qhov no txhais tau hais tias OPGW nthuav dav / daim ntawv cog lus ze li 3 npaug ntau dua ADSS dhau qhov kub thiab txias. Rau 75-meter OPGW ncua, xam kwv yees li 1 meter slack rau 100℃qhov kub thiab txias, piv rau 35cm rau ADSS. Tsis tas li ntawd, OPGW cov qauv hlau yuav tsum muaj av ntawm cov ntsiab lus kaw, yuav tsum muaj kev cog lus hauv av uas siv qhov chaw kaw.
Q: Kuv puas yuav tsum siv cov cua sov-shrink los yog mechanical seals rau kaw uas yuav rov qab tau- nkag txhua xyoo rau kev nthuav dav?
A: Mechanical seals nrog gasket systems rau nquag re- daim ntawv thov nkag.Heat-shrink kaw muab superior waterproofing, Txawm li cas los, thaum tshav kub kub-shrink ua ib zaug xwb-siv; txhua qhov re- nkag yuav tsum tau ua kom tiav foob ntawm $30-60 rau ib qhov chaw nkag cable ntxiv rau 30-45 feeb ntxiv rau kev ntxuav thiab rov thov dua.
Q: Kuv yuav ua li cas thiaj li muaj qhov sib xyaw ua ke hauv qhov chaw kaw hauv qhov chaw siab -cov av noo ntawm ntug dej hiav txwv?
A: Ua ntej, teeb tsa cov pob ntawv desiccant ntsuas rau qhov ntim sab hauv (feem ntau 50-100 grams silica gel rau tus qauv 48- fiber ntau kaw). Qhov thib ob, siv lub tshuab ua pa kaw rau cov ntawv thov dav hlau-cov vents microporous tso cai rau dej vapor khiav thaum thaiv cov dej ua kua (nyob IP66 yam tsawg). Thib peb, ua kev teeb tsa thaum lub sijhawm tsis muaj av noo; Kev teeb tsa thaum sawv ntxov (thaum ambient humidity qis tshaj) ntxiab tsis tshua muaj dej pib.
Q: Yog tias OTDR pom qhov poob qis zuj zus (0.05dB / xyoo) ntawm qhov chaw kaw, qhov twg yuav ua rau muaj feem ntau?
A: Kev poob qis zuj zus feem ntau qhia tias muaj kev ntxhov siab ntawm fiber ntau los ntawm kev tsis txaus los yog kev puas tsuaj los ntawm thermal cycling es tsis yog ib puag ncig sealing tsis ua hauj lwm (uas ua rau poob spikes tam sim ntawd).