ADSS vs OPGW: Yuav Ua Li Cas Xaiv Txoj Cai Aerial Fiber Cable rau Koj Cov Hluav Taws Xob
Feem ntau ADSS vs OPGW kev sib piv qhib nrog ob lub ntsiab lus thiab kaw nrog lub rooj ntawm "qhov zoo." Lub rooj ntawd yuav tsis qhia koj qhov twg nyob ntawm koj kab.
Cov Lus Qhia
Ob kab lus cais cov kab no hauv kev xyaum. Ib tug nqa nws tus kheej qhov hnyav thiab kov tsis muaj dab tsi hluav taws xob. Ib tug hloov koj cov av xaim thiab dhau los ua ib feem ntawm lub ntiaj teb.
Yog li los ntawm no mus, phau ntawv qhia no kho qhov kev xaiv raws li peb txoj kev, tsis yog ob txoj kev.
Hloov pauv 1 - Chav Kawm Voltage thiab Qhov Kev Xav Tau Li Cas
Voltage class shapes qhov kev txiav txim los ntawm ob qho kawg: nws txiav txim siab seb OPGW xav tau kev ntsuas hluav taws xob tshwj xeeb, thiab nws txiav txim siab nyuaj npaum li cas ib puag ncig ntawm lub tsho ADSS.
Dab tsi tsuas yog OPGW coj tuaj rau lub rooj
Vim OPGW hloov cov hlau hauv av, nws txais cov khoom siv hluav taws xob ua haujlwm ntawd. Ob tus lej tswj hwm qhov tshwj xeeb, thiab tsis muaj qhov sib npaug ADSS:
Short-circuit thermal muaj peev xwm (I² t) - Ntau npaum li cas txhaum lub zog lub cable absorbs ua ntej tus neeg xyuas pib overheats thiab fibers hauv ua noj.
DC tsis kam - uas yuav tsum tau zaum ze rau hauv av xaim ntawm lwm sab ntawm kab, los yog ob qhov sib koom tam sim no tsis sib xws thiab ib qho khiav kub.
Ntawm no yog tus neeg sawv cev 48-fiber configuration peb tsim, yog li koj tuaj yeem pom cov lej no zoo li cas hauv kev xyaum:
Parameter
Tus nqi
Txhawb nqa hla ntu
64.51 mm² os
Rated Tensile zog (RTS)
71.37 txhos caug
Short-circuit thermal muaj peev xwm (I² t)
28.80 kA²·s
Lub sijhawm luv luv tam sim no (1 s, 20 ° C → 230 °C)
5.37 kA
DC tsis kam
1.161 Ω/km
Kev ntxhov siab txhua hnub (EDS)
16-25% RTS
Ua haujlwm kub
-40 ° C rau +80 °C
Cable taub / Tag nrho cov optical thiab mechanical Performance index ua tau raws li txoj hlua khi txheem
11.10 mm / 429.64 kg/km
Qhov loj ntawm cov hlau ntoo hla ntu nce ob qho tib si qhov ntsuas qhov ua txhaum thiab lub zog tensile. Cov ntu me me raug nqi tsawg thiab thauj cov pej thuam tsawg dua. Koj daim phiaj tus neeg ua haujlwm qhov kev tshawb nrhiav txhaum cai teeb tsa hauv pem teb.
Distributor's Talking Points: Thaum tus neeg siv khoom siv npe hu ua chav kawm voltage thiab nres rau ntawd, koj tseem tsis tuaj yeem hais OPGW. Nug rautxhaum tam sim no thiab clearing lub sij hawm - ob tug tsim qhov yuav tsum tau I²t - thiab nug dab tsitam sim no hauv av xaim DC tsis kam yog. Nug cov no hloov koj los ntawm tus nqi-tus neeg siv khoom mus rau hauv kev sib koom ua ke, thiab nws yuav siv ib qho lus.
Dab tsi voltage ua rau ADSS
ADSS tsis ua dab tsi, yog li qhov hluav taws xob tsis cuam tshuam nws hluav taws xob nyob rau hauv txoj kev nws stresses tus neeg xyuas pib. Kev ntxhov siab yog nyob ntawm lub tsho nto.
Nyob ze energized conductors, ib daim teb hluav taws xob tsim nyob ib ncig ntawm lub cable. Qhov chaw paug thiab noo noo ua kom pom tseeb ntawm thaj chaw ntawd rau hauv thaj ua rau me me qhuav, thiab rov ua micro-tso tawm erode polyethylene dhau sijhawm. Kev ua tsis tiav yog qeeb. Nws feem ntau tshwm sim ib mus rau peb xyoos tom qab commissioning, uas txhais tau hais tias qhov kev txiav txim siab yuav thiab qhov tshwm sim tau sib cais los ntawm ntau lub sijhawm uas tsis muaj leej twg txuas rau lawv.
Qhov kev ntsuas yogAT (tiv thaiv kev taug qab) tsho sib xyaw tsis yog tus qauv PE. Peb muab ob qho tib si, sib pauv, hauv 1.6 mm, 1.8 hli thiab 2.0 mm phab ntsa thicknesses, nrog 1.8 mm ± 0.1 hli raws li peb tus qauv.
Cov lus qhia Pro rau cov neeg yuav khoom: Nug koj tus neeg muag khoom kom paub meej, sau ntawv, lub tsho sib xyaw thiab phab ntsa tuab ntawm cov lus hais - tsis yog “ADSS kab.” Ob nqe lus uas zoo li 15% Sib nrug feem ntau yog qhov sib txawv PE-tiv-AT, thiab cov khoom pheej yig dua tsuas yog pheej yig dua kom txog rau thaum thawj zaug yaig-tsav kev kho.
Ib daim ntawv ntawm cov rooj xaiv: voltage-chav kawm cov lus pom zoo nyob hauv kev lag luam qhia txog kev coj ua, tsis yog universal law. Daim phiaj kab sib txawv nyob hauv Latin America, Africa thiab Middle East, thiab qhov project tsim lub koom haum lossis chav haujlwm hluav taws xob engineering tuav qhov kawg hais. Kho txhua lub rooj hauv phau ntawv qhia no - suav nrog peb li - ua qhov pib rau kev sib tham ntawd.
Hloov pauv 2 -Span Length, thiab Vim Li Cas Ib Zaug Tsis Muaj Lus Teb
Span yog qhov twg cov khoom lag luam ua kev puas tsuaj ntau tshaj plaws, vim lawv hais ib qhov siab kawg nkaus.
Daim duab span tsuas txhais tau tias ib yam dab tsi nrog peb lwm yam mob: cua loading, dej khov loading, thiab tso cai sag. Tib lub cable uas yooj yim hla 300 m nyob rau hauv ib qho chaw ntsiag to yuav tsis tuav tib qhov kev ncua deb hla lub roob uas pom nrog cov dej khov radial.
Rau ADSS tshwj xeeb, span muaj peev xwm los ntawm aramid los yog polyester yarn strand suav thiab lub tsho qauv - tsis yog los ntawm fiber ntau suav thiab tsis yog los ntawm txoj kab uas hla. Tias yog vim li cas span yog ib tug engineered parameter koj xaj kom, es tsis yog cov khoom ruaj khov koj saib.
Span band
Ib lub tsho ADSS
Ob lub tsho ADSS
OPGW
Hauv qab 100 m
Yooj yim
Tshaj qhia
Ua haujlwm, yog tias txoj kab xav tau av xaim lawm
100– 200 m
Standard cheeb tsam
Yooj yim
Ua haujlwm
200– 300 m
Siab txwv
Yooj yim
Ua haujlwm
300– 1000 m
Tsis muaj
Tsim rau nws
Ua haujlwm, RTS-nyob
Tshaj 1000 m
Tsis muaj
Tshwj xeeb engineering
Ua haujlwm, RTS-nyob
Peb tsim ib lub tsho ADSS rau 100 m, 150 m, 200 m thiab 300 m span ratings.300 m yog qab nthab, tsis yog hom phiaj - thiab nws poob thaum koj thawb suav fiber ntau. Ib lub tsho 288-fiber ib lub tsho tsim, piv txwv li, xav tau lub span tuav rau roughly 100 m, vim lub cev hnyav dua noj cov nyiaj txiag nro.
Distributor's Talking Points: Thaum tus neeg siv khoom hais “600 m span,” peb cov lus nug tom qab daws cov lus hais: Dab tsi yog qhov tsim cua ceev? Puas muaj dej khov? Dab tsi sag tso cai ntawm kev hla? Yog tsis muaj cov, ib qho kev cog lus ncua sij hawm yog kwv yees - thiab kev kwv yees yog dab tsi tau rov qab los.
Hloov pauv 3 - Tshiab Tsim lossis Retrofit, thiab seb koj puas tuaj yeem tua hluav taws
Qhov kev hloov pauv no txiav txim siab ntau txoj haujlwm tshaj li tus nqi ua, thiab nws faib kom huv si.
Tshiab kis kab
Ib txoj kab tshiab xav tau ib txoj kab hauv av tsis hais. Tus pej thuam raug tsim los lawm, qhov loading yog xam lawm, thiab cov neeg ua haujlwm stringing yog nyob rau ntawm qhov chaw lawm. Xaiv OPGW ntawm theem no txhais tau hais tiasnce ntxiv tus nqi tshaj ib txoj hlua hauv av yog me me - koj tab tom yuav fiber ntau, tsis yuav ib qho kev sib cais installation.
This is the strongest argument for OPGW, and it has nothing to do with the cable being “better.”
Retrofitting a line already in service
Now the arithmetic inverts. Replacing an in-service ground wire with OPGW requires taking the circuit out of service — and the outage is rarely the cheap part.
Real-World Scenario:On a live network, an outage is not a scheduling detail. It goes through a dispatch approval queue, competes with maintenance windows already booked, and may require replacement generation or rerouted load for the duration. Project teams routinely find the outage window harder to secure than the cable is to manufacture. Fifteen working days for cable delivery means very little when the switching request sits in a three-month queue.
ADSS exists largely because of this problem. Vim nws tuav tsis muaj hlau, nws tuaj yeem ntsia tau rau ntawm qhov chaw seem ntauwd yam tsis tau ua ib feem ntawm lub tshuab hluav taws xob.
Nyob rau hauv-line installation tshwj xeeb: tag nrho-dielectric kev tsim kho ua rau nws ua tau raws li txoj cai. Seb puas tau tso cai raukoj kab nyob ntawm chav kawm voltage, cov txheej txheem ua haujlwm ntawm kev siv hluav taws xob, kev tsim nyog ntawm cov neeg ua haujlwm thiab cov cuab yeej cuab tam tso cai. Kho “ADSS tuaj yeem ntsia tau nyob” raws li cov lus nug rau koj qhov chaw siv hluav taws xob kev nyab xeeb, tsis yog raws li specification koj xav tau. Peb zoo siab los muab cov ntaub ntawv cable rau koj qhov kev xav tau kev nyab xeeb; peb yuav tsis qhia koj tias txoj haujlwm muaj kev nyab xeeb ntawm kab peb tsis tau pom.
Hloov pauv 4 - Tag nrho cov nqi ntawm cov tswv cuab, Tsis Nqe Ib Meter
Nqe-ib-meter sib piv ntawm ADSS thiab OPGW yuam kev, vim ob leeg tsis yuav ib yam. OPGW tus nqi suav nrog cov xaim hauv av uas koj yuav txwv tsis pub yuav. ADSS tus nqi tsis suav nrog hauv av vim ADSS tsis yog ib qho.
Neither — do not put single-jacket into salt fog or icing
The variable this matrix cannot decide for you: fiber count
Almost no buying guide addresses fiber count, yet every purchase order requires the number.
Two principles apply. Ua ntej, build in headroom — utilities that specify only for today’s SCADA and protection traffic tend to return within a few years needing capacity for substation automation, video inspection or telecom backhaul, and a second cable pull costs far more than spare fibers ever did. Around 30% spare capacity is a common planning allowance.
Thib ob, respect the trade-off. More fibers means a heavier, thicker cable, which reduces achievable span. Our single-jacket ADSS runs 4 rau 144 fibers as standard, nrog 288 available on request when the span stays near 100 m. Double-jacket reaches 288 as standard and 576 ntawm kev thov. OPGW tops out at 96 fibers.
Cov lus qhia Pro rau cov neeg yuav khoom:Decide fiber countua ntejyou finalise the span rating, not after. Fiber count changes the cable weight, cable weight changes the tension, and tension changes the span the cable can hold. Reversing that order is how projects end up re-ordering.
Field Traps That Appear After the Cable Is Already Hanging
Both cable types have well-documented failure patterns. Neither pattern is really about the cable.
On the ADSS side
Jacket erosion from the wrong compound.Standard PE in a high-field or high-contamination position degrades. AT compound exists for this reason. The symptom appears years later, far from the purchase decision.
Aeolian vibration.A light, all-dielectric cable in steady wind oscillates. Without dampers, the fatigue concentrates at the clamps.
Single-jacket in the wrong climate.Covered above — this is a specification error, tsis yog kev tsim khoom.
Fittings xav tias yuav interchangeable. Lawv tsis yog. Ib lub tsho loj thiab ob lub tsho ADSS muaj qhov sib txawv sab nraud, yog li kev ncua thiab tuag-kawg clamps loj rau ib qho yuav tsis raug tuav rau lwm tus. Cov peev nyiaj uas nqa tus nqi cable rau pem hauv ntej tab sis rov qab siv cov khoom qub fittings tuaj luv luv.
Ntawm OPGW sab - qhov twg qhov kev ua tsis tiav tiag tiag pawg
Kev tshawb nrhiav teb tom qab luam tawm cov qauv siv hluav taws xob teeb tsa taw qhia rau tib qhov kev txiav txim siab: OPGW tsis xws luag concentrate ntawm lubdownlead thiab splice termination, tsis nyob rau hauv lub span. Cov kab nruab nrab ntawm cov yees coj zoo. Qhov kev ua tsis tiav tshwm sim hauv ob peb meters kawg, qhov twg lub cable los ntawm tus qauv thiab nkag mus rau hauv splice enclosure.
Peb mechanisms tsav nws, thiab tag nrho peb yog physics es tsis yog kev cai hauv zos:
Poob ntawm insulating clearance. Qhov twg tus downlead txhais tau tias kom nyob twj ywm meej ntawm cov qauv, aging roj hmab clamps thiab corroding stainless bands cia lub cable drift mus rau hauv kev sib cuag. Tshem tawm erosion raws li, thiab strands tawg.
Dissimilar-hlau sib cuag. Stainless hlau banding tiv thaiv txhuas hlau teeb tsa galvanic corrosion. Band ua tsis tiav, ces qhov kev them nyiaj yug tsis.
Ferromagnetic khoom nyob ib ncig ntawm coiled slack cable. OPGW nqa tam sim no tsis tu ncua thiab ua txhaum tam sim no qee zaus. Coiling slack cable nyob rau hauv ib tug steel cia ncej, los yog khi nws nrog hlau hlau, coj zoo li ntxiv cov khoom tseem ceeb rau lub transformer - inter-tig induced voltage nce thiab kub hnyiab los ntawm strands. Rwb thaiv tsev, non-magnetic cia thav duab thiab aluminium daim kab xev khi zam nws.
