Classification los ntawm Voltage Level
Cov hluav taws xob hluav taws xob tuaj yeem raug faib los ntawm qib voltage mus rau hauv nruab nrab- thiab qis-voltage cables (35 kV thiab qis dua), siab -voltage cables (siab tshaj 110 kV), ntxiv- siab-voltage cables (275–800 kV), thiab ultra{0{0} voltage cables (275-800 kV), thiab ultra{0{9} siab thiab saum toj no). Tsis tas li ntawd, lawv tuaj yeem raug cais los ntawm hom tam sim no rau hauv AC cables thiab DC cables.
Kev faib tawm los ntawm cov khoom siv rwb thaiv tsev
1. Roj-impregnated ntawv insulated fais fab cables: Cov cables no siv roj-impregnated ntawv li rwb thaiv tsev. Lawv muaj keeb kwm ntev tshaj plaws ntawm daim ntawv thov thiab muaj kev nyab xeeb, txhim khu kev qha, ruaj khov, thiab tus nqi- zoo. Lawv qhov teeb meem tseem ceeb yog qhov kev teeb tsa raug txwv los ntawm qhov sib txawv ntawm qhov siab (tej qhov siab). Txoj kev loj hlob ntawm cov ntaub ntawv uas tsis yog-draining impregnated ntawv rwb thaiv tsev daws qhov kev txwv no, cia cov roj-impregnated ntawv cables nyob rau hauv dav siv.
2. Yas insulated fais fab cables: Cov cables no muaj ib txheej rwb thaiv tsev ua los ntawm cov yas extruded. Cov yas siv feem ntau suav nrog polyvinyl chloride (PVC), polyethylene (PE), thiab ntoo khaub lig- txuas polyethylene (XLPE). Yas cables muaj cov qauv yooj yim, yooj yim rau kev tsim thiab nruab, yog lub teeb yuag, thiab tsis txwv los ntawm qhov siab sib txawv thaum lub sij hawm installation. Yog li ntawd, lawv tau dav siv rau nruab nrab- thiab qis- cov ntawv siv hluav taws xob thiab tab tom hloov mus rau kev hloov cov roj viscous-impregnated ntawv cables. Lawv thawj qhov tsis zoo yog qhov tshwm sim ntawm "ntoo" (tsim hluav taws xob) ua rau dielectric tawg, uas txwv tsis pub lawv siv ntawm cov hluav taws xob ntau dua.
3. Roj hmab insulated fais fab cables: Cov txheej rwb thaiv tsev muaj cov roj hmab sib xyaw nrog ntau yam khoom ntxiv; Cov tshuaj no yog sib xyaw kom huv si, extruded mus rau tus neeg xyuas pib, thiab tom qab ntawd kho (vulcanized) hauv qab cua sov. Cov cables no hloov tau yooj yim thiab elastic, ua rau lawv haum rau daim ntaub ntawv uas yuav tsum tau nquag txav los yog installation nrog nruj bending radii.
Cov khoom siv roj hmab uas siv rau kev rwb thaiv tsev muaj xws li cov roj hmab ntuj / styrene-butadiene roj hmab (SBR) sib tov, ethylene-propylene roj hmab (EPR), thiab butyl roj hmab.
Classification los ntawm Voltage Level
1. Tsawg-voltage cables: Tsim nyog rau kev teeb tsa ruaj khov ntawm AC 50Hz fais fab kis thiab cov kab xa tawm nrog cov ntsuas hluav taws xob ntawm 3 kV lossis qis dua.
2. Nruab nrab- thiab qis-voltage cables (feem ntau xa mus rau 35 kV thiab hauv qab): suav nrog PVC insulated cables, PE insulated cables, XLPE insulated cables, thiab lwm yam.
3. High-voltage cables (feem ntau 110 kV thiab siab dua): polyethylene cables, cross-linked polyethylene (XLPE) insulated cables, thiab lwm yam.
4. Ntxiv- siab- cov kab hluav taws xob (275–800 kV).
5. Ultra-siab- hluav taws xob cables (1000 kV thiab siab dua).