Classification los ntawm Voltage Level
Raws li qib voltage, fais fab cables tau categorized rau nruab nrab- mus rau- low voltage cables (35 kV thiab hauv qab), high-voltage cables (siab tshaj 110 kV), ntxiv-high voltage cables (275–800 kV), thiab ultra{{8}1}0 kV (siab tshaj) cables. 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 Paper Insulated Power Cables: Cov cables no siv roj-impregnated ntawv raws li lawv qhov nruab nrab insulating. Lawv khav theeb keeb kwm ntev tshaj plaws ntawm daim ntawv thov ntawm cov cable hom. Lawv muaj kev nyab xeeb, txhim khu kev qha, muab lub neej ua haujlwm ntev, thiab raug nqi - zoo. Lawv qhov teeb meem tseem ceeb yog tias lawv cov kev teeb tsa raug txwv los ntawm qhov sib txawv ntawm qhov siab (lub taub hau). Txawm li cas los xij, nrog kev txhim kho ntawm tsis yog- tso dej (tsis yog -dripping) impregnated ntawv rwb thaiv tsev, qhov kev txwv no hais txog qhov sib txawv ntawm qhov siab tau raug daws, tso cai rau cov roj-impregnated ntawv insulated cables mus txuas ntxiv txaus siab rau daim ntawv thov dav.
2. Plastic Insulated Fais Fab Cables: Cov cables no muaj cov txheej txheem insulating uas muaj 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 khoom thiab txheej txheem, yog lub teeb yuag, yooj yim rau kev teeb tsa, thiab tsis raug txwv rau qhov sib txawv ntawm qhov siab ntawm qhov sib txawv. Yog li ntawd, lawv tau dav siv los ua qhov nruab nrab - mus rau - cov kab hluav taws xob tsawg thiab qhia txog kev hloov pauv cov roj viscous - cov ntawv tsis muaj hluav taws xob. Lawv qhov teeb meem tseem ceeb tshaj plaws yog qhov cuam tshuam rau "ntoo tawg" phenomena, uas txwv lawv daim ntawv thov nyob rau theem siab dua.
3. Roj Hmab Insulated Fais Fab Cables: Cov txheej insulating ntawm cov cables no muaj cov roj hmab sib xyaw nrog ntau cov khoom sib xyaw ua ke; Qhov sib tov no yog sib xyaw kom huv si, extruded tshaj cov tub ntxhais conductive, thiab tom qab ntawd kho los ntawm cua sov (vulcanization). Cov cables no yog mos thiab elastic heev, ua rau lawv haum rau cov ntawv thov uas nquag txav los yog xav tau me me bending radii thaum lub sij hawm installation.
Feem ntau siv cov roj hmab sib txuas rau rwb thaiv tsev muaj xws li cov roj hmab ntuj -styrene-butadiene roj hmab (SBR) blends, ethylene-propylene roj hmab (EPR), butyl roj hmab, thiab lwm yam.
Kev faib tawm los ntawm Voltage Level (Nyeem)
1. Tsawg-Voltage Cables: Tsim nyog rau kev teeb tsa ruaj khov hauv cov xaim hluav taws xob thiab cov kab xa tawm ua haujlwm ntawm AC zaus ntawm 50 Hz thiab qhov ntsuas hluav taws xob ntawm 3 kV lossis qis dua, siv rau kev xa hluav taws xob hluav taws xob.
2. Nruab nrab-rau-Low Voltage Cables (feem ntau xa mus rau 35 kV thiab hauv qab): suav nrog polyvinyl chloride (PVC) insulated cables, polyethylene (PE) insulated cables, cross-txuas polyethylene (XLPE) insulated cables, thiab zoo xws li cov kab hluav taws xob zoo sib xws{1{5} kV thiab saum toj no): polyethylene cables, cross-txuas polyethylene (XLPE) insulated cables, thiab lwm yam.
4. Ultra-siab- voltage cables (275–800 kV).
5. Ntxiv- siab- cov kab hluav taws xob (1000 kV thiab siab dua).
