Kaabli põhitooraine on juht ning vase ja alumiiniumi hind on väga erinev. Seetõttu on sama ristlõikega{0}}vaskkaablite hind mitu korda kõrgem kui alumiiniumkaablitel.
The difference in electrical conductivity, the resistance of the aluminum core cable is about 1.68 times higher than that of the copper core cable, while the resistivity of the copper core cable is relatively low. The conductivity of copper core cables is generally higher than that of aluminum core cables.
Compared with aluminum cables, copper cables have better ductility, and metals have good ductility, such as gold, platinum, copper, silver, tungsten, and aluminum. percent , the elongation rate of copper for electrical use is above 30 percent .
Due to the difference in characteristics of copper and aluminum, copper cables have good fatigue resistance, are not easily broken by repeated bending by hand, and have good fatigue strength, while aluminum is easily broken. In terms of elasticity index, copper is about 1.71.8 times higher than aluminum. The elasticity of the copper core cable is much higher than that of the aluminum core cable. It is not easy to break after repeated bending, and has better flexibility. The core cable has high mechanical strength, can withstand greater external force damage, and provides greater convenience in the construction process.
Alumiiniumist südamikuga kaabliühenduse ebastabiilsus põhjustab oksüdatsioonireaktsiooni õhuga, mille tulemuseks on kaablijuhtme takistuse suurenemine, mis põhjustab juhtme kuumenemist ja õnnetuse, samas kui vasest südamikuga kaabliühendus on stabiilsem ja ei põhjusta oksüdatsiooni tõttu õnnetust. Stabiilsus on palju kõrgem kui alumiiniumist südamikuga kaablitel. Ja küttetemperatuur on madal. Sama voolu all on sama ristlõikega vasksüdamikuga kaabli kütteväärtus palju väiksem kui alumiiniumist südamikuga kaablil, mistõttu on töö ohutum.
If a copper cable is used, the same current flows through the same section due to the lower resistivity of the copper core cable. The voltage drop of copper core cable is small. In the same power transmission distance, the copper core cable can ensure higher voltage quality; under the condition of allowable voltage drop, the copper core cable can transmit power to a longer distance, that is, the power supply coverage area is large, which is conducive to the planning of the network and reduces the Set number of power supply points. The resistance of aluminum core cable is higher, and its performance is much lower than that of copper core cable.
Ülaltoodud olukorrast lähtudes on vasksüdamikuga kaabli eelisteks madal takistus, hea plastilisus, hea elastsus, hea oksüdatsioonikindlus ja suur voolukandevõime ning sellel on silmapaistvad eelised kaabli toiteallikas. Muidugi on alumiiniumkaablitel ka omad eelised. Hind on suhteliselt odav ja kergem. Majanduslikust seisukohast, kui tegemist on ajutise liiniga, võib kasutada alumiiniumkaableid.
