Glavna sirovina kabla je provodnik, a cijena bakra i aluminija je vrlo različita. Stoga je cijena bakarnih kablova istog poprečnog{0}}presjeka nekoliko puta veća od cijene aluminijumskih kablova.
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.
Nestabilnost kabelskog spoja s aluminijskom jezgrom će uzrokovati oksidacijsku reakciju sa zrakom, što će rezultirati povećanjem otpora provodnika kabela, uzrokujući zagrijavanje vodiča i izazivanje nezgode, dok je spoj kabela s bakrenom jezgrom stabilniji i neće uzrokovati nesreću zbog oksidacije. Stabilnost je mnogo veća nego kod kablova sa aluminijumskim jezgrom. I temperatura grijanja je niska. Pod istom strujom, vrijednost grijanja kabela s bakrenim jezgrom istog poprečnog presjeka je mnogo manja od one kod kabela s aluminijskom jezgrom, što čini rad sigurnijim.
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.
Iz gornje situacije, bakreni kabel ima prednosti niske otpornosti, dobre duktilnosti, dobre elastičnosti, dobre otpornosti na oksidaciju i velikog kapaciteta nosivosti struje, te ima izvanredne prednosti u napajanju kabela. Naravno, aluminijski kablovi imaju i svoje prednosti. Cijena je relativno jeftina i lakša. Sa ekonomske tačke gledišta, ako se radi o privremenoj liniji, mogu se koristiti aluminijumski kablovi.
