Is é príomh-amhábhar an chábla an seoltóir, agus tá praghas copar agus alúmanam an-difriúil. Mar sin, tá praghas na gcáblaí copair a bhfuil an trasghearradh céanna acu arís agus arís eile níos airde ná praghas na gcáblaí alúmanaim.
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.
Cuirfidh éagobhsaíocht an chomhpháirteach croí-chábla alúmanaim faoi deara imoibriú ocsaídiúcháin leis an aer, rud a fhágann go dtiocfaidh méadú ar fhriotaíocht an tseoltóra cábla, rud a fhágann go mbeidh an seoltóir ag teas suas agus ina chúis le timpiste, agus tá an comhpháirteach cábla croí copair níos cobhsaí agus ní bheidh sé ina chúis le timpiste mar gheall ar ocsaídiú. Tá cobhsaíocht i bhfad níos airde ná mar a bhaineann le cáblaí croí alúmanaim. Agus tá an teocht teasa íseal. Faoin sruth céanna, tá luach téimh an chábla croí copair leis an gcuid céanna i bhfad níos lú ná an cábla croí alúmanaim, rud a fhágann go bhfuil an oibríocht níos sábháilte.
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 transmission distance, the copper core cable can ensure higher voltage quality; under the condition of the allowable voltage drop, the copper core cable can transmit energy 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.
Ón staid thuas, tá na buntáistí a bhaineann le friotachas íseal, insínteacht mhaith, dea-leaisteachas, friotaíocht ocsaigine maith, agus cumas iompair reatha mór ag an gcábla croí copair. Tá buntáistí den scoth aige i soláthar cumhachta cábla. Ar ndóigh, tá a gcuid buntáistí féin ag cáblaí alúmanaim freisin. Tá an praghas sách saor agus níos éadroime. Ó thaobh eacnamaíoch, más líne sealadach é, is féidir cáblaí alúmanaim a úsáid.
