Materyèl prensipal la anvan tout koreksyon nan kab la se kondiktè a, ak pri a nan kòb kwiv mete ak aliminyòm se trè diferan. Se poutèt sa, pri a nan câbles kòb kwiv mete ak menm kwa -seksyon an se plizyè fwa pi wo pase sa yo ki nan câbles aliminyòm.
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.
Enstabilite nan jwenti a aliminyòm nwayo kab pral lakòz yon reyaksyon oksidasyon ak lè a, sa ki lakòz yon ogmantasyon nan rezistans nan kondiktè a kab, sa ki lakòz kondiktè a chofe ak lakòz yon aksidan, pandan y ap jwenti a kab nwayo kòb kwiv mete pi estab ak pa pral lakòz yon aksidan akòz oksidasyon. Estabilite a pi wo pase sa yo ki nan câbles nwayo aliminyòm. Ak tanperati chofaj la ba. Anba aktyèl la menm, valè chofaj kab nwayo kwiv la ak menm seksyon an pi piti anpil pase sa yo ki nan kab nwayo aliminyòm, sa ki fè operasyon an pi an sekirite.
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.
Soti nan sitiyasyon ki anwo a, kab nwayo kwiv la gen avantaj ki genyen nan rezistans ki ba, bon duktilite, bon elastisite, bon rezistans oksijèn, ak gwo kapasite aktyèl. Li gen avantaj eksepsyonèl nan ekipman pou pouvwa kab. Natirèlman, câbles aliminyòm tou gen avantaj pwòp yo. Pri a se relativman bon mache ak pi lejè. Soti nan yon pwen de vi ekonomik, si li se yon liy tanporè, câbles aliminyòm yo ka itilize.
