This paper first explains why photovoltaic cable is called another outdoor cable different from ordinary outdoor cable. Copper clad steel strand introduces the structure of photovoltaic cable, and explains the main technical indexes of photovoltaic cable according to foreign photovoltaic cable standards, especially long-term resistance

Tinned copper wire is mainly used for rubber insulated mining cable, flexible wire, copper-clad steel strand flexible cable and marine cable as conductive wire core, as well as external shielding braid and brush wire of cable. Copper tin plating can prevent the insulation rubber from sticking, the wire core from blackening and embrittlement, and improve its weldability. Therefore, tinned copper wire can prevent oxidation-reduction reaction and produce copper green; Can increase heat dissipation; It can improve conductivity and conductor performance.

Copper clad steel strand copper clad steel strand copper clad steel strand copper clad steel strand copper clad steel (copper clad steel), that is, copper clad steel core. In fact, the surface of the steel core is uniformly covered with a certain thickness of pure copper metal composite wire. It uses the skin effect principle of low-voltage high-frequency signal to walk along the surface in the high-frequency region. Therefore, as long as the copper layer reaches a certain thickness range, the signal of a certain frequency band can be transmitted. The function of copper is to conduct weak electric signals; The prison is full of tears. The shrimps and apes burn their heads with the help of Congcong's cutting. They escape from suspicion of fiber marriage.

Copper clad steel strand is made of a certain number of copper clad steel single wires. Copper clad steel, as its name implies, is a composite wire wrapped with a copper layer around the steel wire. It uses the skin effect of low-voltage and high-frequency signals to walk along the surface in the high-frequency region. Therefore, as long as the thickness of the copper layer reaches a certain range, the signal in a certain frequency band can be transmitted. Copper plays a role in transmitting weak current signals, while steel wire plays a supporting role. According to the different methods of copper wrapping to steel wire, it is mainly divided into electroplating, coating, hot casting / immersion and electroforming. The product not only has the strength and toughness of steel, but also has the good conductivity and corrosion resistance of copper. Compared with copper single wire, it has the advantages of low density, high strength and low cost. It is a new generation of traditional pure copper single wire.

Copper clad steel strand copper clad steel (copper clad steel), that is, copper clad steel core. In fact, the surface of the steel core is uniformly covered with a certain thickness of pure copper metal composite wire. It uses the skin effect principle of low-voltage high-frequency signal to walk along the surface in the high-frequency region. Therefore, as long as the copper layer reaches a certain thickness range, the signal of a certain frequency band can be transmitted. The function of copper is to conduct weak electric signals; The role of steel core is to support. Traditionally, the same clad steel grounding wire generally adopts pure copper wire or galvanized steel, but the conductivity and service life of galvanized steel are far less than that of pure copper wire. However, the disadvantage of pure copper wire is high cost, which is not as