Why Choose Solar DC Cables for Solar Power Stations? What is the difference between Normal DC cables and Solar DC cables?

        In most cases, the DC cables used in solar power stations are used for outdoor long-term work. Due to the limitation of construction conditions, connectors are mostly used for cable connection. Cable conductor materials can be divided into copper core and aluminum core. Copper core cable has better oxidation resistance than aluminum, long life, good stability, low voltage drop and low power loss; in construction, because the copper core is flexible and the allowable bend radius is small, it is convenient to turn and pass through the pipe; and the copper core is resistant to fatigue and repeated bending is not easy to break, so the wiring is convenient; at the same time, the copper core has high mechanical strength and can withstand greater mechanical tension, which brings great convenience to construction and laying, and creates conditions for mechanized construction. On the contrary, aluminum core cables are prone to oxidation (electrochemical reaction) in the installation joints due to the chemical properties of aluminum materials, especially creep phenomena, which can easily lead to failures.

What is the difference between Normal DC cables and Solar DC cables?

        During the installation and operation and maintenance of solar power stations, cables may be routed in the soil below the ground, overgrown with weeds and rocks, on sharp edges of the roof structure, and exposed to the air. The cables may bear various external forces. If the cable sheath is not strong enough, the cable insulation layer will be damaged, which will affect the service life of the entire cable, or cause short-circuit, fire, and personal injury hazards. Cable scientific research and technical personnel found that the material cross-linked by radiation has higher mechanical strength than before radiation treatment. The cross-linking process changes the chemical structure of the polymer of the cable insulation sheath material, the fusible thermoplastic material is converted to non-fusible elastomeric material, and the cross-linking radiation significantly improves the thermal, mechanical and electrical properties of the cable insulation material. Chemical properties.

The DC loop is often affected by a variety of unfavorable factors during operation, resulting in grounding, making the system unable to operate normally. Such as extrusion, poor cable manufacturing, unqualified insulation materials, low insulation performance, aging of the DC system insulation, or certain damage defects that can cause grounding or become a grounding hazard.