Ningbo Beilun high-voltage cable wire recycling, photovoltaic cable recycling, online quotation

Cable & Wire Recycling: Second-hand power cables, communication cables, control cables, medium and low voltage power cables, high voltage cables, ultra-high voltage cables, oil-impregnated, plastic, and rubber-insulated power cables, compensating cables, shielded cables, computer cables, coaxial cables, marine cables, control cables, photovoltaic cables, industrial power cables, oil-resistant/cold-resistant/temperature-resistant/wear-resistant cables, copper busbars, busway, factory cable lines, fire-resistant cables, communication cables, marine cables, special cables, and old network cable recycling with free dismantling service.

Ningbo Beilun High-Voltage Cable Wire Recycling, Photovoltaic Cable Recycling Online Quotation

Common issues with cable lines include mechanical damage, insulation damage, insulation dampness, insulation aging and deterioration, overvoltage, and cable overheating faults. When such faults occur, the power supply to the faulty cable should be disconnected, the fault point located, and the fault inspected and analyzed. Then, repairs and tests should be conducted, removing what needs to be cut, and power can be restored only after the fault is resolved. The direct cause of cable faults is the reduction in insulation and subsequent breakdown, primarily due to: a) Overload operation—Long-term overload operation can increase cable temperature, age insulation, and lead to insulation breakdown, lowering construction quality and electrical issues such as cable head construction not meeting standards, poor sealing, moisture intrusion into the cable, and reduced insulation performance; failure to implement protective measures during cable laying, resulting in damage to the protective layer and reduced insulation. In civil engineering, issues include poor drainage in manholes and trenching, leading to long-term water浸泡 and insulation strength damage; small manholes causing insufficient cable bend radius and long-term compression damage. Mainly due to rough and aggressive construction practices in municipal projects, damaging or cutting cables. d) Corrosion—Long-term chemical or cable corrosion of the protective layer can render it ineffective and reduce insulation. Poor quality of the cable or cable head accessories, poor sealing, insulation glue dissolution, and cracking can lead to resonance phenomena at the station, which is a fault caused by line breakage. This creates a resonance circuit between the line's interphase capacitance and earth capacitance and the excitation inductance of the distribution transformer, thereby exciting ferromagnetic resonance.

【Main Categories of Wire and Cable Products:】1. Bare Conductors and Bare Conductor Products, characterized by pure conductor metals without insulation or sheath layers, such as steel-core aluminum conductors, copper-aluminum busbars, and electric locomotive wires; the main processing techniques are pressure processing, including melting, rolling, drawing, and twisting/compacted twisting; these products are primarily used in urban and rural areas, main user lines, switch cabinets, etc. 2. Power Cables, featuring insulation layers extruded (or wrapped) around the conductors, such as overhead insulated cables, or multi-core twisted cables corresponding to phase, neutral, and ground lines of the power system, like cables with more than two cores, or with additional sheath layers such as plastic or rubber-sheathed cables. The main processes include drawing, twisting, insulation extrusion (or wrapping), cable forming, armor, and sheath extrusion, with varying combinations of processes for different products. These products are mainly used for strong electrical power transmission in transmission and distribution lines, with high currents (tens to thousands of amperes) and voltages (220V to 500kV and above).