Power cable q

Q represents lead sheath inner sheath

What are wires and cables？

There is no strict boundary between "wire" and "cable".    Generally, the products with small number of cores, small diameter and simple structure are called wires. The ones without insulation are called bare wires, and the others are called cables.    Larger conductor cross-section (more than 6 mm2) is called large wire, smaller conductor cross-section (less than or equal to 6 mm2) is called small wire, and insulated wire is also called cloth wire.   

 Meaning of letters and numbers in wire and cable models

1. The cable model is divided into four parts. The first part expresses the cable category, insulation structure, conductor material, inner sheath category, structural characteristics, armor layer category and outer sheath category.    2. The second number part represents the type of armor layer and the outer layer: the first number represents the type of armor layer, and the second number represents the type of outer layer.    3. For example, YJLV22-3X 120-10-300 refers to aluminum core, cross-linked polyethylene insulation, PVC inner sheath, double steel strip armor, PVC outer coating, and three-core 120mm ²、 Power cable with voltage of 10kV and length of 300m.

Power cable application classification

1. Power system：The wire and cable products used in the power system mainly include overhead bare wires, bus bars (bus bars), power cables (plastic cables, oil-paper power cables (basically replaced by plastic power cables), rubber sheathed cables, overhead insulated cables), branch cables (replacing part of the bus bars), electro-magnetic wires and electrical equipment wires and cables for power equipment.    2. Information transmission syste：It mainly includes local telephone cable, television cable, electronic cable, radio frequency cable, optical fiber cable, data cable, electromagnetic cable, power communication cable or other composite cables.    3. Mechanical equipment, instrumentation system：This part is applied to almost all other products except overhead bare wires, but mainly power cables, electromagnetic cables, data cables, instrument cables, etc.