Aerial insulation line

Dingyi
Conductor with extruded insulating layer of aluminium strand
Use
Urban distribution
Definition: Conductors with one or more layers of aluminium strands stranded on top of extruded insulating layers
The so-called overhead line is relative to the cable, that is, the tower will be erected by the wire at a certain height to transmit electricity line. For HV transmission and distribution network overhead lines, air is generally used for ground insulation, and bare conductors are usually used in previous distribution lines (except 380V below 10kV). However, due to the complex distribution environment in urban areas, short-circuit grounding and lightning strikes often occur, resulting in lower reliability of power supply. So at present, insulated conductors (i.e., outer layer of conductors wrapped insulation) are generally used in overhead lines below 10kV. Edge layer), this is the so-called insulated overhead line.
Overhead lines can be divided into low voltage and high voltage. Generally, there are many types of overhead lines. For example, for street lamps, JKLYJ*10KVA*50*100 shows the voltage, type, material, cross-sectional area and length of the core of overhead lines.