Overhead insulated conductor is an important power transmission line, the following is a detailed introduction:

1. Definition and Structure

Overhead insulated conductors, also known as Aerial insulation lines, are conductors with single or multiple layers of aluminum strands stranded on top of extruded insulation. It is usually composed of line towers, conductors, insulators, accessories, grounding devices, etc., erected on the ground, used for power transmission between two points of the system.

2. features and advantages

Insulation performance: The outer layer of the overhead insulated wire is wrapped with an insulating layer, which can effectively prevent the current crossing between the wires and ensure the safe operation of the power system. At the same time, it can also isolate the interaction between the power system and the environment, protect the power system from electromagnetic interference, and prevent the environment from electromagnetic pollution.
Lightning protection performance: because the lightning protection performance of insulated wire in our country is not high, in order to protect the power system from lightning, the most used is overhead insulated wire. It has good lightning protection performance and can reduce the impact of lightning on the power system.
Installation and maintenance: Overhead insulated conductors are easy to install and can be installed and adjusted in any space. At the same time, its maintenance is relatively simple, only need to regularly check the reliability of the insulation layer, bracket and joint.

3. Application Scenarios

Overhead insulated conductors play an important role in power systems, industrial production, agricultural production, urban construction and residents' lives. Specifically:

Power system: It is the main form of high-voltage power lines, used for long-distance transmission and distribution of electrical energy.
Industrial production: used to transport electricity, to ensure the normal operation of industrial production, improve production efficiency.
Agricultural production: it can realize the power supply of agricultural machinery, fertilization machinery and irrigation machinery, and improve the efficiency of agricultural production.
Urban construction: used to provide lighting, heating and communication needs, to ensure the smooth progress of urban construction.
Residents' life: it is used to provide electricity for residents' families and ensure their normal life.

4. models and specifications

Overhead insulated conductors are available in a variety of models and specifications to meet the needs of use in different scenarios. Common models are JKL, JKLY, JKLGY, etc., where JK represents overhead, L represents aluminum core, Y represents insulation, and G represents steel core. In terms of specifications, it mainly includes parameters such as cross-sectional area, conductor material, insulation material and outer sheath material. The commonly used cross-sectional areas are 10mm ², 16mm ², 25mm ², 35mm ², 50mm ², etc. Conductor materials are divided into copper wire and aluminum wire. Commonly used insulation materials are polyvinyl chloride (PVC) and cross-linked polyethylene (XLPE), etc. The outer sheath material plays a role of protection and anti-aging, and polyethylene (PE) and polyvinyl chloride (PVC) are commonly used.

5. Maintenance and Maintenance

In order to ensure the normal operation and prolong the service life of the overhead insulated wire, it is necessary to carry out regular maintenance and maintenance. Specifically include:

Check the insulation layer: especially in plateau areas or areas affected by strong winds, rain, snow and other environmental effects, it is necessary to regularly check the changes of the insulation layer, and timely supplement or replace the insulation layer.
Check the bracket: ensure that the bracket is firm and reliable to avoid accidents.
Maintenance of joints: check the reliability of joints regularly, and supplement or replace joints in time to ensure the normal operation of overhead insulated wires.

In summary, as an important power transmission line, overhead insulated conductor plays an irreplaceable role in the power system and various fields. By understanding its definition, characteristics, application scenarios and model specifications and other information, we can better select and use overhead insulated conductors, and provide a strong guarantee for the stable operation of the power system.