JKLGYJ-10kv-50/8 overhead insulated line manufacturer in Xinzheng City

Description :

　　JKLGYJ-10KV-50/8 overhead insulated line manufacturer in Xinzheng City

　　 An overhead line is relative to a cable, which refers to a line in which wires are erected at a certain height by towers to transmit electrical energy. For high-voltage transmission and distribution network overhead lines, the ground insulation is generally done through air. In the past, distribution lines (except for 380V below 10kV) generally used bare wires. However, due to the complex distribution environment in urban areas, short-circuit grounding and lightning strikes often occur, resulting in reduced power supply reliability. Therefore, currently, insulated wires (i.e. the outer layer of the wire is wrapped with insulation) are generally used for overhead lines below 10kV. This is called insulated overhead line insulated cables, often referred to as overhead insulated wires, also known as overhead insulated wires. Below are the main characteristics of overhead insulated conductors.

　　1) Good insulation performance

　　Due to the additional insulation layer, overhead insulated conductors have superior insulation performance compared to bare conductors, which can reduce the distance between lines, lower the insulation requirements for supporting components, and increase the number of circuits installed on the same pole.

　　2) Good anti-corrosion performance

　　Due to the insulation layer on the outer layer, overhead insulated wires are less susceptible to oxidation and corrosion than bare wires, and have stronger corrosion resistance, which can extend the service life of the line.

　　3) Prevent external damage

　　Reduce the impact of external factors such as trees, floating metal film, and dust, and minimize phase to phase short circuits and grounding accidents.

　　4) Strength meets the requirements

　　Although the insulated wire lacks a steel core, it is tough and enables the mechanical strength of the entire wire to meet the requirements of stress design.

　　The main characteristics of overhead insulated conductors are:

　　Good insulation performance. Due to the addition of an insulation layer, overhead insulated conductors have superior insulation performance compared to bare conductors, which can reduce the distance between lines, lower the insulation requirements for line supports, and increase the number of circuits installed on the same pole.

　　Good anti-corrosion performance. Due to the insulation layer on the outer layer, overhead insulated wires are less susceptible to oxidation and corrosion than bare wires, and have stronger corrosion resistance, which can extend the service life of the line.

　　Prevent external damage, reduce the influence of external factors such as trees, flying objects, metal films, and dust, and minimize phase to phase short circuits and grounding accidents.

　　The strength meets the requirements. Although the insulated wire lacks a steel core, it is tough and makes the mechanical strength of the entire wire meet the requirements of stress design.

　　Specification of 2 overhead insulated conductors

　　Line heart. There are two types of overhead insulated conductors: aluminum core and copper core. In the distribution network, aluminum core is widely used, mainly because aluminum is relatively light and cheap, with low requirements for line connectors and supports. In addition, the original distribution lines mainly use steel core aluminum stranded wires, and the use of aluminum core wires is convenient for connecting with the original network. Aluminum core wire is also commonly used in practical applications. Copper core wires are mainly used as down conductors for transformers and switchgear.

　　Insulation material. There are two types of insulation protection layers for overhead insulated conductors: thick insulation (3.4mm) and thin insulation (2.5mm). Thick insulation allows frequent contact with trees during operation, while thin insulation only allows short-term contact with trees. The insulation protection layer is divided into cross-linked polyethylene and lightweight polyethylene, with cross-linked polyethylene having better insulation performance. Commonly used 10kV overhead insulated conductors.

　　3. Installation method of overhead insulated wires

　　Conventional single laying method. This installation method uses conventional cement poles, iron accessories, and ceramic insulator accessories with bare conductors, and is more suitable for the renovation of old lines and areas with sufficient corridors.

　　Single laying uses specially designed insulation brackets to suspend wires, which can increase the number of circuits installed, save line corridors, and reduce the unit cost of the line.

　　JKLGYJ-10kv-50/8 overhead insulated conductor manufacturer in Xinzheng City

　　1kv/10kv/35kV strip steel insulated overhead line, 35kV all aluminum insulated overhead line - comply with standard QB/DZ2020-01-2020

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• Overhead insulated wire