Brief Introduction to JKLYJ Cable
Full Name and Definition
The full name of JKLYJ cable is Aluminum Core Cross-Linked Polyethylene Insulated Overhead Cable( J: Overhead Cable; K: Armoring (optional); L: Aluminum Core; YJ: Cross-Linked Polyethylene Insulation). It is a type of cable suitable for overhead power lines with a rated voltage of 10kV and below, commonly used in outdoor power transmission and distribution systems, especially in urban and rural power grid renovations.
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Structural Features
Conductor:Made of aluminum core (L)or aluminum alloy core, which is lightweight, low-cost, and has stable conductivity, meeting the dual requirements of mechanical strength and electrical conductivity for overhead lines.
Insulation Layer: Uses cross-linked polyethylene (XLPE) material. Compared with ordinary polyethylene (PE), it has higher heat resistance (long-term operating temperature up to 90°C), stronger mechanical strength, and better aging and corrosion resistance, making it suitable for outdoor environments.
Structural Forms:
Single-core (JKLYJ):Often used in high-voltage lines or special single-phase systems.
Multi-core (e.g., JKLYJ-3×120): Suitable for three-phase four-wire low-voltage distribution systems, simplifying the layout of overhead lines.
Some models are equipped with an armor layer (K) to further enhance resistance to external forces (e.g., mechanical tension, rodent and insect damage).
Main Technical Parameters
Voltage Classes: Common classes include 0.6/1kV (low voltage), 3.6/6kV, and 6/10kV (medium voltage)
Conductor Cross-Sectional Area: Ranges from 16mm² to 400mm², selected based on power transmission capacity.
Mechanical Properties:Tensile strength of aluminum core: ≥160MPa;
Tensile strength of aluminum alloy core: up to 200–300MPa, suitable for long-span overhead installation.
Environmental Adaptability:
Operating temperature: -40°C–90°C;
Weather resistance: Resistant to UV radiation, rain, and snow, with a service life of over **20 years.
