Cold-shrinkable cable accessories are a kind of prefabricated cable accessories that can be constructed at room temperature without heating. The cold-shrinkable power cable accessories are made of imported liquid silicone rubber. After installation, they always maintain a proper radial pressure on the cable body. The interface characteristics are relatively good, and there will be no creepage breakdown due to cable operation. The stress control part is integrated with the main insulation, which effectively solves the problem of electric stress concentration at the outer shielding section of the cable and ensures reliable insulation. It is a very important cable accessory.
1.The basic requirements of cold shrinkable cable accessories:
1). Good electrical conductivity, reliable insulation, high enough mechanical strength, good sealing function, anti-corrosion, flame retardant, and excellent thermal function.
2). The main requirement is that the connection resistance is small and the connection is stable, so that it can withstand the impact of the faulty current.
3). After long-term operation, the touch resistance should not be 1.2 times greater than the resistance of the cable core body with the same length.
4). It should have certain mechanical strength, vibration resistance, and corrosion resistance.
- What are the importance of cold-shrinkable cable accessories in the cable line?
1). Cable accessories are an indispensable part of the cable circuit, and together they are also the thinnest link in all circuits;
2). The quality of cable accessories has important implications for the safe operation of all cable lines;
3). When installing and manufacturing cable accessories, it does not damage the original insulation, sealing and shielding of the cable;
4). The function of the cable accessory is the original conductive core of the rehabilitation cable, rehabilitation insulation, shielding, shutdown protection and other functions.