Why Choose Volsun RUBNS-OLC Snap-On Silicone Rubber Overhead Line Insulation Cover?

In high-voltage power distribution, the safe operation of overhead lines is crucial. So, what makes Volsun silicone rubber snap-on overhead line cover an ideal insulation solution for medium- and high-voltage overhead lines?

Excellent Weather Resistance and Insulation Protection

The Volsun RUBNS-OLC snap-on silicone rubber overhead line insulating cover is made from high-quality silicone rubber and offers excellent all-around protection. It can operate continuously in temperatures ranging from -50°C to 150°C, remaining flexible and crack-free in extreme cold and resisting cracking in high temperatures, making it ideal for both extreme cold and high-temperature environments. Furthermore, the overhead line insulating sleeve cover offers excellent weather resistance, aging resistance, and corrosion resistance, as well as hydrophobicity migration properties. Even with long-term outdoor exposure, its performance remains unchanged, extending its service life far beyond that of ordinary tubing.

Easy Installation

This overhead line conductor cover features a snap-on design, eliminating the need for hot work. Simply slide it over the bare conductor, and secure with silicone rubber sealant and cable ties. This design reduces installation time per conductor by 60%, significantly reducing power outage duration. It is particularly suitable for outage-sensitive locations such as substations and rail transit.

Excellent Electrical and Mechanical Performance

In terms of electrical and mechanical performance, this overhead line cover features an electrical strength of ≥20kV/mm and a volume resistivity of ≥1×10¹⁴Ω·cm, effectively increasing safety distances and preventing tracking. It also boasts a tensile strength of ≥4.0MPa and an elongation at break of ≥200%. It is flexible and bend-resistant, ensuring no damage to the cable conductor during installation and easily adapting to complex wiring environments.

A comprehensive range of specifications and customization options are available for a wide range of applications.

RUBNS-OLC silicone overhead line insulation cover is available in standard sizes from Ø12 to Ø39.8mm, suitable for aluminum stranded wire and steel-core aluminum stranded wire from 50 to 800mm². Custom sizes are also available. Wall thickness can be flexibly customized based on voltage level, for example, 2.0mm for 10kV and 6.0mm for 220kV, precisely matching different insulation requirements.

In the power distribution sector, it can be used to insulate aluminum stranded wire and steel-core aluminum stranded wire in substations. In rail transit, it's suitable for protecting high-speed rail and subway cable lines. In industrial plants, it protects power cables and equipment terminals in workshops. Outdoors, it's used to reinforce the insulation of overhead cables and streetlight lines. It provides stable and reliable protection in environments with humidity, dust, and wide temperature fluctuations.

Free samples are available. 

Choose Volsun silicone rubber insulating cover sleeve for efficient and reliable overhead line protection.