Why Choose Silicone Rubber Overhead Line Cover (RUBNS-OLC) for Power Grid Safety?

In modern electrical power distribution, ensuring the safety and reliability of overhead lines is a top priority for utility companies and engineers. Environmental factors such as heavy rain, wind, high UV exposure, and wildlife interference frequently threaten grid stability. To combat these challenges, Volsun has developed the RUBNS-OLC Silicone Rubber Overhead Line Cover—an advanced, durable, and cost-effective insulation solution designed to protect power networks and increase safe distances between objects and cables.

What is the RUBNS-OLC Silicone Rubber Overhead Line Cover?

The RUBNS-OLC is an engineered line cover manufactured from high-quality silicone rubber. Unlike traditional rigid insulation materials, silicone rubber offers superior mechanical properties, flexibility, and environmental resistance. It is specifically designed for the insulation protection of overhead cables and wires in various voltage classes.

Key Performance Specifications

· Operating Temperature: Continuously performs under extreme temperatures ranging from -50C to +150C.

· Electrical Strength: ≥ 20kV/mm (tested per GB/T 1408.1-2006).

· Volume Resistivity: ≥ 1 x 1014 Ω.cm.

· Hardness: $70 \pm 5\text{A}$ (Shore Hardness)

· Voltage Applicability: Suitable for various power ratings, including ≤10kV, ≤35kV, ≤110kV, and ≤220kV systems with customized wall thicknesses.

Core Advantages and Features

1. Superior Weather & Track Resistance

The high-grade silicone material features excellent hydrophobicity and hydrophobic migration, preventing tracking and flashovers even in heavily polluted or coastal environments.

2. Soft, Fold-Resistant, and Anti-Aging

Designed to resist UV radiation, ozone, and chemical corrosion, ensuring a long operational service life without cracking or degrading.

3. No-Fire Installation

One of the greatest operational benefits of RUBNS-OLC is that it requires no fire needed during construction, drastically reducing installation time and labor costs.

4. High Mechanical Performance

Boasts a tensile strength of ≥ 4.0MPa before heat aging and excellent low-temperature flexibility (no cracks down to -50C.

Application and Versatile Sizing

RUBNS-OLC is widely applied to various types of aluminum stranded wires and steel-core aluminum stranded wires. Volsun provides comprehensive sizing matrices to match precise industrial standards, including:

· LG Type Aluminum Stranded Wires (Cross-sectional areas from 50mm2 up to 630mm2 and above).

· LGJ & LGJF Type Steel Core / Anti-corrosion Steel Core Wires.

· Special sizes and custom packaging can also be tailored upon request.

Investing in high-performance insulation like the Volsun RUBNS-OLC Silicone Rubber Overhead Line Cover minimizes maintenance costs, prevents unexpected power outages, and safeguards electrical infrastructure against harsh weather and environmental hazards.

Are you looking for reliable overhead line protection solutions for your upcoming projects? Contact Volsun to request a datasheet, get a custom quote, or discuss your technical requirements right now.