Overhead Line Cover – Polyolefin (Insulcover)
Gala Insulcover is a wrap-around line cover designed to provide retrofit insulation for existing bare overhead conductors. Manufactured from high-quality, non-tracking, cross-linked polyolefin material, it helps prevent electrical outages caused by trees and wildlife coming into contact with distribution lines. Gala Overhead Line Covers provide insulation enhancement for applications up to 400 kV. They are designed to insulate existing bare conductors without requiring costly conductor replacement or additional line hardware. Installation is simple and convenient using the Split Insulation Tube Tool, which remains stationary at a single location during installation.
Features & Benefits
High Dielectric Strength: Provides excellent electrical insulation.
UV Stabilized & Weather Resistant: Designed to withstand outdoor environmental conditions.
5000 Hours UV Tested: Passed 5000 hours of UV testing.
Tracking & Erosion Resistant: Helps maintain insulation performance under electrical stress.
Chemical Resistant: Protects conductors against chemical corrosion caused by strong acids, alkalis, salts and other environmental elements.
Halogen Free: Manufactured with halogen-free material.
Flame Retardant: Offers flame-retardant properties.
Wide Size Availability: Available in five sizes, covering conductors up to 800 sq. mm.
Technical Specifications
| Property | Typical Value | Test Method |
|---|---|---|
| Tensile Strength | 9 N/mm² (MPa) minimum | ASTM D638 |
| Ultimate Elongation | 250% minimum | ASTM D638 |
| Density | 1.20 ± 0.2 gm/cm³ | ASTM D792 |
| Hardness | 40 ± 5 Shore D | ASTM D2240 |
| Water Absorption | 0.5% maximum | ASTM D570 |
| Heat Shock (90°C for 4 hrs.) | No Cracking | ASTM D2671 |
| Flame Retardant | Pass | ASTM D2671 |
| Low Temperature Flexibility (-40°C for 4 hrs.) | No Cracking | ASTM D2671 |
| Continuous Temperature Limit | -45°C to +105°C | IEC 216 |
| Dielectric Strength | 20 kV/mm minimum | ASTM D149 |
| Volume Resistivity | 1 × 10¹³ Ohm.cm minimum | ASTM D257 |
| Dielectric Constant | 5 maximum | ASTM D150 |
| UV Resistance (5000 Hrs.) | No Colour Change | ASTM DG154 |
| Resistance to Tracking & Erosion | No tracking, erosion or flame failure up to 3.25 kV for 20 min. | ASTM D2303 |
Selection Chart
| Gala Code | Conductor Diameter (mm) | Packaging (Metres/Roll) |
|---|---|---|
| GOC 1 | Up to 10 | 30 |
| GOC 1A | Up to 15 | 30 |
| GOC 2 | Up to 22 | 30 |
| GOC 3 | Up to 28 | 30 |
| GOC 4 | Up to 38 | 30 |
Categories: Electrical, Overhead Line Accessories
Gala Insulcover is a wrap-around line cover designed to provide retrofit insulation for existing bare overhead conductors. Manufactured from high-quality, non-tracking, cross-linked polyolefin material, it helps prevent electrical outages caused by trees and wildlife coming into contact with distribution lines. Gala Overhead Line Covers provide insulation enhancement for applications up to 400 kV. They are designed to insulate existing bare conductors without requiring costly conductor replacement or additional line hardware. Installation is simple and convenient using the Split Insulation Tube Tool, which remains stationary at a single location during installation.