Overhead Line Cover - Silicone - Self-locking
Gala Silicon Overhead Line Covers are made from high quality non-tracking silicon rubber that are designed for field installation over bare conductors. These covers provide a layer of electrical insulation for Phase-to-Phase and Phase-to-Ground protection from bird and animals. The GSOC provides electrical insulation, UV resistance and tracking resistance. Silicon Self-fusing Tape can be applied on it for better insulation.
Features and Benefits
- Excellent UV and Ozone resistance.
- Excellent Tracking resistance.
- Protection for leads and jumpers.
- Highly flexible silicone tubing makes application easy.
- Flame Retardant.
- No special installation tool required.
- Does not require further derating conductors.
- Helps prevent contacts by eliminating gaps in coverage.
- Provides Insulation Enhancement upto 765 kV
Diagram
Selection Chart – GSOC-M (Upto 12kV)
| Gala Code | Conductor Dia. (mm) | Thickness (mm) | Packaging (Mtr./Roll) |
|---|---|---|---|
| GSOC-M 15 | Up to 15 | 2.0 | 15 |
| GSOC-M 20 | Up to 20 | 2.0 | 15 |
| GSOC-M 24 | Up to 24 | 2.0 | 15 |
| GSOC-M 32 | Up to 32 | 2.0 | 15 |
| GSOC-M 38 | Up to 38 | 2.0 | 15 |
Selection Chart – GSOC-H ( Upto 36kV )
| Gala Code | Conductor Dia. (mm) | Thickness (mm) | Packaging (Mtr./Roll) |
|---|---|---|---|
| GSOC-H 15 | Up to 15 | 2.7 | 15 |
| GSOC-H 20 | Up to 20 | 2.7 | 15 |
| GSOC-H 24 | Up to 24 | 2.7 | 15 |
| GSOC-H 32 | Up to 32 | 2.7 | 15 |
| GSOC-H 38 | Up to 38 | 2.7 | 15 |
Selection Chart – GSOC – H3 ( Upto 36kV )
| PROPERTIES | TEST METHOD | TYPICAL VALUE |
|---|---|---|
| Physical | ||
| Tensile Strength | ASTM D638 | 7 N/mm² (Min.) |
| Elongation | ASTM D638 | 300% (min) |
| Water Absorption | ASTM D570 | 0.5 (Max) |
| Low Temp. Install at 0°C | – | Installable without difficulty |
| Longitudinal Change | -10% (Max.) | ASTM D638 |
| Thermal | ||
| Air Ageing | ASTM D2671 | 150°C for 168 hrs. |
| Tensile Strength | ASTM D638 | 3.5 N/mm² (Min.) |
| Elongation | ASTM D638 | 150% (Min.) |
| Electrical | ||
| Di-electric Strength | ASTM D149 | >210 kV / cm |
| Volume Resistance | ASTM D257 | 1×10 13 Ohm cm (Min) |
| Tracking and Erosion Resistance | ASTM D2303 | No tracking or erosion to top surface or flame failure after 1 hr. at 2.5 kV 1 hr. at 2.75 kV 1 hr. at 3.0 kV 20 min. at 3.25 kV |
* The above mentioned values are typical analytical values obtained on material when tested as per applicable standards under controlled laboratory conditions and should not be construed as Specifications for the product.
Selection Chart GSOC-EH (Upto 765kV)
| Gala Code | Conductor Dia. (mm) | Thickness (mm) | Packaging (Mtr./Roll) |
|---|---|---|---|
| GSOC-EH-15 | Up to 15 | 5.0 | 15 |
| GSOC-EH-20 | Up to 20 | 5.0 | 15 |
| GSOC-EH-24 | Up to 24 | 5.0 | 15 |
| GSOC-EH-32 | Up to 32 | 5.0 | 15 |
| GSOC-EH-38 | Up to 38 | 5.0 | 15 |
Technical Specification
| PROPERTIES | TEST METHOD | TYPICAL VALUE |
|---|---|---|
| Physical | ||
| Tensile Strength | ASTM D638 | 4 N/mm² (Min.) |
| Elongation | ASTM D638 | 200% (Min.) |
| Density | ASTM D792 | 1.10 – 1.45 gm/cm³ |
| Hardness | ASTM D2240 | 65 ± 5 Shore A |
| Low Temp. Flexibility (-20°C / 4 Hrs.) | ASTM D2671 | No Cracking |
| Water Absorption (24 Hrs @ 23°C) | ASTM D570 | 0.5% (Max.) |
| Thermal | ||
| Thermal Ageing | ASTM D2671 | 150°C for 168 Hrs. |
| Tensile Strength (After Ageing) | ASTM D638 | 3 N/mm² (Min.) |
| Elongation (After Ageing) | ASTM D638 | 100% (Min.) |
| Electrical | ||
| Dielectric Strength | ASTM D149 | 21 kV/mm (Min.) |
| Volume Resistance | ASTM D257 | 1 × 10¹⁰ Ohm·cm (Min.) |
| Tracking & Erosion Resistance | ASTM D2303 |
No tracking or erosion to top surface or flame failure after: • 1 hr at 2.5 kV • 1 hr at 2.75 kV • 1 hr at 2.5 kV • 1 hr at 3.0 kV • 20 min at 3.25 kV |
* The above mentioned values are typical analytical values obtained on material when tested as per applicable standards under controlled laboratory conditions and should not be construed as product specifications.
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