Insulated Protection Self-locking Silicone Rubber Overhead Line Cover for Bare Conductor
Description
Silicone self-locking overhead line cover is crafted from top-grade silicone rubber material, boasting exceptional electrical insulation and leak-proof properties. It also offers outstanding weather resistance and strong mechanical characteristics, along with hydrophobic and hydrophilic migration traits. Its impressive high and low temperature resistance makes it a reliable choice for various applications. The installation process is easy and straightforward, saving both time and labor. This cover is ideal for insulating and protecting cables and wires, while also increasing the safety distance between objects and cables/wires.
Features
1. Flexible and resistant to bending
2. Durable, resistant to aging and corrosion
3. Flame retardant rating: V-0, can be customized for non-flame retardant
4. Available colors: Red, Gray (can be customized)
5. Simple to install, no need for flames, quick construction time without power interruption
Technical Performance
LJ type aluminum strand applicable product selection table
Voltage level and wall thickness level corresponding table
Technical Performance
| Item | Typical value | Test method |
| Electrical Strength Test | ≥20kV/mm | GB/T 1408.1-2006 |
| Volume Resistivity | ≥1×1014Ω·cm | GB/T 1410-2006 |
| Dielectric Constant | 2～3 | GB/T 1409-2006 |
| Shore Hardness | 70±5A | GB/T 531 |
| Mechanical Properties before heat ageing | ||
| Tensile Strength | ≥4.0MPa | GB/T 528 |
| Elongation at break | ≥200% | GB/T 528 |
| After Heat ageing(180℃, 7d) | ||
| Tensile Strength Change | ±30% | GB/T 528 |
| Elongation Change | ±30% | GB/T 528 |
| Low Temperature Elongation(-15℃, 2h) | ≥20% | GB/T 2951.4-1997 |
| Low Temperature Flexibility(-50℃, 4h) | No crack | UL224-2004 |
| High Temperature Crack Resistance(155℃, 2h) | No crack | GB/T2951.6-1997 |
LJ type aluminum strand applicable product selection table
| Nominal cross-sectional area(mm²) | Nominal outside diameter(mm) | Specifies the specifications of the insulation bushing(mm) |
| 16 | 5.10 | Ф 8 |
| 25 | 6.45 | Ф 10 |
| 35 | 7.50 | Ф 10 |
| 50 | 9.00 | Ф 12 |
| 70 | 10.80 | Ф 14 |
| 95 | 12.50 | Ф 16 |
| 120 | 14.25 | Ф 18 |
| 150 | 15.75 | Ф 20 |
| 185 | 17.50 | Ф 22 |
| 240 | 20.00 | Ф 24 |
| 300 | 22.40 | Ф 28 |
| 400 | 25.90 | Ф 32 |
| 500 | 29.12 | Ф 35 |
Note: Special size and packaging can be customized upon request.
Voltage level and wall thickness level corresponding table
| Voltage Rate | ≤10kV | ≤35kV | ≤110kV | ≤220kV |
| Wall thickness | 2.0±0.3mm | 2.6±0.4mm | 4.0±0.5mm | 6.0±1.0mm |
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