Self-locking silicone overhead line cover is made of high quality silicone rubber material, with excellent electrical, anti-leakage marking performance, excellent weather resistance, high mechanical properties, with hydrophobic and hydrophobic migration characteristics, high and low temperature resistance is extremely excellent. It is convenient and simple to install, saves labor and time, and is used for insulation protection of cables and wires, and increases the safe distance between objects and cables/ wires.
Features
Soft and resistant to bending
Long service life, aging resistance, corrosion resistance
Flame retardant performance: V-0, non-flame retardant can be customized
Color: Red, Gray (customizable)
Easy installation, no flame required, short power-off construction time
Applications
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 |
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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