RUBNS-OLC
Silicon Rubber Overhead Electrical Line Cover
DescriptionRUBNS-OLC The innovative product design, ease of installation. Use silicon rubber material, anti-aging, corrosion resistance, with good resistance to corona resistance, high temperature performance, especially suitable for the protection of the bare wire. Widely used in substation protection works and railway catenary system, a significant effect in the cross-lines.
It can be used continuously under the temperature of -50℃~+150℃. It is convenient and simple to install, saves labor and time, and is used for insulation protection of cables and wires to increase the safe distance between objects and cables.
Features
1. Soft and fold-resistant
2. Long service life, anti-aging, and corrosion resistance
3. Simple installation, no fire, power outage construction time is short
Technical Performance
| Item | Typical Data | 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 Property | ||
| Before heat ageing | ||
| Tensile Strength | ≥4.0MPa | GB/T 528-2009 |
| Elongation at break | ≥200% | GB/T 528-2009 |
| After Heat aging (180℃, 7d) | ||
| Tensile Strength Change | ±30% | GB/T 528-2009 |
| Elongation Change | ±30% | GB/T 528-2009 |
| Low Temperature Elongation(-15℃, 2h) | ≥20% | GB/T 2951.4-1997 |
| Low Temperature Flexibility(-50℃, 4h) | No cracks | UL224-2004 |
| High Temperature Crack Resistance(155℃, 2h) | No cracks | GB/T2951.6-1997 |
Structure
Dimensions
Recommended Size for LG Type Aluminum Stranded Wires
| Nominal cross-sectional area (mm²) | Recommended Inner Diameter of Conductor Cover (mm) |
| 50～70 | Ф12 |
| 95～120 | Ф17 |
| 150～185 | Ф20 |
| 210～300 | Ф24.2 |
| 400 | Ф30 |
| 500 | Ф32 |
| 630 | Ф35 |
| 800 | Ф39.8 |
Recommended size for LGJ Type Steel Core Aluminum Stranded Wires & LGJF Type Anti-corrosion Steel Core Aluminum Stranded Wires
| Nominal cross-sectional area (mm²) | Recommended Inner Diameter of Conductor Cover (mm) |
|
35 50 |
Ф12 |
| Ф15.6 | |
|
70～95 120～150 185～240 |
Ф17 |
| Ф20 | |
| Ф24.2 | |
|
400～500 800～800 |
Ф32 |
| Ф39.8 |
Correspondence table between Voltage and Wall Thickness
| Voltage(KV) | ≤10kV | ≤35kV | ≤110kV | ≤220kV |
| Wall thickness | 2.0±0.3mm | 3.0±0.4mm | 4.0±0.5mm | 6.0±1.0mm |
Application Cases
Installation Instructions
- Clean the inside of the RUBNS-OLC with cleaning cloth and alcohol fluids until the inside is
clean without dust;
- Connect the pointed plastic mouth to the body of RTV silicone rubber adhesive bottle. See illustration 1 above.
- Smear RTV silicone rubber adhesive all over the concave channel of the RUBNS-OLC
uniformly as showed in illustration 2 above;
- Uniformly smear the two flat fringes of the concave channel with RTV silicone
rubber adhesive as the illustration 3 shows.
- Connect the bulging part of the RUBNS-OLC on one side into the concave channel of the
other side and squeeze the connecting part from one end to the other as illustration 4 indicates;
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