| Overhead Line Insulation Sleeve (Medium Voltage Line Cover) |
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| Features: |
Anti-tracking
Excellent insulation property
UV resistance and abrasion resistance
Easy installation with hand tool
Operating temperature: -40℃ to 80℃
Standard color: Red ( Black , green and yellow are available on request ) |
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| Application: |
Overhead line insulation sleeve is a cold-applied wrap-around cover made from polyolefin. It provide insulation and protecting for overhead conductors and core cables to prevent electrical outages. Widely use for railway network overhead line system, improve insulation performance to ensure safe operation of railway system.
Also used to cover core cables to prevent short circuit accidents caused by incidental contact of tree branches or wildlife.
Hand tool attaches for quick installation. |
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| Technical Data: |
| Property |
Test Method |
Typical Date |
| Tensile Strength |
ASTM D 2671 |
≥9MPa |
| Elongation at break |
ASTM D 2671 |
≥550% |
| Dielectric strength ( for 10KV ) |
IEC 243 |
≥25KV/mm |
| Dielectric strength ( for 35KV ) |
IEC 243 |
≥42KV/mm |
| Dielectric constant |
IEC 250 |
＜3.0 |
| Volume resistance |
IEC 93 |
≥1.0x1013Ω.cm |
| Adhesive to steel |
DIN 30672 |
0.5N/cm |
| Water absorption |
ISO 62/23℃ , 14 days |
＜0.5% |
| Flammability(Oi) |
ISO 4589 |
≥27 |
| Low temperature flexibility ( -40℃, 4hr ) |
ASTM D 2671 |
No crack |
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| Dimensions: |
| Code |
Size (mm) |
Suitable conductor section |
Standard packing |
| MT1571 |
14 |
＜70mm2 |
20m/reel; 60m/carton |
| MT1571 |
18 |
70-95mm2 |
20m/reel; 60m/carton |
| MT1571 |
20 |
120-150mm2 |
20m/reel; 40m/carton |
| MT1571 |
28 |
185-240mm2 |
20m/reel; 40m/carton |
| MT1571 |
38 |
300-800mm2 |
20m/reel; 40m/carton |
* Products with sealing mastic are suitable for application up to 42KV
Products without sealing mastic are suitable for application up to 25KV
Other sizes and packing are avaiable on request.
Related information:
The product is supplied as rolls with polybag and packed in a carton. Recommend to store in the original packing, protected from moisture, dust, heat and sunlight.
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