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Snap-in insulation protecting band is mainly applied to aerial bare line inelectriied railway system when crossing tunnel, bridge and tropical rainforest, used to improve its insulation performance, prevent occurring ofshort circuit, and reinforce the insulation protection of aerial bare line effectively
lt is mainly applied to line crossing insulation protection of aerial bare line
of 15kV and 35kV in power system.
lt is mainly applied to reinforced insulation protection of aerial bare linecrossing forest, building, tunnel, river, etc.
lt also can be applied to the insulator part on the aerial bare line of railwaySystem, used to improve its insulation performance.
| Property | unit | Standard requirement | Test results | Test method for |
| Electric strength test | KV/MM | ≥20 | 22 | GB/T 1408.1-2006 |
| Volume resistivity | Ω·CM | ≥1×1014 | 2×1014 | GB/T 1410-2006 |
| Dielectric constant | 2~3 | 2.3 | GB/T 1409-2006 | |
| Shaw hardness | Degree | 70±5 | 71 | GB/T 531 |
| Mechanical properties of t | GB/T 528 | |||
| Before the aging: | GB/T 528 | |||
| Tensile strength | MPA | ≥4.0 | 5.5 | GB/T 528 |
| Elongation at break | % | ≥200 | 243 | GB/T 528 |
| (180℃×7h) After aging: | GB/T 528 | |||
| Tensile strength variation | % | ±30 | 13 | GB/T 528 |
| The rate of elongation | % | ±30 | -22 | GB/T 528 |
| Low elongation(-15℃×2h) | % | ≥20 | 190 | GB/T 2951.4-1997 |
| Low temperature flexibility(-50℃×4h) | – | Crack-Free | Crack-Free | UL224-2004 |
| High temperature resistance to cracking (155℃×2h) | – | Crack-Free | Crack-Free | GB/T2951.6-1997 |
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