Heat shrinkable stress control tube is the core component of power cable accessories and mainly helps to disperse the stress. They are used for the voltage rated up to 36KV.
Specification
Main technical performance
| Items | Unit | Specifications | Test methods |
| Tensile strength | MPa | ≥13 | ASTM D2671 |
| Elongation at break | % | ≥300 | ASTM D2671 |
| 120℃ 168h Heat aging | K1>0.8 K2>0.7 | ASTM D2671 | |
| Volume resistance | Ω· cm | 10⁸～10¹² | ASTM D2671 |
| Dielectric constant | ≥20 | IEC 250 | |
| Shrink temperature | ℃ | 120～130 | |
| Water absorption | ≤0.5% | ASTM D570 |
Size
| Size | As supplied （mm） | After recovery （mm） | Cable range（mm2） | |
| I.D. | I.D. | Wall thickness | ||
| RSST—25/9 | ≥24 | ≤9 | 2.1±0.25 | Special design |
| RSST—30/13 | ≥28 | ≤14 | 2.1±0.25 | 25～50 |
| RSST—35/16 | ≥33 | ≤17 | 2.1±0.25 | 70～120 |
| RSST—40/19 | ≥38 | ≤20 | 2.0±0.25 | 150～240 |
| RSST—50/22 | ≥50 | ≤22 | 2.5±0.25 | Special design |
| RSST—60/26 RSST—65/26 | ≥58 ≥65 | ≤27 | 2.5±0.25 | above 300 |
| RSST—80/33 | ≥80 | ≤33 | 3.0±0.4 | Special design |