Semi-conducting tubing/insulation double layer tubing/double layer heat-shrinkable tubing/dual wall heat shrinkable tubing/double layer tubing
Material: Semi-conductive material
Property: Provide electric shielding
Inner layer
Tensile strength: More than 12Mpa
Elongation at break: More than 300%
Water absorption: Less than 0.5%
Volume resistance: More than 1014 Ω. Cm
Dielectric strength: More than 20KV/mm
Density: 1.1g/cm3
External layer
Tensile strength: More than 14Mpa
Elongation at break: More than 300%
Water absorption: Less than 0.5%
Volume resistance: Less than 103 Ω. Cm
Density: 1.2g/cm3
Dual wall heat shrinkable tubing which inner layer is made from insulation material to provide high insulation and external layer is made from semi-conductive materials to provide electric shielding. The tubing manufactured with special technology, it is very suitable for application in power cable joint up to 36KV
| Non Tracking Heat Shrinkable Tubing |
| Features |
| Cross-linked polyolefin and silicone rubber |
Operating temperature: -55~105ºC |
| Protect against accidental flashover |
Shrink temperature: 125ºC |
| Ahesive lined or without adhesive |
Voltage class: 5~35 KV |
| Excellent tracking and creeping resistance |
Halogen free,flame retardant |
| |
|
| Dimensions Shrink ratio3:1 |
| Reference |
As supplied(mm) |
After recovered(mm) |
Standard length |
| |
ID min. |
ID max. |
WT nom. |
m |
| 19/6 |
19 |
6 |
2.5 |
1.22 or 15 |
| 30/10 |
30 |
10 |
3.0 |
1.22 or 15 |
| 35/12 |
35 |
12 |
3.0 |
1.22 or 15 |
| 40/16 |
40 |
16 |
3.0 |
1.22 or 15 |
| 45/18 |
45 |
18 |
3.0 |
1.22 or 15 |
| 54/24 |
54 |
24 |
3.0 |
1.22 or 15 |
| 60/29 |
60 |
29 |
3.0 |
1.22 or 15 |
| 76/38 |
76 |
38 |
3.0 |
1.22 or 15 |
| 100/49 |
100 |
49 |
3.0 |
1.22 or 15 |
| |
| ID=Internal Diameter |
WT=wall thickness |
| Technical Data |
| Property |
Test method |
Values |
| Physical |
Tensile strength |
ASTM D2671 |
≥20 MPa |
| |
Breakdown elongation |
ASTM D2671 |
≥450% |
| Aging (136ºC /168hrs) |
Tensile strength |
ASTM D2671 |
≥16 MPa |
| Breakdown elongation |
ASTM D2671 |
≥360% |
| |
Water absorption (23ºC/336hrs) |
ASTM D570 |
≤0.5% |
| |
Density |
ASTM D2671 |
1.10~1.20 |
| |
Low temperature flexibility(-40ºC/4hrs) |
ASTM D2671 |
No cracking |
| |
Heat shock (250ºC/30mins) |
ASTM D2671 |
No drop, No flow, No cracking |
| |
Thermal endurance |
IEC 216 |
105ºC |
| |
Halogen free |
IEC 61249-2-21 |
Cl:900ppm :900ppm max. |
| |
Total (Cl + Br) : 1500ppm max. |
| Electrical |
Volume resistivity |
ASTM D2671 |
≥1013 Ω.cm |
| |
Dielectric strength (in insulation oil) |
ASTM D2671 |
≥15 KV/mm |
| |
Tracking and erosion resistance |
ASTM D 2303 |
After 1hr at 2.5kV |
| |
and 1hr at 2.75kV |
| |
and 1hr at 3.00kV |
| |
and 20mins at 3.25kV Pass |
| Chemical |
Flammability |
ASTM D2863 |
OI≥ 27 |
| |
Color fastness to light |
IEC 60684-3 |
Compare between exposed |
| |
and unexposed parts |
| |
the color does not change |
| |
|
|
|
| Typical application |
| Suitable for indoor & outdoor applications |
| Ideal for external insulation and protection of power cable termination |
| Ordering |
| Standard color : Red |
| Standard packaging is 1.22m/pc or 15m/spool |
| Please specify specification, quantity when ordering |
| Cross reference |
| Raychem/ Tyco : HVOT |
Audited Supplier 
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