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WDWT Heat Shrink Dual-wall Tube

WDWT Heat Shrink Dual-wall Tube

Description:                                                                                                                       Detailed Specification Download   

The red inner layer is made of insulation material to provide good insulation
The black outer layer is made of semi-conductive material to provide electric shielding
Suitable for applications in power cable joints up to 35 kV
Continuous operation temperature: -45℃ to 105℃
Shrink temperature: start at 100℃, and fully recovered at 130℃

Selection Table
Product No.
Inner Diameter
After Recovered Wall Thickness
10%)/mm
Standard Length /mm
As Supplied
(Min) /mm
After Recovered
 Max. /mm
WDWT-30/12
30
12
5.8
300-1000
WDWT-35/13
35
13
5.8
300-1000
WDWT45/17
45
17
5.8
300-1000
WDWT-55/21
55
21
5.8
300-1000
WDWT-65/26
65
26
5.8
300-1000
WDWT-85/30
85
30
7.3
300-1000
WDWT-100/38
100
38
7.3
300-1000
WDWT-120/45
120
45
7.3
300-1000
Technical Data
Inner Insulation Layer
Property
Test Method
 Standard Value
Operation Temperature
IEC 216
-45℃ to 105℃
Tensile Strength
ASTM-D-638
≥12MPa
Elongation at Break
ASTM-D-638
≥400%
Tensile Strength after Aging
ASTM-D-2671
≥10MPa (130℃,168 hrs)
Elongation at Break after Aging
ASTM-D-2671
≥320% (130℃,168hrs)
Volume Resistivity
IEC 60093
≥1×1014Ω·cm
Dielectric Strength
IEC 60243
≥25kV/mm
Longitudinal Shrinkage
ASTM-D-2671
≤10%
Eccentricity
≤30%
Water Absorption
ISO 62
≤0.5%
Outer Semi-conductive Layer
Property
Test Method
Standard Value
Operation Temperature
IEC 216
-45℃ to 105℃
Tensile Strength
ASTM-D-638
≥10MPa
Elongation at Break
ASTM-D-638
≥300%
Tensile Strength after Aging
ASTM-D-2671
≥8MPa (130℃,168 hrs)
Elongation at Break after Aging
ASTM-D-2671
≥240% (130℃,168hrs)
Volume Resistivity
IEC 60093
102 ~104Ω•cm
Longitudinal Shrinkage
ASTM-D-2671
≤10%
Eccentricity
≤30%
Water Absorption
ISO 62
≤0.5%

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