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DTWT Heat Shrinkable Triple Layer Tubing

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Features

Inner layer is made from Hi K material to stress control
The medium layer is made from insulation material to provide higher insulation.
External layer is made from semi-conductive materials to provide electric shielding
Suitable for applications in power cable joints up to 12 kV
Minimum fully recovered temperature :1300 C

DTWT Heat Shrinkable Triple Layer Tubing

Dimension Chart for Medium Voltage Conductor Cover

Code	As Supplied	After Recovered
ø D1 (max.)	ø D2 (max.)	T(min.)
DTWT - 42/19	42	19	8.0
DTWT - 60/29	60	29	8.0
DTWT - 76/38	76	38	8.0
Note: All Dimensions are in mm

Technical Data (Inner stress control layer):

Property	Test Method	Requirements
Tensile strength	ASTM D 2671	10 N/mm² (min.)
Elongation at break	ASTM D 2671	200% (min.)
Water absorption	ISO 62	0.5% (max.)
Volume resistance	IEC 93	10⁹ Ω cm (min.)

Technical Data (Medium insulation layer):

Property	Test Method	Requirements
Tensile strength	ASTM D 2671	8 N/mm² (min.)
Elongation at break	ASTM D 2671	200% (min.)
Water absorption	ISO 62	0.5% (max.)
Volume resistance	IEC 93	10¹² Ω cm (min.)
Dielectric Strength	IEC 243	10 kV/mm (min.)

Technical Data (External semi-conducting layer):

Property	Test Method	Requirements
Tensile strength	ASTM D 638	8 N/mm² (min.)
Elongation at break	ASTM D 638	200% (min.)
Water absorption	ISO 62	0.5% (max.)
Volume resistance	IEC 93	10⁴Ω cm (min.)

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