Irradiation crosslinking heat shrinkable sleeve is made of special polyolefin polymer material, which is crosslinked and expanded by high energy radiation. Because of its "memory effect", it can shrink rapidly at a certain temperature, tightly wrap objects, and achieve the protective effects of insulation, moisture-proof, sealing, flame-retardant, etc. it is used as the insulation and end sealing materials of all plastic cables in the world. Because of its small size, light weight, reliable performance, strong adaptability and simple installation, it has been widely used in electrical insulation, chemical corrosion protection, aerospace, telecommunications, power transmission and other fields. It is especially suitable for insulation protection of busbar and busbar slot in all kinds of high and low voltage control cabinets. It provides superior conditions for upgrading products of all walks of life and moving towards the world.
Normal working conditions
Type | Ambient temperature | Ambient atmospheric pressure |
1kV | -30～40 | 86～106 |
10kV | ||
35kV | ||
24kV |
Material performance index
Testing items | Units | Performance index | |||||
1kV | 10kV | 35kV | 24kV | ||||
Operating Temperature | Type Ⅰ | ℃ | -40~125 | ||||
Type Ⅱ | ℃ | -40~105 | |||||
Thermal Shrinkage (90～120℃) | Longitudinal Shrinkage Ratio | % | ≤10 | ||||
Radial Shrinkage Ratio | % | ≥35 | |||||
Mechanical Properties | Tensile Strength | Mpa | ≥10 | ||||
Elongation at break | % | ＞300 | |||||
Electrical Properties | 20℃Volume resistivity | Ω·m | ≥1×1012 | ||||
Dielectric strength | kV/mm | ≥20 | ≥20 | ≥13 | ≥16 | ||
Dielectric constant | ε | < 2.3 | |||||
Heat aging Performance Type Ⅰ：158℃×168h Type Ⅱ：135℃×168h | Tensile strength after aging | Mpa | ≥10 | ||||
Change rate of tensile strength | % | ±20 | |||||
Elongation after aging | % | ≥300 | |||||
Change rate of elongation at break | % | ±20 | |||||
Chemical Properties | Corrosive（23±2℃ humidity95% 24h） | —— | Copper is not corrosion | ||||
Low temperature shock（-40℃×4h） | —— | Not crack | |||||
Oxygen Index | % | ≥27 | |||||
Water absorption | % | < 0.2 | |||||
The low voltage 1kV type is used in the working voltage 1kV wiring harness control cabinet and busway copper hot shrinkable tube
Color: black, red, green, yellow, blue,
Specifications and Basic Dimension
Type | Specification | Suitable for cable nominal cross section | Applicable copper bar | Specification | Suitable for cable nominal cross section (mm) | Applicable copper bar |
1kV | φ1.5 | φ25 | 95 | |||
φ2.0 | φ30 | 6×32 | ||||
φ3.0 | φ35 | 6×40 | ||||
φ4.0 | φ45 | 6×50 | ||||
φ5.0 | 2.5 | φ55 | 6×60 | |||
φ6.0 | φ60 | |||||
φ7.0 | 4 | φ65 | ||||
φ8.0 | 6 | φ70 | 6×80 | |||
φ9.0 | φ80 | 6×100 | ||||
φ10 | 10 | φ90 | 10×100 ×120 | |||
φ12 | 16 | φ105 | 6×120 | |||
φ14 | 25 | φ120 | 6×140 | |||
φ15 | φ135 | 6×175 | ||||
φ16 | 35 | φ160 | 6×200 | |||
φ18 | 1.5×20 | φ180 | 6×230 | |||
φ20 | 50 | 3×20 | φ200 | 6×250 | ||
φ22 | 70 | 6×20 |
It is mainly used for insulation protection between busbars, and does not reduce the heat dissipation of the busbar, and is easy to install.
Medium and high voltage 10kv type is used in the working voltage 10kv control cabinet busbar heat shrinkable tube
Color: black, red, green, yellow, blue,
Specifications and Basic Dimension
Type | Specification | Applicable copper bar(mm) | Specification | Applicable copper bar(mm) |
10kV | φ16 | φ75 | 8×80，10×80 | |
φ22 | φ90 | 10×100 | ||
φ25 | 10×20 | φ105 | 10×120 | |
φ30 | 10×30 | φ120 | 10×140 | |
φ35 | φ135 | 10×160 | ||
φ40 | 10×40 | φ145 | ||
φ45 | φ160 | |||
φ55 | 10×60 | φ180 | ||
φ60 | φ200 | |||
φ65 |
It is mainly used for the insulation and protection of the bare busbar in the high-voltage control cabinet to prevent flashover caused by foreign body lapping and improve the operation safety of the control cabinet
Production Equipment
Irradiation linear accelerator
Pipe-expanding machine
The high voltage 24kv type is used in the working voltage 24kv control cabinet busbar heat shrinkable tube
Color: orange, red, green and yellow
Specifications and Basic Dimension Refer 10kV
The high voltage 35kv type is used in the working voltage 35kv control cabinet busbar heat shrinkable tube
Color: orange, red, green and yellow
Specifications and Basic Dimension
Type | Specification | Applicable copper bar(mm) | Specification | Applicable copper bar(mm) |
PRSGZ3 | φ40 | 10×40 | φ120 | 10×120 |
φ60 | 10×60 | φ150 | ||
φ80 | 10×80 | φ200 | ||
φ100 | 10×100 | φ250 |
