Cold Shrink De-Gassing End Cap
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Cold Shrink De-gassing Caps supplied with relief Valve (RV) are used for sealing High Voltage & Extra High Voltage Cables (33 kV & above) to release the constantly evolving gas generated inside the Cable during transportation & storage in hot climate conditions.
Features and Benefits
- Provides additional security to Cables by relieving the pressure generated by Residual gases.
- Automatically releases gas when pressure rises Colour Visual Black above 1 psi.
- Eliminates possibility of accidental fire caused due to trapped Methane gas while removing the (normal / non relief valved) Endcaps.
- Possibly reduce the timing of de-gassing (heating) chamber, thereby savings in energy & time.
- Relief (Non-returnable) valve shall not allow moisture, water, dirt etc. to enter the cable.
- Ensures gas / defect free cables, adds customer satisfaction.
- Each Relief valve is factory tested for gas release.
Diagram
Selection Chart
| Code No | Ds(min.) | Df(max.) | Lf (min.) | Tf (min.) | Application Range |
|---|---|---|---|---|---|
| GCCS – 01 RV | 25 | 12 | 60 | 3.3 | 13 – 20 |
| GCCS – 02 RV | 35 | 16 | 75 | 3.4 | 17 – 30 |
| GCCS – 03 RV | 45 | 22 | 80 | 3.4 | 23 – 38 |
| GCCS – 04 RV | 55 | 22 | 80 | 3.4 | 23 – 48 |
| GCCS – 05 RV | 90 | 45 | 100 | 3.4 | 46 – 80 |
Technical Specifications
| Properties | Test Methods | Typical Values |
|---|---|---|
| Colour | Visual | Black |
| Tensile Strength | ASTM D-412 | 6.0 MPa (min) |
| Ultimate Elongation | ASTM D-412 | 400% (min) |
| Tear Strength | ASTM D-624 | 25.0 KN/m (min) |
| Volume Resistivity | ASTM D-257 | 1 x 10¹² Ohm. cm (min.) |
| Fungus Resistance | ASTM G-21 | 28 Days exposure no growth |
| Hardness | ASTM D2240 | 40 ± 10 Shore A |
| Dielectric Strength | ASTM D149 | 18.0 kV/mm (min) |
Certificates
FAQs
1. What is a Heat Shrink Shroud?
A Heat Shrink Shroud is a protective sleeve made from cross-linked polymer material that shrinks when heat is applied. It provides insulation, sealing, and mechanical protection for cables, joints, and terminations.
2. How does a Heat Shrink Shroud work?
When heat is applied using a heat gun or torch, the shroud shrinks uniformly and tightly wraps around the cable or joint, creating a secure and sealed covering.
When heat is applied using a heat gun or torch, the shroud shrinks uniformly and tightly wraps around the cable or joint, creating a secure and sealed covering.
3. What material is Heat Shrink Shroud made of?
It is typically made from cross-linked polyolefin material, often containing carbon black for UV resistance and weather protection.
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