Red Insulation Tube
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Insultube – Red is used in Power Cable Joints for MV Applications.
These tubes are manufactured from high quality cross linked polyolefin material.
Excellent Di-electric properties.
Conforms to IEC 60684-3-247 standard.
Halogen free, ROHS compliant.
Customised dimensions, thickness, length & colours available on request.
Features & Benefits
- High shrink ra o up to 5:1
- Optional hot melt adhesive lining for complete environmental protection and insulation
- Excellent resistance to weathering, UV rays, chemicals and solvents
- Meets RoHS Compliance | Halogen Free
- Meets IP 68 (Ingress Protec on)
Applications
- Ideal for applications where there is a large dimensional difference between the cables, connectors and components.
- Enables the Tube to cover the large-size transi ons between cables, cable connectors and back shells, thus simplifying repairs of damaged cable as well as sealing the back end of the connectors.
Diagram
Selection Chart
| Code | D Min (mm) | d Max (mm) | T ±10% (mm) |
|---|---|---|---|
| GRT 30/8 | 30 | 8 | 2.6 |
| GRT 33/10 | 33 | 10 | 2.6 |
| GRT 40/12 | 40 | 12 | 2.7 |
| GRT 50/16 | 50 | 16 | 2.7 |
| GRT 70/22 | 70 | 22 | 2.7 |
| GRT 95/25 | 95 | 25 | 3.0 |
| GRT 105/30 | 105 | 30 | 3.0 |
| GRT 115/34 | 115 | 34 | 3.2 |
| GRT 130/36 | 130 | 36 | 3.2 |
Selection Chart (Heavy Wall)
| Code | D Min (mm) | d Max (mm) | T ±10% (mm) |
|---|---|---|---|
| GRT(HW) 30/8 | 30 | 8 | 3.0 |
| GRT(HW) 33/10 | 33 | 10 | 3.0 |
| GRT(HW) 40/12 | 40 | 12 | 4.0 |
| GRT(HW) 50/16 | 50 | 16 | 4.0 |
| GRT(HW) 70/22 | 70 | 22 | 4.0 |
| GRT(HW) 95/25 | 95 | 25 | 4.0 |
| GRT(HW) 105/30 | 105 | 30 | 4.0 |
| GRT(HW) 115/34 | 115 | 34 | 4.0 |
| GRT(HW) 130/36 | 130 | 36 | 4.0 |
Selection Chart (Extra Heavy Wall)
| Code | D Min (mm) | d Max (mm) | T ±10% (mm) |
|---|---|---|---|
| GRT(EHW) 50/16 | 50 | 16 | 6.2 |
| GRT(EHW) 70/22 | 70 | 22 | 6.2 |
| GRT(EHW) 95/25 | 95 | 25 | 6.2 |
| GRT(EHW) 105/30 | 105 | 30 | 6.2 |
| GRT(EHW) 115/34 | 115 | 34 | 6.2 |
| GRT(EHW) 130/36 | 130 | 36 | 6.2 |
D,d : Internal Diameter
Selection Chart (Extra Heavy Wall)
| Code | D Min (mm) | d Max (mm) | T ±10% (mm) |
|---|---|---|---|
| GRT(EHW) 50/16 | 50 | 16 | 6.2 |
| GRT(EHW) 70/22 | 70 | 22 | 6.2 |
| GRT(EHW) 95/25 | 95 | 25 | 6.2 |
| GRT(EHW) 105/30 | 105 | 30 | 6.2 |
| GRT(EHW) 115/34 | 115 | 34 | 6.2 |
| GRT(EHW) 130/36 | 130 | 36 | 6.2 |
D,d : Internal Diameter
Technical Specifications
| Properties | Value | Standard |
|---|---|---|
| Physical | ||
| Tensile Strength | 12 N/mm² (MPA)(min.) | ASTM D638 |
| Ultimate Elongation | 300% (Min.) | ASTM D638 |
| Longitudinal Change | -10% (Max.) | ASTM D2671 |
| Hardness | 45 ± 10 Shore D | ASTM D2240 |
| Water Absorption | 0.2 % (max.) | ASTM D570 |
| Thermal | ||
| Accelerated Ageing | (120°C for 500 Hrs) | ASTM D2671 |
| Tensile Strength | 11 N/mm² (Mpa) (min.) | ASTM D 638 |
| Ultimate Elongation | 250% (Min.) | ASTM D638 |
| Low Temperature Flexibility (-40°C for 4 Hrs.) | No Cracking | ASTM D2671 |
| Heat Shock (250°C for 30 Min.) | No Cracking or flowing | ASTM D2671 |
| Shrink Temperature | 125°C | IEC 216 |
| Continuous Temperature limit | -40°C to +100°C | – |
| Electrical | ||
| Dielectric Strength | 12 KV/mm. (Min.) | ASTM D149 |
| Volume Resistivity | 1 x 10¹⁴ Ohm.cm (min.) | ASTM D257 |
| Dielectric Constant | 5 (Max.) | ASTM D150 |
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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