Barrier Board Sheet
Gala Barrier Board (GBBS) sheets are Non-shrinkable sheets designed to secure and insulate the underside of structures where there are reduced clearance. Also GBBS sheet acts as inter-phase barrier for switchgear applications. It can be easily fabricated into a shape.
The use of GBBS sheets allows switchgear cabinets to be protected against inter-phase flash-overs caused by contaminants, moisture and animals.
These extremely durable sheets are damage resistant to mechanical impact are general wear and tear usage. Machining properties allow sheets to be cut and drilled for mounting without the need of special equipments. The GBBS sheets withstands power-arcs without changing its shape. The high temperature resistant material cab be wiped clean after power-arc events resulting in no visible effects of surface damages.
Technical Specifications
| Properties | Value | Standard |
|---|---|---|
| Tensile Strength | 10 N/mm² (MPa) (min.) | ASTM D638 |
| Ultimate Elongation | 350% (min.) | ASTM D638 |
| Density | 1.20 ± 0.2 g/cm³ | ASTM D792 |
| Hardness | 40 ± 5 Shore D | ASTM D2240 |
| Water Absorption | 0.5% (max.) | ASTM D570 |
| Accelerated Ageing | 90°C for 7 Days | ASTM D2671 |
| a. Tensile Strength (After Ageing) | ± 25% Variation | ASTM D638 |
| b. Ultimate Elongation (After Ageing) | ± 25% Variation | ASTM D638 |
| Low Temperature Flexibility | No Cracking (-40°C for 4 hrs.) | ASTM D2671 |
| Continuous Temperature Limit | -45°C to +105°C | IEC 216 |
| Dielectric Strength | 20 kV/mm (min.) | ASTM D149 |
| Volume Resistivity | 1 × 10¹⁴ Ohm·cm (min.) | ASTM D257 |
| Dielectric Constant | 5 (max.) | ASTM D150 |
| Resistant to Tracking & Erosion | No Tracking, Erosion or Flame Failure up to 3.25 kV for 20 min. | ASTM D2303 |
Features and Benefits
- Made from High Quality Polyolefin material
- High Di-electric strength
- Excellent UV stabilized & Weather resistant
- Tracking & Erosion resistant
- Resistant to Chemical, Solvents, alkali, salt etc.
- Halogen free
- Suitable for both Indoor and Outdoor applications.
Selection Chart
| Product Code | Width (mm) | Length (mtr) | Thickness (mm) |
|---|---|---|---|
| GBBS-2 | 670 mm | 15 | 2.0 |
| GBBS-2 | 670 mm | 15 | 3.0 |
| GBBS-3 | 670 mm | 15 | 5.0 |
| GBBS-3A | 970 mm | 15 | 3.0 |
| GBBS-5A | 970 mm | 15 | 5.0 |
Diagram
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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