Silicone Rubber Heat Shrink Tubing and Cold Shrink Kits
Reliable medium-voltage power distribution demands insulation systems capable of enduring moisture, thermal expansion, and electrical stresses. Cable preparation requires choosing between thermal recovery sleeves like silicone rubber heat shrink tubing and pre-expanded elastomeric sleeves.
Operational Strengths of Cold Shrink Technology
Pre-expanded silicone rubber sleeves provide constant radial active pressure over cable substrates. Unlike traditional heat-applied sleeves, Cold Shrink Cable Accessories eliminate open flames, hot air guns, and installation permits inside confined substations. Hangda manufactures elastomeric components that accommodate cyclic thermal expansion without developing interfacial micro-voids.
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Active Environmental Sealing: Continuous elastic recovery maintains hydrophobic protection against moisture ingress.
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·Superior Tracking Resistance: Formulated silicone prevents carbon path formation under high-voltage gradients.
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Torch-Free Deployment: Removing the internal spiral core collapses the sleeve directly onto the joint.
Practical Selection Criteria for Cable Insulation
Thermal and elastomeric solutions solve distinct challenges across electrical networks.
Elastic Recovery Across Joint Interfaces
High-stress cable terminations maintain tighter seals through factory-expanded cold shrink kits. These pre-stretched units deliver consistent retention over expanding cable insulation shields.
When evaluating supplementary outer protection, standard silicone shrink wrap lacks the continuous mechanical rebound needed during intense thermal cycling across 10-35 kV circuits.
Technical Specifications: Hangda 10-35 kV Cable System
| Parameter | Standard Value | Testing Method |
|---|---|---|
| Dielectric Breakdown Strength | ≥ 24 kV/mm | IEC 60243 |
| Tensile Strength | ≥ 8.5 MPa | ASTM D412 |
| Volume Resistivity | ≥ 1.0 × 10¹⁴ Ω·cm | IEC 60093 |
| Shore A Hardness | 42 ± 3 | ISO 7619 |
| Temperature Range | -50°C to +200°C | Continuous |
Streamline Cable Installations with Hangda
Hangda delivers precision-molded power fittings designed to reduce downtime across utility grids and industrial facilities.
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Consistent Wall Thickness: Eliminates partial discharge risks across 10-35 kV terminations.
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Simplified Operation: The pre-expanded core unrolls smoothly without specialized tooling.
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Certified Reliability: Each production batch undergoes rigorous electrical and mechanical verification.
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| Cold Shrink Three-Core Sealing Assembly | Cold Shrink Single-Core Sealing Assembly |
Technical Data - Model Selection
| Product Type | Model | Conductor Cross-section(mm²) | Product Type | Model | Conductor Cross-section(mm²) |
| 8.7/15 kV Single-Core Cold Shrink Preparation Parts | GHD-15ZBLS-1*25-50 | 25-50 | 12/20 kV Sing-Core Cold Shrink Preparation Parts | GHD-20ZBLS-1*35-70 | 35-70 |
| GHD-15ZBLS-1*70-120 | 70-120 | GHD-20ZBLS-1*95-150 | 95-150 | ||
| GHD-15ZBLS-1*150-240 | 150-240 | GHD-20ZBLS-1*185-300 | 185-300 | ||
| GHD-15ZBLS-1*300-400 | 300-400 | GHD-20ZBLS-1*400-500 | 400-500 | ||
| 8.7/15 kV Three-Core Cold Shrink Preparation Parts | GHD-15ZBLS-3*10-16 | 25-50 | 12/20 kV Three-Core Cold Shrink Preparation Parts | GHD-20ZBLS-3*35-70 | 35-70 |
| GHD-15ZBLS-3*25-50 | 70-120 | GHD-20ZBLS-3*95-150 | 95-150 | ||
| GHD-15ZBLS-3*70-120 | 150-240 | GHD-20ZBLS-3*185-300 | 185-300 | ||
| GHD-15ZBLS-3*150-240 | 300-400 | GHD-20ZBLS-3*400-500 | 400-500 | ||
| 18/20 kV Single-Core Cold Shrink Preparation Parts | GHD-24ZBLS-1*35-95 | 35-95 | 26/35 kV Single-Core Cold Shrink Preparation Parts | GHD-35ZBLS-1*50-120 | 50-120 |
| GHD-24ZBLS-1*120-185 | 120-185 | GHD-35ZBLS-1*150-240 | 150-240 | ||
| GHD-24ZBLS-1*240-400 | 240-400 | GHD-35ZBLS-1*300-400 | 300-400 | ||
| GHD-24ZBLS-1*500-630 | 500-630 | GHD-35ZBLS-1*500-630 | 500-630 | ||
| 18/20 kV Three-Core Cold Shrink Preparation Parts | GHD-24ZBLS-3*35-95 | 35-95 | 26/35 kV Three -Core Cold Shrink Preparation Parts | GHD-35ZBLS-3*50-120 | 50-120 |
| GHD-24ZBLS-3*120-185 | 120-185 | GHD-35ZBLS-3*150-240 | 150-240 | ||
| GHD-24ZBLS-3*240-400 | 240-400 | GHD-35ZBLS-3*300-400 | 300-400 | ||
| GHD-24ZBLS-3*500-630 | 500-630 | GHD-35ZBLS-3*500-630 | 500-630 |
