Cold Shrink Termination Tubing and Shrinkable Tube
- Power Frequency Withstand Voltage:
- 117 kV, 5 min, No Breakdown
- Partial Discharge Test:
- Partial Discharge Magnitude≤ 10 pC at 45 kV
- Impulse Voltage Test:
- 200 kV, 10 positive and 10 negative impulses, no breakdown
- Constant Voltage Load Cycling Test (in Air):
- 65 kV, conductor temperature 95–100 ℃, total 60 cycles, no breakdown, no flashover
- Moisture Test (Indoor):
- 32.5 kV, 300 h, no breakdown, no flashover
- Salt Spray Test (Outdoor):
- 32.5 kV, 1000 h, no breakdown, no flashover
- DC Withstand Voltage:
- 104 kV, 15 min, No Breakdown
Medium Voltage Power Distribution Protection
Hangda Electric manufactures specialized Cold Shrink Cable Accessories designed for 26-35kV electrical power lines. High-grade liquid silicone rubber provides elastic recovery, constant radial pressure, and superior tracking resistance against environmental degradation.
Insulation Performance and Field Application
Proper stress control during cable jointing ensures stable operation under severe moisture or temperature fluctuations.
Primary System Features
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Pre-expanded cold shrink construction allows tool-free installation upon pulling out the inner supporting core.
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Formed cold shrink termination units seal high-voltage cable ends without open flames.
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Durable cold shrink tubing prevents moisture ingress, reducing electrical discharge risk across power lines.
Technical Specifications
| Parameter | Value | Standard |
|---|---|---|
| Voltage Rating | 26/35 kV | IEC 60502-4 |
| Material | Liquid Silicone Rubber | GB/T 12706.4 |
| Tensile Strength | ≥ 8.5 MPa | ISO 37 |
| Dielectric Strength | ≥ 22 kV/mm | IEC 60243 |
| Operating Temperature | -40°C to +130°C | IEC 60068 |
Installation Efficiency and Reliability
Hangda Electric delivers cold shrinkable tube assemblies to protect power distribution grids.
26/35 kV Fully Cold Shrink Three-Core Terminal – Installation Outline Drawing
Electrical Performance Tests
| No. | Test Item | Standard Requirements |
| 1 | Power Frequency Withstand Voltage | 117 kV, 5 min, No Breakdown |
| 2 | DC Withstand Voltage | 104 kV, 15 min, No Breakdown |
| 3 | Partial Discharge Test | Partial Discharge Magnitude≤ 10 pC at 45 kV |
| 4 | Impulse Voltage Test | 200 kV, 10 positive and 10 negative impulses, no breakdown |
| 5 | Constant Voltage Load Cycling Test (in Air) | 65 kV, conductor temperature 95–100 ℃, total 60 cycles, no breakdown, no flashover |
| 6 | Moisture Test (Indoor) | 32.5 kV, 300 h, no breakdown, no flashover |
| 7 | Salt Spray Test (Outdoor) | 32.5 kV, 1000 h, no breakdown, no flashover |
Product overview
◆The product is available in single-core, two-core, three-core, four-core, and five-core versions, and has been widely used for low-voltage cable terminations and intermediate connections.
◆Excellent surface hydrophobicity, ensuring the product maintains strong resistance to contamination.
◆Compact size, lightweight, and reliable performance.
◆Application Scope: The product demonstrates excellent cold and heat resistance, making it particularly suitable for high-altitude, cold, humid, salt-spray, and heavily polluted environments.
Installation requires no open flame, making it ideal for flammable and explosive areas such as petroleum, chemical, mining, and tunneling sites.
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| 26/35 kV Single-Core Cold Shrink Outdoor Termination – Installation Drawing | 26/35 kV Three-Core Cold Shrink Outdoor Termination – Installation Drawing | 26/35 kV Three-Core Cold Shrink Outdoor Termination – Supporting Drawing | 26/35 kV Three-Core Cold Shrink Intermediate Connection – Supporting Drawing |
Technical Data - Model Selection
| Product Type | Model | Conductor Cross-section(mm²) |
| 26/35 kV Cold Shrink Indoor Termination | GHD-35HNLS-3(1)*50-630 | 50-630 |
| 26/35 kV Cold Shrink Outdoor Termination | GHD-35HWLS-3(1)*50-630 | 50-630 |
| 26/35 kV Cold shrink Joint | GHD-35JTLS-3(1)*50-630 | 50-630 |
