Silicone Cold Shrink Tube for 8.7/15 kV Cable Accessories
- Power Frequency Withstand Voltage:
- 39 kV, 5 min, no breakdown
- Partial Discharge Test:
- Partial Discharge Magnitude≤ 10 pC at 15 kV
- Impulse Voltage Test:
- 95 kV, 10 positive and 10 negative impulses, no breakdown
- Constant Voltage Load Cycling Test (in Air):
- 23 kV, conductor temperature 95–100 ℃, total 60 cycles, no breakdown, no flashover
- Thermal Stability Test (185 mm² Conductor):
- 23.4 kA, 2 s, twice, no visible damage
- Dynamic Stability Test:
- 82.6 kA, ≥ 10 ms, no visible damage
- Moisture Test (Indoor):
- 11 kV, 300 h, no breakdown, no flashover
- Salt Spray Test (Outdoor):
- 11 kV, 1000 h, no breakdown, no flashover
Product Overview
This silicone cold shrink tube is an 8.7/15 kV medium-voltage cable accessory for cable terminations and intermediate joints. Its pre-expanded cold-shrink structure provides insulation and sealing without an open flame, making installation suitable for demanding industrial environments. Available for single-core and three-core cable systems.
Technical Parameters
| Item | Specification |
|---|---|
| Rated Voltage | 8.7/15 kV |
| AC Withstand | 39 kV / 5 min |
| Partial Discharge | ≤10 pC at 15 kV |
| Impulse Voltage | 95 kV |
| Conductor Range | 25–400 mm² |
| Moisture Test | 11 kV / 300 h |
| Salt Spray Test | 11 kV / 1000 h |
Applications
Typical use includes indoor and outdoor cable terminations, intermediate joints, utility networks, industrial power systems, mining, petrochemical facilities, tunnels, and humid or salt-spray locations.
Why Choose This Design?
Compared with conventional heat-shrink solutions, the cold shrink wrap requires no flame or heating equipment. The silicone shrink tubing also supports fast field installation, while hydrophobic performance and tested electrical resistance support operation in contaminated environments. Multiple models cover 25–400 mm² conductors.
Application Case
For an 8.7/15 kV outdoor cable project exposed to moisture and salt spray, the cold shrink grip system combines field-friendly installation with tested insulation, moisture, and environmental performance.
8.7/15 kV Fully Cold Shrink Three-Core Terminal – Installation Outline Drawing
Electrical Performance Tests
| No. | Test Item | Standard Requirements |
| 1 | Power Frequency Withstand Voltage | 39 kV, 5 min, no breakdown |
| 2 | Partial Discharge Test | Partial Discharge Magnitude≤ 10 pC at 15 kV |
| 3 | Impulse Voltage Test | 95 kV, 10 positive and 10 negative impulses, no breakdown |
| 4 | Constant Voltage Load Cycling Test (in Air) | 23 kV, conductor temperature 95–100 ℃, total 60 cycles, no breakdown, no flashover |
| 5 | Thermal Stability Test (185 mm² Conductor) | 23.4 kA, 2 s, twice, no visible damage |
| 6 | Dynamic Stability Test | 82.6 kA, ≥ 10 ms, no visible damage |
| 7 | Moisture Test (Indoor) | 11 kV, 300 h, no breakdown, no flashover |
| 8 | Salt Spray Test (Outdoor) | 11 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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| 8.7/15 kV Single-Core Cold Shrink Indoor Termination – Installation Drawing | 8.7/15 kV Three-Core Cold Shrink Outdoor Termination – Installation Drawing | 8.7/15 kV Three-Core Cold Shrink Outdoor Termination – Supporting Drawing | 8.7/15 kV Three-Core Cold Shrink Joint – Supporting Drawing |
Technical Data - Model Selection
| Product Type | Model | Conductor Cross-section(mm²) | Product Type | Model | Conductor Cross-section(mm²) | |||
| 8.7/15 kV Three core cold shrink indoor terminal | GHD-15HNLS-3*25-50 | 25-50 | 8.7/15 kV Single core cold shrink indoor terminal | GHD-15HNLS-1*25-50 | 25-50 | |||
| GHD-15HNLS-3*70-120 | 70-120 | GHD-15HNLS-1*70-120 | 70-120 | |||||
| GHD-15HNLS-3*150-240 | 150-240 | GHD-15HNLS-1*150-240 | 150-240 | |||||
| GHD-15HNLS-3*300-400 | 300-400 | GHD-15HNLS-1*300-400 | 300-400 | |||||
| 8.7/15 kV Three core cold shrink outdoor terminal | GHD-15HWLS-3*25-50 | 25-50 | 8.7/15 kV Single core cold shrink outdoor terminal | GHD-15HWLS-1*25-50 | 25-50 | |||
| GHD-15HWLS-3*70-120 | 70-120 | GHD-15HWLS-1*70-120 | 70-120 | |||||
| GHD-15HWLS-3*150-240 | 150-240 | GHD-15HWLS-1*150-240 | 150-240 | |||||
| GHD-15HWLS-3*300-400 | 300-400 | GHD-15HWLS-1*300-400 | 300-400 | |||||
| 8.7/15 kV Three core cold shrink intermediate joint | GHD-15JTLS-3*25-50 | 25-50 | 8.7/15 kV Single core cold shrinkintermediate joint | GHD-15JTLS-1*25-50 | 25-50 | |||
| GHD-15JTLS-3*70-120 | 70-120 | GHD-15JTLS-1*70-120 | 70-120 | |||||
| GHD-15JTLS-3*150-240 | 150-240 | GHD-15JTLS-1*150-240 | 150-240 | |||||
| GHD-15JTLS-3*300-400 | 300-400 | GHD-15JTLS-1*300-400 | 300-400 | |||||
