EPDM Cold Shrink Electrical Insulation Tape Products
- 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
High-voltage power distribution networks require moisture sealing and continuous radial pressure across cable splices. Hangda delivers high-performance Cold Shrink Cable Accessories manufactured from formulated ethylene propylene diene monomer. Utilizing an epdm cold shrink structure, each assembly contracts over irregular cable profiles upon core removal, securing void-free dielectric insulation without torches.
Core Performance and Field Advantages
Deploying cold shrink electrical tape designs resolves open flame hazards in confined substations and underground trenches.
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Constant Radial Active Pressure: Memory-retentive polymers maintain dynamic grip during thermal expansion cycles.
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High Dielectric Breakdown Voltage: Exceeds 20 kV/mm to prevent partial discharge events.
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Environmental Resistance: Resists ultraviolet rays, ozone exposure, chemical soil immersion, and fungal growth.
Specifications: 26/35kV Cable Systems
| Parameter | Rating | Test Method |
|---|---|---|
| Dielectric Strength | ≥ 20 kV/mm | IEC 60243 |
| Tensile Strength | ≥ 10.5 MPa | ASTM D412 |
| Elongation at Break | ≥ 650% | ASTM D412 |
| Volume Resistivity | 1.0 × 10¹⁴ Ω·cm | ASTM D257 |
| Operational Temperature | -40°C to +105°C | IEC 60068 |
Hangda Manufacturing Standards
Elastomeric Compounding
Hangda enforces rigorous factory testing for each electrical cold shrink unit, verifying tracking resistance and stress cone precision before dispatch.
Simplified Cable Jointing Workflow
Field crews execute rapid setups through standard operational protocols:
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Clean conductor insulation shields according to specified dimensions.
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Position the cool shrink core assembly over the connector junction.
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Unwind the supporting spiral plastic core counterclockwise until full contraction occurs.
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 |
