EPDM Cold Shrink Tubing Sleeve Sizes and Dimensions
- 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
Matching cable dimensions with protective insulation prevents moisture intrusion and electrical flashover in medium-voltage power distribution. In 26-35kV installations, selecting the correct cold shrink sleeve ensures sustained radial pressure over cable sheaths without requiring open flames or specialized heating tools.
Standard Sizing Guidelines for High-Voltage Applications
Selecting appropriate cold shrink tubing sizes requires verifying both the expanded inner diameter and the recovered inner diameter against cable insulation shields.
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Outer Diameter Coverage: The minimum cable diameter must exceed the relaxed tube dimension to maintain active sealing.
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Core Extraction Clearance: Cable joints require sufficient axial space along the conductor for smooth plastic core unrolling.
Technical Specifications and Dimension Chart
The following specifications outline physical dimensions and insulation parameters for medium-voltage splices:
| Conductor Cross-Section (mm²) | Cable Sheath Range (mm) | Recovered Length (mm) | Dielectric Strength (kV/mm) |
|---|---|---|---|
| 50 – 95 | 24 – 34 | 450 | ≥ 20 |
| 120 – 185 | 32 – 43 | 500 | ≥ 20 |
| 240 – 400 | 40 – 54 | 550 | ≥ 20 |
Reliable Performance with Certified Components
Field Verification Steps
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Inspect the cable sheath diameter before stripping insulation layers.
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Position the epdm cold shrink tube centrally over the connector.
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Pull the supporting plastic ribbon smoothly toward the ground terminal.
Certified Medium-Voltage Cable Solutions
Manufactured from cross-linked synthetic rubber with high tracking resistance, Hangda Cold Shrink Cable Accessories provide dependable weatherproofing and moisture exclusion across harsh operating environments. Hangda pre-expanded assemblies undergo rigorous factory discharge tests to ensure operational safety.
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 |
