20kV 35kV 1 Core Or 3 Core Heat Shrink Outdoor Tubing Kit
✅Excellent Environmental Sealing
✅Superior Electrical Insulation & Stress Control
✅Mechanical Protection
✅Relative Ease of Installation and Flexibility
✅Durability and Maintenance-Free
- Product Introduction
Jinneng 20kV 35kV 1 core 3 core Heat Shrink Outdoor tubing kit is a complete set of components used to seal and protect the end of an electrical cable where it connects to equipment (like a transformer, switchgear, or a junction box) or where it transitions from underground to overhead lines.
forming a tight, waterproof, and insulated seal around the cable.
Our cable tubing use high quality Polyethylene (XLPE),Elastic Memory Effect,Heating→Expansion→Cooling→Recovery (upon Reheating)
● Its primary purpose is to prevent moisture ingress, which is the leading cause of failure in electrical systems.
● It also provides electrical insulation, mechanical strain relief, and protection from environmental factors like UV radiation, chemicals,and physical abrasion
Components of Termination Kit
1. Stress Cone / High Voltage Breakout
2. Insulating Seal
3. Phase Color Tube
4. Grounding Shield
5. Sealing Mastic
6. Silicon Sealant
7. Abrasive Pad & Cleaning Wipes
8. Detailed Instructions
Electrical Parameters
| Parameter Category | Parameter Name | Typical Value / Requirement |
|---|---|---|
| System Voltage | Rated Voltage | 20 kV |
| Maximum System Voltage | 24 kV | |
| Insulation Performance | Power Frequency Withstand Voltage (1 min) | 50 kV |
| Lightning Impulse Withstand Voltage | 125 kV | |
| Partial Discharge (PD) | ≤ 10 pC | |
| Design & Performance | Rated Current | Depends on kit model |
| Short-Circuit Withstand | Depends on kit model | |
| Environmental & Mechanical | Operating Temperature | -55°C to +90°C |
| Short-Circuit Temperature | ≤ 250°C | |
| Ingress Protection (IP) Rating | IP68 | |
| Creepage Distance | ≥ 380 mm | |
| Material Properties | Shrink Ratio | Commonly 3:1 or 4:1 |
| Radial Shrinkage | ≥ 50% | |
| Longitudinal Shrinkage | ≤ 10% |
Above parameter for reference only,the final interpretation rights belong to the company.for detail product data,pls contact us
Advantages
● Excellent Seal: Provides a superior, permanent, moisture-proof barrier.
● Durability: Resists environmental hazards, corrosion, and UV damage.
● Reliability: Professionally accepted and trusted method for critical terminations.
● All-in-One: The kit contains everything needed for a complete and correct termination.
Product Models
| Product Name | Image | Model Specification | Applicable Cable Cross-Section (mm²) |
|---|---|---|---|
| 20kV Single-Core Heat-Shrink Outdoor Termination |
|
WSY-20/1.1 | 50~95 |
| WSY-20/1.2 | 120~240 | ||
| WSY-20/1.3 | 300~400 | ||
| WSY-20/1.4 | 500~800 | ||
| 20kV Three-Core Heat-Shrink Outdoor Termination |
|
WSY-20/3.1 | 50~95 |
| WSY-20/3.2 | 120~240 | ||
| WSY-20/3.3 | 300~400 | ||
| WSY-20/3.4 | 500~800 |
Key Applications
● Terminating underground residential distribution (URD) cables to transformers or pad-mounted switches.
● Connecting underground power cables to overhead lines on poles.
● Terminating cables in outdoor substations or switchyards.
● Sealing connections for outdoor industrial equipment, pumps, and lighting.

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