MV 35kV Cold Shrinkable Cable Termination Sleeve
✅ No flame or heating required (safer installation)
✅ Excellent moisture and environmental resistance,IP68
✅ Flexible and adaptable to cable irregularities
✅ Long service life (20+ years)
✅ Faster installation than heat-shrink
✅ maintenance-free
- Product Introduction
Jinneng electric MV 35kV cold shrinkable cable termination sleeve is a pre-expanded rubber-based component designed to terminate medium-voltage power cables (35kV systems) without requiring heat for installation.
It provides electrical insulation, mechanical protection, and environmental sealing for cable ends in transformers, switchgear, or outdoor applications.
Product Model
Suitable cable parameters
|
Voltage level |
Product specification |
Product model |
Cable cross section (mm²) |
|
|
26/35kV |
Single core Cold Shrink termination |
N/WLS-26/35-1.1 |
50~95 |
|
|
N/WLS-26/35-1.2 |
120~185 |
|||
|
N/WLS-26/35-1.3 |
240~400 |
|||
|
N/WLS-26/35-1.4 |
500~630 |
|||
|
3-Core Cold Shrink termination |
N/WLS-26/35-3.1 |
50~95 |
||
|
N/WLS-26/35-3.2 |
120~185 |
|||
|
N/WLS-26/35-3.3 |
240~400 |
|||
|
N/WLS-26/35-3.4 |
500~630 |
|||
Technical Specifications & Standards
| Parameter | Specification |
|---|---|
| Rated Voltage | 35kV (26/35kV) |
| Frequency | 50/60 Hz |
| Conductor Size | 50–630mm² (Cu/Al) |
| Material | Liquid Silicone Rubber |
| Operating Temperature | -50°C to +90°C |
| Impulse Withstand | ±170kV |
| AC Withstand Voltage | 65kV, 30min (IEC 60502) |
| Partial Discharge | ≤10pC at 1.5U₀ |
| Shrinkage Ratio | 3:1 (typical) |
| Standards Compliance | IEC 60502, IEEE 48, GB/T 12706 |
Note:above parameters are typical value for reference,our company reserves the right of final interpretation.pls conatct us for more details
Design & Components
1 Cold Shrink Termination Sleeve
2 Support Core (Carrier Tube)
3 Grounding Components
4 Sealing Mastic/ Tape
5 Cleaning Wipes & Abrasive Pad
6 Step-by-Step Instructions
Comparison: Cold Shrink vs. Heat Shrink
| Feature | Cold Shrink | Heat Shrink |
|---|---|---|
| Installation | No heat; faster (10–15 min) | Requires torch (~30 min) |
| Sealing | Self-sealing mastic | Dependent on adhesive quality |
| Durability | Resists cracking (flexible) | May brittle over time |
| Temperature Range | -50°C to +90°C | -40°C to +85°C |
| Weather Resistance | High | Moderate |
Installation Steps
Tools:Cable stripper, knife, cleaning solvent, grounding wire.
No heat gun needed (cold shrink technology).
1. Strip Cable:remove outer sheath, semiconductor layer, and insulation to specified lengths.
2. Prepare Conductor:clean conductor with solvent; smooth any sharp edges.
3. Slide On Sleeve:position the cold shrink sleeve over the cable (ensure correct phase alignment).
4. Remove Core & Shrink:pull the plastic spiral core → sleeve contracts tightly onto the cable.
5. Grounding:attach grounding braid to cable shield and secure.
If more instruction,pls contact us
Applications
● Substations: Terminating cables connected to switchgear, transformers, and RMUs (Ring Main Units).
● Utility Distribution Networks: As outdoor or indoor terminations for underground power lines.
● Industrial Plants: Power distribution in factories, mines, data centers, and offshore platforms.
● Infrastructure Projects: Tunnels, airports, seaports, and rail transportation systems.
FAQs
Q: Can it be reused if misaligned?
A: No – once the core is removed, shrinkage is irreversible.
Q: How to ensure waterproofing?
A: Verify mastic fully wraps the cable; use waterproof tape if needed.
Q: Shelf life?
A: 2–3 years if stored in original packaging (avoid UV/damp).
Q: How long does it last?
A: 20+ years (depending on material and environment)
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