Ⅰ. Introduction to HV Heat Shrink Cable Joint
The NKS Power 35kV Heat Shrink Cable Joint is a high-performance product specifically designed for intermediate connections in 21/35kV and 26/35kV single-core and three-core XLPE, EPR, and other polymer cables. Compliant with IEC 60502.4 and GB/T 12706.4 standards, this product delivers outstanding electrical and mechanical performance. Its unique heat-shrink technology, combined with multiple material components, provides high mechanical strength, superior insulation properties, and excellent weather resistance, making it an indispensable and reliable component in power systems.
Ⅱ. Features of HV Heat Shrink Cable Joint
1. High Mechanical Strength
Heat Shrink Cable Joints are fabricated from high-class material input, ensuring the product has the ability to resist any kind of mechanical stress that may be imposed during cable operation. It is applicable to a wide range of power cables providing stable connections for copper and aluminum core cables.
2. Superior Insulation Performance
Has excellent properties of insulation, resistance to corona, and tracking resistance thereby effectively ensuring safety as well as reliability in transmitting power. It maintains stable electrical performance even in an adverse environment.
The heat-shrink material displays high UV resistance and weather resistance, allowing it to be exposed outdoors for a long period in any climatic conditions. It increases the product’s service life as well as reduces maintenance costs.
3. Rational Design
Simple structure, rational design features a stress control device inside it distributes the electric field equally. No partial discharge and insulation breakdown happen because of electric field concentration, so long as operational stability of power systems is ensured.
4. Easy Installation
Quick assembly and easy installation make the process easier. Thus, construction time and installation costs are considerably reduced to a great extent along with failure risks due to improper installation.
Wide Applicability
These are for both copper and aluminum core cables, with crimp terminals plus mechanical terminals, suitable diversity of users' needs with wide applicability.
Ⅲ. Electrical Performance Parameters of HV Heat Shrink Cable Joint
NKS-35kVRSI- | Items | Parameter |
Technical Parameters | Cable rated voltage | 26/35kV |
| Frequency withstand voltage(AC) | 117kV/5min |
Partial Discharge | 45kV＜10pC |
Impulse voltage | 200kV |
| Heating cycles test in air | 65kV, 60 cycles in total |
Applicable cable cross section | 25-630mm² |
The product has passed the inspection and certification of the China Electric Power Research Institute (CEPRI) Power Industry Electrical Equipment Quality Inspection and Testing Center
Type test reference standard: IEC 60502-4:2010 GB/T 12706.4-2008
Ⅳ. Selection Table for HV Heat Shrink Cable Joint
| Product name | Nominal cross section (mm²) | Kit Code | Product Code |
3-core heat shrink joints | 25-50 | NKS-35kVRSJ-3/1 | 96721SHJ-SZ |
| 70-120 | NKS-35kVRSJ-3/2 | 96722SHJ-SZ |
| 150-240 | NKS-35kVRSJ-3/3 | 96722SHJ-SZ |
| 300-400 | NKS-35kVRSJ-3/4 | 96722SHJ-SZ |
Single core heat shrink joints | 25-50 | NKS-35kVRSJ-1/1 | 96711SHJ-SZ |
| 70-120 | NKS-35kVRSJ-1/2 | 96712SHJ-SZ |
| 150-240 | NKS-35kVRSJ-1/3 | 96713SHJ-SZ |
| 300-400 | NKS-35kVRSJ-1/4 | 96714SHJ-SZ |
