Ⅰ. Introduction to Cold Shrink Waterproof Cable Joint
Cold shrink waterproof cable joints are components that use high elastomer materials (commonly used silicone rubber and ethylene-propylene rubber) to be injection vulcanized in the factory, then enlarged and lined with plastic spiral supports to form various cable accessories.
Medium Voltage cold shrinkable cable accessories products are suitable for 6/10kV,8.7/15kV PVC, XLPE, and EPR single-core, two-core, three-core, four-core, and five-core power cables. Cold shrinkable cable accessories have the advantages of small size, easy and rapid operation, no need for special tools, wide application range and few product specifications. Compared with heat-shrinkable cable accessories, it does not require fire heating and is widely used in various fields such as electric power, petrochemicals, metallurgy, railways, and port construction.
Product execution standards: IEC60502.4, GB/T12706.4
Ⅱ. Features of Cold Shrink Waterproof Cable Joint
1. Direct Supply from the Factory, Source Quality Control
NKS POWER has its own production lines that cover everything, which includes raw material inspection and semi-finished product processing up to final assembly and testing. It makes sure that every batch of waterproof connectors complies with internal quality control standards as well as external industry standards.
2. Stability and Reliability
Using the tested cold-shrink sealing technology allows easier installation at the site with better sealing performance as well as stable insulation. It effectively resists the ingress of moisture and environmental interference.
3. Strong Customization Capabilities and Rapid Response
Full customization from design to small-batch trial production up to manufacturing is ensured based on dimensions used at sites, terminal configurations, material grades, and other requirements-dramatically reducing project schedules.
4. Strict Quality and Testing System
It runs from raw material procurement and incoming inspection up to finished product testing and pre-shipment functional tests-consisting of water resistance and pressure resistance. Consistent reliability for long-term field use is assured.
5. Technical Support
Factory-level technical team support which includes selection guidance, post-installation maintenance, and fault diagnosis support to enable the user minimize construction risk and operation costs.
Ⅲ. Electrical Performance Parameters of Cold Shrink Waterproof Cable Joint
NKS-15kVLSJ- | Items | Parameter |
Technical Parameters | Cable rated voltage | 6/10kV 8.7/15kV |
| Frequency withstand voltage(AC) | 39kV/5min |
Partial Discharge | 15kV＜10pC |
Impulse voltage | 105kV |
| Heating cycles test in air | 22kV, 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 Cold Shrink Cable Joint
| Product name | Nominal cross section (mm²) | Kit Code | Product Code |
3-core cold shrinkable joint | 25-50 | NKS-10kVLSJ-3/1 | 63541SCJ-SZ |
| 70-120 | NKS-10kVLSJ-3/2 | 63542SCJ-SZ |
| 150-240 | NKS-10kVLSJ-3/3 | 63543SCJ-SZ |
| 300-400 | NKS-10kVLSJ-3/4 | 63544SCJ-SZ |
Single core cold shrink joint | 25-50 | NKS-10kVLSJ-1/1 | 63441SCJ-SZ |
| 70-120 | NKS-10kVLSJ-1/2 | 63442SCJ-SZ |
| 150-240 | NKS-10kVLSJ-1/3 | 63443SCJ-SZ |
| 300-400 | NKS-10kVLSJ-1/4 | 63444SCJ-SZ |
