Ⅰ. Introduction to Low Voltage Cold Cable Joint
Low voltage cold 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.
Low voltage cold shrink cable accessories products are suitable for 0.6/1kV 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 Low Voltage Cold Cable Joint
1. High-Performance Insulation Material
Premium Silicone Rubber: Makes use of high-quality silicone rubber material which has great insulation and environmental resistance, so there will not be any electrical leakage to ensure safe power transmission.
Superior Weather Resistance: Withstands harsh environmental conditions such as high/low temperatures and humidity including UV light, thus extending product life.
2. Rapid Connection and Disconnection
Detachable design: It is because of the unique detachable design that enables making quick connection and disconnection hence increasing maintainability as well as operation in power systems by a great percentage.
Installation does not require the utilization of any special tools or heat sources. It is simple to install, thus saving on labor costs and time.
3. International Standard Certification IEC 60502
This is to confirm that products are manufactured under stringent measures of control in line with the IEC 60502 international quality standard and certified accordingly for high performance and safety, which regular quality testing assures stable operation in all conditions.
4. Customized Solutions
Personalized Configuration: Different cable joint configurations which are designed specifically as per the needs of the clients including varying voltage levels and installation environments to match your power system perfectly.
Flexible Application: It can be applied in houses, commercial, and industrial buildings that offer different customer requirements.
Ⅲ. Electrical Performance Parameters of Cold Cable Joint
NKS-1kVLSJ- |
Items |
Parameter |
Technical Parameters | Cable rated voltage | 0.6/1kV |
Frequency withstand voltage(AC) |
8kV/5min |
Impulse voltage |
20kV |
Insulation resistance |
≥5MΩ |
Applicable cable cross section |
10-40mm² |
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 Low Voltage Cold Cable Joint
| Product name | Nominal cross section (mm²) | Kit Code | Product Code |
| 1 core cold shrink joint | 10-16 | NKS-1kVLSJ-1/0 | 30401SCJ-SZ |
| 25-50 | NKS-1kVLSJ-1/1 | 30402SCJ-SZ |
| 70-120 | NKS-1kVLSJ-1/2 | 30403SCJ-SZ |
| 150-240 | NKS-1kVLSJ-1/3 | 30404SCJ-SZ |
| 300-400 | NKS-1kVLSJ-1/4 | 30405SCJ-SZ |
| 2 core cold shrink joint | 10-16 | NKS-1kVLSJ-2/0 | 30406SCJ-SZ |
| 25-50 | NKS-1kVLSJ-2/1 | 30407SCJ-SZ |
| 70-120 | NKS-1kVLSJ-2/2 | 30409SCJ-SZ |
| 150-240 | NKS-1kVLSJ-2/3 | 30409SCJ-SZ |
| 300-400 | NKS-1kVLSJ-2/4 | 30410SCJ-SZ |
| 3 core cold shrink joint | 10-16 | NKS-1kVLSJ-3/0 | 30411SCJ-SZ |
| 25-50 | NKS-1kVLSJ-3/1 | 30412SCJ-SZ |
| 70-120 | NKS-1kVLSJ-3/2 | 30413SCJ-SZ |
| 150-240 | NKS-1kVLSJ-3/3 | 30414SCJ-SZ |
| 300-400 | NKS-1kVLSJ-3/4 | 30415SCJ-SZ |
| 4 core cold shrink joint | 10-16 | NKS-1kVLSJ-4/0 | 30416SCJ-SZ |
| 25-50 | NKS-1kVLSJ-4/1 | 30417SCJ-SZ |
| 70-120 | NKS-1kVLSJ-4/2 | 30418SCJ-SZ |
| 150-240 | NKS-1kVLSJ-4/3 | 30419SCJ-SZ |
| 300-400 | NKS-1kVLSJ-4/4 | 30420SCJ-SZ |
| 5 core cold shrink joint | 10-16 | NKS-1kVLSJ-5/0 | 30421SCJ-SZ |
| 25-50 | NKS-1kVLSJ-5/1 | 30422SCJ-SZ |
| 70-120 | NKS-1kVLSJ-5/2 | 30423SCJ-SZ |
| 150-240 | NKS-1kVLSJ-5/3 | 30424SCJ-SZ |
| 300-400 | NKS-1kVLSJ-5/4 | 30425SCJ-SZ |
Ⅴ. Installation Guide
1. Pre-Installation Preparation
Read the Guide: Before the installation process begins, go through the installation guide so as to prepare all tools and materials.
Inspect Cables: Make sure that cables are clean, dry and not damaged or worn out.
2. Installation Steps Attach Cables
Use the steps from the installation guide to attach the detachable connector cables to the cables. Make sure each step is done exactly as told so that quality of installation can be assured.
Check Connections: After putting it in, do all needed checks to make sure connections are secure and electrical performance is good.
3. Maintenance Recommendations Regular Checks
From time to time look at how well cable joints are working so any problems can be found early for long steady work.
Cleaning cable joints removes dust and dirt from their surfaces hence more life.
