At Jihui Electric Group Co., Ltd., we specialize in the research, development, manufacturing, sales, and service of medium and low voltage power transmission and distribution equipment up to 35kV. Located in Yueqing Economic Development Zone, China, we provide reliable electrical solutions for power companies, engineering contractors, equipment integrators, renewable energy projects, and industrial customers worldwide.

Our product range covers Cable accessories, Cable distribution boxes, ring main units, Prefabricated Substations, combination transformers, SF6 load switches, and Vacuum circuit breakers. Among our Cable Accessory solutions, the 35KV three core cold shrink intermediate cable is designed to provide safe, stable, and efficient cable connection performance for medium voltage power systems.

From our years of experience in electrical equipment manufacturing, we understand that cable joints are one of the most important parts of a power network. A cable connection must maintain insulation strength, mechanical protection, and reliable operation under different environmental conditions.

That is why we developed our 35KV Cold Shrink Cable joint series with advanced cold shrink technology, high-quality silicone rubber materials, and strict production control. Our goal is to help customers build safer and more reliable medium voltage cable systems.

Product Overview of 35KV Three Core Cold Shrink Intermediate Cable

The 35KV three core cold shrink intermediate cable is a professional medium voltage cable accessory designed for connecting and protecting three-core 35KV power cables.

It is widely used in underground cable networks, power distribution systems, industrial facilities, renewable energy projects, and infrastructure construction.

The main function of this cable joint is to restore the electrical insulation and mechanical protection of cables after cable connection. It provides continuous insulation performance and reliable sealing to ensure stable operation of the power system.

Unlike traditional cable jointing methods that may require heating tools or complicated installation procedures, cold shrink technology uses pre-expanded elastic silicone rubber materials. During installation, technicians only need to remove the support core, and the insulation body automatically shrinks around the cable.

This design improves installation efficiency and reduces the influence of installation conditions.

Why We Developed 35KV Three Core Cold Shrink Cable Joint

During our cooperation with customers from different industries, we found that medium voltage cable systems often face several practical challenges:

• Long-term electrical stress during operation

• Moisture and dust entering cable connection areas

• Complex outdoor installation conditions

• Different installation skills among workers

• Need for reliable maintenance-free operation

A cable joint is not only a connection component. It is a key protection point that affects the safety and service life of the entire cable system.

Based on these requirements, we developed the 35KV three core cold shrink intermediate cable joint to provide a simple installation method with stable electrical performance.

Our design focuses on three important goals:

• Reliable insulation protection

• Strong environmental resistance

• Easy and safe installation

Working Principle of 35KV Three Core Cold Shrink Intermediate Cable

The working principle of the cold shrink intermediate cable joint is based on the elastic recovery ability of silicone rubber.

During production, the silicone rubber insulation tube is expanded and placed on a removable support core. Before installation, the product keeps its expanded shape.

After cable preparation and connection are completed, the installer places the cold shrink joint in the correct position and removes the support core.

The silicone rubber material then contracts naturally and creates constant radial pressure around the cable surface.

This pressure helps achieve:

• Continuous insulation contact

• Reliable electrical stress control

• Effective moisture sealing

• Long-term mechanical protection

Because the shrinking process does not depend on external heating, the installation quality is less affected by weather conditions or construction equipment.

Main Features of 35KV Three Core Cold Shrink Intermediate Cable Joint

1. High Electrical Insulation Performance

The most important requirement for a 35KV cable joint is insulation reliability. Our product uses high-performance silicone rubber materials with excellent electrical insulation characteristics.

The insulation structure helps control electric field distribution around the cable connection area and improves system stability.

2. Excellent Sealing Protection

Cable joints installed underground or outdoors may face moisture, rain, humidity, and temperature changes.

The elastic sealing structure of our 35KV cold shrink cable joint creates close contact with the cable surface, helping prevent water and contaminants from entering.

3. Easy Installation Without Heating Equipment

One of the biggest advantages of cold shrink technology is installation convenience.

Traditional heat shrink products require heating tools and careful temperature control. Our cold shrink intermediate cable joint does not require flame or heating equipment.

This makes installation safer and more efficient, especially for projects with strict construction requirements.

4. Strong Environmental Adaptability

Power systems may operate in different environments including underground networks, industrial areas, and renewable energy facilities.

The silicone rubber material provides flexibility and helps maintain performance under temperature changes and mechanical stress.

5. Suitable for Three Core 35KV Cable Systems

The product is specially designed for three-core medium voltage cables and provides complete connection protection for 35KV applications.

It is suitable for professional cable installation projects requiring reliable long-term operation.

Technical Advantages of Our 35KV Cold Shrink Cable Joint

At Jihui Electric, we focus on practical engineering performance. We know customers need products that are not only technically qualified but also easy to install and maintain.

Source: Comparison based on Jihui Electric engineering experience and common medium voltage cable installation practices.

Manufacturing Process of 35KV Three Core Cold Shrink Intermediate Cable

At Jihui Electric, we believe product reliability begins during manufacturing. Every production step influences final cable accessory performance.

Raw Material Selection

We carefully select silicone rubber and insulation materials according to electrical performance requirements. Incoming materials are inspected before entering production.

Precision Manufacturing

Our production team follows standardized procedures to ensure every cable joint maintains consistent quality.

The manufacturing process includes material processing, component forming, assembly, and quality inspection.

Performance Testing

Before delivery, each product undergoes inspection procedures including appearance checking, structural verification, and production quality confirmation.

Quality Management at Jihui Electric

We operate according to internationally recognized management systems:

• ISO9001 Quality Management System Certification

• ISO14001 Environmental Management System Certification

• ISO45001 Occupational Health and Safety Management System Certification

These standards support our commitment to stable production, responsible manufacturing, and reliable electrical solutions.

Application Industries of 35KV Three Core Cold Shrink Intermediate Cable

The 35KV three core cold shrink intermediate cable is widely used in medium voltage power systems where reliable cable connection and long-term operation are required. Through our experience in manufacturing cable accessories, we understand that different industries have different requirements for cable joints.

Some projects focus on continuous power supply, some require strong environmental protection, and others need faster installation during construction. Our cold shrink cable joint solution is designed to meet these practical needs.

Power Grid and Distribution Networks

Power utilities require cable accessories with stable electrical performance and long service life. Medium voltage cable networks often operate continuously for many years, so cable joints must maintain reliable insulation and sealing performance.

The 35KV cold shrink cable joint provides a dependable connection solution for underground cable systems, substations, and distribution networks.

Renewable Energy Projects

Renewable energy systems such as solar farms and wind power plants require reliable medium voltage collection networks. These projects are often built in open environments where electrical equipment must handle temperature changes, humidity, and outdoor conditions.

Our three core cold shrink intermediate cable helps protect cable connection points and supports stable energy transmission from renewable power facilities.

Industrial Manufacturing Plants

Industrial factories, mining facilities, chemical plants, and production centers depend on continuous electricity supply. A cable connection failure may cause production delays and economic losses.

The 35KV cold shrink intermediate cable joint provides strong insulation protection and reliable operation for industrial medium voltage power distribution systems.

Rail Transit and Infrastructure Construction

Rail systems, airports, tunnels, and urban infrastructure projects require safe and stable electrical networks.

Because many infrastructure projects have strict requirements for safety and maintenance, Cold Shrink Cable Accessories are widely selected due to their simple installation process and reliable performance.

Commercial Buildings and Public Facilities

Large commercial buildings, hospitals, data centers, and public facilities require dependable power distribution systems.

The compact structure and reliable insulation performance of our 35KV three core cold shrink cable joint make it suitable for various indoor and underground cable applications.

Application Comparison of 35KV Three Core Cold Shrink Cable Joint

Source: Application analysis based on Jihui Electric engineering experience and medium voltage power project requirements.

Performance Comparison of Different Cable Joint Technologies

When customers choose a cable joint, they usually compare installation method, safety, reliability, and maintenance requirements. We designed our 35KV three core cold shrink intermediate cable with practical project conditions in mind.

Source: Comparison based on common cable accessory technologies and Jihui Electric application experience.

Why Choose Jihui Electric for 35KV Cable Accessories?

Choosing the right supplier is important for every power project. A reliable cable accessory manufacturer should provide stable products, technical support, and professional service.

At Jihui Electric Group, we focus on providing complete medium voltage power solutions instead of only supplying individual products.

Experienced Electrical Equipment Manufacturer

We specialize in medium and low voltage power transmission and distribution equipment up to 35kV. Our experience covers cable accessories, switching equipment, transformers, and complete power distribution systems.

This allows us to understand how cable accessories work together with other electrical equipment in real projects.

Complete Medium Voltage Product Solutions

Besides the 35KV three core cold shrink intermediate cable, we also provide:

• 35KV cable accessories

• 10KV Cold Shrink Cable Termination products

• Cable distribution boxes

• Ring main units

• Gas insulated switchgear

• Solid Insulated Ring Main Units

• Prefabricated substations

• Combination transformers

• SF6 load switches

• Vacuum circuit breakers

Customers can receive complete power distribution solutions from one professional manufacturer.

Strict Quality Control

Quality control is an important part of our production process. We inspect materials, control production procedures, and perform final product checks before shipment.

Our company follows:

• ISO9001 Quality Management System

• ISO14001 Environmental Management System

• ISO45001 Occupational Health and Safety Management System

Customized Project Support

Different customers may have different requirements, including cable specifications, installation conditions, and project standards.

Our engineering team communicates with customers before production to confirm technical details and provide suitable solutions.

Professional International Delivery Service

For overseas customers, we provide complete export support including production arrangement, inspection, packaging, and transportation coordination.

According to product size, quantity, and destination, we support sea transportation, land transportation, and combined logistics solutions.

Our packaging methods include moisture protection, shock protection, and impact protection to ensure safe delivery.

Technical Data Reference of 35KV Three Core Cold Shrink Intermediate Cable

Source: Jihui Electric product information and internal engineering specifications.

Frequently Asked Questions About 35KV Three Core Cold Shrink Intermediate Cable

Q1: What is a 35KV three core cold shrink intermediate cable joint?

It is a cable accessory used to connect two sections of 35KV three-core power cables. It restores insulation, provides sealing protection, and ensures reliable electrical connection.

Q2: What are the advantages of cold shrink cable joints?

Cold shrink cable joints provide easy installation, no heating requirement, stable sealing performance, and reliable insulation protection.

Q3: Where can this 35KV cable joint be used?

It can be used in power distribution networks, industrial plants, renewable energy projects, underground cable systems, transportation infrastructure, and commercial electrical facilities.

Q4: Does Jihui Electric provide customized cable accessories?

Yes. We can provide customized solutions according to cable specifications, project requirements, and customer technical standards.

Q5: How does Jihui Electric ensure product quality?

We control every stage from material selection and production to final inspection. Our quality management systems support stable product performance and reliable delivery.

Q6: What delivery methods are available?

We provide professional export delivery solutions including sea transportation, land transportation, and combined logistics according to customer requirements.

Choose Jihui Electric 35KV Three Core Cold Shrink Intermediate Cable for Reliable Power Connections

At Jihui Electric Group, we believe reliable power systems start with reliable components. The 35KV three core cold shrink intermediate cable provides a safe, efficient, and durable solution for medium voltage cable connection applications.

With professional manufacturing experience, advanced production technology, strict quality control, and complete electrical solutions, we continue supporting customers around the world with dependable power equipment.

If you are looking for a professional 35KV cold shrink cable joint manufacturer, three core medium voltage cable accessory supplier, or reliable 35KV cable connection solution provider, Jihui Electric is ready to support your project with quality products and professional service.