CKSG Three-phrase Series Filiter Reactor

About Jiangsu Changyun Intelligent Technology Co., Ltd.

Leading Manufacturer of Eco-Friendly High & Low Voltage Switchgear Solutions

Jiangsu Changyun Intelligent Technology Co., Ltd., founded in 2008 and headquartered in Changzhou, Jiangsu, China, is a high-tech manufacturer specializing in the research, development, manufacturing, and global supply of high & low-voltage power distribution equipment.

With over 17 years of industry experience, we provide innovative and reliable solutions for utilities, EPC contractors, industrial facilities, renewable energy projects, commercial infrastructure, and smart power grids worldwide.

Our core product portfolio includes:

• Eco-Friendly Ring Main Units (RMUs)
• SF₆-Free Ring Main Units
• Gas-Insulated Ring Main Units (GIS RMUs)
• Solid-Insulated Ring Main Units
• Vacuum Circuit Breakers (VCBs)
• Load Break Switches (LBS)
• Vacuum Interrupters
• high & low Voltage Switchgear
• Customized Power Distribution Solutions

As a trusted Ring Main Unit manufacturer in China, we are committed to helping customers build safer, greener, and more efficient electrical distribution networks.

Driving the Future of Green Power Distribution

As global energy systems transition toward carbon neutrality, Jiangsu Changyun Intelligent Technology is committed to developing environmentally friendly high & low-voltage switchgear.

Our flagship GHXGEN Series SF₆-Free Ring Main Units utilize dry air and nitrogen insulation technology, eliminating the use of sulfur hexafluoride (SF₆), one of the world's most potent greenhouse gases. This innovative solution delivers:

• Zero SF₆ emissions
• Reduced environmental impact
• Excellent insulation performance
• Low maintenance requirements
• Enhanced operational safety
• Compliance with future environmental regulations

Our eco-friendly RMUs provide an ideal solution for smart grids, renewable energy integration, industrial power systems, and urban power distribution networks.

Advanced Manufacturing Capabilities

Our modern manufacturing facility covers more than 50,000 square meters and integrates intelligent production technologies with rigorous quality management.

The factory is equipped with:

• CNC laser cutting machines
• Precision sheet metal fabrication equipment
• Automated assembly production lines
• Intelligent manufacturing systems
• Professional electrical testing laboratories
• Complete quality inspection facilities

From engineering design and raw material inspection to final assembly and routine testing, every production stage is strictly controlled to ensure consistent product quality and long-term operational reliability.

Our flexible manufacturing system supports:

• OEM & ODM production
• Customized engineering solutions
• Fast order processing
• Small and large batch production
• Rapid project delivery

Strict Quality Assurance

Quality is at the core of everything we manufacture.

Jiangsu Changyun Intelligent Technology operates under internationally recognized management systems, including:

• ISO 9001 – Quality Management System
• ISO 14001 – Environmental Management System
• ISO 45001 – Occupational Health and Safety Management System

Every Ring Main Unit and high & low-voltage switchgear product undergoes comprehensive factory testing before shipment, including:

• Insulation Resistance Testing
• Power Frequency Withstand Voltage Testing
• Contact Resistance Measurement
• Mechanical Operation Testing
• Functional Verification
• Visual and Dimensional Inspection

These rigorous quality control procedures ensure reliable performance throughout the equipment's service life.

Trusted by Utilities and Power Distribution Projects

Our products have been successfully applied in a wide range of power distribution applications, including:

• State Grid projects
• China Southern Power Grid
• Renewable energy projects
• Industrial manufacturing plants
• Commercial buildings
• Infrastructure developments
• Urban distribution networks
• Data centers
• Transportation systems

Today, Jiangsu Changyun Intelligent Technology continues to expand its presence across Southeast Asia and international markets by delivering dependable high & low-voltage power distribution solutions tailored to local standards and project requirements.

Engineering Innovation & Customer-Centered Service

Innovation drives our continuous growth.

Supported by an experienced R&D team, independent testing laboratories, and customer-focused engineering services, we provide complete technical support throughout every stage of the project—from product selection and system design to manufacturing, testing, and after-sales service.

Our mission is to help customers improve power distribution reliability while reducing lifecycle costs through advanced technologies and customized solutions.

Why Choose Jiangsu Changyun Intelligent Technology?

Customers choose us because we combine engineering expertise with manufacturing excellence.

Our Advantages

• ✔ 17+ Years of Manufacturing Experience
• ✔ Professional RMU   igh & Low Voltage Switchgear Manufacturer
• ✔ Eco-Friendly SF₆-Free Ring Main Unit Technology
• ✔ 50,000+ m² Modern Manufacturing Facility
• ✔ Advanced CNC & Intelligent Production Lines
• ✔ Independent Testing Laboratory
• ✔ ISO 9001 / ISO 14001 / ISO 45001 Certified
• ✔ IEC-Compliant Product Design & Routine Testing
• ✔ OEM & ODM Manufacturing Services
• ✔ Flexible Customization & Fast Delivery
• ✔ Professional Technical Support
• ✔ Global Export Experience

Frequently Asked Questions

Who is Jiangsu Changyun Intelligent Technology Co., Ltd.?

Jiangsu Changyun Intelligent Technology Co., Ltd. is a Chinese manufacturer specializing in eco-friendly Ring Main Units (RMUs), high & low-voltage switchgear, Vacuum Circuit Breakers, Load Break Switches, and customized power distribution solutions.

What products does Jiangsu Changyun manufacture?

We manufacture SF₆-Free Ring Main Units, gas-insulated RMUs, solid-insulated RMUs, Vacuum Circuit Breakers, Load Break Switches, Vacuum Interrupters, and other high & low-voltage power distribution equipment.

What industries do your products serve?

Our products are widely used in utility power grids, renewable energy, industrial facilities, commercial buildings, infrastructure, transportation, and smart grid projects.

Do you provide OEM and customized solutions?

Yes. We offer OEM, ODM, and fully customized solutions based on customer drawings, project specifications, and local utility standards.