Company Profile

Jiangsu Changyun Intelligent Technology Co., Ltd., founded in 2008 in Changzhou, Jiangsu, China, is a professional manufacturer of medium voltage switchgear and power distribution equipment. We specialize in Ring Main Units (RMUs), SF₆-free switchgear, vacuum circuit breakers, and customized solutions. Our IEC-compliant products serve utilities, EPC contractors, renewable energy projects, EV charging infrastructure, and industrial applications worldwide.
Our Services

Changyun provides complete engineering and manufacturing services for medium-voltage power distribution systems. Our services include: Ring Main Unit (RMU) Manufacturing Medium Voltage Switchgear Manufacturing OEM & ODM Production Custom RMU Design Factory Acceptance Testing (FAT) Technical Support Global Export & After-sales Service Our products are widely used in utility, renewable energy and industrial power distribution projects.
Company History

Since launching our eco-friendly RMU development program, Changyun Intelligent has continuously advanced its technology through extensive R&D, product testing, and field applications. Our eco-friendly RMU series has achieved stable performance, compact design, and reliable operation, meeting international standards and supporting modern medium-voltage distribution projects with sustainable, low-maintenance solutions.
Our Team

Our engineering team specializes in medium-voltage power distribution and provides support from product selection and custom design to manufacturing, testing and commissioning. We work with utilities, EPC contractors and industrial customers to deliver reliable OEM Ring Main Units, Medium Voltage Switchgear and customized power distribution solutions.

Year Established

Employees

Annual Sales (USD)

Customers Served

MV Ring Main Unit（RMU) & Distribution Automation Equipment Manufacturer

MV Ring Main Unit（RMU)

Distribution Automation Equipment

HV&LV Switchgear

Switches，Switching Mechanisms & Accessories

24kV SF₆ RMU for Smart Grid & Power Distribution in Indonesia

The XGN18-24 24kV SF₆ Gas Insulated Ring Main Unit (RMU) is a compact medium-voltage switchgear designed for reliable power distribution. Featuring a sealed IP67 gas tank, modular configuration, low maintenance, and IEC-compliant design, it is ideal for substations, utilities

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GHXGEN Series SF₆-Free Ring Main Unit | 12kV/24kV Medium Voltage Switchgear

GHXGEN Series Eco-Friendly Air-Insulated Non-Motorized Smart Grid Ring Main Unit (RMU) SF₆-Free Ring Main Unit for the Next Generation of Power Distribution The GHXGEN Series is an eco-friendly medium voltage ring main unit designed to replace conventional SF₆ switchgear with a low-GWP insulation ...

XGN15-12 High Voltage AC Metal-Enclosed Ring Main Switchgear: Incoming & Transformer Cabinet Solution

XGN15-12 SF₆ Insulated Ring Main Switchgear XGN15-12 SF₆ Ring Main Unit for Reliable 12kV Power Distribution The XGN15-12 SF₆ Insulated Ring Main Switchgear (RMU) is a compact 12kV medium-voltage switchgear designed for safe, reliable, and efficient power distribution in utility, industrial, ...

12kV Eco-Friendly Gas Insulated Clean Air / Nitrogen Smart Grid Ring Main Unit (RMU)

CHANGYUN INTELLIGENT.pdf Looking for a 24kV RMU manufacturer for your project?Send us your voltage, rated current, configuration and quantity. Our team will provide a customized solution and quotation. Get a Quote Introducing our eco-friendly gas-insulated Clean Air / Nitrogen Smart Grid Ring Main ...

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24kV SF₆ Load Break Switch Manufacturer

CHANGYUN INTELLIGENT.pdf FLN36-24D/T630-20-230 24kV SF₆ Load Break Switch Product Introduction The Changyun Intelligent FLN36-24D/T630-20-230 SF₆ Load Break Switch (LBS) is a high-performance medium-voltage switching device designed for 24kV, three-phase AC 50Hz distribution systems . Utilizing SF₆ ...

12kV SF6 Ring Main Unit (RMU) for Medium Voltage Power Distribution

GXGND‑12 12 kV SF₆ sealed RMU – IEC certifiedG

More Products

GGD & GBD Low-Voltage Fixed Switchgear

KYN28A-12 Indoor Metal-Clad Withdrawable Medium Voltage Switchgear

Incoming Line Manual Operating Mechanism

Outgoing Line Electri Operating Mechanism

Indoor Disconnecting Switch

SF₆ Gas Insulated Switching Station

DTU-30D Distribution Terminal Unit (DTU) for Smart Distribution Automation

Low Voltage Draw-out Switchgear

Primary & Secondary Integrated Ring Main Unit (Smart RMU)

GHCT-01 DC Type A Motor Spring Operating Mechanism

12kV Indoor High Voltage Disconnect Switch with Earthing Switch

Outdoor High Voltage Cable Distribution Box

Outdoor Combinet Low & Medium Voltage Distribution Cabinet

FLN36-24D/T630-20-230 SF₆ load-break switch

XGN15-12 AC Metal Enclosed Ring Main Unit

XGN15-12 High-voltage Semi-insulated Incoming Ring Main Unit

HXGN-12 Ring Main Unit Operating Mechanism

Incoming Line Electri Operating Mechanism

Outgoing Line Manual Operation Mechanism

High-Conductivity Copper Busbar

Our Partners

Latest Cases

10kV Medium Voltage Power Distribution Solution for Lithium Battery Manufacturing

Published on: 2026-06-03 08:56:20

High-Reliability 10kV Power Distribution Solution for Lithium Battery Manufacturing Project Overview A leading high-tech enterprise specializing in lithium battery vacuum equipment required a highly reliable medium-voltage power distribution system to support its precision manufacturing lines. ...

Power Distribution,Suqian City,Jiangsu,China（Annual Grid Procurement)

Published on: 2026-06-02 15:03:41

Urban Distribution Network Upgrade with SHC-12 Eco-Gas Insulated Ring Main Units Project Overview To support the modernization of aging urban power infrastructure, the utility implemented an annual procurement program for medium-voltage Ring Main Units (RMUs) as part of its distribution network ...

10kV Intelligent Power Distribution Solution for Comprehensive Energy Stations

Published on: 2026-06-03 09:43:13

Application Scenario: Centralized Cooling & Heating + Energy Storage New Energy Load Project Overview Located in the Nanjing Jiangbei ,Energy Station #3 serves as a pivotal municipal comprehensive energy project. It integrates centralized cooling, centralized heating, and energy storage peak-shaving ...

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Eco-Friendly Gas-Insulated RMU: An SF₆-Free Solution for Medium Voltage Distribution

Eco-Friendly Gas-Insulated RMU: An SF₆-Free Solution for Medium Voltage Distribution As the power industry moves toward more sustainable and environmentally responsible technologies, SF₆-free Ring Main Units (RMUs) are gaining increasing attention in modern medium voltage power distribution. An eco...

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2026-07-09 09:58:34

Changyun Intelligent Expands Southeast Asian Footprint at Electric & Power Indonesia 2026

Changyun Intelligent Expands Southeast Asian Footprint at Electric & Power Indonesia 2026 Jakarta, Indonesia – September 2–5, 2026 – As Southeast Asia’s largest and most influential power industry event approaches, Changyun Intelligent announces its participation at the 24th Series of Power ...

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2026-07-29 13:59:01

China Ring Main Unit Manufacturer Expands Global OEM Supply

Jiangsu Changyun Strengthens Global OEM Supply as a China Ring Main Unit Manufacturer As the global demand for reliable medium-voltage power distribution infrastructure continues to grow, Jiangsu Changyun Intelligent Technology Co., Ltd., a China Ring Main Unit manufacturer, is expanding its ...

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Our Certification

China Jiangsu Changyun Intelligent Technology Co., Ltd certification

Standard: ISO 9001 QUALITY MANAGEMENT SYSTEM CERTIFICATE

Standard: ISO 45001 OCCUPATIONAL HEALTH AND SAFETY MANAGEMENT SYSTEM CERTIFICATE

Standard: ISO 14001 ENVIRONMENTAL MANAGEMENT SYSTEM CERTIFICATE