Jiangsu Changyun Intelligent Technology Co., Ltd
Jiangsu Changyun Intelligent Technology Co., Ltd was founded in 2008 and located in Changzhou, China. As a high-tech enterprise specializing in the R&D, manufacturing and supply of eco-friendly medium voltage switchgear, we have owned 17 years of profound experience in high,medium and low voltage power distribution sector.
We are a leading supplier of SF₆-free ring main units (RMUs). By adopting dry air & nitrogen insulation, our products realize zero greenhouse gas emissions and perfectly fit the global low-carbon energy transition. Our flagship GHXGEN series and full-range 12/24kV gas/solid-insulated switchgear have gained wide recognition from State Grid, China Southern Power Grid and worldwide cooperative partners.
Our factory spans more than 50,000 square meters, with modern office buildings, standardized production workshops, intelligent automated production lines, precision machining equipment and comprehensive professional testing facilities. We have established a full-cycle service network, backed by a highly efficient and quick-response team, supporting flexible customization, rapid order processing and small-batch production for diversified customer requirements.
We hold authoritative ISO9001 Quality, ISO14001 Environmental and ISO45001 Occupational Health & Safety management system certifications. All products pass rigorous factory inspection and performance tests before delivery, together with long-term quality warranty, to ensure stable and reliable operation of power distribution equipment.
Relying on solid technical strength, independent in-house testing labs and customer-first service principles, we continuously deliver reliable, cost-efficient customized solutions for global smart and low-carbon power grid projects
We deliver comprehensive support for medium and high voltage power transmission & distribution equipment, covering the entire lifecycle:
- Customization & Design: Custom product design, non-standard scheme development
- Production & Quality Control: Mass production with strict quality assurance
- Technical Support: Pre-sales technical consulting, on-site installation and commissioning
- After-Sales Care: Long-term equipment maintenance, rapid fault response, lifelong after-sales guarantee
We also offer:
- Full-process coordination for cross-border export projects
- Supporting services for global power grid projects
- Customized overall solutions for sustainable low-carbon power distribution
- Tailored services to meet the diverse needs of domestic and international customers
Our core founding team began researching and developing alternative solutions for SF6-free, fully insulated medium-voltage switchgear and solid-insulated ring main units (RMUs) to replace traditional SF6 gas-insulated RMUs.
Key technical members of our founding team joined a joint development project for SF6-free medium-voltage enclosed switchgear, initiated by well-known domestic power enterprises.
We proposed three distinct structural designs for SF6-free, fully gas-insulated ring main units. We conducted comprehensive comparisons, simulations, and verification tests on eco-friendly insulating gases such as dry air, nitrogen, and carbon dioxide, ultimately confirming the optimal technical solution.
We officially released the V1.0 12kV upper and lower isolation dry air-insulated ring main unit. Meanwhile, we participated in the formulation of national standards for 12kV RMUs and achieved mass production of core modules and operating mechanisms for dry air-insulated RMUs.
We completed the prototype type test of the V1.0 dry air-insulated RMU, officially named GHXGEN-12. We collaborated with multiple industrial partners to supply integrated mechanism modules and completed the first batch of project deliveries and commercial operations.
After extensive comparative tests, we selected high-purity dry air as the exclusive insulating medium for the GHXGEN-12 series green RMUs. We launched the V2.0 GHXGEN-12 eco-friendly RMU with customized standard power distribution schemes, developed a 1250A high-current GHXGEN-12/25-25 solid-dry air insulated switchgear, and achieved batch operation of environmentally friendly RMUs in power grid projects in Chongqing and Liaoning.
We rolled out the GHXGEN series dry air-insulated RMUs featuring upper/lower isolation and normal-pressure sealing, along with upgraded V2.9 product structure and optimized operating mechanisms. Our products passed rigorous quality inspections, as well as anti-corrosion, anti-humidity, and mechanical endurance tests, and were widely deployed in batch operations in Guangdong power grid projects.
We launched the compact GHXGEN-12/630-20(25) dry air-insulated RMU to replace traditional SF6 ring main units. The company moved to a brand-new industrial park, fully upgrading production lines, product quality, and overall operational strength. Our secondary environmentally friendly gas-insulated box-type substations passed high-voltage qualification appraisals, and we completed the R&D of the GHXGEN-12/1250-25 ultra-high-current dry air-insulated RMU.
We have a team of over 100 experienced employees,including a dedicated, high-level R&D & technical engineering team, consisting of senior electrical engineers, power system designers and professional technical talents with years of industry accumulation.
The technical team takes charge of product research and development, scheme customized design, insulation technology innovation, on-site technical debugging and whole-process quality control. With profound professional knowledge and rich project service experience, they keep optimizing low-carbon medium-voltage power equipment performance, continuously iterating new environmentally-friendly switchgear products, and providing precise, reliable technical support for global power grid projects.
Meanwhile, our integrated team covers production management, sales service, after-sales maintenance and international trade operation, cooperating closely to deliver efficient, thoughtful one-stop solutions for customers all over the world.
