SF6-free ring main unit from China: Comking Electric provides top OEM ring main unit for green power grids around the world
With certifications for international markets, flexible expansion options (side or top busbar configurations), and built-in intelligence for remote monitoring, Comking’s RMUs are engineered for seamless integration into modern distribution networks—from European smart cities to Southeast Asian microgrids. With a strong focus on sustainability, reliability, and smart grid compatibility, We is positioning itself at the forefront of green switchgear innovation.
Among the flagship offerings are three distinct product lines tailored for diverse applications:
CKAI-12 Series Atmospheric Sealed Air-Insulated Ring Main Unit
This model leverages ambient-pressure dry air as its insulating medium—completely eliminating the need for SF6 gas. With an IP65-rated stainless steel enclosure and modular design, it delivers maintenance-free operation, compact footprint, and full compliance with environmental standards. Ideal for urban substations, commercial complexes, and industrial facilities seeking sustainable infrastructure, the CKAI-12 exemplifies Comking’s commitment to eco-friendly engineering.
CKAS-12 Series Environmental Protection Gas-Insulated RMU
Operating under a slight positive pressure of dry air (0.02 MPa), this SF6 free ring main unit China-engineered solution offers enhanced protection against moisture, dust, and salt fog—making it suitable for extreme environments, including coastal regions and high-altitude areas up to 5,000 meters. Its IP67-sealed gas compartment, combined with vacuum interruption technology and <10pC partial discharge performance, ensures long-term reliability without compromising planetary health.
CKFL-12/24/40.5 Series SF6 Fully Insulated RMU
While continuing to support legacy systems requiring SF6 insulation, Comking maintains ultra-low leakage rates (≤0.02% annually) and robust IP67 protection across this versatile series. Available in multiple voltage classes (12kV, 24kV, and 40.5kV), it serves as a transitional option for markets still adopting SF6-free alternatives—but with future-ready modularity that aligns with smart grid architectures.
“Global utilities and EPCs are increasingly demanding SF6 free ring main unit OEM solutions that balance performance, safety, and environmental responsibility,” said a spokesperson for Comking Power. “Our CKAI and CKAS series directly respond to this shift—offering drop-in replacements that eliminate greenhouse gas risks while exceeding IEC and IEEE standards.”
For global partners seeking a reliable, innovative, and sustainability-driven OEM RMU supplier China, Zhuhai Comking Electric stands ready to deliver scalable, green, and grid-resilient solutions.
About Zhuhai Comking Electric Co., Ltd.
A trusted name in medium-voltage switchgear since its founding, Comking specializes in ring main units, distribution transformers, and digital energy platforms. Committed to “Powering a Cleaner Grid,” the company exports to over 60 countries and actively contributes to global standards for eco-efficient electrical infrastructure.
Contact:
International Sales Team
Email: international-sales@zhcomking.com
Website: www.comkingpower.com