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| Categories | MV Ring Main Unit（RMU) |
|---|---|
| Certification: | GB/IEC/ISO |
| Brand Name: | ChangYun |
| Place of Origin: | China |
| Company Info. |
| Jiangsu Changyun Intelligent Technology Co., Ltd |
| Verified Supplier |
| View Contact Details |
| Product List |
The Primary & Secondary Integrated Ring Main Unit (RMU) combines medium-voltage primary switchgear with intelligent secondary protection, control, monitoring and communication functions in one compact factory-assembled solution.
Designed for 12kV and 24kV distribution networks, it enables reliable power distribution, load switching, intelligent fault detection, fast fault isolation and automatic service restoration. The integrated design significantly improves distribution automation efficiency while reducing installation time and lifecycle costs.
The primary switchgear and secondary protection, control and communication modules are fully integrated, pre-wired and factory tested before delivery.
Compared with conventional RMUs, the integrated solution offers:
The fully insulated, hermetically sealed design protects all live parts from environmental influences.
Benefits include:
The integrated intelligent controller provides comprehensive feeder protection and supports modern smart grid applications.
Functions include:
Designed to maximize operator safety while simplifying daily operation and maintenance.
Features include:
The Primary & Secondary Integrated RMU is widely used in modern medium-voltage distribution systems, including:
A Primary & Secondary Integrated Ring Main Unit (Smart RMU) integrates medium-voltage primary switchgear with secondary protection, control, monitoring and communication systems into one compact factory-assembled unit. It simplifies installation while improving distribution automation, operational reliability and maintenance efficiency.
Our Primary & Secondary Integrated RMUs are available in 12kV and 24kV configurations. Other customized specifications can be provided according to project requirements.
The integrated controller supports industry-standard communication protocols, including:
It can be seamlessly integrated with SCADA, Distribution Management Systems (DMS) and utility distribution automation platforms.
Yes. The Smart RMU supports Feeder Automation (FA), enabling rapid fault detection, fault isolation and automatic restoration of power to healthy sections, significantly improving power supply reliability.
Yes. It is equipped with a battery-free self-powered protection system, eliminating the need for an external auxiliary power supply while ensuring reliable protection functions.
Yes. We provide OEM and project-specific customization based on customer requirements, including different panel configurations, communication systems, protection schemes, operating mechanisms and enclosure designs.
It is widely used in:
The RMU is designed and manufactured in accordance with applicable IEC standards. Specific compliance (such as IEC 62271 series) and project-specific requirements can be provided upon request.
Changyun has over 17 years of manufacturing experience in medium-voltage power distribution equipment. We provide:
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