HM Power Switchgear/RMU
Revolutionize the power distribution industry with green, reliable and intelligent technologies
HM Power 12kV, 24kV atmospheric pressure Sealed nature-air insulated RMU/switchgear (ASNA) -- SF₆ free medium voltage switchgear. The product features five core characteristics: green, safe, reliable, maintenance-free and flexible combination, and meets the EU's ban on SF6 gas regulations. With sixteen years of stable operation experience and 6,0000 units, we provide highly reliable and sustainable green power distribution solutions for the power system.
HM Power ASNA RMU
Revolutionize the power distribution industry with green, reliable and intelligent technologies
HM Power 12kV, 24kV atmospheric pressure Sealed nature-air insulated RMU/switchgear (ASNA) -- SF₆ free medium voltage switchgear. The product features five core characteristics: green, safe, reliable, maintenance-free and flexible combination, and meets the EU's ban on SF6 gas regulations. With sixteen years of stable operation experience and 6,0000 units, we provide highly reliable and sustainable green power distribution solutions for the power system.
Overview
ASNA RMU/switchgear
HM Power offers a full range of RMU/switchgear based on ASNA technology, covering all medium-voltage power distribution requirements.
| Category | Technical Specifications |
| Voltage Classes | 12kV, 24kV |
| Type and Configuration | Circuit breaker unit, cable connection unit, busbar PT unit, circuit breaker unit with PT, incoming line PT unit, busbar sectioning unit, metering unit, and related accessories |
| Way to Install | In door, out door, prefabricated substation |
| Intelligentization Level | Basic type, intelligent type, self-healing system type |
Product
Modular functional unit
It can be used for transformer protection, line protection, and is compatible with tripping coils and electric operating mechanisms, supporting electric opening and closing. There are multiple specifications and sizes available for selection, including B, BB, BBB, and BBBB schemes.
Cable connection unit, compatible with all series of cabinets, convenient wiring, meeting the cable connection requirements of various incoming and outgoing lines.
Primary and secondary electrical isolation, accurately collecting the operating voltage of the busbar, providing busbar voltage sampling signals for instruments, measurement and control, and energy metering devices.
The circuit breaker and voltage transformer are integrated as one, featuring both circuit protection and voltage monitoring functions. The modular integrated design saves cabinet space and reduces the on-site installation of PT cables.
The voltage monitoring unit specially designed for the incoming line circuit can monitor the incoming line voltage status in real time, providing data support for the front-end power distribution protection and operation and maintenance monitoring.
Realize the connection and isolation of busbar sections, flexibly split distribution circuits, and enhance the reliability of distribution network power supply and the flexibility of operation and maintenance.
Integrated with high-precision electric energy metering modules, it accurately counts the power consumption data of circuits and is suitable for industrial and commercial, as well as distribution metering scenarios in transformer areas.
Replace it with a circuit breaker cabinet and a relay protection device.
Replace it with a circuit breaker cabinet and a relay protection device.
Replace it with a circuit breaker cabinet and a self-powered relay protection device.
Accessories related to ASNA RMU/switchgear, such as CT, PT, cable accessories, sensors, insulators, etc.
certification
certification and qualifications
HM Power ASNA series sf₆ free RMU/switchgear is developed and produced strictly in accordance with IEC international electrical and power standards, with more than 100 independent core patents and complete intellectual property rights.
The product has passed international certifications such as KEMA and CE, and is widely used in core fields such as power, aerospace, scientific research, municipal services, and transportation. It has been applied in landmark projects such as the world's largest National FAST astronomical telescope, the Beijing Aerospace Control Center in China, the headquarters building of State Grid, the float glass in Tanzania, Arant Airport, and the Tesla Supercharging Station in Northern Europe.
Questions and answered
A: The entire ASNA RMU/switchgear series adopts natural air insulation and are designed without SF₆, with a GWP value of 0. They fully comply with the EU's 2026 SF₆ ban standard, eliminating the risk of policy phase-out and meeting the carbon neutrality and environmental protection compliance requirements of countries around the world
A: With KEMA type tests, CE certification and ISO three-system certification, we have a complete set of English certificates and test reports
A: It can be replaced at the original position
A: The pressure balancing device with air filtration function ensures that the air inside the sealed box is not affected by external environmental pollution, preventing dust, salt spray and condensation. It guarantees that the main circuit is always in a good operating environment and can be adapted to various harsh scenarios such as coastal salt spray, damp sand and dust, high temperature and severe cold, with extremely strong adaptability to working conditions.
A: Supports personalized customization. According to the standards of different national power grids and project requirements, functional modules and intelligent configurations can be customized to be compatible with overseas agents and EPC cooperation models.
A: Relying on a standardized mass production system, we have sufficient production capacity and stable inventory, supporting the timely delivery of large orders. We can adapt to all types of international trade terms such as FOB, CIF, and DDP, ensuring the efficient implementation of cross-border projects.
A: We can provide fully English technical manuals, installation videos, remote commissioning guidance, and online technical training. For benchmark large-scale projects, we can support the dispatch of engineers to conduct on-site surveys, installation guidance and acceptance services.
A: The designed service life is 40 years. The equipment does not require leak detection and air replenishment treatment. The full life cycle operation and maintenance cost is reduced by more than 60%, and the overall TCO drops by over 30%. The long-term operation cost performance is far higher than that of inflatable equipment
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No matter which stage your project is at, our professional team of engineers can provide you with full-process professional support from product selection, solution design, factory visits to delivery and maintenance.
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