• RMR-12kV...17.5kV...24kV SF6Ring Main Unit
RMR-12kV...17.5kV...24kV SF6Ring Main Unit
discuss personally
Model
RMR-24
RMR-17.5
RMR-12
Basic info
Brand ROCKWILL
Model NO. RMR-12kV...17.5kV...24kV SF6Ring Main Unit
Rated voltage 24kV
Rated normal current 630A
Series RMR
Product Detail

Description :

 The RMR series is a medium voltage ring main unit insulated with SF6. The main switch can be a vacuum circuit breaker with permanent magnet mechanism or spring mechanism. It combines air insulation with SF6 gas compartment, which is compact and expandable, suitable for distribution automation. It has a compact structure, flexible operation, reliable interlocking, adopts sensing technology and the latest protective relays, advanced technology, lightweight and flexible assembly, suitable for various occasions, and meets the needs of different users.

Main function introduction:

  • Excellent Insulation Performance

  • Good Arc - Quenching Ability

  • Compact Structural Design

  • Reliable Sealing Performance

  • Flexible Operation and Maintenance

  • Comprehensive Protection and Safety Performance

Technology parameters:

1.jpg

Foundation schematic diagram

image.png

image.png

Q:What is the SF6 ring main unit?

A:An SF6 ring main unit is a key component in medium - voltage power distribution systems. It uses SF6 gas for insulation and arc - quenching. Compact in design, it integrates functions like switching, protection, and connection. It ensures stable power supply in various scenarios, from urban grids to industrial zones, with high reliability and safety.

Q:How is SF6 measured?

A:SF6 can be measured in several ways. One common method is using a gas density monitor to measure the density of SF6 in a closed system. Another is via a pressure gauge to check its pressure, as pressure is related to gas content. Additionally, infrared spectroscopy can be used to analyze the concentration of SF6 in the air.

Q:What is the purpose of RMU?

A:The Ring Main Unit (RMU) serves crucial purposes in electrical distribution. It enables efficient power distribution in urban areas, industrial complexes, and commercial buildings. RMUs house switches, fuses, and circuit breakers to control and protect electrical circuits. They simplify connections between power sources and consumers, enhance grid reliability, and help manage load distribution, ensuring stable power supply.



Know your supplier
ROCKWILL
Rockwill Electric Group Global Manufacturer of High voltage and medium-voltage power equipment and smart grid solutions. Headquartered in Wenzhou, China. Serving 100+ countries with quality, innovation, and trust. What We Offer: • HV-MV switchgear (VCB, SF₆ circuit breakers, RMU, GIS) • Distribution transformers and substations • Smart grid and monitoring systems • Solar, wind, EV charging, and energy storage solutions • EPC turnkey power projects Certified: ISO 9001 / ISO 14001 / ISO 45001
Main Categories
High voltage
Business Type
Design/Manufacture/Sales
Highest Annual Export (USD)
$150,000,000
Professional Experience
16 years
Workplace
108000m²m²
占位
占位
Related Products
Related Knowledges
Design and Application of Smart EV Charging Piles
Design and Application of Smart EV Charging Piles
As a charging pile designer deeply involved in industry projects, I've witnessed firsthand how electric vehicles (EVs) have become a pivotal force in China's new energy landscape. Decades of advancements in electronics have laid a solid foundation for EV development. The integration of V2G, energy storage technologies, and high-performance batteries not only facilitates battery swapping services but also drives the convergence of photovoltaics, energy storage, and intelligent charging systems&md
Echo
06/24/2025
Electric Vehicle Charging Pile Testing Technologies and Failure Analysis
Electric Vehicle Charging Pile Testing Technologies and Failure Analysis
1. Detection Technology for Electric Vehicle Charging PilesEV charging piles are primarily divided into two categories:DC charging pilesandAC charging piles. Let's start with DC charging piles: they communicate with the EV's battery management system (BMS) and directly charge the power battery through the DC charging interface. AC charging piles, on the other hand, rely on the EV's AC charging interface and use the vehicle-mounted charger to complete the charging process. These two types of char
Oliver Watts
06/23/2025
DC Charging Pile Enclosure Electrification Fault Inspection
DC Charging Pile Enclosure Electrification Fault Inspection
1. Fault CasesCase 1 (July 16, 2024)A district manager got a report of a charging pile outage at a square, affecting users and appliances. I, with O&M staff, found the pile was dead but charged EVs normally—yet the neutral wire/cabinet was live.Inspection steps:Relays, contactors, AC contactors checked → switching power supply had no output.Inverter, fuse, AC power tested → live current detected.Internal check: AC power and modules normal; secondary wiring intact.Cooling fan
Felix Spark
06/23/2025
Failure Analysis of Electric Vehicle AC Charging Piles
Failure Analysis of Electric Vehicle AC Charging Piles
As new energy electric vehicles become increasingly popular, the number of supporting public charging piles is growing year by year. Whether the measurement value of AC charging piles for electric vehicles is accurate is directly related to the vital interests of the vast number of electric vehicle owners. So, conducting regular mandatory inspections of charging piles is particularly important. Below, combined with relevant regulations and practical work, I’ll share some experience and pra
Felix Spark
06/23/2025
What aspects does the design of electric vehicle charging stations involve?
What aspects does the design of electric vehicle charging stations involve?
As a frontline designer, I work on EV charging piles daily. Amid worsening global climate change and China’s rapid economic growth, green mobility like e - bikes and electric cars has boomed, yet charging issues have become a focal concern. The risky “Bypass Wire” charging has spurred huge demand for professional piles. Having taken part in the CNPC First Construction residential charging pile renovation, I’m sharing my hands - on experience.I. Industry Context(1) Electri
Dyson
06/23/2025
What aspects does the inspection of industrial and commercial energy storage cover?
What aspects does the inspection of industrial and commercial energy storage cover?
As a frontline tester, I work with industrial and commercial energy storage systems daily. I know firsthand how critical their stable operation is for energy efficiency and business profitability. While installed capacity grows rapidly, equipment failures increasingly threaten ROI—over 57% of energy storage plants reported unplanned outages in 2023, with 80% stemming from equipment defects, system anomalies, or poor integration. Below, I share practical testing insights for the five core s
Oliver Watts
06/21/2025
×
Inquiry
Download
Experts Electrical is dedicated to serving the personnel in the global power industry.
Join Experts Electrical, not only can you discover power equipment and power knowledge, but also canhnd like - minded friends!