I. Overview:
The HXGN15-12 modular sulfur hexafluoride ring main unit is suitable for AC 50HZ, 12kV power systems. Widely used in industrial and civilian cable ring networks and power supply terminals.
II. Main purpose
-- The HXGN15-12 modular sulfur hexafluoride ring main unit is suitable for AC 50HZ, 12kV power systems. Widely used in industrial and civilian cable ring networks and power supply terminals.
-- Specially suitable for the following places: small secondary substations, switch stations, urban residential area power distribution, industrial and mining enterprises, shopping malls, airports, subways, wind power generation, hospitals, sports venues, railways, etc.
III. Normal usage conditions
-- Altitude: ≤ 1000m. (If there are special requirements, please specify them when ordering. Currently, there are 6 groups operating at an altitude of 5200m.)
-- Environmental temperature: -35 ° C+45 ° C, maximum daily average temperature difference ≤ 25 ° C.
-- The average daily relative humidity should not exceed 95%, and the average monthly relative humidity should not exceed 90%.
-- Seismic resistance: 8 degrees.
-- Places with severe vibrations and impacts, as well as no fire, chemical corrosion, or explosion hazards.
IV. Execution standard
IEC298 IEC265 IEC129 IEC694 IEC420 IEC56
IEC529 IEC932 Gb3804 Gb3906 GB11022
V. Cabinet Structure
-- The ring main unit cabinet is formed by riveting 2mm thick aluminum-zinc-coated plates (or cold-rolled plates after powder coating). There are two pressure release holes at the back of the cabinet, one for the cable compartment and the other for the load switch/membrane compartment. This structure can maximize the reliability of personnel installation and equipment operation.
-- Each compartment
-- Cable compartment: The cable compartment is located at the top of the cabinet and is connected to adjacent switch cabinets.
-- Load switch: It is an independent unit and is filled with SF6 gas inside.
-- Cable compartment: Approximately 75% of the space is used for cable connections, fuses, grounding switches, CTs, PTs installation.
-- Mechanism compartment and interlock: The compartment includes the operating mechanism, mechanism interlock, position indication, auxiliary contacts, trip coils, live display, and interlock.
-- Relay box: The relay box is at the top of the cabinet and is optional. The compartment is used to install special devices such as instruments, relays, and motor units.
-- Circuit breaker compartment: One circuit breaker can be placed below the load switch.
-- Pressure release
-- Above pressure release: This is for releasing the gas pressure generated during arc accidents in the cable and load switch compartments.
-- Below pressure release: This is for releasing the gas pressure generated during arc accidents in the cable compartment.
| Model | Size |
| HXGN15-12 | 130*100*200cm |
At Jihui Electric Group Co., Ltd., we specialize in the research, development, manufacturing, and service of medium and low voltage power transmission and distribution equipment. For many years, we have been supporting customers from power utilities, industrial companies, renewable energy projects, engineering contractors, and infrastructure industries with reliable electrical solutions.
Our IEC Standard HXGN MV Air Insulated RMU is designed to provide safe, stable, and efficient power distribution performance for medium voltage electrical networks. As a professional manufacturer of medium voltage switchgear, we understand that customers need equipment that is not only technically qualified but also practical for long-term operation.
In real projects, electrical equipment must deal with many challenges. Power systems need to operate continuously, maintenance time needs to be reduced, installation space is often limited, and equipment must meet strict safety requirements. Our HXGN Medium Voltage Ring Main Unit is developed based on these practical needs.
The IEC Standard HXGN MV Air Insulated RMU combines reliable switching technology, compact structural design, and flexible configuration options. It is widely used in 12kV medium voltage power distribution systems, including urban networks, industrial plants, commercial buildings, renewable energy facilities, mining projects, and transportation infrastructure.
Through continuous improvement in product design, manufacturing processes, and quality management, we aim to provide customers with dependable medium voltage power distribution equipment that supports safe and efficient electrical systems.
IEC Standard HXGN MV Air Insulated RMU is a medium voltage ring main unit designed according to international electrical equipment requirements. It uses air as the main insulation medium and adopts a metal enclosed structure to provide reliable protection and stable operation.
RMU stands for Ring Main Unit. It is an important part of modern medium voltage distribution networks. Unlike a simple radial power supply system, a ring network allows electricity to flow through multiple paths. This improves power supply flexibility and helps reduce the impact of electrical faults.
Our HXGN MV Air Insulated RMU is mainly used in medium voltage systems up to 12kV. It integrates switching, control, and protection functions into one compact unit.
The equipment normally includes:
Metal enclosure cabinet
Load switch unit
Earthing switch
Busbar system
Cable connection components
Protection and control devices
The air insulated structure makes the equipment easier to maintain and inspect. Compared with some other insulation methods, air insulation provides a simple and practical solution for many indoor medium voltage applications.
Understanding how an RMU works helps customers choose the right power distribution equipment. The main purpose of our IEC Standard HXGN MV Air Insulated RMU is to control electrical circuits safely and maintain stable power supply.
During normal operation, electricity enters the RMU through the incoming cable. The internal busbar system distributes electrical energy to outgoing circuits. Operators can control the connection and isolation of circuits through switching devices.
When maintenance is required, the operator can disconnect the related circuit and use the grounding switch to ensure a safer working condition.
If a fault occurs, such as overload or short circuit, the protection system helps isolate the affected section. This prevents the problem from spreading to the entire network and helps maintain electricity supply in other areas.
The working process can be summarized as:
Power enters through incoming cable connection.
Switching units control power distribution.
Protection devices monitor abnormal conditions.
Fault sections are isolated when necessary.
Remaining network sections continue operating.
This design makes HXGN Medium Voltage Ring Main Unit suitable for projects where power reliability and operational safety are important.
Our HXGN MV Air Insulated RMU follows IEC-based design concepts and manufacturing requirements. This helps ensure the equipment meets common international expectations for medium voltage switchgear performance.
For overseas customers, using IEC standard electrical equipment can make project communication, technical approval, and system integration easier.
Space is becoming more valuable in modern cities and industrial facilities. Electrical rooms often have limited installation areas, so compact equipment design is very important.
Our air insulated ring main unit uses an optimized structure that reduces installation space while keeping necessary electrical functions.
This makes it suitable for:
Urban underground distribution systems
Factory electrical rooms
Commercial buildings
Renewable energy stations
Safety is always one of our main considerations when designing medium voltage equipment.
The metal enclosed structure protects internal components and provides a safer working environment for operators. The internal arrangement also helps technicians complete inspection and maintenance work more efficiently.
Different customers have different project requirements. Some systems need simple incoming and outgoing units, while others require additional protection and control functions.
Our IEC Standard HXGN MV Air Insulated RMU supports flexible configurations according to:
Voltage requirements
Network structure
Cable connection method
Protection requirements
Project standards
Medium voltage equipment works under continuous electrical stress. Stable insulation performance and reliable switching operation are important for long-term use.
Our manufacturing process focuses on component quality, assembly accuracy, and factory testing to ensure stable product performance.
When selecting medium voltage switchgear, customers usually compare safety, reliability, maintenance requirements, and installation efficiency.
Based on our engineering experience, IEC Standard HXGN MV Air Insulated RMU provides several practical advantages for modern power distribution systems.
| Comparison Item | Traditional Distribution Equipment | IEC Standard HXGN MV Air Insulated RMU |
|---|---|---|
| Structure | More separate components and larger installation space | Integrated ring main unit structure with compact design |
| Safety Protection | Lower protection against accidental contact | Metal enclosed design improves operator safety |
| Maintenance | Requires more inspection time | Clear internal arrangement for easier maintenance |
| Network Application | Mainly suitable for simple distribution | Designed for ring network power distribution |
Source: Comparison based on IEC 62271 series medium voltage switchgear application principles and common electrical engineering practices.
| Equipment Type | Typical Voltage Level | Main Function | Common Application |
|---|---|---|---|
| HXGN MV Air Insulated RMU | Up to 12kV | Ring network switching and protection | Urban grids, industrial facilities, renewable projects |
| Low Voltage Switchgear | Below 1kV | Final distribution control | Buildings and machinery systems |
| High Voltage Switchgear | Above 12kV | Large power transmission control | Substations and power plants |
Source: Equipment classification based on IEC electrical equipment categories and practical power distribution applications.
Electricity is the foundation of modern industries. Manufacturing plants, transportation systems, commercial buildings, and renewable energy projects all depend on stable power supply.
A failure in a medium voltage distribution system can lead to production delays, equipment downtime, and higher operating costs. Therefore, choosing reliable switchgear is an important step in every electrical project.
When developing our IEC Standard HXGN MV Air Insulated RMU, we focus on practical customer needs:
Long-term stable operation
Safe electrical control
Easy maintenance
Flexible project adaptation
Reliable protection performance
Power systems are changing quickly with the development of smart cities, renewable energy, and industrial automation. Customers need electrical equipment that can support new applications while maintaining reliable operation.
Our IEC Standard HXGN MV Air Insulated RMU provides a practical solution for modern medium voltage distribution systems. With compact design, reliable performance, and flexible configuration, it helps customers build safer and more efficient electrical networks.
During our years of manufacturing medium voltage power distribution equipment, we have worked with customers from different industries and learned that every project has different requirements. Some customers focus on continuous power supply, some need compact equipment for limited spaces, and others require stable operation in special environments.
The IEC Standard HXGN MV Air Insulated RMU is designed to solve these practical problems. With reliable switching performance, flexible configuration, and a compact structure, our HXGN Medium Voltage Ring Main Unit is suitable for a wide range of applications.
Power companies require equipment that can maintain stable electricity supply for cities and communities. Medium voltage distribution networks are responsible for transferring electricity from substations to different users.
Our IEC Standard HXGN MV Air Insulated RMU helps improve network flexibility by supporting ring network operation. When a fault occurs in one section, the affected area can be isolated while other sections continue receiving power.
This makes the equipment suitable for:
Urban power distribution networks
Underground cable systems
Residential power supply projects
Public utility facilities
Modern factories depend on stable electricity to maintain production efficiency. Equipment downtime caused by unstable power supply can result in production delays and additional costs.
Our HXGN MV Air Insulated RMU provides reliable medium voltage power control for industrial applications. It can be used in factories and industrial parks where safe electrical distribution is required.
Common industrial applications include:
Automotive manufacturing
Machinery production
Electronic manufacturing
Metal processing
Food production
Chemical plants
The growth of renewable energy has increased demand for reliable medium voltage connection equipment. Solar farms, wind power projects, and energy storage systems require safe and stable electrical distribution solutions.
The IEC Standard HXGN MV Air Insulated RMU can be integrated into renewable energy systems to provide switching and protection functions between power generation equipment and distribution networks.
Its compact structure is especially useful for renewable energy projects where installation space is limited.
Hospitals, shopping centers, office buildings, airports, and transportation facilities require continuous electricity supply.
Power distribution equipment used in these locations must provide safe operation and reliable performance. Our indoor air insulated ring main unit offers a practical solution for these applications.
Heavy industries often operate large electrical loads and require durable power distribution equipment. Mining areas, petrochemical facilities, and large industrial sites need switchgear that can support long-term operation.
Our HXGN series RMU provides reliable medium voltage switching and protection functions for demanding industrial environments.
| Industry | Main Electrical Challenge | HXGN MV Air Insulated RMU Solution |
|---|---|---|
| Power Utilities | Need stable electricity distribution | Ring network operation improves supply flexibility |
| Manufacturing | Need continuous production power | Reliable switching and protection functions |
| Renewable Energy | Need safe grid connection | Flexible medium voltage distribution solution |
| Commercial Buildings | Limited installation space | Compact indoor switchgear design |
Source: Application analysis based on medium voltage power distribution engineering practices and Jihui Electric product application experience.
At Jihui Electric, we believe reliable electrical equipment comes from careful manufacturing. A medium voltage ring main unit is not only a metal cabinet. Every material, component, connection, and testing step affects the final product performance.
Our production process includes engineering design, material preparation, cabinet manufacturing, component installation, electrical testing, and final inspection.
Before manufacturing begins, our engineering team reviews customer requirements carefully. We confirm technical information including:
Rated voltage requirements
Electrical system configuration
Installation environment
Cable connection requirements
Protection functions
For customized projects, we communicate with customers to make sure the equipment matches their actual operating conditions.
The enclosure is an important part of the air insulated ring main unit. It protects internal electrical components and provides mechanical strength.
During production, we use professional manufacturing processes including:
Steel sheet cutting
Precision bending
Welding
Surface treatment
Cabinet assembly
Accurate cabinet manufacturing helps ensure structural stability and long service life.
After cabinet production, our technicians install electrical components according to engineering drawings.
The installation process includes:
Switching mechanism installation
Busbar connection
Grounding system installation
Protection device installation
Control circuit wiring
Each connection is carefully inspected to ensure electrical reliability.
Before delivery, every IEC Standard HXGN MV Air Insulated RMU undergoes professional inspection.
Our factory testing includes:
Insulation performance testing
Switch operation testing
Mechanical function checking
Electrical connection inspection
Appearance quality inspection
These tests help confirm that products meet customer requirements before shipment.
For medium voltage equipment, quality control is directly connected with customer safety and system reliability. We understand that electrical equipment may operate continuously for many years, so every production stage requires careful management.
Jihui Electric operates according to internationally recognized management systems:
ISO9001 Quality Management System
ISO14001 Environmental Management System
ISO45001 Occupational Health and Safety Management System
These systems guide our product design, manufacturing, inspection, and service processes.
Jihui Electric Group specializes in medium and low voltage power transmission and distribution equipment up to 35kV.
Our product range includes:
IEC Standard HXGN MV Air Insulated RMU
Medium Voltage Switchgear
Low Voltage Switchgear
Combination Transformers
This complete product portfolio allows us to provide integrated power distribution solutions for different industries.
Every electrical project has different requirements. We provide customized support based on customer applications.
Our technical team can assist with:
Product selection
Technical parameter confirmation
System configuration recommendations
Project requirement analysis
Delivery coordination
We support overseas customers with complete export services from production to delivery.
Our service includes:
Technical communication
Production scheduling
Quality inspection support
Export packaging
Transportation arrangement
After-sales technical support
According to product size, quantity, and destination, we select suitable transportation methods including sea transportation, land transportation, or combined transportation.
Professional packaging methods are used to protect equipment from moisture, vibration, and impact during transportation.
IEC Standard HXGN MV Air Insulated RMU is a medium voltage ring main unit using air insulation technology. It is designed for safe switching, control, and protection in medium voltage power distribution systems.
HXGN series RMU products are commonly used in medium voltage systems up to 12kV, depending on customer technical requirements and product configuration.
Air insulated RMU provides a simple and practical structure, convenient maintenance, reliable operation, and suitability for many indoor medium voltage applications.
Yes. We can provide customized solutions according to electrical parameters, installation conditions, project standards, and customer requirements.
Jihui Electric has ISO9001, ISO14001, and ISO45001 certifications, supporting our commitment to quality manufacturing, environmental responsibility, and safe production.
Choosing the right medium voltage switchgear supplier is important for the long-term safety and stability of electrical systems.
Our IEC Standard HXGN MV Air Insulated RMU combines reliable performance, practical design, flexible configuration, and professional manufacturing control. It is developed for customers who need dependable medium voltage power distribution equipment.
From engineering design and production to testing, packaging, and delivery, we focus on every detail that affects product quality.
As a professional manufacturer of medium and Low voltage power distribution equipment, Jihui Electric Group continues to provide reliable electrical solutions for customers worldwide.
If you are looking for an IEC Standard HXGN MV Air Insulated RMU manufacturer, HXGN Medium Voltage Ring Main Unit supplier, or customized medium voltage switchgear solution, we are ready to support your project with professional technology and service.
JiHui Electric Group Co., Ltd , high-end website construction, foreign trade website construction, marketing website construction, website optimization, development websites, corporate network marketing, search engine promotion, wechat mini program, corporate mailbox, short video operation, etc.
No. 161 Jingliu Road, Yueqing Economic Development Zone, Yueqing City, Zhejiang Province, China
jh.power@jihuielec.com
+86 18967711966
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