I. Overview
JHGTXGN15-12 Solid Insulated Ring Main Switchgear is a new generation of environmentally friendly composite insulated ring main unit. It is a fully sealed power supply unit, with all live parts and switches sealed in an epoxy resin shell, and no SF6 gas inside the shell. The entire switch device is not affected by external environment, ensuring operational reliability and personal safety, and achieving maintenance free operation.
Solid Insulated Ring Main Unit consists of three types of switches, namely V unit (circuit breaker unit), Unit C (load switch unit), Unit F (combined electrical apparatus unit), each unit can be used independently or expanded freely. Its structure is divided into intelligent control instrument room, operating mechanism and primary part. The instrument room can be equipped with microcomputer protection (controller). The primary part adopts APG automatic gel process, which completely seals the disconnector and arc extinguishing chamber in epoxy resin, and has special joints to connect with the bus. The arc extinguishing chamber uses special copper chromium contact materials, R type longitudinal magnetic field contacts, and complete primary sealing and drainage process. The arc extinguishing chamber can break short circuit current energy and stability, electrical life, temperature rise, and insulation level are all better than the previous arc extinguishing chamber (copper aluminum contact materials, Cup shaped longitudinal magnetic field contact structure and incomplete primary sealing and discharging process have been significantly improved. The operating mechanism adopts a spring operated mechanism that is integrated with the switch, that is, the isolation switch and the main switch spring operated mechanism are integrated as a whole, which can easily achieve interlocking, and the mechanism has fewer parts, reducing unnecessary transmission links, high reliability, and can be electrically operated according to user needs.
Solid insulation fully enclosed switchgear: It is a module with full insulation and sealing performance that uses solid insulation materials as the main insulation medium and conductive connections, isolating switches, grounding switches, main busbars, branch busbars, and other main electrical circuits that are single or combined and encapsulated with solid insulation medium to form one or several modules with certain functions that can be combined or expanded again.
The ring network unit is suitable for 12kV, 50H2 three-phase AC distribution systems, used for ring network power supply or terminal power supply. The ring network unit can be installed in the power distribution system of industrial and mining enterprises, residential areas, schools, parks, etc. It can also be installed in compact box type substations for the control and protection of distribution transformers. So both indoor and outdoor ring network units can achieve distribution automation.
II. Environmental conditions for use
-- Suitable for indoor or outdoor use.
Surrounding air temperature: indoor -10 ° C~+25 ° C, outdoor -60 ° C~+60 ° C.
-- Relative humidity of the air: daily average not exceeding 95%, monthly average not exceeding 90%.
The altitude shall not exceed 3000m.
-- The surrounding air should not be significantly polluted by dust, water vapor, salt spray, corrosive gases, or flammable gases; Outdoor type can be used in harsh environmental conditions.
The installation location should not experience severe vibrations and the seismic intensity should not exceed 8 degrees.
When the above environmental conditions cannot meet the usage requirements, the user shall negotiate with the manufacturer
III. Meet the standard
-- IEC62271-1-2007 High voltage switchgear and control gear Part One: General Specifications
-- IEC62071-2003 "1-52KV AC Metal Enclosed Switchgear and Control Equipment" · GB3906-2006 "3.6-40.5KV AC Metal Enclosed Switchgear and Control Equipment" · GB/T1022-2011 "Common Technical Conditions for High Voltage Switchgear and Control Equipment Standards"
-- GB1984-2014 High Voltage AC Circuit Breakers
-- GB1985-2014 "High Voltage AC Isolating Switches and Grounding Switches"
-- GB3804-2004 "3.6KV~40.5KV High Voltage AC Load Switches"
-- DL/T404-2007 "3.6KV~40.5kV AC Metal Enclosed Switchgear and Control Equipment" · DL/T593-2016 "Common Technical Conditions for High Voltage Switchgear and Control Equipment Standards"
-- Q/GDW730-2012 "Technical Conditions for 12kV Solid Insulated Ring Main Unit"
-- DL/T402-2016 High Voltage AC Circuit Breakers
| Model | Size |
| GTXGN15-12 | 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 worked with power companies, engineering contractors, industrial enterprises, renewable energy developers, and infrastructure projects to provide safe and reliable electrical solutions.
Through continuous communication with customers, we understand that modern power systems have higher expectations for switchgear equipment. Customers need products that are compact, safe, easy to maintain, environmentally friendly, and capable of stable operation for many years. This is why we developed our Epoxy Encapsulated 12kV Solid Insulated RMU Switchgear.
Our 12kV Solid Insulated Ring Main Unit uses advanced epoxy encapsulation technology to provide reliable insulation protection and stable electrical performance. Compared with traditional insulation solutions, solid insulation technology offers excellent mechanical strength, good environmental resistance, and reduced maintenance requirements.
This medium voltage RMU switchgear is designed for power distribution networks up to 12kV and is widely used in urban power grids, industrial facilities, renewable energy projects, commercial buildings, transportation systems, and infrastructure applications.
As a professional electrical equipment manufacturer located in Yueqing Economic Development Zone, China, we control every stage from product design and component selection to manufacturing, testing, and delivery. Our company follows ISO9001 quality management system, ISO14001 environmental management system, and ISO45001 occupational health and safety management system standards.
We believe that a reliable ring main unit is not simply an electrical cabinet. It is an important part of a complete power network. A stable RMU switchgear system helps customers reduce unexpected downtime, improve power safety, and achieve more efficient energy distribution.
Epoxy Encapsulated 12kV Solid Insulated RMU Switchgear is a Medium Voltage Ring Main Unit designed for electrical power distribution, switching control, and circuit protection. It is mainly used in distribution networks where electricity needs to be transferred safely from power sources to different users or equipment.
The key feature of this product is the epoxy encapsulated solid insulation structure. Instead of relying mainly on traditional insulation methods, the important electrical components are protected by high-performance epoxy insulation materials.
Epoxy resin has excellent insulation properties, mechanical strength, and resistance to environmental influence. By encapsulating electrical components with epoxy material, the equipment can achieve more stable insulation performance and improved protection against external conditions.
Our Epoxy Resin Insulated RMU Switchgear is designed to provide:
Reliable medium voltage power distribution
Stable insulation performance
Compact installation structure
Safe switching operation
Long service life with reduced maintenance requirements
For customers building modern power systems, selecting the right RMU switchgear is important because it directly affects network reliability, operational safety, and future maintenance costs.
The working principle of our Epoxy Encapsulated 12kV Solid Insulated RMU Switchgear is based on three main functions: electrical connection, insulation protection, and switching control.
When electrical power enters the ring main unit, current flows through the internal conductive system. The epoxy solid insulation layer surrounds key electrical components, creating a stable insulation environment and reducing the possibility of electrical discharge between different conductive parts.
During normal operation, switching components control the connection and disconnection of electrical circuits according to system requirements. When maintenance is needed, operators can safely isolate the required circuit section.
If an electrical fault occurs, protection devices help disconnect the abnormal circuit and reduce the impact on the rest of the power network. This helps improve system safety and reduce equipment damage.
| Operation Stage | Main Component | Function |
|---|---|---|
| Power Input | Main conductive system | Receives medium voltage electricity from the power network |
| Insulation Protection | Epoxy solid insulation structure | Provides electrical isolation and stable insulation performance |
| Switching Operation | Load switch and operating mechanism | Controls circuit connection and disconnection |
| Fault Protection | Protection components | Helps isolate abnormal electrical conditions |
Source: Working principle analysis based on medium voltage RMU engineering practices and Jihui Electric product design experience.
When we design RMU switchgear, we always focus on real customer applications. Electrical equipment may operate in factories, renewable energy stations, urban distribution networks, or commercial buildings. Each environment creates different challenges.
Our goal is to provide a product that combines safety, reliability, and practical operation advantages.
The epoxy encapsulation structure is one of the most important advantages of our RMU switchgear. The epoxy material provides stable insulation performance and strong mechanical protection.
This design helps protect internal electrical components from moisture, dust, and environmental changes. It also improves the overall reliability of the medium voltage distribution system.
Space is becoming increasingly valuable in modern electrical projects. Traditional equipment may require larger installation areas, while compact RMU solutions help customers optimize space usage.
Our 12kV Solid Insulated Ring Main Unit integrates switching and protection functions into a compact structure, making it suitable for urban substations, commercial facilities, and industrial power systems.
Medium voltage equipment must maintain stable operation under different load conditions. We carefully select electrical components and control manufacturing processes to ensure product consistency.
The solid insulation system provides reliable dielectric performance, helping the equipment maintain safe operation during long-term service.
Maintenance costs are an important concern for many customers. Equipment that requires frequent inspection can increase operating expenses and affect production efficiency.
Because our RMU switchgear uses solid insulation technology, it reduces maintenance requirements related to insulation systems and helps customers improve operational efficiency.
Different customers have different project requirements. Some projects need standard configurations, while others require customized solutions.
Our engineering team provides technical support based on customer specifications, electrical parameters, installation environment, and project requirements.
During product development, we focus on improving reliability, safety, and practical value. A medium voltage ring main unit must not only perform well in laboratory conditions but also operate reliably in real working environments.
The following comparison shows the general advantages of solid insulated RMU technology compared with traditional medium voltage distribution solutions.
| Comparison Item | Traditional RMU Solution | Epoxy Solid Insulated RMU Switchgear |
|---|---|---|
| Insulation Method | Traditional insulation structure | Epoxy solid insulation technology |
| Environmental Resistance | Depends on installation environment | Improved protection against moisture and dust |
| Maintenance Requirement | Regular insulation system checks | Reduced maintenance demand |
| Structure Design | Standard cabinet structure | Compact integrated design |
| Application Range | General distribution networks | Industrial, renewable energy, urban power systems |
Source: Technical comparison based on general medium voltage switchgear characteristics and Jihui Electric engineering evaluation.
The demand for safer and more efficient power distribution equipment continues to increase. Customers today are not only looking for a product with good electrical performance but also a solution that can provide long-term value.
Our Epoxy Encapsulated 12kV Solid Insulated RMU Switchgear combines advanced insulation technology, reliable manufacturing processes, and practical application experience to support modern power networks.
From material selection to final testing, we focus on every detail to ensure our customers receive dependable medium voltage equipment. Through continuous improvement, Jihui Electric Group continues to provide reliable electrical solutions for customers worldwide.
During our years of serving customers in different industries, we have learned that every power distribution project has unique requirements. Some customers need compact equipment because installation space is limited. Some require higher safety levels because their facilities operate continuously. Others focus on reducing maintenance costs and improving long-term reliability.
Our Epoxy Encapsulated 12kV Solid Insulated RMU Switchgear is designed to meet these practical needs. With stable insulation performance, compact structure, and reliable switching functions, it provides an effective solution for many medium voltage power distribution applications.
Renewable energy projects such as solar power plants, wind farms, and energy storage stations require stable medium voltage distribution equipment to connect generated power with the electrical grid.
Our 12kV Solid Insulated Ring Main Unit provides reliable power control and protection while supporting cleaner energy development. The solid insulation structure helps customers build environmentally responsible power systems with stable operating performance.
Industrial factories depend on continuous electricity supply. A sudden power interruption can stop production lines, affect delivery schedules, and increase operating costs.
Our Medium Voltage RMU Switchgear provides safe switching and protection functions for manufacturing facilities, including automotive plants, machinery factories, electronic production facilities, and other industrial applications.
Modern cities require compact and reliable electrical equipment because available installation space is often limited. Distribution systems in commercial areas, residential communities, and public facilities must operate safely with minimal maintenance.
The compact design of our Epoxy Resin Insulated RMU Switchgear makes it suitable for urban substations, commercial buildings, and infrastructure projects where space efficiency and reliability are important.
Transportation systems such as railways, airports, ports, and logistics centers require dependable electrical systems to maintain daily operations.
Our 12kV Solid Insulated Distribution Equipment supports safe power control and protection for transportation-related projects where stable electricity supply is essential.
Mining and petrochemical facilities often operate under complex environmental conditions. Electrical equipment used in these areas needs strong protection, reliable insulation, and stable performance.
Our enclosed solid insulated RMU switchgear provides a practical solution for demanding industrial environments where equipment reliability directly affects production safety.
| Application Field | Typical Projects | Main Requirement | RMU Solution Advantage |
|---|---|---|---|
| Renewable Energy | Solar, wind, energy storage | Green and reliable power connection | Solid insulation technology with stable operation |
| Industrial Manufacturing | Factories and production lines | Continuous electricity supply | Reliable switching and protection functions |
| Commercial Buildings | Shopping centers and office buildings | Compact installation | Space-saving medium voltage solution |
| Transportation | Railways, airports, ports | High system reliability | Safe electrical distribution control |
| Mining & Chemical | Industrial processing facilities | Strong environmental adaptability | Durable enclosed structure |
Source: Application summary based on Jihui Electric product application experience and medium voltage distribution project requirements.
At Jihui Electric Group, we believe that product reliability starts from manufacturing details. A high-quality RMU switchgear system requires strict control from the initial design stage to final delivery.
Our production process combines engineering experience, standardized manufacturing procedures, and quality inspection methods to ensure every unit meets customer requirements.
Before production begins, our engineering team communicates with customers to understand project requirements, including voltage level, installation environment, operating conditions, and technical specifications.
Based on this information, we provide suitable product configurations and customized solutions when required. This allows the equipment to better match the customer's actual application.
The quality of electrical materials directly affects product performance. We carefully select epoxy insulation materials, conductive components, cabinet structures, and protection devices.
The epoxy encapsulated insulation structure provides excellent electrical insulation and mechanical strength, helping the equipment maintain stable operation during long-term service.
During assembly, our production team follows standardized procedures to install each component accurately. Electrical connections, mechanical parts, and operating mechanisms are carefully inspected.
This production method improves product consistency and reduces possible quality problems caused by manufacturing differences.
Before shipment, every Epoxy Encapsulated 12kV Solid Insulated RMU Switchgear unit completes inspection and testing procedures.
We check insulation performance, electrical functions, mechanical operation, and overall equipment condition. Only products that pass inspection are approved for delivery.
| Production Stage | Inspection Focus | Purpose |
|---|---|---|
| Design Review | Technical parameters and project requirements | Ensure correct product selection |
| Material Control | Epoxy insulation and electrical components | Improve reliability and service life |
| Assembly Control | Component installation accuracy | Maintain product consistency |
| Final Testing | Electrical and mechanical performance | Ensure safe operation after delivery |
Source: Jihui Electric Group internal manufacturing process and quality inspection procedures.
Choosing an RMU switchgear supplier is an important decision for any power project. Customers need more than a product manufacturer. They need a partner who understands electrical systems, provides stable quality, and supports the project throughout the entire process.
At Jihui Electric Group, we combine manufacturing capability, engineering experience, and customer service to provide complete medium voltage power distribution solutions.
We specialize in medium and low voltage power transmission and distribution equipment up to 35kV. Our product range includes Cable accessories, Cable distribution boxes, ring main units, Prefabricated Substations, combination transformers, SF6 load switches, Vacuum circuit breakers, and solid insulated switchgear.
This broad product experience allows us to better understand different customer applications and provide suitable electrical solutions.
Quality control is an important part of our daily production management. Our company follows ISO9001 quality management system, ISO14001 environmental management system, and ISO45001 occupational health and safety management system standards.
These systems help us maintain stable manufacturing processes, responsible environmental practices, and safe production conditions.
Different industries have different electrical requirements. A factory may need continuous operation, while a renewable energy project may focus on environmental performance and grid connection reliability.
Our engineering team provides customized RMU solutions based on customer drawings, technical parameters, installation conditions, and project requirements.
For international customers, we provide complete export services including technical communication, production arrangement, inspection support, packaging protection, and transportation coordination.
According to product size, order quantity, and destination, we arrange suitable transportation methods including sea transportation, land transportation, or combined logistics.
| Service Item | Our Capability |
|---|---|
| Product Development | Medium voltage equipment design and engineering support |
| Manufacturing | Standard production and customized RMU solutions |
| Quality Inspection | Electrical testing and factory inspection |
| Packaging | Professional protection for international transportation |
| After-Sales Support | Technical assistance and project service |
Source: Jihui Electric Group production, service, and international delivery information.
It is a medium voltage ring main unit that uses epoxy solid insulation technology to provide reliable power distribution, switching control, and electrical protection for 12kV systems.
Epoxy solid insulation provides excellent electrical insulation performance, mechanical strength, and environmental resistance. It helps improve equipment reliability and reduce maintenance requirements.
It can be used in renewable energy projects, industrial plants, urban power networks, commercial buildings, transportation systems, mining projects, and other medium voltage applications.
Yes. We provide customized solutions according to customer technical requirements, electrical parameters, installation conditions, and project specifications.
We control quality through material inspection, standardized manufacturing, electrical testing, and final inspection before delivery.
We support international delivery through sea transportation, land transportation, and combined logistics solutions according to customer requirements.
As global power systems continue to develop, customers need electrical equipment that provides safety, reliability, and long-term value. The demand for compact and environmentally friendly medium voltage solutions is increasing in many industries.
Our Epoxy Encapsulated 12kV Solid Insulated RMU Switchgear represents our commitment to providing dependable power distribution equipment. Through advanced insulation technology, professional manufacturing, and strict quality management, we help customers build safer and more efficient electrical networks.
From renewable energy facilities and industrial plants to urban infrastructure projects, Jihui Electric Group continues to support global partners with reliable medium voltage solutions.
We believe that every stable power system starts with reliable equipment. With professional technology, manufacturing experience, and customer-focused service, we are ready to provide high-quality RMU switchgear solutions for future energy development.
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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