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 focus on developing and manufacturing reliable medium and low voltage power transmission and distribution equipment. With years of experience in electrical equipment production, we understand that modern power systems require more than basic switching functions. Customers need equipment that can operate safely, remain stable for years, reduce maintenance pressure, and adapt to increasingly demanding application environments.
Our Flame Retardant Epoxy Solid Insulated Enclosed Switch Cabinet is designed based on these practical requirements. This product combines epoxy solid insulation technology, enclosed structure design, and reliable medium voltage switching functions to provide a safer solution for power distribution systems up to 35kV.
Unlike traditional electrical cabinets that may have higher requirements for insulation maintenance, our epoxy solid insulated switch cabinet uses high-performance epoxy insulation materials to improve electrical insulation performance and environmental adaptability. The flame retardant design provides additional protection in applications where safety and fire resistance are important concerns.
As a professional manufacturer located in Yueqing Economic Development Zone, China, we provide complete services from product research and development, manufacturing, inspection, delivery, and technical support. Our products are widely used in power energy projects, industrial manufacturing plants, renewable energy systems, transportation facilities, commercial buildings, mining projects, and petrochemical industries.
We believe that a good medium voltage switch cabinet should not only meet technical standards but also solve real problems for customers. Whether the project requires stable electricity supply, compact installation, environmental protection, or customized design, our engineering team works closely with customers to provide suitable solutions.

A Flame Retardant Epoxy Solid Insulated Enclosed Switch Cabinet is a type of Medium Voltage Electrical Equipment used for power distribution, circuit control, and electrical protection. It is designed to safely receive, distribute, and control electrical power in medium voltage networks.
The main difference between this type of switch cabinet and traditional designs is the use of epoxy solid insulation technology. Epoxy resin is a strong insulating material with good electrical performance, mechanical strength, and environmental resistance. It helps protect internal electrical components while improving the overall safety of the equipment.
The enclosed cabinet structure provides physical protection for internal components and helps reduce the influence of dust, moisture, and external conditions. This makes the equipment suitable for many industrial and infrastructure applications where reliable operation is important.
Our Flame Retardant Epoxy Solid Insulated Enclosed Switch Cabinet mainly includes several important functions:
Medium voltage power distribution and control
Electrical circuit isolation and protection
Safe switching operation
Equipment protection during abnormal electrical conditions
Reliable operation in complex environments
For customers, choosing the right switch cabinet is not only about purchasing electrical equipment. It is about ensuring that the entire power system can continue operating safely and efficiently.
The working principle of our Flame Retardant Epoxy Solid Insulated Enclosed Switch Cabinet is based on controlling and protecting medium voltage electrical circuits through switching components, insulation systems, and protection devices.
When electrical power enters the switch cabinet, current flows through the main conductive components. The epoxy solid insulation surrounds key electrical parts and creates a stable insulation environment. This prevents unwanted electrical discharge between different conductive sections.
When operators need to control the power supply, switching devices inside the cabinet can connect or disconnect the circuit according to operating requirements. In case of abnormal situations such as overload or short circuit, protection components quickly separate the faulty circuit to help prevent further damage.
The enclosed structure also provides mechanical protection and improves operational safety. By combining electrical insulation, switching control, and protective functions, the equipment helps maintain stable power distribution.
| Working Process | Main Component | Function |
|---|---|---|
| Power Receiving | Main conductive system | Receives medium voltage electrical energy |
| Electrical Insulation | Epoxy solid insulation materials | Provides insulation protection and prevents electrical faults |
| Circuit Control | Switching mechanism | Controls connection and disconnection of electrical circuits |
| Safety Protection | Protection devices | Helps isolate abnormal electrical conditions |
Source: Product structure analysis based on medium voltage switchgear engineering principles and Jihui Electric product development experience.
During product development, we focus on the actual working environment of our customers. Electrical equipment may operate in factories, energy stations, buildings, transportation systems, and outdoor environments. Therefore, reliability, safety, and adaptability are the key factors we consider.
The epoxy insulation system is one of the important features of our switch cabinet. Epoxy materials provide stable insulation performance and good mechanical strength, helping the equipment maintain safe operation under different working conditions.
The flame retardant design improves safety performance by reducing risks caused by heat and electrical faults. This makes the product suitable for applications where fire protection requirements are important.
Medium voltage electrical systems require excellent insulation capability. Poor insulation may lead to electrical discharge, equipment damage, or unexpected downtime.
Our epoxy solid insulated switch cabinet uses carefully selected insulation materials and controlled manufacturing processes to improve insulation reliability. This helps customers build safer power distribution systems.
Many modern projects have limited installation space. A compact switch cabinet design can help customers improve space utilization while maintaining electrical performance.
Our enclosed structure protects internal components from external environmental influence and supports flexible installation in different project locations.

Customers in industries such as manufacturing, energy, and transportation often require continuous power supply. Equipment failure may cause production delays and additional costs.
Our Flame Retardant Epoxy Solid Insulated Enclosed Switch Cabinet is designed for stable long-term operation. The solid insulation structure reduces maintenance requirements and helps customers improve system availability.
Different projects have different electrical requirements. Some customers need specific voltage levels, installation layouts, or functional configurations.
Our engineering team can provide customized solutions according to customer drawings, technical specifications, and application conditions. We support both standard production and project-based customization.
When we design electrical equipment, we always consider real operating conditions. A switch cabinet may face temperature changes, humidity, electrical load variations, and long working hours. Therefore, every design choice must support stable performance.
Compared with traditional medium voltage switch cabinet solutions, our Flame Retardant Epoxy Solid Insulated Enclosed Switch Cabinet provides advantages in insulation safety, environmental adaptability, and maintenance efficiency.
| Comparison Item | Traditional Medium Voltage Cabinet | Epoxy Solid Insulated Switch Cabinet |
|---|---|---|
| Insulation Method | Traditional insulation structure | Epoxy solid insulation technology |
| Fire Safety Consideration | Depends on cabinet design and materials | Enhanced flame retardant material design |
| Environmental Adaptability | Requires suitable installation conditions | Better resistance to moisture and external influence |
| Maintenance Requirement | Regular inspection required | Reduced maintenance demand through solid insulation |
| Application Fields | General power distribution | Industrial, energy, infrastructure, and commercial applications |
Source: Technical comparison based on general medium voltage switchgear characteristics and our engineering evaluation.
Our Flame Retardant Epoxy Solid Insulated Enclosed Switch Cabinet is developed to support modern power distribution systems that require safety, reliability, and efficient operation.
From material selection to final inspection, we focus on every production detail. Our goal is to provide customers with electrical equipment that performs reliably after installation and continues supporting their power systems for years.
Through continuous improvement in design, manufacturing technology, and quality management, Jihui Electric Group continues to provide dependable medium voltage solutions for customers worldwide.
During our cooperation with customers from different industries, we have found that every power distribution project has its own challenges. Some projects require higher safety levels, some need compact equipment due to limited installation space, and others focus on long-term operating stability. Our Flame Retardant Epoxy Solid Insulated Enclosed Switch Cabinet is designed to meet these practical requirements.
With reliable insulation performance, flame retardant characteristics, and a compact enclosed structure, our medium voltage switch cabinet is suitable for a wide range of applications. It provides stable electrical control and protection for power systems in industrial, commercial, energy, and infrastructure fields.
| Industry | Typical Application | Product Value |
|---|---|---|
| Power Energy | Substations, distribution networks, power supply projects | Provides safe medium voltage control and protection |
| Renewable Energy | Solar power plants, wind energy projects, energy storage systems | Supports stable connection between energy sources and grids |
| Industrial Manufacturing | Factories, production lines, automated equipment systems | Helps maintain continuous and reliable power supply |
| Transportation Infrastructure | Rail transit, airports, ports, logistics centers | Supports safe operation of important electrical facilities |
| Commercial Buildings | Office buildings, shopping centers, large facilities | Provides compact and efficient power distribution solutions |
| Mining and Petrochemical | Mining areas, chemical plants, heavy industrial sites | Suitable for demanding operating environments |
Source: Application summary based on Jihui Electric product planning and medium voltage power distribution project experience.

At Jihui Electric Group, we believe that reliable electrical equipment starts with strict manufacturing control. A high-quality Flame Retardant Epoxy Solid Insulated Enclosed Switch Cabinet requires careful attention from design, material selection, assembly, testing, and final delivery.
Our manufacturing process combines professional engineering experience with standardized production management. Each production stage is controlled to ensure that the final equipment can meet customer expectations for safety, performance, and service life.
Before manufacturing 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 select suitable configurations and provide technical solutions. This process helps ensure that the switch cabinet is suitable for the customer's actual application instead of using a simple standard solution for every project.
Material quality directly affects the reliability of medium voltage equipment. We carefully select epoxy insulation materials, conductive components, metal structures, and protection devices according to product requirements.
The epoxy solid insulation material plays an important role in improving insulation performance, mechanical strength, and environmental resistance. The flame retardant characteristics also provide additional safety protection during operation.
During assembly, our production team follows standardized procedures to ensure accurate installation of every component. Electrical connections, mechanical structures, and protection systems are carefully checked.
A precise assembly process helps improve product consistency and reduces possible problems caused by manufacturing differences.
Before shipment, every Flame Retardant Epoxy Solid Insulated Enclosed Switch Cabinet completes inspection and testing procedures. We check electrical performance, mechanical operation, insulation condition, and overall product quality.
Through strict testing, we make sure that each product delivered to customers meets technical requirements and can operate safely after installation.
| Production Stage | Quality Control Focus | Purpose |
|---|---|---|
| Design Review | Technical parameters and project requirements | Ensure correct product configuration |
| Material Inspection | Insulation materials and electrical components | Improve product reliability |
| Assembly Control | Component installation accuracy | Maintain manufacturing consistency |
| Final Testing | Electrical and mechanical performance | Ensure safe operation before delivery |
Source: Jihui Electric Group internal manufacturing and quality control process information.
Choosing a medium voltage switchgear supplier is an important decision for any power project. Customers need more than a product catalog. They need a manufacturer who understands electrical applications, provides stable quality, and supports projects from beginning to end.
At Jihui Electric Group, we focus on providing complete medium and low voltage power distribution solutions. Our experience in electrical equipment manufacturing allows us to support customers with professional technical communication, reliable production, and efficient delivery.
We specialize in the research, development, manufacturing, sales, and service of power transmission and distribution equipment up to 35kV.
Our product range includes ring main units, Cable distribution boxes, Cable accessories, Prefabricated Substations, combination transformers, SF6 load switches, Vacuum circuit breakers, and solid insulated switchgear.
This product experience allows us to better understand different power system requirements and provide suitable solutions for various industries.

Quality management is an important part of our production philosophy. Our company has obtained ISO9001 quality management system certification, ISO14001 environmental management system certification, and ISO45001 occupational health and safety management system certification.
These certifications reflect our commitment to stable manufacturing processes, environmental responsibility, and safe production management.
Every project has different requirements. A factory power distribution system may focus on continuous operation, while a renewable energy project may require flexible integration with new energy equipment.
Our engineering team provides customized technical solutions based on customer drawings, project conditions, and application requirements. We support both standard products and customized production.
For overseas customers, we provide complete export support. We arrange production, inspection, packaging, and transportation according to project requirements.
The equipment is professionally packaged with moisture protection, shock protection, and collision protection methods to ensure safety during transportation.
| Service Category | Our Support |
|---|---|
| Technical Service | Product selection, technical communication, and project support |
| Manufacturing | Standard production and customized equipment solutions |
| Quality Inspection | Factory testing and delivery inspection |
| Packaging | Professional export protection packaging |
| Transportation | Sea, land, and combined logistics solutions |
Source: Jihui Electric Group production, service, and export capability information.
It is a medium voltage electrical cabinet that uses epoxy solid insulation technology to provide safe switching, power distribution, and circuit protection. It is designed for applications requiring reliable insulation performance and improved fire safety.
Our medium voltage power distribution equipment covers applications up to 35kV. Specific voltage levels and configurations can be customized according to customer project requirements.
Epoxy solid insulation provides good electrical insulation, mechanical strength, and environmental resistance. It helps improve equipment reliability and supports long-term stable operation.
It can be used in power distribution networks, renewable energy projects, industrial plants, commercial buildings, transportation systems, mining facilities, and petrochemical applications.
Yes. We provide customized medium voltage switchgear solutions according to electrical parameters, installation conditions, project requirements, and customer specifications.
We control quality through material inspection, standardized production, performance testing, and final inspection before delivery. Our management systems follow ISO9001, ISO14001, and ISO45001 requirements.
We support international trade payment methods such as T/T. Delivery methods can include sea transportation, land transportation, or combined transportation depending on product size, quantity, and destination.
As electrical systems continue to develop, customers need power equipment that combines safety, efficiency, and environmental responsibility. The Flame Retardant Epoxy Solid Insulated Enclosed Switch Cabinet is designed to support this direction by providing reliable medium voltage distribution performance with advanced insulation technology.
At Jihui Electric Group, we continue improving our products through engineering innovation, manufacturing experience, and strict quality control. We aim to provide customers with electrical solutions that are not only reliable today but also suitable for future power system development.
From industrial facilities and renewable energy projects to urban infrastructure and commercial applications, our goal is to help customers build safer and more efficient power networks.
With professional manufacturing capability, complete service support, and a commitment to quality, Jihui Electric Group is ready to work with global partners to create dependable medium voltage power distribution solutions.
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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