I. Overview
KYN28A-12 (Z) armored withdrawable AC metal enclosed switchgear (hereinafter referred to as "switchgear") is suitable for three-phase AC 50Hz power systems, used for receiving and distributing electrical energy and controlling, protecting, and monitoring circuits. This product complies with the standards: GB3906 "3-35kV AC Metal Enclosed Switchgear", GB/T11022 "Common Technical Requirements for High Voltage Switchgear and Control Equipment", IEC60298 "AC Metal Enclosed Switchgear and Control Equipment with Rated Voltage of 1kV and Above".
II. Terms of Use
1. Surrounding air temperature: maximum temperature+40 ℃, minimum temperature -15 ℃;
2. Relative humidity: Daily average relative humidity: ≤ 95%, daily average water vapor pressure not exceeding 2.2KPa; monthly average
Relative humidity ≤ 90%; The monthly average water vapor pressure shall not exceed 1.8KPa;
3. Altitude: ≤ 1000m;
4. Earthquake intensity: not exceeding magnitude 8;
5. The surrounding air should not be significantly polluted by corrosive or flammable gases, water vapor, etc;
6. Places without severe vibration;
7. When used beyond the normal conditions specified in GB3906, the user and our company shall negotiate.
III. Structural characteristics
1. All metal modular assembly structure, the cabinet is made of imported aluminum zinc coated plate with strong anti-corrosion ability, without surface treatment. It is processed by CNC high-precision equipment and adopts advanced multiple folding technology. The connection is made with rivet nuts and high-strength bolts, with high precision, light weight, and good strength.
2. The switchgear can be equipped with Vacuum circuit breakers such as VS1 series, VD4 series, ZN65 series, etc., with wide adaptability and strong interchangeability. The handcart is equipped with a working position, a testing position, and positioning and display devices at each position, ensuring safety and reliability.
3. The cable room can accommodate up to 9 single core cables, and the equipment has reliable mechanical and electrical interlocking devices, fully meeting the "five prevention" requirements. Each room is equipped with a pressure relief channel to ensure personal safety during operation.
| Model | Size |
| KYN28-12 | 100*170*230cm |
At Jihui Electric Group Co., Ltd., we have been focusing on the research, development, manufacturing, and service of medium and low voltage power transmission and distribution equipment for many years. Our products are widely used in power grids, renewable energy projects, industrial factories, transportation systems, commercial buildings, and infrastructure projects.
Among our medium voltage product solutions, the KYN28A-12 12kV 2500A Armored Removable MV Switchgear is designed for customers who need safe, stable, and flexible electrical distribution equipment. This indoor high voltage distribution cabinet combines armored structure, removable design, and anti-arc protection technology to provide reliable operation in demanding power environments.
We understand that power distribution equipment is not just a cabinet installed in a room. It is an important part of the entire electrical system. A reliable switchgear solution must protect equipment, support stable electricity supply, reduce maintenance difficulties, and provide safe operation for engineers and operators.
Based on these requirements, we developed KYN28A-12 MV Switchgear with a focus on safety, durability, and practical application. With a rated voltage of 12kV and rated current up to 2500A, this armored removable medium voltage switchgear is suitable for various indoor power distribution systems.
The KYN28A-12 12kV 2500A Armored Removable MV Switchgear adopts a metal-clad structure with separated compartments, including the circuit breaker compartment, busbar compartment, cable compartment, and control compartment. This design helps improve safety and makes inspection and maintenance more convenient.
For projects requiring higher safety levels, our anti-arc design indoor high voltage distribution cabinet provides additional protection against internal arc faults. This feature helps reduce the impact of abnormal electrical conditions and improves the safety of the overall power system.
As a professional manufacturer located in Yueqing Economic Development Zone, China, Jihui Electric Group provides customized medium voltage power distribution solutions according to different project requirements. We support standard production as well as customized engineering services for global customers.
When we communicate with customers from different industries, we often hear similar concerns: How can we reduce electrical risks? How can we maintain equipment more easily? How can we ensure stable power supply for long-term operation?
These questions are common among power companies, engineering contractors, industrial users, and renewable energy project developers. Traditional electrical equipment may not always meet the requirements of modern power systems, especially when projects require higher capacity, better safety protection, and easier maintenance.
Our KYN28A-12 12kV MV Switchgear was developed to solve these practical problems. The removable structure allows operators to check and replace functional units more efficiently. The armored metal enclosure improves mechanical protection. The anti-arc design provides an extra safety layer during abnormal operating conditions.
We believe good electrical equipment should make customers feel confident during daily operation. That means stable performance, clear structure, convenient maintenance, and reliable protection.
The product is especially suitable for applications where continuous operation is important, such as factories, power substations, industrial parks, mining facilities, and renewable energy plants.
The basic function of KYN28A-12 Armored Removable MV Switchgear is to receive, control, protect, and distribute electrical power safely. It works as a key connection point between the incoming power source and outgoing electrical loads.
When electricity enters the switchgear, it passes through the incoming circuit section and is controlled by the internal Vacuum circuit breaker. According to system requirements, the circuit breaker can connect or disconnect the electrical circuit safely.
The internal busbar system transfers electrical energy between different functional units. Protection devices monitor system conditions and respond when abnormal situations occur, such as short circuits or overload conditions.
The removable circuit breaker design allows the breaker unit to move between working position and testing position. During maintenance, operators can perform inspections more safely without completely dismantling the cabinet structure.
The anti-arc design plays an important role in improving safety. If an internal arc fault occurs due to insulation failure or equipment problems, the structure helps control the impact and protect nearby components and personnel.
The complete working process includes:
Power receiving through incoming feeder unit
Electrical control through vacuum circuit breaker
Power distribution through busbar system
Protection through relay and safety devices
Measurement and monitoring through optional components
One of the key features of our KYN28A-12 switchgear is the armored metal-clad structure. Different functional sections are separated inside the cabinet, improving electrical safety and reducing the possibility of interference between components.
The metal enclosure provides strong mechanical protection and helps the equipment maintain stable performance during long-term operation.
Maintenance efficiency directly affects project operating costs. The removable design allows the circuit breaker unit to be easily moved, inspected, and replaced when necessary.
Compared with fixed equipment structures, removable MV switchgear provides more flexibility for maintenance teams and reduces downtime during equipment service.
Electrical safety is always one of our main design priorities. Internal arc faults can create high temperature and pressure, which may damage equipment and create safety risks.
Our anti-arc design indoor high voltage distribution cabinet focuses on improving protection performance during abnormal conditions. The structure helps manage internal arc effects and supports safer operation.
The KYN28A-12 2500A MV Switchgear is designed for applications requiring higher power transmission capacity. The 2500A current rating makes it suitable for industrial facilities, substations, and large electrical distribution systems.
By supporting higher current requirements, the equipment provides customers with more options when designing medium voltage power systems.
Different projects have different electrical requirements. We provide flexible configurations based on customer needs, including:
Incoming and outgoing feeder panels
Transformer protection panels
Bus sectional panels
PT panels
Metering panels
Customized protection solutions
During product development, we focus on several important factors: safety, reliability, maintenance convenience, and long service life. These advantages help customers reduce operation risks and improve power system efficiency.
| Technical Item | KYN28A-12 Performance | Customer Value |
|---|---|---|
| Rated Voltage | 12kV | Suitable for medium voltage power distribution systems |
| Rated Current | Up to 2500A | Supports high-load electrical applications |
| Cabinet Structure | Armored metal-clad design | Improves mechanical and electrical protection |
| Operation Method | Removable circuit breaker design | Easy inspection and maintenance |
| Safety Feature | Anti-arc protection design | Enhances operator safety |
Source: Technical information is based on Jihui Electric Group product design standards and medium voltage switchgear engineering requirements.
| Parameter | Specification |
|---|---|
| Product Name | KYN28A-12 Armored Removable MV Switchgear |
| Rated Voltage | 12kV |
| Rated Current | 2500A Maximum |
| Installation | Indoor High Voltage Distribution Cabinet |
| Main Structure | Metal-Clad Armored Type |
| Main Function | Power Distribution, Control, Protection |
| Protection Design | Anti-Arc Safety Structure |
| Application | Power Grid, Industry, Energy, Infrastructure Projects |
Source: Product specifications are prepared according to Jihui Electric Group manufacturing standards and customer project application requirements.
During our cooperation with customers from different countries and industries, we have learned that every electrical project has its own challenges. Some projects need higher safety protection, some require stable operation for 24 hours, and others need equipment that can adapt to future expansion.
Our KYN28A-12 12kV Armored Removable MV Switchgear is designed to meet these practical needs. With reliable switching performance, anti-arc protection, and flexible configuration, it provides a dependable solution for various medium voltage power distribution applications.
Power grid systems require equipment that can operate safely for many years. Any failure in medium voltage distribution equipment may affect industrial production, commercial activities, and public services.
The KYN28A-12 Indoor High Voltage Distribution Cabinet is widely used in substations and distribution stations because it combines protection, control, and power distribution functions in one integrated solution.
For utility companies and engineering contractors, our armored removable MV switchgear provides reliable operation, convenient maintenance, and flexible project configuration.
The growth of renewable energy has created new requirements for electrical distribution systems. Solar power plants and wind energy projects need stable medium voltage equipment to connect generated electricity with the grid.
Our KYN28A-12 12kV MV Switchgear can be applied in renewable energy collection systems, helping improve electrical safety and system stability.
With customized panel options, customers can select suitable configurations according to project capacity, protection requirements, and installation conditions.
Manufacturing plants usually depend on continuous power supply for automated production lines, motors, control systems, and processing equipment.
A sudden power interruption can cause production delays and additional costs. Therefore, factories need medium voltage switchgear with reliable protection and easy maintenance.
Our KYN28A-12 2500A MV Switchgear is suitable for industries including automotive manufacturing, machinery production, metal processing, chemical production, and industrial parks.
Mining and petrochemical projects often operate in complex environments where electrical safety is extremely important.
The armored structure and anti-arc design of our indoor high voltage distribution cabinet provide additional protection for these demanding applications.
The equipment helps maintain stable power supply for heavy-duty machinery, production systems, and industrial facilities.
Railways, airports, ports, and urban infrastructure require reliable electrical networks to support daily operation.
KYN28A-12 switchgear provides a practical solution for these projects by offering stable switching performance, strong protection capability, and convenient maintenance.
| Application Area | Main Requirements | KYN28A-12 Solution |
|---|---|---|
| Power Grid | Stable operation and safety protection | Reliable switching and protection functions |
| Renewable Energy | Flexible system integration | Customizable medium voltage configuration |
| Industrial Plants | Continuous power supply | 2500A high current capability |
| Infrastructure | Long service life and safety | Armored anti-arc cabinet structure |
Source: Application information is based on Jihui Electric Group project experience and common medium voltage distribution engineering applications.
At Jihui Electric Group, we believe reliable products are created through careful manufacturing processes. A medium voltage switchgear cabinet is not only a metal enclosure; it is a complete electrical protection system that requires accurate design, precise assembly, and strict testing.
Before production, our engineering team confirms all technical details with customers. We review voltage level, current requirements, installation environment, protection functions, and project standards.
For customized KYN28A-12 Armored Removable MV Switchgear, we prepare technical drawings and production plans based on customer requirements.
The cabinet frame is produced with strict dimensional control to ensure mechanical strength and accurate installation of electrical components.
The armored structure requires precise processing because each compartment must maintain proper separation and protection performance.
During assembly, our technicians install vacuum circuit breakers, busbar systems, protection devices, control components, and other electrical parts according to approved drawings.
Every connection point is checked carefully because electrical reliability depends on many small details.
The cabinet surface undergoes professional treatment to improve corrosion resistance and appearance quality. This helps the equipment maintain stable performance during long-term operation.
Before shipment, every switchgear unit receives complete inspection and testing. Our testing process includes:
Mechanical operation testing
Electrical connection inspection
Insulation performance checking
Protection function verification
Appearance and packaging inspection
Only after completing all required inspections can the equipment be delivered to customers.
Jihui Electric Group specializes in medium and low voltage power transmission and distribution equipment up to 35kV. Our product portfolio covers Cable accessories, Cable distribution boxes, ring main units, Prefabricated Substations, combination transformers, SF6 load switches, and vacuum circuit breakers.
With professional manufacturing capability and engineering experience, we provide complete electrical solutions for global customers.
Quality consistency is important for electrical equipment. We operate according to international management standards including ISO9001 quality management, ISO14001 environmental management, and ISO45001 occupational health and safety management systems.
From raw material inspection to final product testing, we control each production step to ensure reliable product quality.
Different customers have different requirements. Some need standard switchgear solutions, while others require special configurations.
Our team provides customized support based on project conditions, including cabinet arrangement, functional units, protection requirements, and technical specifications.
We support overseas customers with complete export services, including technical communication, production arrangement, quality inspection, packaging, and transportation support.
According to product size, quantity, and destination, we arrange suitable transportation methods including sea shipping, land transportation, or combined logistics.
| Item | Standard KYN28A-12 | Customized KYN28A-12 |
|---|---|---|
| Configuration | Standard switchgear layout | Project-based customized design |
| Current Requirement | Standard current range | Up to 2500A customized application |
| Protection Function | Basic protection | Additional protection solutions available |
| Panel Selection | Standard functional units | Customized feeder, PT, and control panels |
| Application | General distribution projects | Specific industrial and power grid projects |
Source: Comparison data is based on Jihui Electric Group product configuration experience and customer project requirements.
It is an indoor medium voltage switchgear system designed for 12kV power distribution applications. It provides electrical control, protection, isolation, and distribution functions with armored structure and removable design.
Anti-arc design helps improve safety during abnormal electrical conditions. It reduces the impact of internal arc faults and provides better protection for equipment and operators.
The removable design makes inspection, maintenance, and replacement easier. It helps reduce downtime and improves operation efficiency.
Yes. We provide customized solutions according to customer requirements, including cabinet structure, electrical configuration, protection functions, and project standards.
It is commonly used in power grids, renewable energy projects, industrial factories, mining, petrochemical plants, rail transit, commercial buildings, and infrastructure projects.
We follow strict quality control procedures and complete factory testing before delivery. Our ISO9001, ISO14001, and ISO45001 management systems support consistent production quality.
Choosing the right medium voltage switchgear supplier is an important decision for any electrical project. At Jihui Electric Group, we focus on providing safe, reliable, and practical power distribution solutions for customers worldwide.
Our KYN28A-12 12kV 2500A Armored Removable MV Switchgear with Anti-Arc Design Indoor High Voltage Distribution Cabinet combines strong protection, convenient maintenance, and flexible configuration to meet modern electrical system requirements.
Whether you are planning a power grid project, industrial facility, renewable energy system, or infrastructure project, our engineering team can provide suitable technical solutions based on your needs.
Contact Jihui Electric Group today and let us help you build a safer and more reliable medium voltage power distribution system.
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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