I. Overview:
KYN28A-24 armored movable AC metal enclosed switchgear (hereinafter referred to as switchgear) is suitable for indoor three-phase 50/60Hz, rated voltage 24kV power systems. It is mainly used in power plants, substations, industrial and mining enterprises, and high-rise buildings to receive and distribute electrical energy, and to control, protect, and monitor circuits. The KYN28A-24 switchgear has various functions to prevent misoperation, including preventing the movement of the handcart under load, preventing the closing position of the grounding switch on the circuit breaker, preventing the live closing of the grounding switch, and preventing accidental entry into the live compartment. VS1 and VN2 series mid mounted high-voltage AC Vacuum circuit breakers and solid sealed vacuum switches with excellent performance in switchgear configuration. The secondary circuit of the switchgear is equipped with advanced and reliable control and protection components; The bus adopts heat shrinkable insulation material or epoxy coating insulation means to optimize the electrode shape. The cabinet is compact in structure. The switchgear is a power distribution equipment with advanced technology, stable performance, reasonable structure, convenient use, safety and reliability

II. Normal usage conditions
--Environmental conditions: maximum temperature:+40 ° C, minimum temperature: -15 ° C, and the average value measured within 24 hours does not exceed 35 ° C; exceeding 1.8kPa;
--The temperature conditions are as follows: the average daily relative humidity does not exceed 95%; The average monthly relative humidity should not exceed 90%; The average daily water vapor pressure shall not exceed 2.2kPa; The average value of monthly water vapor pressure is not
--Altitude not exceeding 1000m;
--The surrounding air has not been significantly polluted by dust, smoke, corrosive or flammable gases, steam, or salt spray;
--Vibration or ground motion from outside the switchgear and control equipment can be ignored;
--The amplitude of electromagnetic interference induced in the secondary system shall not exceed 1.6kV.
| Model | Size |
| KYN28-24 | 100*181*238cm |




KYN28A-24 Armored removable AC metal enclosed switchgear for Reliable Medium Voltage Power Distribution
At Jihui Electric Group Co., Ltd., we focus on developing and manufacturing reliable medium and Low voltage power distribution equipment for global customers. With years of experience in the electrical industry, we provide solutions for power grids, industrial facilities, renewable energy projects, infrastructure construction, and commercial applications.
Our KYN28A-24 Armored removable AC metal enclosed switchgear is one of our important medium voltage power distribution products. Designed for 24kV electrical systems, this withdrawable metal clad switchgear combines safety protection, convenient maintenance, and stable operating performance. It is widely used in substations, industrial plants, power generation facilities, and large-scale energy projects where reliable electricity distribution is required.
We understand that every power system has different requirements. Equipment safety, service life, maintenance efficiency, and operation stability directly influence the performance of the entire electrical network. Therefore, we manufacture KYN28A-24 switchgear with strict quality control, advanced production technology, and careful testing before delivery.

KYN28A-24 Armored removable AC metal enclosed switchgear is a type of indoor medium voltage switchgear designed for controlling, protecting, and distributing electrical power in AC systems up to 24kV. It belongs to the category of metal clad switchgear, where the main electrical components are separated by metal compartments to improve operational safety.
Unlike traditional fixed switchgear, the KYN28A-24 adopts a withdrawable design. The circuit breaker unit can be moved in and out of the cabinet, which makes inspection, replacement, and maintenance work easier. This structure helps reduce downtime and improves the efficiency of electrical system management.
The switchgear is normally equipped with Vacuum circuit breakers, current transformers, voltage transformers, protection devices, and control systems. These components work together to provide safe switching, fault protection, and stable power distribution.
Our KYN28A-24 Armored removable AC metal enclosed switchgear is suitable for applications requiring high reliability, compact installation, and flexible operation. It is especially suitable for industrial power distribution systems, urban power networks, renewable energy facilities, and infrastructure projects.
The working principle of KYN28A-24 switchgear is based on controlling and protecting medium voltage electrical circuits. When electrical power enters the switchgear, it passes through the incoming cable section and reaches the main switching equipment.
The vacuum circuit breaker inside the cabinet is responsible for connecting or disconnecting the electrical circuit. Under normal conditions, it allows current to flow smoothly. When abnormal situations such as short circuits or overloads occur, the protection system detects the problem and sends a signal to open the circuit breaker, stopping the current flow and protecting downstream equipment.
The metal enclosure provides mechanical protection and helps prevent accidental contact with live parts. The internal compartments separate different electrical sections, including the busbar room, circuit breaker room, cable room, and control room.
This compartment structure improves safety during operation and maintenance. Operators can perform inspection work more safely because important electrical components are properly isolated.
The withdrawable design is another important advantage. When maintenance is required, technicians can move the breaker trolley to the test position or remove it completely without affecting the entire switchgear system. This improves maintenance flexibility and reduces service time.
Safety is always our first consideration. The KYN28A-24 switchgear uses a strong metal enclosure with separated compartments to provide reliable protection for operators and electrical components.
The armored structure improves mechanical strength and helps the equipment withstand demanding industrial environments. It also reduces the risk caused by accidental operation or external impact.
One of the key advantages of our 24kV medium voltage switchgear is the removable circuit breaker system. The breaker trolley can move between working, testing, and isolated positions.
This design makes daily operation more convenient. When maintenance or replacement is needed, technicians do not need to dismantle the entire cabinet, which saves time and improves system availability.
Our KYN28A-24 armored switchgear is designed for stable electrical performance. The equipment provides reliable insulation, strong mechanical strength, and effective fault protection.
Every unit undergoes factory inspection and performance testing before shipment. We check electrical connections, insulation performance, mechanical operation, and protection functions to ensure the equipment meets customer requirements.

Different projects have different electrical requirements. We can provide customized solutions according to voltage level, installation environment, protection requirements, and system design.
The KYN28A-24 switchgear can be configured with different protection devices, measurement components, communication functions, and control systems according to project needs.
With increasing demand for stable electricity supply, modern power systems require equipment that combines safety, efficiency, and easy maintenance. Our KYN28A-24 Armored removable AC metal enclosed switchgear is developed to meet these requirements.
It supports applications in traditional power distribution systems as well as new energy projects such as solar power plants, wind power facilities, and energy storage systems.
During product development, we focus on solving practical problems faced by customers. A good switchgear system should not only provide electrical protection but also support long-term operation and convenient maintenance.
Our KYN28A-24 medium voltage switchgear provides several advantages:
High safety level: Metal compartment design reduces risks during operation and maintenance.
Easy maintenance: Withdrawable components simplify inspection and replacement.
Stable operation: Reliable insulation and mechanical design support continuous service.
Space saving: Compact cabinet structure helps optimize installation space.
Project adaptability: Flexible configuration supports different electrical applications.
Long service life: High-quality materials and strict manufacturing processes improve durability.
In a power distribution system, switchgear is not only a cabinet for electrical components. It is an important protection point that influences the safety and stability of the whole network.
Poor-quality switchgear may cause problems such as insulation failure, overheating, unexpected shutdown, or difficult maintenance. For industrial users, these problems can lead to production losses and increased operating costs.
For this reason, we pay attention to every manufacturing step, from material selection and component assembly to final testing. Our goal is to provide customers with dependable KYN28A-24 Armored removable AC metal enclosed switchgear that can operate safely for years.
At Jihui Electric, we design our power distribution equipment based on real project requirements. Different industries have different demands for electricity reliability, safety protection, and maintenance efficiency. Our KYN28A-24 Armored removable AC metal enclosed switchgear provides a practical solution for various medium voltage power distribution applications.
Power companies need stable and safe equipment to ensure continuous electricity supply. Our 24kV medium voltage switchgear is widely used in substations and distribution networks to control power flow, protect electrical equipment, and improve grid reliability.
The armored metal enclosed structure provides additional safety for operators, while the withdrawable design makes inspection and maintenance easier. This helps utility companies reduce maintenance time and improve power system availability.
Renewable energy development requires reliable medium voltage equipment to connect generated electricity to the grid. Solar farms, wind power plants, and energy storage projects often require switchgear that can operate safely under changing power conditions.
Our KYN28A-24 withdrawable metal clad switchgear can be integrated into renewable energy distribution systems to provide circuit control, protection, and power management. It supports the growing demand for clean energy infrastructure.

Factories depend on stable electricity for continuous production. Unexpected power interruptions may affect production schedules and increase operating costs. Therefore, industrial users need reliable indoor metal enclosed switchgear with strong protection performance.
The KYN28A-24 switchgear is suitable for industries such as automotive manufacturing, machinery production, metallurgy, chemical processing, and electronics manufacturing. It helps provide safe power distribution for production lines and industrial equipment.
Large commercial facilities such as shopping centers, office buildings, transportation hubs, and public facilities require dependable power systems. Our medium voltage switchgear provides safe electrical distribution for these complex applications.
The compact structure and flexible configuration allow easier installation in different building environments while maintaining reliable electrical performance.
Mining and petrochemical industries often operate in demanding environments where equipment reliability is extremely important. Stable power distribution is necessary for pumps, motors, processing equipment, and control systems.
Our KYN28A-24 armored switchgear is designed with strong mechanical protection and reliable insulation performance, making it suitable for industrial environments that require continuous operation.
We believe that product quality comes from every manufacturing detail. At Jihui Electric, our production process combines advanced equipment, experienced technicians, and strict inspection procedures.
Before production begins, our engineering team reviews customer requirements, including voltage level, current rating, installation conditions, protection requirements, and project standards.
We provide customized technical solutions according to different applications. This ensures that the final switchgear matches the customer's electrical system.
The cabinet structure of KYN28A-24 switchgear requires strong mechanical performance and long-term durability. We carefully select suitable steel materials and electrical components to ensure stable operation.
Important components such as vacuum circuit breakers, insulation parts, and control devices are selected according to technical standards and customer requirements.
The cabinet manufacturing process includes cutting, bending, welding, surface treatment, and assembly. Precise manufacturing helps ensure proper installation of electrical components and reliable mechanical operation.
Each cabinet frame is inspected for dimensional accuracy before entering the next production stage.
During assembly, our technicians install busbars, circuit breakers, protection devices, control systems, and internal wiring according to engineering drawings.
After assembly, every unit undergoes electrical testing, including insulation testing, circuit inspection, mechanical operation testing, and functional verification.
Before shipment, our quality team performs final inspections to confirm that the equipment meets technical requirements. We also use professional export packaging with moisture protection, shock resistance, and secure fixing methods.
Based on common industry application experience, withdrawable metal clad switchgear provides additional flexibility compared with traditional fixed structures.
| Item | KYN28A-24 Withdrawable Switchgear | Traditional Fixed Switchgear |
|---|---|---|
| Maintenance Method | Breaker trolley can be removed for inspection and replacement | More components require internal maintenance |
| Operation Flexibility | Supports working, testing, and isolated positions | Limited operation positions |
| Safety Protection | Metal compartment separation improves operator safety | Protection depends on cabinet structure |
| Application Range | Suitable for industrial, utility, and infrastructure projects | Mainly used for basic distribution applications |
Source: Technical comparison based on IEC 62271-200 medium voltage switchgear design principles and common engineering practices.

As a professional manufacturer of medium and low voltage power distribution equipment, we always focus on quality management and production control.
Our company has obtained:
ISO9001 Quality Management System Certification
ISO14001 Environmental Management System Certification
ISO45001 Occupational Health and Safety Management System Certification
These certifications reflect our commitment to reliable manufacturing, environmental responsibility, and safe production management.
Choosing a switchgear supplier means choosing a long-term partner for your power system. At Jihui Electric, we do not only provide equipment. We provide complete support from technical communication to after-sales service.
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, transformers, SF6 load switches, and vacuum circuit breakers.
Every project has different requirements. We can adjust product specifications according to customer voltage levels, installation environment, protection requirements, and application conditions.
From raw material inspection to final testing, we follow strict procedures to ensure every KYN28A-24 Armored removable AC metal enclosed switchgear unit meets customer expectations.
We support global customers with professional export services. Depending on destination and project requirements, products can be transported by sea, land, or combined transportation methods.
The KYN28A-24 Armored removable AC metal enclosed switchgear is designed for medium voltage applications up to 24kV. It is suitable for AC power distribution systems requiring reliable switching and protection.
Yes. This product is mainly designed as indoor metal enclosed switchgear for substations, industrial facilities, and power distribution rooms.
The withdrawable design allows the circuit breaker unit to move between operating, testing, and isolated positions. This makes maintenance faster and improves operation flexibility.
Yes. We can provide customized solutions according to project voltage requirements, system configuration, installation conditions, and customer technical specifications.
Before shipment, every switchgear unit undergoes factory inspection, including electrical performance testing, mechanical operation testing, and appearance inspection. We ensure the equipment meets technical requirements before delivery.
With the increasing demand for safe and efficient electricity distribution, reliable switchgear plays an important role in modern power systems. Our KYN28A-24 Armored removable AC metal enclosed switchgear combines safety, flexibility, and stable performance to support various industrial and infrastructure applications.
At Jihui Electric, we continue improving our manufacturing technology and service capability to provide customers with dependable medium voltage power distribution solutions. From standard products to customized projects, we work closely with customers to deliver equipment that meets real application needs.
If you are looking for a reliable supplier of 24kV medium voltage switchgear, withdrawable metal clad switchgear, or indoor metal enclosed switchgear, we are ready to provide professional technical support and complete solutions for your project.
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