Product Introduction
The KYN28-12 Indoor Metal-Enclosed Withdrawable AC Switchgear is a reliable medium voltage power distribution solution designed for 3.6kV–12kV, 50Hz three-phase AC systems. It is widely used for electrical energy receiving, distribution, control, protection, and monitoring in power plants, substations, industrial facilities, commercial buildings, and utility distribution networks.
Featuring a metal-clad structure, withdrawable vacuum circuit breaker design, and modular compartment layout, the KYN28-12 switchgear provides excellent operational safety, convenient maintenance, and flexible configuration options.
The switchgear consists of independent compartments for busbars, circuit breakers, cables, and low-voltage control units, effectively improving insulation performance, arc protection, and operator safety.
With standardized design and proven performance, KYN28-12 is suitable for both new power distribution projects and upgrading existing substations, providing a safe, efficient, and cost-effective medium voltage switchgear solution.
Key Features
1. High Safety Metal-Clad Structure
- Fully enclosed metal housing with separated compartments for busbar, breaker, cable, and control units.
- Prevents accidental contact with energized components.
- Designed with internal arc protection to enhance operation safety.
2. Withdrawable Vacuum Circuit Breaker Design
- Equipped with a movable VCB truck for easy installation, replacement, and maintenance.
- Allows fast breaker inspection without disconnecting the main busbar system.
- Reduces downtime during maintenance.
3. Reliable Mechanical Interlocking System
- Integrated five-prevention interlocking system prevents incorrect operation.
- Avoids unsafe conditions such as closing the breaker in improper positions or opening energized compartments.
4. Flexible Modular Configuration
- Supports multiple functional units including:
- Incoming feeder panel
- Outgoing feeder panel
- PT panel
- Metering panel
- Bus coupler panel
- Suitable for different power distribution requirements.
5. Long Service Life & Low Maintenance
- High-quality electrical components ensure stable long-term operation.
- Designed for harsh industrial environments with dust, humidity, and temperature variations.
Technical Specifications
| Parameter |
Specification |
| Rated Voltage |
3.6kV / 7.2kV / 12kV |
| Rated Frequency |
50Hz |
| Rated Current |
Up to 4000A |
| Rated Short-Time Withstand Current |
Up to 40kA |
| Rated Peak Withstand Current |
Up to 100kA |
| Main Switching Device |
Vacuum Circuit Breaker |
| Installation Type |
Withdrawable |
| Protection Degree |
IP4X |
| Structure Type |
Metal-Clad Enclosed |
| Phase System |
Three-Phase AC |
| Application |
Indoor Distribution System |
Complete technical parameters are available in the product datasheet.
Applications
The KYN28-12 medium voltage switchgear is widely applied in:
- Power plants and substations
- Industrial factories and manufacturing facilities
- Mining and energy projects
- Commercial buildings and shopping centers
- Data centers and infrastructure projects
- Renewable energy power plants
- Utility distribution networks
- Prefabricated substations
FAQ
1. What is KYN28-12 switchgear used for?
KYN28-12 is an indoor medium voltage metal-enclosed switchgear used for power receiving, distribution, control, and protection in 3.6kV–12kV electrical systems.
2. What is the difference between KYN28-12 and fixed switchgear?
KYN28-12 uses a withdrawable vacuum circuit breaker design, allowing easier maintenance and faster replacement compared with fixed switchgear.
3. Is KYN28-12 suitable for industrial projects?
Yes. It is widely used in factories, industrial parks, mining facilities, and large power distribution systems requiring high reliability.
4. Can KYN28-12 be customized?
Yes. We provide OEM/ODM solutions including panel configuration, electrical components, dimensions, and project-specific requirements.
5. What standards does KYN28-12 comply with?
The product is manufactured according to relevant IEC and national standards and can meet international project requirements.
6. Do you provide technical support?
Yes. We provide technical documentation, installation support, and customized solutions for global customers.
