KYN28A-12 Armored Switch Type AC Metal-enclosed Switchgear (hereinafter referred to as switchgear) is suitable for indoor three-phase 50/60Hz, rated voltage 10kV Power Systems. It is mainly used in power plants, substations, industrial and mining enterprises, and high-rise buildings for the acceptance and distribution of electrical energy, as well as circuit control, protection, and monitoring.
KYN28A-12 Switchgear has various functions to prevent misoperation, including preventing the moving of the switch with load, preventing the grounding switch from closing when the circuit breaker is in the operating position, preventing live grounding switches, and preventing accidental contact with live compartments, etc.
The switchgear is equipped with VS1, VD4 series mid-mounted high-voltage AC vacuum circuit breakers, and solid-sealed Vacuum Circuit Breakers with excellent performance. The secondary circuit of the switchgear is equipped with advanced and reliable control and protection elements. The busbar uses heat-shrink insulation material or epoxy-coated insulation, optimizes the electrode shape, and features a compact cabinet structure.
The switchgear is a power distribution equipment with advanced technology, stable performance, a reasonable structure, convenient use, and safety and reliability.
Name Unit Data Rated Voltage kV 3.6、7.2、12 Rated Frequency HZ 630 1000 1250 2000 2500 3150 Rated Current of Circult Breaker A 20 31.5 40 Rated Voltage of Switchgear A 20 31.5 40 Rated short-time withstand current(4s) KA 50 80 10 Rated Peak Withstand Current(Peak Value) KA 50 80 100 Rated Short-circuit Breaking Current KA 4 Rated Short-circult Closing Current KA IP2X l min power frequency withstand voltage Rated insulation level KV Single bus, single bus with bypass, double bus Lightning impulse withstand voltage KV Electromagnetic, bullet ZE energy storage type Class of protection The enclosure is lP4X, the isolation room andthe circuit breaker room are lP2X when the door is open
The KYN28-12 Medium Voltage Metal Clad Armored Removable Switchgear is a high-performance indoor power distribution cabinet designed for industrial, commercial, and utility applications. Featuring metal-clad armored construction and removable modules, this switchgear ensures operator safety, ease of maintenance, and reliable medium voltage distribution.
This guide provides a comprehensive overview of product applications, user feedback, operating instructions, and component details, making it an essential resource for engineers, operators, and procurement professionals.
Overview of KYN28-12 Switchgear
Product Applications and Use Cases
User Feedback and Performance Insights
User Guide and Operational Instructions
Component List and Specifications
Installation Guidelines
Maintenance and Inspection
Troubleshooting Common Issues
Safety Considerations
Certifications and Compliance
Conclusion
The KYN28-12 switchgear is a metal-clad, armored, removable medium voltage distribution cabinet designed for safe and efficient indoor power management. Key features include:
Metal-Clad Armored Construction: Enhances safety and structural integrity.
Removable Modules: Facilitate maintenance and replacement without downtime.
Indoor Installation: Suitable for factories, substations, and industrial facilities.
Medium Voltage Operation: Supports 12 kV systems with high reliability.
User-Friendly Design: Simplified operation with clear indicators and interlocks.
Provides reliable electrical distribution for manufacturing plants.
Supports heavy machinery and automation systems.
Reduces downtime and maintenance costs through modular design.
Ensures stable medium voltage supply to large office complexes and commercial centers.
Facilitates energy management and safety compliance.
Functions as a core medium voltage distribution cabinet in urban substations.
Enables efficient ring main and feeder distribution systems.
Compatible with solar farms, wind farms, and hydroelectric plants.
Provides safe, modular distribution for variable power sources.
Users consistently report the following advantages:
High Reliability: Stable performance even under continuous operation.
Ease of Maintenance: Removable modules and accessible panels reduce downtime.
Safety Assurance: Metal-clad armored design minimizes risk of electrical hazards.
Space Efficiency: Compact indoor design fits into constrained environments.
Sample Testimonials:
| User | Feedback |
|---|---|
| Industrial Plant, Germany | “Reduced maintenance time and improved safety.” |
| Commercial Complex, UK | “Reliable distribution cabinet with excellent durability.” |
| Substation Operator, India | “The modular design allows quick replacements and inspections.” |
Verify power isolation and grounding.
Inspect circuit breakers, busbars, and insulation.
Confirm indicator lamps and interlocks are functional.
Use switches and circuit breakers according to operational procedures.
Observe status indicators for abnormal conditions.
Avoid simultaneous operations that may bypass interlocks.
In case of fault, disconnect power immediately.
Notify maintenance personnel and follow established safety protocols.
| Feature | Description |
|---|---|
| Control Switches | Enable or disable incoming/outgoing feeders |
| Status Indicators | Show normal, fault, or maintenance status |
| Emergency Trip Button | Instantly disconnects power during fault |
| Metering Instruments | Measure voltage, current, and load parameters |
| Interlock Mechanisms | Prevent unsafe simultaneous operations |
| Component | Function | Specification/Notes |
|---|---|---|
| Circuit Breakers | Interrupt overload/fault currents | 12 kV rated, 630–1250 A |
| Busbars | Conduct electricity between modules | Copper/Aluminum, insulated |
| Removable Modules | Facilitate maintenance | Metal-clad with interlocks |
| Control Wiring | Signal and control distribution | Flame-retardant cables |
| Indicators and Meters | Display operating conditions | LED lamps, analog/digital meters |
| Insulation Panels | Prevent electrical contact | High dielectric strength material |
| Cabinet Enclosure | Structural protection | Fully armored metal |
| Grounding System | Safety and protection | Proper earthing according to IEC |
Ensure stable and level foundation.
Maintain sufficient clearance for maintenance.
Verify ventilation and ambient temperature meet requirements.
Position and secure the switchgear on the foundation.
Connect incoming and outgoing feeders as per wiring diagram.
Ground the cabinet properly.
Perform mechanical operation tests before energizing.
Conduct initial insulation and continuity tests.
| Test Type | Requirement |
|---|---|
| Insulation Resistance | ≥100 MΩ |
| Contact Resistance | ≤10 μΩ |
| Mechanical Operation Test | Smooth for full cycle |
| Interlock Test | Proper function of safety interlocks |
| Functional Test | Load and no-load switching successful |
| Task | Frequency | Description |
|---|---|---|
| Visual Inspection | Monthly | Check for corrosion, dust, or mechanical defects |
| Mechanical Operation Test | Quarterly | Test switches and interlocks |
| Contact Resistance Measurement | Bi-Annually | Ensure low resistance in connections |
| Cleaning Panels | Bi-Annually | Remove dust, dirt, and debris |
| Component Replacement | As Needed | Replace worn or damaged parts |
Tighten all electrical connections.
Avoid exposure to moisture and dust.
Check for temperature fluctuations affecting insulation.
| Issue | Possible Cause | Recommended Action |
|---|---|---|
| Switch fails to operate | Mechanical obstruction | Inspect and lubricate mechanism |
| Abnormal voltage or current | Loose or corroded contacts | Tighten or replace connections |
| Indicator malfunction | Faulty control wiring | Check wiring, calibrate or replace panel |
| Noise during operation | Worn moving parts | Lubricate or replace components |
| Insulation degradation | Dust, moisture, or overheating | Clean, dry, or replace insulation |
Always disconnect power before maintenance.
Wear PPE, including insulated gloves and safety glasses.
Avoid contact with live parts.
Ensure proper grounding.
Follow IEC safety standards during operation.
IEC 62271 Series: medium voltage switchgear standards
ISO 9001: Quality management certification
CE Marking: Safety and environmental compliance
RoHS Directive: Restriction of hazardous substances
The KYN28-12 Medium Voltage Metal Clad Armored Removable Switchgear is a reliable, safe, and modular indoor power distribution solution. Its metal-clad armored construction and removable modules provide efficient operation, minimal downtime, and long-term reliability. Proper installation, adherence to safety protocols, and regular maintenance ensure safe and stable medium voltage distribution in industrial, commercial, and utility networks.
Phone: +8613736779975
E-mail: sales@vcbbreaker.com
Address: 66 Punan Road, Yueqing Economic Development Zone, Zhejiang, China
Copyright © 2025 Yangmei Electric Group All rights reserved
This website uses cookies to ensure you get the best experience on our website.
Español
Portugues
Pусский
العربية
Türk dili
Indonesia
Tiếng Việt
қазақ
فارسی
українська
беларускі
Filipino
o'zbek
български
тоҷикӣ
kiswahili
Монгол
አማራ
Ilocano
Phone