KYN61-40.5 Switchgear is equipped with the high-performance ZN85A and VD4 vacuum circuit breakers. The cabinet assembly structure improves the appearance quality and manufacturing accuracy. The busbar uses heat-shrink insulation material or epoxy coating insulation, with an optimized electrode shape and a compact cabinet structure. It also has a perfect “five defense” function (i.e., protection against electric shock, water, dust, etc.).
KYN61-40.5 Switchgear is used in a 40.5kV three-phase AC 50Hz power system for power plants, and the acceptance and distribution of electric energy in substations and distribution rooms of industrial and mining enterprises. It can control, protect, and monitor circuits. In addition to being widely used in general Power Systems, it can also be used in places with frequent operations. The environmental conditions for use are in accordance with GB 3906, “3.6-40.5kV AC Metal-enclosed Switchgear,” and the normal conditions of use.
Name Unit Data Rated Voltage kV 40.5 Rated Frequency Hz 50 Rated Current of Circuit Breaker A 1250, 1600, 2000, 2500 Rated Current of Switchgear A 1250, 1600, 2000, 2500 Rated Short-time Withstand Current (4s) kA 20，25, 31.5 Rated Peak Withstand Current (Peak Value) kA 50, 63，80 Rated Short-circuit Breaking Current kA 20, 25, 31.5 Rated Short-circuit Closing Current (Peak Value) kA 50, 63，80 Rated Insulation Level 1min Power Frequency Withstand Voltage Between poles, poles to the
groundkV 95 Between fractures kV 110 Lightning Impulse Withstand Voltage (Peak) Between poles, poles to the
groundkV 185 Between fractures kV 215 The protection class housing is 2P4X, and the compartment and circuit breaker room doors are lP2X when opened.
The KYN61-40.5 40.5kV High Voltage Power Distribution Switchboard Cabinet is a robust indoor metal-clad switchgear designed for high-voltage power distribution in industrial, commercial, and utility applications. With advanced modular design, high safety standards, and IEC compliance, it ensures efficient operation, long-term reliability, and ease of maintenance.
This comprehensive guide covers technical support, component overview, technical specifications, and product certifications, offering valuable insights for engineers, operators, and procurement professionals.
Overview of KYN61-40.5 Switchgear
Product Applications and Benefits
Technical Support and Services
Component List and Functional Description
Technical Specifications
Installation Guidelines
Maintenance and Inspection
Troubleshooting Common Issues
Safety Considerations
Certifications and Compliance
Conclusion
The KYN61-40.5 switchgear is a high voltage, indoor, metal-clad distribution cabinet. Its key characteristics include:
High Voltage Operation: Rated at 40.5 kV, suitable for medium and high voltage networks.
Metal-Clad Design: Provides mechanical protection, fire resistance, and safety.
Indoor Installation: Optimized for substations, industrial plants, and commercial facilities.
Modular Construction: Facilitates easy maintenance and component replacement.
IEC Standards Compliance: Ensures international safety and performance standards.
Distributes high voltage power to manufacturing equipment and automation systems.
Reduces downtime through modular and maintenance-friendly design.
Provides reliable indoor high-voltage distribution for offices, hospitals, and shopping centers.
Supports energy management and operational safety.
Serves as a core switchgear cabinet for ring main and feeder distribution networks.
Allows efficient fault isolation and switching operations.
Compatible with solar, wind, and hydroelectric installations.
Offers safe, compact, and flexible power distribution for variable energy sources.
Technical support is essential to maximize the performance and lifespan of KYN61-40.5 switchgear. Key offerings include:
Installation Assistance: Guidance for proper site preparation, grounding, and connections.
Commissioning Services: Functional testing and verification of electrical and mechanical components.
Maintenance Support: Scheduled inspections, lubrication, and replacement of components.
Spare Parts Supply: Ready availability of circuit breakers, busbars, meters, and control modules.
Remote Support: Technical guidance through digital platforms for troubleshooting and optimization.
Benefits of Professional Support:
| Support Type | Benefits |
|---|---|
| Installation Assistance | Ensures proper setup, reduces initial faults |
| Commissioning Services | Verifies electrical and mechanical performance |
| Maintenance Support | Prolongs lifespan, reduces downtime |
| Spare Parts Supply | Minimizes operational interruptions |
| Remote Technical Guidance | Rapid troubleshooting and system optimization |
The KYN61-40.5 switchgear is composed of several critical components that ensure safe and reliable operation.
| Component | Function | Specification/Notes |
|---|---|---|
| Circuit Breakers | Interrupt overload and fault currents | 40.5 kV rated, 630–2500 A |
| Busbars | Conduct electricity between modules | Copper or aluminum, insulated |
| Metal-Clad Enclosure | Mechanical and electrical protection | Fire-resistant steel panels |
| Control Modules | Signal distribution and monitoring | PLC or relay-based systems |
| Indicators and Meters | Display voltage, current, and load status | LED/analog/digital |
| Insulation Barriers | Prevent electrical contact | High-dielectric material |
| Grounding System | Ensure safety and protection | IEC compliant earthing |
| Removable Modules | Facilitate maintenance and replacement | Interlocked, guided withdrawal mechanism |
The KYN61-40.5 switchgear meets high operational standards, ensuring performance and safety.
| Specification | Parameter |
|---|---|
| Rated Voltage | 40.5 kV |
| Rated Current | 630–2500 A |
| Short-Circuit Breaking Capacity | 20–40 kA |
| Insulation Level | AC 50 Hz / 42 kV withstand voltage |
| Power Frequency Withstand | 95 kV for 1 min |
| Lightning Impulse Withstand | 185 kV |
| Operating Mechanism | Spring or motor-operated circuit breaker |
| Ambient Temperature | -10°C to +40°C |
| Relative Humidity | ≤95% |
| Protection Grade | IP4X / IP30 (depending on panel type) |
Ensure stable, level foundation and proper ventilation.
Maintain clearance for maintenance and operation.
Verify ambient temperature, humidity, and indoor environment meet IEC specifications.
Place and secure switchgear cabinet on prepared foundation.
Connect incoming and outgoing feeders according to wiring diagrams.
Install grounding system per IEC standards.
Verify mechanical operation of modules and interlocks.
Conduct insulation and continuity tests before energization.
Routine maintenance ensures reliable operation and prolonged lifespan.
| Task | Frequency | Description |
|---|---|---|
| Visual Inspection | Monthly | Check for dust, corrosion, or damage |
| Mechanical Operation Test | Quarterly | Test breakers and interlocks |
| Contact Resistance Measurement | Bi-Annually | Ensure proper electrical conductivity |
| Cleaning Enclosure Panels | Bi-Annually | Remove dirt and contaminants |
| Component Replacement | As Needed | Replace worn or damaged parts |
Preventive Measures:
Tighten all electrical connections.
Monitor insulation condition and temperature.
Avoid exposure to moisture and dust.
| Issue | Possible Cause | Recommended Action |
|---|---|---|
| Circuit breaker fails to operate | Mechanical obstruction | Inspect and lubricate mechanism |
| Abnormal voltage or current | Loose connections | Tighten or replace connections |
| Indicator malfunction | Faulty control wiring | Inspect, recalibrate, or replace panel |
| Noise during operation | Worn moving parts | Lubricate or replace components |
| Insulation degradation | Moisture or dust | Clean or replace insulation |
Disconnect power before inspection or maintenance.
Wear PPE including insulated gloves and protective clothing.
Verify grounding system integrity.
Observe interlocks and safety mechanisms.
Follow IEC 62271 and related standards during operation.
The KYN61-40.5 switchgear complies with multiple international standards:
IEC 62271 Series: high voltage switchgear standard.
ISO 9001: Quality management certification.
CE Marking: Safety and environmental compliance.
RoHS Directive: Restriction of hazardous substances.
Optional national certifications depending on market requirements.
The KYN61-40.5 40.5kV High Voltage Power Distribution Switchboard Cabinet Metal Clad Switchgear Indoor is a robust, reliable, and IEC-compliant solution for indoor high voltage distribution. Its metal-clad construction, modular components, and extensive technical support ensure efficient operation, safety, and long-term reliability for industrial, commercial, and utility applications.
Proper installation, maintenance, and adherence to safety protocols guarantee optimized performance and a long service life, making it a preferred choice for medium and high voltage power distribution networks.
Phone: +8613736779975
E-mail: sales@vcbbreaker.com
Address: 66 Punan Road, Yueqing Economic Development Zone, Zhejiang, China
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