Product Overview
The KYN550-12 compact metal-clad switchgear series is a new-generation, modular electrical switchgear designed for 12kV, 3-phase AC 50Hz systems with single busbar or single busbar sectionalized configurations. It is ideal for industrial and residential cable ring networks and terminal distribution projects, particularly for power reception and distribution in urban residential areas, secondary substations, switching stations, cable branch boxes, compact substations, industrial and mining enterprises, commercial centers, airports, metro systems, wind power plants, hospitals, stadiums, railways, and tunnels.
This product features a simple structure, flexible operation, reliable interlocking, and convenient installation. It offers customized technical solutions for a wide range of applications and users. With integrated sensing, automation, and digital technologies, the system delivers advanced performance and adaptable configurations to meet the evolving demands of intelligent power grids.
The KYN550-12 air-insulated switchgear complies with national, industrial, and international standards. Its spring-operated mechanism ensures safe and reliable operation, with a mechanical life exceeding 10,000 cycles.
Technical Specifications
Rated Voltage: 12kV
Rated Power Frequency Withstand Voltage (1 min): 42kV
Rated Lightning Impulse Withstand Voltage: 75kV
Rated Frequency: 50Hz
Rated Short-Time Withstand Current (4s): 20kA / 25kA / 31.5kA
Rated Current of Main Busbar: 4000A
Rated Current of Branch Busbar: 630A / 1250A / 1600A
Cabinet Dimensions (W×D×H): 550mm × 1150mm × 2200mm
Protection Class: IP4X (IP2X with breaker compartment door open)
Weight: 200–350kg (including switchgear)
Ambient Temperature: -15°C to +40°C
Altitude: ≤2000m
Humidity: ≤95% daily average, ≤90% monthly average
Core Technologies
Eco-Friendly Materials: No special disposal required at end of life; recyclable and reusable components.
Vacuum Interruption: Compact structure, high breaking capacity, clear isolation and grounding points for enhanced safety.
Seal-Free Design: No leakage risk, maintenance-free with a 30-year design life.
Air Insulation: Environmentally friendly, eliminates SF₆ or toxic byproducts.
Smart Interface: Pre-installed sensor slots and intelligent interfaces enable grid connectivity.
Flexible Configuration: Modular site assembly allows easy expansion and transport.
High Interruption Capability: Up to 1250A/31.5kA, surpassing traditional RMUs (25kA/20kA).
Key Benefits
Reduces installation footprint by 50% compared to traditional switchgear (e.g., KYN28), lowering total project cost by up to 55%.
Forward-thinking design meets future smart grid needs with no need for equipment replacement.
Supports easy expansion with minimal cost and avoids investment in redundant circuits.
Features VCF multifunctional capability, replacing traditional single-function cabinets.
Compact in size, high in capacity.
Application Scenarios
Power generation and distribution systems in power plants and substations
Industrial sectors such as automotive, steel, petrochemical, and mining
Infrastructure: telecom, banks, hospitals, schools, ports, and airports
Commercial and residential buildings: high-rises, malls, smart buildings
Renewable energy: wind, solar, energy storage, wastewater treatment, data centers
Rail and transit: subways, light rail, high-speed rail, tunnels, utility corridors
Defense, aerospace, scientific research, and marine applications
Why Choose Us
Space Saving: Minimum single feeder width of only 550mm allows for wall-mounted installation and significant space savings
Flexible Power Supply: Multiple configurations support redundancy, remote control, and backend monitoring
Low Maintenance: No pressure or leakage risk, eliminating discharge hazards
Environmental Adaptability: Designed for a 30-year lifecycle to withstand demanding operating environments
Why We Can Deliver
Innovative modular structure and core mechanism design
Independently developed cabinet type optimized through simulations and testing
Support for multiple power supply schemes with precise fault isolation
Air insulation ensures stability, eliminating pressure testing and reducing maintenance workload
Durable components with silver plating and precision machining ensure long-term reliability
