Rated voltage: 3.3kV, 7.2kV, 12kV
Power frequency withstand voltage (1 min): 42kV
Lightning impulse withstand voltage: 75kV
Rated frequency: 50Hz
4s thermal withstand current (rms): 20kA, 25kA, 31.5kA
Main busbar rated current: 4000A
Branch busbar rated current: 630A, 1250A, 1600A
Dimensions (W×D×H): 400mm × 1100mm × 2200mm
Ingress protection: IP4X (IP2X with circuit breaker compartment door open)
Weight: 200–300kg (including circuit breaker)
Ambient temperature: -15°C ~ +40°C
Altitude: ≤2000m
Relative humidity: ≤95% (daily average), ≤90% (monthly average)
The VGK400-12 switchgear is constructed entirely of environmentally friendly, recyclable materials and uses clean, dry air as the insulation medium—completely free of SF6 gas. Vacuum arc-extinguishing ensures high interrupting capacity with minimal environmental impact. All components are labeled for easy sorting and recycling. A humidity indicator is installed in the air chamber: blue indicates normal, while pink suggests moisture accumulation and the need for service.
Eco Materials – No special disposal needed; all materials are recyclable.
Vacuum Interruption – Compact design, high interrupting capacity, visible disconnection and grounding points.
Seal-Free Design – No leakage risk, maintenance-free, 30-year design lifespan.
Air Insulation – Low-carbon, eliminates risk from SF6 or toxic byproducts.
Smart Interface – Built-in ports for sensors and smart modules to support grid digitization.
Modular Flexibility – Expandable on site with minimal transport and installation complexity.
High Break Current – Rated 1250A/31.5kA, compared to traditional 25kA/20kA ring main units.
Compact footprint: Only 2/3 the size of traditional KYN28 switchgear, reducing total cost by up to 65%.
Future-ready: Supports smart grid functions with no need for future replacements.
Easy to expand: Low-cost upgrades without extra standby circuits.
Multifunctional: Combines VCF functionalities, replacing traditional single-function V units.
Small body, high capacity: Space-saving without compromising on power.
Power plants and substations
Industrial facilities: automotive, steel, petrochemical, mining
Infrastructure: telecom, banks, hospitals, schools, ports, airports
Buildings: residential, commercial complexes, smart buildings
Renewable energy: wind, solar, energy storage
Utilities: wastewater treatment, data centers
Transportation: subways, railways, tunnels, utility corridors
Special sectors: defense, aerospace, scientific research, marine
Space Saving: At just 400mm width per feeder, units can be wall-mounted to save valuable floor space.
Flexible Power Supply: Multiple supply configurations with remote control and monitoring functions.
Low Maintenance: No internal pressure or gas leakage; eliminates discharge risks.
Durability: Designed for a 30-year lifespan to handle harsh environments.
Disruptive modular design with integrated core mechanisms
Independently developed structure, space-optimized through simulations and testing
Dual-supply capability with precise fault isolation
Air-insulated enclosure, pressure-free, eliminating the need for regular gas pressure checks
All parts engineered for longevity, with silver-plated surfaces and rigorous durability testing
