Outdoor Pole-Mounted SF6 Load Switch 12kV

Product Overview

Key Technical Features

• SF6 Gas Insulation & Arc Extinguishing: Uses 99.99% pure SF6 gas for reliable insulation and fast arc extinction, ensuring safe switching performance.
• 100% Maintenance-Free Design: Fully sealed switch body prevents condensation, oxidation, and corrosion of primary circuit and mechanism components, eliminating the need for regular servicing.
• Explosion-Proof Safety: Equipped with a pressure relief device that automatically releases internal pressure during faults, protecting personnel and the surrounding environment.
• Misoperation Prevention: Local locking mechanism blocks remote or local switching during maintenance; intelligent models support remote monitoring for enhanced safety.
• Low-Pressure Lockout: Triggers mechanical and electrical locking when SF6 pressure drops below safe levels, preventing unsafe operation.
• Vacuum Arc Extinguishing & SF6 Insulation: Combines vacuum arc quenching with SF6 gas insulation in an oil-free design for superior performance.
• Three-Phase Common Box Layout: Porcelain bushing cable connections, fully sealed mechanism, aviation-grade sockets, and full encapsulation technology ensure excellent weather resistance and anti-condensation performance.
• Integrated Isolation & Asynchronous Linkage: Built-in isolation break and vacuum interrupter series linkage provide strong breaking capacity and high operational safety.
• Non-Blocking Current Protection: Prevents the switch from opening during fault current conditions, avoiding equipment damage.

Technical Specifications

Operating Environment

• Ambient Temperature: -35°C to +40°C
• Wind Speed: ≤35m/s
• Altitude: ≤1000m (custom insulation available for higher elevations)
• Seismic Resistance: ≤8 degrees
• Humidity: Monthly average ≤90%, Daily average ≤95%
• Pollution Class: IV
• Installation Site: Outdoor areas free from flammable, explosive, chemical corrosion, and severe vibration

Controller Features

• Line Voltage-Based Fault Detection: Achieves on-site fault handling through delayed switching and coordination with substation protection, no battery required.
• Autonomous Fault Isolation: Identifies faults and isolates sections without relying on communication or a master station.
• Durable Housing: Unsaturated polyester construction with IP67 protection, offering weather resistance, anti-condensation, and a compact, lightweight design.
• Supercapacitor Backup Power: Maintenance-free power supply for reliable operation.
• Local Fault Indication: Clear visual display for quick fault identification.
• Wireless Communication: ZIGBEE and Bluetooth support for pole-side maintenance via PDA, eliminating the need for climbing.
• Remote Monitoring & Control: Enables remote signaling, telemetry, remote control, and parameter adjustment when paired with a communication module.

Application Scenarios

• Urban & Rural Distribution Grids: Primary switching device for 12kV overhead lines in city and rural power networks.
• Industrial Power Distribution: Protects and controls outdoor power supply for factories, mines, and industrial parks.
• Renewable Energy Integration: Used in solar and wind farm distribution systems for reliable load management.
• Critical Infrastructure: Ensures power continuity for hospitals, data centers, and commercial facilities via outdoor feeder lines.
• Remote Area Power Supply: Ideal for off-grid and remote locations due to its maintenance-free design and robust environmental tolerance.