FZW32-24 Series Outdoor High Voltage Isolating Vacuum Load Break Switch

2025-07-30

The FZW32-24 Series is an outdoor high-voltage switch engineered for 24kV power distribution networks, integrating isolating and vacuum load-breaking funCtions to ensure safe operation and reliable power control in outdoor environments.

Core Design & Weather Resistance

Constructed with a robust stainless steel enclosure and silicone rubber insulation sleeves, the switch is built to withstand extreme outdoor conditions. Key design features include:

IP65 protection rating, resisting dust, heavy rain, and water immersion (up to 1m for 30 minutes)

Wide operating temperature range: -40°C to +60°C, suitable for cold climates, deserts, and coastal areas with high salinity

Anti-ultraviolet (UV) coating on external components to prevent material aging from prolonged sunlight exposure

Performance & Switching Capability

Rated Parameters: 24kV rated voltage, 630A continuous current, and 25kA short-time withstand current (3s)

Vacuum InterruPtion: Equipped with a vacuum interrupter for arc extinction, enabling safe breaking of load currents up to 630A and switching of no-load transformers/cables

Isolation Function: Provides a visible isolating gap when open, meeting IEC 62271-102 standards for safe maintenance and circuit isolation

Operation & Safety

The switch supports both manual (hand crank) and electric (motor-driven) operation, with:

Mechanical and electrical interlocks to prevent misoperation (e.g., closing when isolated, opening under short circuit)

Optional remote control via RS485 communication, compatible with smart grid monitoring systems

Emergency manual override for operation during power outages

Application Scope

Ideal for outdoor 24kV power distribution scenarios including:

Overhead power lines in rural and urban areas

Outdoor substations and transformer stations

Renewable energy systems (wind farms, solar parks) for grid connection switching

Industrial parks and mining areas with outdoor power distribution needs

Operational Advantages

Low Maintenance: Vacuum interrupter and sealed mechanism eliminate the need for gas/oil refilling, reducing upkeep requirements

Long Service Life: Mechanical life exceeds 5,000 operations; electrical life for load breaking reaches 3,000 cycles

Easy Installation: Pole-mounted or base-mounted design with standardized dimensions, fitting most 24kV outdoor distribution infrastructure

Safety Enhancement: Visible isolation gap and lockable operating handle ensure secure access during inspections