FZW32-24/1250A Outdoor High-Voltage Load Switch, 12KV Outdoor Pole-Mounted High-Voltage Isolation Load Switch
Contact Info
- Xiangyang Industrial Zone, Liushi Town, Yueqing City,
- 李经理
- 15167417505
- 864640886@qq.com
The FZW32 outdoor high-voltage load-break switch with isolating function is an outdoor high-voltage device designed for use in three-phase AC 50Hz power distribution networks with rated voltages of 12kV or 40.5kV. It is mainly used for breaking load currents, transformer no-load currents, cable charging currents, and closing load currents, integrating breaking, isolation, connection, and switching functions. This product can be used in conjunction with fuses as a transformer protection component, making it suitable for the transformation of power distribution systems in rural grids, urban grids, railways, and other fields.
This switch adopts a structure where the vacuum interrupter is linked with the isolating knife, creating a distinct isolating gap when opened. It features no explosion risk and requires no maintenance. Its characteristics include small size, light weight, attractive appearance, and simple operation. The body components are made of stainless steel, and the base is made of stainless steel or hot-dip galvanized carbon steel with UV resistance. It supports single-pole or double-pole installation, as well as manual, electric, and remote operation modes.
Main Technical Parameters and Environmental Conditions
Rated current: 630A for FZW32-12, 1250A for FZW32-40.5.
Rated short-circuit closing current: Up to 63kA.
Mechanical life: Up to 10,000 operations.
Applicable altitude: Generally not exceeding 2000 meters (some models can reach 3000 meters or higher).
Operating temperature: -30℃ to +40℃.
Environmental humidity: Daily average not exceeding 95%, monthly average not exceeding 90%.
Pollution level: Grade Ⅳ.
Seismic intensity: Not exceeding 8 degrees.
Functions and Features
Arc Extinction and Isolation: Adopts vacuum arc extinction technology with strong arc extinguishing capability and no pollution. The isolating knife is linked with the vacuum interrupter, providing a clearly visible gap after opening, and also functions as an isolating switch.
Safety and Reliability: No explosion risk, long electrical life, and capable of frequent operation.
Durable Structure: Made of stainless steel components and weather-resistant materials, suitable for outdoor environments.
Wide Application: Suitable for locations requiring frequent operation, and can be used in power transmission and distribution systems of sectors such as electric power, metallurgy, mining, and chemical industry. When equipped with an electric mechanism and controller, it can be used as a line breaking switch or automatic circuit breaker.
Typical Model: FZW32-12
The FZW32-12 outdoor high-voltage isolating vacuum load-break switch has a rated voltage of 12kV and a rated current of 630A. Its insulation withstand parameters are as follows: 1-minute power frequency withstand voltage (vacuum gap / isolating gap) 42/48kV, lightning impulse withstand voltage (phase-to-phase and phase-to-ground / isolating gap) 75/85kV. The rated short-time withstand current (thermal stability) is 20kA, and the rated short-circuit duration is 4s.
This product adopts a three-pole post-type structure, and the three-pole linked operation of the isolating knife helps ensure the synchronization of opening operations. The insulation part uses silicone rubber bushings, which have the characteristics of resistance to high and low temperatures and aging. As a new generation of high-voltage electrical product, it complies with GB3804 and IEC standards and has passed the relevant new product appraisal.
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