Outdoor High Voltage Isolating Vacuum Load Switch--FZW32-12 (40.5) type

Product description

It is suitable for outdoor three - phase AC power distribution systems with a rated voltage of 12 kV (the 40.5 in the model might be a related parameter or an error in some cases, as the common rated voltage for this type is 12 kV), a rated current of 630 A, and a rated frequency of 50 Hz. It is used to switch and close power distribution lines under load, and can also be used to switch and close no - load lines and no - load transformers. This load switch can be used in the power, metallurgy, mining, chemical industry, and other departments' power transmission and distribution systems to control circuits, and is also suitable for places with frequent operations.

Product parameters

• Rated Voltage: 12 kV.
• Rated Frequency: 50 Hz.
• Rated Current: 630 A.
• Rated Active Load Breaking Current: 630 A.
• Rated Closed - Loop Breaking Current: 630 A.
• 5% Rated Active Load Breaking Current: 31.5 A.
• Rated Cable Charging Breaking Current: 10 A.
• Rated Breaking Capacity of No - Load Transformer: 1600 kVA.
• Rated Breaking Capacitor Bank Current: 100 A.
• 1 - min Power - Frequency Withstand Voltage: Vacuum break / phase - to - phase, phase - to - earth, disconnecting break is 42/48 kV.
• Lightning Impulse Withstand Voltage: Phase - to - phase, phase - to - earth / disconnecting break is 75/85 kV.
• Rated Short - Time Withstand Current (Thermal Stability): 20 kA.
• Rated Short - Circuit Closing Current: 50 kA.
• Mechanical Life: 10,000 times.
• Vacuum Interrupter Contact Erosion Limit: 0.5 mm.
• Average Opening Speed: 1.1 ± 0.2 m/s.
• Three - Phase Opening Asynchronism: < 5 ms.
• Three - Phase Closing Asynchronism: < 2 ms.
• Distance Between Charged Bodies and Phase - to - Earth: > 200 mm.
• Auxiliary Circuit Resistance: ≥ 400 μΩ.

Product features

• Excellent Arcing - Quenching Capability4: It uses the vacuum interrupter principle, which has a strong arcing - quenching ability, ensuring reliable disconnection of the load and a long service life.
• Compact Design: It has a small volume and a lightweight structure, which is easy to install and maintain, and is suitable for various outdoor installation environments.
• Visible Disconnecting Fracture3: The disconnector and the three - phase vacuum interrupter are interlocked. When opened, there is a visible disconnecting fracture, which has the function of an isolating switch and is convenient for maintenance and inspection.
• High Safety and Reliability7: The load switch has no explosion hazard and does not require maintenance. All components use stainless - steel materials, and the chassis uses stainless - steel materials or hot - galvanized carbon steel coated with anti - UV protection paint, which can ensure the normal operation of the product in outdoor environments.
• Diverse Operation Modes4: It can be operated manually, electrically, or remotely, providing convenience for different application scenarios and operation requirements.
• Wide Range of Applications: It can be widely used in the transformation of rural and urban distribution networks, railway distribution circuits, and other power transmission and distribution systems, especially in places with frequent operations.