| Customization: | Available |
|---|---|
| Transport Package: | Fumigation Wooden Box |
| Trademark: | YQALT |
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FN5-12(R)DSeries Indoor High Voltage Load Breaker Switch
Product Overview:
The FN5-12(R)D Series Indoor High Voltage Load Break Switch is designed for three-phase AC systems with a rated voltage of 12kV and frequency of 50Hz. This load break switch is ideal for reliable control of electrical power distribution in industrial, commercial, and utility applications, offering superior performance in challenging environments.
Key Features:
• High Performance Insulation: The FN5-12(R)D utilizes advanced insulation technology to ensure superior electrical safety. It is tested to withstand a rated power frequency voltage of 42/48kV (virtual value) and can endure a lightning impulse voltage of up to 75/85kV (peak), protecting the equipment against transient overvoltages.
• Rated Short-Circuit Breaking Capacity: With a rated short-circuit breaking current of 50kA, this load switch provides excellent reliability in handling fault currents, ensuring safe interruption of power under fault conditions.
• Operational Flexibility: The FN5-12(R)D Series is equipped with a spring-loaded mechanism, allowing for manual or motorized operation. It supports frequent switching and provides high stability for power systems that require regular load management.
• High Reliability: Engineered to meet the highest standards of reliability, the FN5-12(R)D can function in environments with ambient temperatures ranging from -25°C to +40°C, and in relative humidity conditions with daily averages of up to 95% and monthly averages up to 90%.
• Durability: Built with rugged components and a compact design, the switch is resistant to environmental stresses, supporting operation in regions with seismic intensities up to 8 degrees and elevations of up to 1000 meters above sea level.
• Compact and Lightweight: This load breaker switch offers a compact body and reduced weight, making installation easier and requiring minimal space.
Applications:
The FN5-12(R)D Series is particularly suited for:
• Indoor distribution networks for industrial, commercial, and utility sectors
• Power control systems in substations, power plants, and urban grids
• Transformer control and protection systems in high-voltage switchgear panels
• Environments where frequent load operations are required
Technical Specifications:
• Rated Voltage: 12kV
• Max Working Voltage: 12kV
• Rated Frequency: 50Hz
• Rated Current: 100A
• Rated Short-Circuit Breaking Current: 50kA
• Power Frequency Withstand Voltage: 42/48kV (virtual value)
• Lightning Impulse Withstand Voltage: 75/85kV (peak)
• Operating Temperature Range: -25°C to +40°C
• Relative Humidity: Daily average ≤ 95%, Monthly average ≤ 90%
• Elevation: ≤ 1000 meters
• Seismic Intensity: ≤ 8 degrees
Compliance:
The FN5-12(R)D complies with the relevant IEC and GB/T standards for medium-voltage switchgear, ensuring robust performance and safety in demanding applications.
| Model | KV/Rated Volt | A /Rated Current | A/Rated Current of fuses |
| SDLA.J | 12 | 50 | 6.3.10,16,20,25,31.5,40 |
| SFLA.J | 12 | 100 | 50,63,71,80,100 |
| SKLA.J | 12 | 125 | 125 |
| Rated Volt kV | Power Frequency Voltage withstand kV | Rated Current A | Thermal Stable Current(4s) A | Dynamic Stable Current(peak) kA | Rated Breaking Current A | Short Circuit Breaking Current kA |
| 12 | 42 | 400 | 12.5 | 31.5 | 400 | 31.5 |
| 48 | 630 | 20 | 50 | 630 | 50 |
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