SPV-12 Outdoor Vacuum Circuit Breaker (12kV)
The SPV-12 is a 12kV oil-free, SF6-free, maintenance-free outdoor vacuum circuit breaker pioneered by NAIJI Electric. Features three-phase pillar-type structure with longitudinal magnetic field vacuum arc extinguishing technology and solid epoxy resin insulation (APG vacuum casting). The spiral groove contacts produce a rotating magnetic field, accelerating ionized particle diffusion and reducing arc energy. Special alloy shielding rapidly absorbs arc energy for low heat, short extinguishing time, and long service life. Imported outdoor-grade epoxy resin with integral vacuum casting — proven by 20+ years of outdoor operation with no surface carbonization. Every unit X-ray inspected. Weighs only 2/3 of comparable products.
产品特点
- 额定电压12kV——无油、无SF6、免维护
- 纵向磁场旋弧灭弧——螺旋槽触头产生旋转磁场，灭弧性能卓越
- 环氧树脂固体绝缘（APG真空浇注）——耐紫外线、防潮、耐盐雾
- 每只成品逐一X光检查
- 机械寿命：10,000次
- 电气寿命：额定电流下10,000次以上
- 重量仅为同类产品的2/3
- 进口弹簧钢丝+轴承结构+锌镍钴合金表面处理
- 航空润滑油适用于极端寒冷地区
- 可配FTU实现配电自动化（FA/DA）
技术参数
| Rated Voltage | 12 kV |
| Rated Current | 630 / 1250 A |
| Rated Frequency | 50 Hz |
| Rated Short-Circuit Breaking Current | 20 / 25 kA |
| Rated Peak Withstand Current | 50 / 63 kA |
| Rated Short-Circuit Making Current (peak) | 50 / 63 kA |
| Rated Short-Time Withstand Current | 20kA/4s, 25kA/4s |
| Rated Operating Sequence | O—0.3s—CO—180s—CO |
| Short-Circuit Breaking Operations | 30 times |
| Lightning Impulse Withstand (phase-phase/earth) | 75 kV (peak) |
| Lightning Impulse Withstand (across isolating distance) | 85 kV (peak) |
| Power Frequency Withstand 1min Dry (phase/earth · across gap) | 42 / 49 kV |
| Power Frequency Withstand 1min Wet (phase/earth · across gap) | 34 / 35 kV |
| Secondary Circuit Withstand Voltage | 2000 V |
| Contact Distance | 9±1 mm |
| Contact Overtravel | 2.5±0.5 mm |
| Opening Speed | 1.4±0.2 m/s |
| Closing Speed | 0.7±0.2 m/s |
| Contact Closing Bounce Time | ≤2 ms |
| Phase-to-Phase Distance | 340±1.5 mm |
| Three-Phase Synchronization | ≤2 ms |
| Circuit Resistance (per phase) | ≤70 μΩ |
| Closing Time | 25~60 ms |
| Opening Time | 20~40 ms |
| Energy Storage Motor Power | 40 W |
| Mechanical Life | 10,000 operations |
| Electrical Life | 10,000+ operations |
| Insulation Medium | Solid epoxy resin (APG vacuum cast) |
| Arc Extinguishing | Longitudinal magnetic field rotating arc |
| Temperature Range | -25°C to +40°C |
| Maintenance | Maintenance-free |
应用领域
执行标准
相关产品
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SPV-24 Outdoor Vacuum Circuit Breaker (24kV)
The SPV-24 is a 24kV oil-free, SF6-free, maintenance-free outdoor vacuum circuit breaker by NAIJI Electric. Extended voltage class with enhanced insulation levels (125/145kV lightning impulse withstand). Same proven longitudinal magnetic field rotating arc technology and solid epoxy resin insulation (APG vacuum casting) as the SPV-12. Every unit X-ray inspected. Weighs only 2/3 of comparable products. Ideal for 20kV distribution systems and higher voltage applications.