EVN-12 Indoor Vacuum Circuit Breaker
The EVN-12 is the latest generation 12kV indoor vacuum circuit breaker independently developed by NAIJI Electric. Features solid-sealed poles with miniaturized ultra-low resistance vacuum arc chambers cast in epoxy resin. M2-E2-C2 performance level with 30,000-cycle mechanical life.
产品特点
- 额定电压12kV，额定电流最高5000A
- 短路开断容量最高50kA
- 机械寿命：30,000次
- M2-E2-C2性能等级（GB和IEC）
- 固封极柱配超低电阻真空灭弧室
- 对流通风降低温升
- 主导体镀银降低接触电阻
- 模块化弹簧机构——自润滑轴承免维护
- 优化凸轮曲线油缓冲器——减少弹跳
技术参数
| Rated Voltage | 12 kV |
| Rated Current | Up to 5000 A |
| Rated Short-Circuit Breaking Current | 50 kA |
| Mechanical Life | 30,000 operations |
| Performance Level | M2-E2-C2 (GB & IEC) |
| Insulation | Epoxy resin solid-sealed poles |
| Cooling | Convection ventilation |
| Operating Mechanism | Modular spring mechanism |
应用领域
执行标准
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