| 12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364 |
- 1
- 00:00:00,000 --> 00:00:02,045
- 10千伏高压柜灭弧
- 2
- 00:00:02,045 --> 00:00:05,330
- 断路器从工作位置到检修位置时
- 3
- 00:00:05,330 --> 00:00:08,173
- 当梅花触头和静触头分开瞬间
- 4
- 00:00:08,173 --> 00:00:10,233
- 高电压会击穿空气
- 5
- 00:00:10,233 --> 00:00:12,973
- 产生放电现象并形成电弧
- 6
- 00:00:12,973 --> 00:00:16,026
- 由于梅花触头采用多点触碰式设计
- 7
- 00:00:16,026 --> 00:00:17,961
- 同时断开多个回路
- 8
- 00:00:17,961 --> 00:00:20,981
- 电弧的能量被均摊到各个触点上
- 9
- 00:00:20,981 --> 00:00:23,786
- 从而每个触点上的电弧能量减小
- 10
- 00:00:23,800 --> 00:00:27,386
- 使得断路器的灭弧能力得到显著提高
- 11
- 00:00:27,387 --> 00:00:29,907
- 且动触头采用弧形设计
- 12
- 00:00:29,907 --> 00:00:32,657
- 让电场行成向外扩张的电场
- 13
- 00:00:32,657 --> 00:00:33,920
- 增加了横向力
- 14
- 00:00:33,920 --> 00:00:36,405
- 加上随着距离的越来越大
- 15
- 00:00:36,405 --> 00:00:39,915
- 使电弧在电压低于阈值时自行熄灭
- 16
- 00:00:39,915 --> 00:00:42,160
- 无需额外配置灭弧装置
|
