1
00:00:00,000 --> 00:00:02,005
220千伏断路器

2
00:00:02,005 --> 00:00:05,800
采用气吹压力与开断电流自适应熄弧原理

3
00:00:05,800 --> 00:00:08,573
继承了压气式断路器的结构优点

4
00:00:08,573 --> 00:00:11,388
具有尽可能少的灭弧室零部件

5
00:00:11,388 --> 00:00:14,278
使产品具有高的电气可靠性

6
00:00:14,280 --> 00:00:18,285
触头和弧触头均采用一体烧结式铜钨触头

7
00:00:18,285 --> 00:00:20,400
具有良好的机械防变形

8
00:00:20,400 --> 00:00:24,546
和耐弧能力高 烧损较小 电寿命长

9
00:00:24,547 --> 00:00:26,802
它静动触头紧密插接

10
00:00:26,802 --> 00:00:29,717
动气缸的气缸喷头长于动触头

11
00:00:29,717 --> 00:00:31,987
静触头插入到动气缸中

12
00:00:31,987 --> 00:00:34,307
且和静气缸紧密连接

13
00:00:34,307 --> 00:00:36,062
当断路器分闸时

14
00:00:36,062 --> 00:00:38,417
动触头向下运动的同时

15
00:00:38,417 --> 00:00:40,392
带动动气缸一起运动

16
00:00:40,392 --> 00:00:42,253
随着气缸空间的缩小

17
00:00:42,253 --> 00:00:45,480
气缸里的六氟化硫气体被压缩

18
00:00:45,481 --> 00:00:47,716
首先分离的是动静触头

19
00:00:47,716 --> 00:00:50,541
分开瞬间由于距离小且电压高

20
00:00:50,541 --> 00:00:51,827
会击穿绝缘

21
00:00:51,827 --> 00:00:53,201
拉出电弧

22
00:00:53,201 --> 00:00:54,806
随着运动的继续

23
00:00:54,806 --> 00:00:57,211
当静触头离开动气缸时

24
00:00:57,211 --> 00:00:59,454
对动气缸的密闭会被打开

25
00:00:59,454 --> 00:01:03,334
气缸里压缩的高压气体通过喇叭口气缸喷嘴

26
00:01:03,334 --> 00:01:04,764
形成爆炸式喷发

27
00:01:05,388 --> 00:01:08,858
1.由于六氟化硫气体具有高负性

28
00:01:08,858 --> 00:01:10,723
能够迅速吸收电子

29
00:01:10,723 --> 00:01:12,841
形成高浓度负离子空间

30
00:01:12,841 --> 00:01:14,641
阻碍了电子流通

31
00:01:14,642 --> 00:01:18,828
2.加上六氟化硫气体爆炸式横向冲击

32
00:01:18,828 --> 00:01:23,228
3.外加冷的高压气体可冲击冷却炙热的电弧

33
00:01:23,229 --> 00:01:26,722
4.以及动静触头分离的距离增大

34
00:01:26,722 --> 00:01:29,457
5.优良的适宜的电场特性

35
00:01:29,457 --> 00:01:33,482
使其开断感性电流几乎无截流过电压波形

36
00:01:33,483 --> 00:01:34,728
5个条件下

37
00:01:34,728 --> 00:01:36,653
当电流波形过零时

38
00:01:36,653 --> 00:01:38,228
电弧迅速熄灭

39
00:01:38,228 --> 00:01:39,033
消散

40
00:01:39,033 --> 00:01:41,656
从而完成了媳弧灭弧的功能