真空(kong)(kong)開關管(guan)是真空(kong)(kong)斷(duan)路器的關鍵部分,負責(ze)開斷(duan)電(dian)路。加上(shang)操作機(ji)構就是真空(kong)(kong)斷(duan)路器了。真空(kong)(kong)開關管(guan)內是兩個倒扣(kou)的煙灰缸形狀的觸頭,斷(duan)開回路電(dian)流(liu)時(shi),電(dian)弧從接(jie)觸面中間(jian)沿著(zhu)開好(hao)的導向(xiang)間(jian)隙向(xiang)外發散,被冷卻而...