1794-TB31794-TB3
【簡單介紹】
【詳細(xì)說明】
1794-TB3
1794-TB3
工程師在維修變頻器過程中,經(jīng)常遇到電解電容損壞的情況,下面我就為大家說一下電解電容器損壞的原因!
1、整流管損壞
當(dāng)整流橋中有一個整流管被擊穿時,整流后的電壓將出現(xiàn)交流成分,濾波電容器上出現(xiàn)反向電壓,濾波電容器因此而損壞。
2、電壓分配不均
當(dāng)均壓電阻中有一個損壞時,互相串聯(lián)的兩組電容器上的電壓分配變得不均衡,則電壓較高的電容器容易損壞。
3、電容器漏電電流過大
電解電容接入電路時,是存在漏電流的。正常情況下,漏電流是很小的。但如果由于電容器老化,或由于電容器本身的質(zhì)量較差等原因,漏電流將增大,使電解電容器將因嚴(yán)重發(fā)熱而損壞。
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