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樓主  發(fā)表于: 2011-11-02 09:27
老師們,請教一下    可控硅在什么情況下容易被擊穿    可控硅裝上之后球磨轉了有一兩磨就被擊穿了    
[ 此帖被來(lái)來(lái)往往在2011-11-02 09:56重新編輯 ]
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1樓  發(fā)表于: 2011-11-02 10:57
用燈泡測試有閃爍的話(huà),你需要確認觸發(fā)信號是否正常,觸發(fā)功率、觸發(fā)角是否足夠。
可控硅擊穿你需要檢查保護回路是否已經(jīng)失效。工作時(shí)額定電壓、電流值是否超范圍。一般使用時(shí)可控硅額定值=3(4)*額定工作值。
如果你選擇可控硅是這個(gè)KP 1600A/1500V   型號,實(shí)際使用時(shí)只能在額定工作電流400~500A,額定電壓在400V以下場(chǎng)所使用。
如果確認是原件質(zhì)量問(wèn)題,不建議你用絕端手段處理這個(gè)問(wèn)題。用實(shí)際技術(shù)手段說(shuō)服供應商更換合格產(chǎn)品。

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