6GK7342-5DA02-0XE0 交流耐壓試驗的方法步驟
1)首先查明其他各項試驗是否都合格合格后才能進行交流耐壓試驗。若有的試驗不合格,必須查明原因,加以消除
2)根據被試品情況,查閱《標準》或《規格》,確定交流耐壓試驗電壓值。
3)根據設備條件和試驗要求,選擇、準備試驗設備,繪出詳細的試驗接線圖。
4)根據實驗設備、現場條件,首先進行試驗設備的合理布局,然后按接線圖進行接線。注意,高壓部分對地、試驗人員對高壓部分都應保證有足夠的安全距離。高壓引線應盡量短,接線要牢靠,非被試部分一律可靠接地。接線完畢應由第二人進行認真的的檢查。要求試驗被試設備位置、儀表檔位合適,調壓器應在輸出零位,接線正確無誤。
5)正式試驗前,先拆去引向被試品的接線,并短接毫安表,合上電源刀閘,慢慢升壓。調整保護球隙的放電電壓為試驗電壓值的1.1~1.15倍。使用3次放電電壓值均接近要求的整定值。然后將電壓升至試驗電壓值,持續1min。再將電壓降到零,最后斷開電源開關。
6)接上引向被試品的接線,然后合上電源開關,開始升壓。當電壓升至0.5倍試驗電壓時,讀取一次電流值,電壓升至試驗電壓時開始計時,并讀取電容電流值,耐壓1min后,迅速均勻地降壓至零,拉開電源開關,對被試品放電。
7)試驗后,對有機絕緣立即觸摸被試部分,檢查有無發熱,并測量絕緣電阻值。
6GK7342-5DA02-0XE0 2094-xnbrkt-1
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特價供應 力士樂---產品 2-4周供貨
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