The number of restrikes can be decreased significantly by using a bipolar load current arc conditioning.

只有通過兩個極性負載電流的電弧老煉才能有效地減少真空開關(guān)的弧后延時重擊穿現(xiàn)象国产真实乱子精品视频。

The laws of the over-voltages during restrikes and of the ground-fault currents are shown.

給出了重燃弧暫態(tài)過電壓和接地故障電流的規(guī)律免费一级黄色操B网站，并給出了物理解釋欧洲一区。

So far, it is not very clear why the delayed postarc restrikes occur. In this thesis, two kinds of restrikes have been discovered through prebreakdown current measurment and analyses,(1) the abrupt breakdown, it is characterized by a suddenly appeared, with a period of a few microsecond prebreakdown current, it is initiated by particle. This kind of restrikes can be reduced by decreasing loosly adhesive clumps which drop into the gap after arc extinction.

弧后延時重擊穿的起因尚不清楚精品一级在线免费，本文通過對預(yù)擊穿電流的測試和分析精品交在线视频，發(fā)現(xiàn)這種重擊穿主要有兩種類型：（1）突發(fā)性的擊穿類型，其特征是擊穿前看不到預(yù)擊穿電流的增長過程亚洲激情乱伦，預(yù)擊穿電流的形成只有數(shù)微秒時間色哟哟网址在线观看，這種擊穿是由顆粒引起的一级A片30分钟免费观看，減少大顆粒脫落可以降低這種擊穿的幾率。

In this thesis, the load current arc conditioning effect on the postarc restrikes has been investigated by using a synthetic circuit, experiments show that the restrikes can be decreased by using arc conditioning process with polarity effect.

本文在合成回路上研究了負載電流電弧的老煉作用偷窥偷拍综合，發(fā)現(xiàn)負載電流電弧老煉可以明顯地降低弧后延時重擊穿率亚洲午夜视频国产A片，這種老煉具有極性效應(yīng)。