4、錯(cuò)誤操作隔離開(kāi)關(guān)后應(yīng)如何處理?

(1)錯(cuò)拉隔離開(kāi)關(guān)時(shí)，刀閘剛離開(kāi)靜觸頭便發(fā)生電弧，這時(shí)立即合上，就可以消弧，避免事故，若刀閘已全部拉開(kāi)，則不許將誤拉的刀閘再合上;

廈門(mén)岳航計(jì)算機(jī)工程有限公司

聯(lián)系人：李素云

企業(yè)QQ：2851195446，2851195466

手機(jī)：18965423501

座機(jī)：0592-5165501

(2)錯(cuò)拉隔離開(kāi)關(guān)時(shí)，即使合錯(cuò)，甚至在合閘時(shí)發(fā)生電弧，也不準(zhǔn)再拉開(kāi)，因?yàn)閹ж?fù)荷刀閘會(huì)造成三相弧光短路。

5、什么叫RLC并聯(lián)諧振?

電阻、電感和電容相并聯(lián)的電路，在一定頻率的正弦電源作用下，出現(xiàn)電路端電壓和總電流同相，整個(gè)電路呈阻性的特殊狀態(tài)，這個(gè)狀態(tài)叫并聯(lián)諧振。

6、距離保護(hù)的起動(dòng)元件采用負(fù)序、零序增量元件有何有點(diǎn)?

(1)靈敏度高;

(2)可見(jiàn)做振蕩閉鎖裝置的起動(dòng)元件;

(3)在電壓二次回路斷線(xiàn)時(shí)不會(huì)誤動(dòng);

(4)對(duì)稱(chēng)分量的出現(xiàn)于故障的相別無(wú)關(guān)，故起動(dòng)元件可采用單個(gè)繼電器，因此比較簡(jiǎn)單。

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