JYK-III真空度測試儀基于電離電荷的采樣技術，顯著提高了真空滅弧室的真空度測量的準確性。

JYK-III真空度測試儀功能介紹

● 內置國內外幾乎所有真空滅弧室(shi)的測量曲線，管(guan)型可自行選擇

● 漏(lou)電(dian)(dian)電(dian)(dian)流的(de)(de)處理。采用兩次起動高壓的(de)(de)方法(fa)，扣(kou)除(chu)漏(lou)電(dian)(dian)電(dian)(dian)流，保證了真空滅弧室(shi)真空度的(de)(de)測(ce)量精度

● 完善的輸入(ru)保護電路(lu)。儀器(qi)能接(jie)受較強的電流(liu)沖擊，當遇到*漏氣的真空(kong)管時，儀器(qi)自動識別

JYK-III技術指標

真(zhen)空(kong)(kong)度(du)(du)檢(jian)測儀(yi)采用磁(ci)(ci)控放電(dian)(dian)(dian)(dian)法進行測量。將真(zhen)空(kong)(kong)開(kai)關滅(mie)(mie)(mie)弧室的(de)(de)兩(liang)觸(chu)頭(tou)拉開(kai)一(yi)定(ding)(ding)的(de)(de)距離(li)(li)，施加電(dian)(dian)(dian)(dian)場(chang)脈沖(chong)高壓，將滅(mie)(mie)(mie)弧室置于(yu)(yu)螺(luo)線(xian)管(guan)(guan)圈(quan)內或將新(xin)型(xing)(xing)(xing)(xing)電(dian)(dian)(dian)(dian)磁(ci)(ci)線(xian)圈(quan)置于(yu)(yu)滅(mie)(mie)(mie)弧室外側，向線(xian)圈(quan)通(tong)(tong)以(yi)(yi)大(da)電(dian)(dian)(dian)(dian)流，從而在滅(mie)(mie)(mie)弧室內產生(sheng)與高壓同(tong)步的(de)(de)脈沖(chong)磁(ci)(ci)場(chang)。這樣，在脈沖(chong)強(qiang)磁(ci)(ci)場(chang)和強(qiang)電(dian)(dian)(dian)(dian)場(chang)的(de)(de)作(zuo)用下(xia)，滅(mie)(mie)(mie)弧室中的(de)(de)帶電(dian)(dian)(dian)(dian)離(li)(li)子(zi)(zi)作(zuo)螺(luo)旋運動，并與殘余(yu)氣體分(fen)子(zi)(zi)發生(sheng)碰撞電(dian)(dian)(dian)(dian)離(li)(li)，所(suo)產生(sheng)的(de)(de)離(li)(li)子(zi)(zi)電(dian)(dian)(dian)(dian)流與殘余(yu)氣體密度(du)(du)即真(zhen)空(kong)(kong)度(du)(du)近似成比(bi)例(li)關系。對于(yu)(yu)不(bu)同(tong)的(de)(de)真(zhen)空(kong)(kong)管(guan)(guan)型(xing)(xing)(xing)(xing)號（管(guan)(guan)型(xing)(xing)(xing)(xing)），由于(yu)(yu)其結構不(bu)同(tong)，在同(tong)等觸(chu)頭(tou)開(kai)距、同(tong)等真(zhen)空(kong)(kong)度(du)(du)、同(tong)等電(dian)(dian)(dian)(dian)場(chang)與磁(ci)(ci)場(chang)的(de)(de)條件下(xia)，離(li)(li)子(zi)(zi)電(dian)(dian)(dian)(dian)流的(de)(de)大(da)小也不(bu)相(xiang)同(tong)。通(tong)(tong)過實驗可以(yi)(yi)標定(ding)(ding)出各(ge)種管(guan)(guan)型(xing)(xing)(xing)(xing)的(de)(de)真(zhen)空(kong)(kong)度(du)(du)與離(li)(li)子(zi)(zi)電(dian)(dian)(dian)(dian)流間(jian)的(de)(de)對應關系曲線(xian)。當測知離(li)(li)子(zi)(zi)電(dian)(dian)(dian)(dian)流后，就可以(yi)(yi)通(tong)(tong)過查詢該管(guan)(guan)型(xing)(xing)(xing)(xing)的(de)(de)離(li)(li)子(zi)(zi)電(dian)(dian)(dian)(dian)流一(yi)真(zhen)空(kong)(kong)度(du)(du)曲線(xian)獲(huo)得該管(guan)(guan)型(xing)(xing)(xing)(xing)的(de)(de)真(zhen)空(kong)(kong)度(du)(du)。

真(zhen)空(kong)度(du) 測(ce)試儀是電力系(xi)統中普遍使用(yong)的高壓電器，其核心部件是真(zhen)空(kong)滅(mie)弧(hu)室，由于滅(mie)弧(hu)室是以真(zhen)空(kong)條件作(zuo)為工作(zuo)基礎的，所以它不象油開關(guan)，SF6開關(guan)那(nei)樣容易檢測(ce)其質量。傳統上，真(zhen)空(kong)斷路器用(yong)戶判(pan)斷滅(mie)弧(hu)室真(zhen)空(kong)度(du)的方法(fa)是工頻耐(nai)壓法(fa)，這種方法(fa)只(zhi)能粗略判(pan)斷真(zhen)空(kong)度(du)嚴重化的滅(mie)弧(hu)室。