真(zhen)空(kong)斷路器(qi)是(shi)(shi)判(pan)(pan)斷真(zhen)空(kong)管真(zhen)空(kong)度(du)(du)(du)劣化(hua)與否的常用方(fang)法是(shi)(shi)工(gong)頻耐壓(ya)(ya)法，這種方(fang)法只是(shi)(shi)能判(pan)(pan)斷真(zhen)空(kong)度(du)(du)(du)嚴重劣化(hua)的滅弧(hu)室。而當真(zhen)空(kong)度(du)(du)(du)劣化(hua)到10-1-10-1 Pa時，雖然擊(ji)穿電壓(ya)(ya)沒有降(jiang)低，但滅弧(hu)室已不(bu)合格。HTZK-IV型真(zhen)空(kong)開關(guan)真(zhen)空(kong)度(du)(du)(du)測(ce)(ce)試(shi)(shi)儀(yi)(yi)采用新型勵(li)磁線圈，運用磁控(kong)放電法測(ce)(ce)試(shi)(shi)滅弧(hu)室的真(zhen)空(kong)度(du)(du)(du)，不(bu)必拆卸滅弧(hu)室。同時采用微機進行同步控(kong)制(zhi)與數據(ju)采集處理，使滅弧(hu)室真(zhen)空(kong)度(du)(du)(du)的現場測(ce)(ce)試(shi)(shi)靈敏度(du)(du)(du)達到了10-5Pa。本(ben)儀(yi)(yi)器(qi)Z突出的特點是(shi)(shi)