真(zhen)(zhen)空(kong)(kong)(kong)斷(duan)(duan)路器是(shi)(shi)判斷(duan)(duan)真(zhen)(zhen)空(kong)(kong)(kong)管真(zhen)(zhen)空(kong)(kong)(kong)度劣化(hua)與否(fou)的常用(yong)(yong)(yong)方(fang)法是(shi)(shi)工頻耐壓法，這種方(fang)法只(zhi)是(shi)(shi)能判斷(duan)(duan)真(zhen)(zhen)空(kong)(kong)(kong)度嚴(yan)重劣化(hua)的滅弧(hu)室。而(er)當(dang)真(zhen)(zhen)空(kong)(kong)(kong)度劣化(hua)到10-1-10-1 Pa時，雖然擊穿電壓沒有降低，但滅弧(hu)室已(yi)不(bu)(bu)合格。HTZK-IV型(xing)真(zhen)(zhen)空(kong)(kong)(kong)開(kai)關(guan)真(zhen)(zhen)空(kong)(kong)(kong)度測試儀采(cai)用(yong)(yong)(yong)新(xin)型(xing)勵磁線圈(quan)，運用(yong)(yong)(yong)磁控放電法測試滅弧(hu)室的真(zhen)(zhen)空(kong)(kong)(kong)度，不(bu)(bu)必(bi)拆卸滅弧(hu)室。同時采(cai)用(yong)(yong)(yong)微機進行(xing)同步控制與數(shu)據采(cai)集處理(li)，使(shi)滅弧(hu)室真(zhen)(zhen)空(kong)(kong)(kong)度的現場測試靈敏度達到了10-5Pa。本儀器Z突出的特(te)點是(shi)(shi)