試(shi)(shi)驗(yan)完畢,首(shou)先(xian)切斷高壓(ya)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan),一(yi)般需待試(shi)(shi)品上(shang)的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)降至方試(shi)(shi)驗(yan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)以(yi)下,將被試(shi)(shi)品經(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)接(jie)(jie)地(di)放(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian),后(hou)直(zhi)(zhi)接(jie)(jie)接(jie)(jie)地(di)放(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)。對(dui)于大容量試(shi)(shi)品,如(ru)長電(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容器(qi)、大電(dian)(dian)(dian)(dian)(dian)(dian)(dian)機等,需放(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)5min以(yi)上(shang),以(yi)使試(shi)(shi)品上(shang)的(de)(de)充電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)荷(he)放(fang)(fang)(fang)盡。另外,對(dui)附近電(dian)(dian)(dian)(dian)(dian)(dian)(dian)力(li)設備,有(you)感應(ying)靜(jing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)的(de)(de)可(ke)能(neng)(neng)時(shi),也應(ying)予以(yi)放(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)或事先(xian)短接(jie)(jie)。經(jing)過充分放(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)后(hou),才能(neng)(neng)接(jie)(jie)觸試(shi)(shi)品。對(dui)于在現場組裝(zhuang)的(de)(de)倍壓(ya)整流(liu)裝(zhuang)置,要對(dui)各(ge)級電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容器(qi)逐級放(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)后(hou),才能(neng)(neng)進(jin)行(xing)更改(gai)接(jie)(jie)線(xian)或結束試(shi)(shi)驗(yan),拆除接(jie)(jie)線(xian)。對(dui)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)力(li)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容器(qi)、發電(dian)(dian)(dian)(dian)(dian)(dian)(dian)機、變壓(ya)器(qi)等,必(bi)須(xu)(xu)先(xian)經(jing)適當的(de)(de)放(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)對(dui)試(shi)(shi)品進(jin)行(xing)放(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)。如(ru)果直(zhi)(zhi)接(jie)(jie)對(dui)地(di)放(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian),可(ke)能(neng)(neng)產生頻率(lv)高的(de)(de)振(zhen)蕩過電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya),對(dui)試(shi)(shi)品的(de)(de)絕緣有(you)危害。放(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)視試(shi)(shi)驗(yan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)高低和(he)試(shi)(shi)品的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容而定(ding),必(bi)須(xu)(xu)有(you)足(zu)夠的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)值和(he)熱容量。通常采用水電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu),電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)值大致上(shang)可(ke)為每千伏200~5000。放(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)器(qi)兩間的(de)(de)有(you)效(xiao)長度(du)(du)可(ke)參照高壓(ya)保護電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)器(qi)的(de)(de)長度(du)(du)l選用。放(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)棒的(de)(de)絕緣部(bu)分的(de)(de)長度(du)(du)l應(ying)符(fu)合(he)安全規(gui)程的(de)(de)規(gui)定(ding),并不小于放(fang)(fang)(fang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)器(qi)的(de)(de)有(you)效(xiao)長度(du)(du)。