三倍頻(pin)(pin)試(shi)(shi)(shi)驗(yan)(yan)(yan)儀是(shi)(shi)為了(le)滿(man)足GB1094.3—85、GB1207和(he)電氣設(she)備預(yu)防性試(shi)(shi)(shi)驗(yan)(yan)(yan)規程—1995中三倍頻(pin)(pin)感(gan)(gan)應(ying)耐壓試(shi)(shi)(shi)驗(yan)(yan)(yan)和(he)局放試(shi)(shi)(shi)驗(yan)(yan)(yan)而設(she)計(ji)。 變(bian)(bian)壓器、互感(gan)(gan)器感(gan)(gan)應(ying)耐壓試(shi)(shi)(shi)驗(yan)(yan)(yan)是(shi)(shi)檢驗(yan)(yan)(yan)該產(chan)品(pin)是(shi)(shi)否(fou)(fou)符合(he)國家標(biao)準的(de)一項重(zhong)要(yao)試(shi)(shi)(shi)驗(yan)(yan)(yan)。繞(rao)組的(de)層間(jian)、匝(za)間(jian)、段及相間(jian)絕(jue)緣的(de)縱絕(jue)緣感(gan)(gan)應(ying)試(shi)(shi)(shi)驗(yan)(yan)(yan)，是(shi)(shi)考(kao)驗(yan)(yan)(yan)繞(rao)組是(shi)(shi)否(fou)(fou)符合(he)要(yao)求的(de)一個重(zhong)要(yao)項目。為了(le)提(ti)高繞(rao)組試(shi)(shi)(shi)驗(yan)(yan)(yan)電壓，使變(bian)(bian)壓器或互感(gan)(gan)器的(de)鐵芯(xin)又不致(zhi)于(yu)過飽和(he)導(dao)致(zhi)勵磁電流(liu)過大，因(yin)此要(yao)使試(shi)(shi)(shi)驗(yan)(yan)(yan)頻(pin)(pin)率提(ti)高，一般為100H