Pamene loop resistance tester (yomwe imatchedwanso kuti contact resistance tester) yopangidwa molingana ndi mfundo yachikhalidwe yoyeserera idayesedwa m'munda, zidapezeka kuti panali vuto wamba.Pamene chigawo cholumikizira magetsi cha tester sichikukhudzana bwino kapena kutseguka, woyesayo awonetsanso mtengo, ndipo izi zidzachitika:
HV HIPOT GDHL-200A/100A Automatic Loop Resistance Tester
(1) Vuto lamagetsi ndilotseguka, ndipo palibe chosokoneza champhamvu chamagetsi pamalo oyesera.Pachifukwa ichi, popeza kuyika kwa voteji yosiyanitsa ndi amplifier kwenikweni ndi 0, mtengo woyesera womwe umawonetsedwa ndi chida uli pafupi ndi 0. Ngati woyesayo ali ndi chidziwitso chokwanira choyesa kumunda, akhoza kuweruza kuti mzere woyesera wamagetsi a chida. dera ndi zachilendo ndi kubwerera ku voteji chida.Njira yoyesera yolakwika ikachotsedwa, zotsatira zomaliza zolondola zitha kupezeka.
(2) Kulumikizana kwa dera lamagetsi ndikovuta.Nthawi zambiri, ma terminals a wowononga dera amatulutsa filimu ya oxide kapena filimu yamafuta panja pa terminal pambuyo pogwira ntchito nthawi yayitali.Pamene ma voltage test clamps a ma circuit resistors amangiriridwa pazitsulo zoterezi, kukhudzana kosauka kumatheka.Pamene voteji test clip palokha imapanganso kukana kukhudzana, kukhudzana kukana mtengo ndi chimodzimodzi kukana mtengo wa voteji zitsanzo dera.zidzakhudza kwambiri zotsatira za mayeso.
(3) Voliyumu yozungulira ndi yotseguka kapena kukhudzana kumakhala koyipa (nthawi yotseguka, zitha kuwoneka kuti kukana r1 kulibe malire), ndipo pali kusokoneza kwamphamvu kwamagetsi pamalo oyesera, monga basi yamoyo. .Panthawiyi, basi yamoyo imadutsa pa capacitor ndi mpweya monga sing'anga, kusokoneza mizere iwiri yoyesera yamagetsi ya tester.Chifukwa cha kusokoneza, mizere yopezera voteji ya loop resistance tester ndi iwiri.Kusiyana kwamtundu wamagetsi kumawonekera kumapeto.
Nthawi yotumiza: May-23-2022