The Insulation resistance tester ndiyoyenera kuyeza kukana kwa zida zosiyanasiyana zotsekera komanso kukana kwa ma transfoma, ma mota, zingwe ndi zida zamagetsi kuti zitsimikizire kuti zida izi, zida zamagetsi ndi mizere zimagwira ntchito bwino ndikupewa ngozi monga kugwedezeka kwamagetsi. ovulala ndi kuwonongeka kwa zida.
Mavuto omwe amafala kwambiri pa insulation resistance tester ndi awa:
1. Poyesa kukana kwa capacitive katundu, pali ubale wotani pakati pa kutulutsa kwaposachedwa kwaposachedwa kwa tester insulation resistance ndi data yoyezedwa, ndipo chifukwa chiyani?
Kutulutsa kwaposachedwa kwaposachedwa kwa tester insulation resistance kumatha kuwonetsa kukana kwamkati kwa gwero lamphamvu kwambiri.
Zinthu zambiri zoyezera kutchinjiriza ndi katundu wa capacitive, monga zingwe zazitali, ma mota okhala ndi ma windings ambiri, thiransifoma, etc. Choncho, pamene chinthu choyezera chimakhala ndi capacitance, kumayambiriro kwa mayesero, gwero lapamwamba lamagetsi mu tester yotsutsa liyenera kulipira. capacitor kudzera kukana kwake mkati, ndipo pang'onopang'ono perekani voteji ku linanena bungwe oveteredwa mkulu voteji mtengo wa kutchinjiriza kukana tester.Ngati mtengo wa capacitance wa chinthu choyezedwa ndi chachikulu, kapena kukana kwamkati kwa gwero lamphamvu lamagetsi kuli kwakukulu, njira yolipirira idzatenga nthawi yayitali.
Kutalika kwake kungadziwike ndi katundu wa R ndi C (mu masekondi), mwachitsanzo t = R * C katundu.
Choncho, panthawi ya mayesero, katundu wa capacitive ayenera kulipira ku voteji yoyesera, ndipo kuthamanga kwa DV / DT kuli kofanana ndi chiŵerengero cha kulipira panopa I ndi katundu wa capacitance C. Ndiwo DV / dt = I / C.
Choncho, kukana kwamkati kumakhala kochepa kwambiri, ndikokulirapo kwa ndalama zolipiritsa, ndipo mofulumira komanso mokhazikika zotsatira zake zimakhala.
2. Kodi "g" kumapeto kwa chida ndi chiyani?M'malo oyesera amagetsi apamwamba komanso kukana kwambiri, chifukwa chiyani chidacho chimalumikizidwa ndi "g" terminal?
Mapeto a "g" a chidacho ndi chotchinga chotchinga, chomwe chimagwiritsidwa ntchito kuthetsa chikoka cha chinyezi ndi dothi m'malo oyesera pazotsatira zoyezera.Mapeto a "g" a chipangizocho ndikudutsa mpweya wotuluka pamwamba pa chinthu choyesedwa, kuti mpweya wotuluka usadutse muyeso wa chipangizocho, ndikuchotsa cholakwika chomwe chimabwera chifukwa cha kutayikira kwapano.Poyesa kukana kwakukulu, G end iyenera kugwiritsidwa ntchito.
Nthawi zambiri, g-terminal imatha kuganiziridwa ikakhala yoposa 10g.Komabe, kukana uku sikuli kotheratu.Ndi yoyera komanso yowuma, ndipo kuchuluka kwa chinthu chomwe chiyenera kuyezedwa ndi chaching'ono, kotero chikhoza kukhala chokhazikika popanda kuyeza 500g kumapeto kwa g;M'malo onyowa komanso akuda, kukana kochepa kumafunikiranso g terminal.Mwachindunji, ngati zikuwoneka kuti zotsatira zake zimakhala zovuta kuti zikhale zokhazikika poyesa kukana kwakukulu, g-terminal ikhoza kuganiziridwa.Kuphatikiza apo, ziyenera kudziwidwa kuti chotchinga chotchinga G sichimalumikizidwa ndi chotchinga chotchinga, koma cholumikizidwa ndi insulator pakati pa L ndi E, kapena mu waya wamitundu yambiri, osati mawaya ena omwe amayesedwa.
3. Chifukwa chiyani ndikofunikira kuyeza osati kukana koyera kokha, komanso kuchuluka kwa mayamwidwe ndi polarization index poyezera kutsekereza?
PI ndiye polarization index, yomwe imatanthawuza kufananiza kwa kukana kwa insulation mu mphindi 10 ndi mphindi imodzi panthawi yoyeserera;
DAR ndiye chiŵerengero cha mayamwidwe a dielectric, chomwe chimatanthawuza kufananitsa pakati pa kukana kwa insulation mu mphindi imodzi ndi kuti mu 15s;
Mu kuyesa kwa kutchinjiriza, kukana kwamphamvu pa nthawi inayake sikungathe kuwonetsa bwino momwe ntchito yotchingira imagwirira ntchito.Izi ndichifukwa chazifukwa ziwiri izi: kumbali imodzi, kukana kwazitsulo zofananirako kumagwira ntchito yaying'ono pomwe voliyumu ndi yayikulu, komanso yayikulu pomwe voliyumuyo ili yaying'ono.Kumbali inayi, pali njira zoyamwitsa ndi polarization pazida zotsekera pamene magetsi apamwamba agwiritsidwa ntchito.Chifukwa chake, dongosolo lamagetsi limafuna kuti chiŵerengero cha mayamwidwe (r60s mpaka r15s) ndi polarization index (r10min mpaka r1min) ziyesedwe mu kuyesa kwa insulation ya thiransifoma yayikulu, chingwe, mota ndi zina zambiri, ndipo momwe kutchinjirizira kumatha kuyesedwa ndi izi data.
4. Chifukwa chiyani mabatire angapo amagetsi oletsa kukana magetsi amatha kupanga magetsi okwera kwambiri a DC?Izi zimachokera pa mfundo ya kutembenuka kwa DC.Pambuyo pokonza dera lowonjezera, magetsi otsika amakwezedwa mpaka pamagetsi apamwamba a DC.Ngakhale kuti magetsi opangidwa ndi okwera kwambiri ndi apamwamba, mphamvu zotulutsa ndizochepa (zochepa mphamvu ndi zochepa zamakono).
Zindikirani: ngakhale mphamvuyo ndi yaying'ono kwambiri, sikoyenera kukhudza kafukufuku woyesera, padzakhalabe kuyamwa.
Nthawi yotumiza: May-07-2021
