Binciken juriya na moto: Nawa ne ake ɗaukar cancanta?
Menene ya kamata a yi la'akari da juriya na iskar stator na injin asynchronous mai hawa uku na al'ada dangane da iya aiki?(Game da yin amfani da gada da ƙididdige juriya dangane da diamita na waya, yana da ɗan rashin gaskiya.) Ga motocin da ke ƙasa da 10KW, multimeter kawai yana auna 'yan ohms. Don 55KW, multimeter yana nuna kaɗan daga cikin goma. Yi watsi da amsawar inductive a yanzu. Don motar da aka haɗa tauraro 3kw, multimeter yana auna juriya na juriya na kowane lokaci don zama kusa da 5 ohms (bisa ga sunan motar, halin yanzu: 5.5A. Power factor = 0.8. Ana iya ƙididdige cewa Z=40 ohms, R = 32 ohms). Bambancin da ke tsakanin su ma ya yi yawa.Daga farkon motar zuwa matakin farko na cikakken aiki, motar tana aiki na ɗan gajeren lokaci kuma zafin jiki ba shi da yawa. Bayan gudu na awa 1, zafin jiki na dabi'a yana tashi zuwa wani takamaiman matsayi, shin wutar lantarki zata ragu da yawa bayan awa daya?A fili babu!Anan, ina fata ƙwararrun abokan aikin lantarki za su iya gabatar da yadda kuke auna shi. Abokan da ke cikin rudani lokacin gyaran motoci za su iya raba yadda kuka fahimta?Ƙara hoto don gani:Ana auna juriyar juzu'i uku na motar kamar haka:1. Kunna yanki mai haɗawa tsakanin tashoshin mota.2. Yi amfani da ƙananan juriya na multimeter na dijital don auna juriya a farkon da ƙarshen iska uku na motar. A karkashin yanayi na al'ada, juriya na iska guda uku ya kamata ya zama daidai.Idan akwai kuskure, kuskuren ba zai iya zama fiye da 5%.3. Idan juriya na jujjuyawar motsi ya fi 1 ohm, ana iya auna shi tare da gada mai hannu ɗaya. Idan juriyar jujjuyawar motar ta gaza 1 ohm, ana iya auna shi da gada mai hannu biyu.Idan akwai babban bambanci a cikin juriya tsakanin motsi na motar, yana nufin cewa motar motar tana da gajerun hanyoyi, buɗaɗɗen da'irori, walda mara kyau da kurakurai a cikin yawan juyawa.4. Za'a iya auna juriya na insulation tsakanin windings da juriya na insulation tsakanin windings da harsashi:1) Ana auna motar 380V tare da megohmmeter tare da kewayon ma'auni na 0-500 megohms ko 0-1000 megohms.Its juriya na rufi ba zai iya zama kasa da 0.5 megohms.2) Yi amfani da megohmmeter tare da kewayon ma'auni na 0-2000 megohms don auna motar mai ƙarfin lantarki.Its juriya na rufi ba zai iya zama ƙasa da 10-20 megohms.