Ma "stator windings" ema "motor-resistant" ane matambudziko e "short-circuit", anosanganisira "interphase short-circuit" (three-phase kana two-phase short-circuit) uye "inter-turn short-circuit", izvo zvinowanzokonzerwa nekukuvara kwe "insulation". Kana paine mamiriro ezvinhu akadai, matanho akakodzera anofanira kutorwa kuti agadziriswe kudzivirira kukuvara kwemota kana njodzi dzekuchengetedza.
Kurapa kweinterphase short circuit: Kana interphase short circuit ikaitika, nekuda kwekudzikira kwehuwandu hwekutenderera uye kuchinja kwekutsvedza, kupindira kwemota kunodzikira, uye simba rinopinda kubva kumagetsi rinokwira nekukurumidza. Kuti kudzivirira kuwanda kwemota uye kukuvara kwekumonera, basa rekugadzirisa rinowanzoitwa nderekudzima simba nekukurumidza, sekudzima circuit breaker kana fuse. Kana kurapwa kunonoka, mawindings anogona kukuvara. Kana paine two-phase kana three-phase short circuit, kana nzvimbo yephase short circuit point yega yega isingaenderane, zvinogona kutungamira kukushanda kwemota isina kuenzana, negative sequence current nezvimwe zvinhu zvisina kujairika, izvo zvinokanganisa mashandiro uye hupenyu hwemota.
Kurapa kweInterturn short circuit: interturn short circuit zvinoreva kuitika kweshort circuit pakati pema coils ari muwinding imwe chete. Izvi zvinogona kukonzera ruzha rwemota rusina kujairika uye kudedera. Nzira yekurapa inonyanya kugadzirisa mota nekugadzirisa kana kutsiva chikamu chakakuvara chewinding. Panguva imwe chete, mamwe mawindings anofanirawo kuongororwa kuti ave nechokwadi chekuti hapana mamwe matambudziko anogona kuitika.
Zvinofanira kucherechedzwa kuti interphase short circuit yemota isingaputike ndiyo yakanyanya kuipa, kunyanya kana ikaitika pakupera kwe stator winding. Kana winding yangopfupikiswa pakati pema turns, ma turns akakuvara anopisa nekukurumidza, izvo zvinogona kukonzera kukuvara kwe insulation kana kutopera simba. Pamusoro pezvo, mota inogona kuburitsa ruzha rusina kujairika, rwuri chiratidzo chiri pachena.
Kazhinji, kana kutenderedzwa kwemota yemagetsi isingaputike kuri kupfupika, danho rekutanga nderekudzima magetsi nekukasika kudzivirira kukuvara kwemota kana matambudziko ekuchengetedza. Mushure meizvozvo, kuongorora nekungwarira kunodiwa kugadzirisa chikamu chakakuvara chekutenderedzwa uye kuona kuti mota yadzoka pakushanda kwayo. Kana mamiriro acho akanyanya kuipa, zvingada kugadziriswa kwakadzama uye kuongororwa nenyanzvi kuti ive nechokwadi chekuti mota inoshanda uye yakachengeteka. Panguva imwe chete, kuyedzwa nguva dzose kwekudzivirira kupisa kwakakoshawo kudzivirira matambudziko ekufamba kwenguva pfupi.
Nguva yekutumira: Nyamavhuvhu-27-2023