Hambisa izandla zakho ezincane futhi uhlale kude nokwehluleka kwezimoto okucasulayo?

Hambisa izandla zakho ezincane futhi uhlale kude nokwehluleka kwezimoto okucasulayo?

1. Injini ayikwazi ukuqalwa

1. Injini ayijiki futhi akukho msindo.Isizathu siwukuthi kunesekhethi evulekile yezigaba ezimbili noma ezintathu kugesi wemoto noma ukujikajika.Okokuqala hlola i-voltage yokuhlinzeka.Uma kungekho i-voltage ngezigaba ezintathu, iphutha likumjikelezo;uma ama-voltage ezigaba ezintathu alinganisela, iphutha likumoto ngokwayo.Ngalesi sikhathi, ukumelana kwezigaba ezintathu ze-motor kungalinganiswa ukuze kutholakale ama-windings anesigaba esivulekile.

2. Injini ayijiki, kodwa kunomsindo othi “humming”.Linganisa itheminali yemoto, uma i-voltage yezigaba ezintathu ibhalansisiwe futhi inani elilinganiselwe lingabhekwa njengokulayishwa ngokweqile okukhulu.

Izinyathelo zokuhlola yilezi: khipha kuqala umthwalo, uma isivinini nomsindo we-motor kujwayelekile, kungahlulelwa ukuthi ukulayisha ngokweqile noma ingxenye yemishini yomthwalo inephutha.Uma namanje ingajiki, ungakwazi ukuvula i-motor shaft ngesandla.Uma iqine kakhulu noma ingakwazi ukujika, kala umthamo wezigaba ezintathu.Uma i-curse yezigaba ezintathu ilinganisela, kodwa inkulu kunevelu elinganiselwe, kungenzeka ukuthi ingxenye engumshini yenjini ibambekile kanye ne-motor Ukuntuleka kwamafutha, ukugqwala noma umonakalo omkhulu, ikhava yokugcina noma ikhava yamafutha efakwe ngokunganaki kakhulu, i-rotor kanye ne-internal bore kushayisana (okubizwa nangokuthi ukushanela).Uma kunzima ukuguqula i-motor shaft ngesandla i-engeli ethile noma uma uzwa umsindo wezikhathi ezithile othi "chacha", kungabhekwa njengokushanela.

Izizathu yilezi:

(1) Igebe phakathi kwamaringi angaphakathi nangaphandle ensimbi likhulu kakhulu, futhi ukuthwala kudinga ukushintshwa.

(2) Igumbi lokuthwala (imbobo enembobo) likhulu kakhulu, futhi ububanzi bembobo engaphakathi bukhulu kakhulu ngenxa yokuguga kwesikhathi eside.Isinyathelo esiphuthumayo siwukuba ungqimba lwensimbi lube nge-electroplate noma wengeze umkhono, noma ubhontshise amaphuzu amancane odongeni lwegumbi lokuthwala.

(3) I-shaft igobile futhi isembozo sokugcina siyagqokwa.

3. I-motor ijikeleza kancane futhi ihambisana nomsindo othi "humming", futhi i-shaft iyandindizela.Uma i-current elinganisiwe yesigaba esisodwa ingu-zero, kanti i-current yezinye izigaba ezimbili idlula kakhulu i-current rated, kusho ukuthi ukusebenza kwezigaba ezimbili.Isizathu siwukuthi isigaba esisodwa sesekhethi noma ukunikezwa kwamandla kuvuliwe noma isigaba esisodwa sokuhamba kwezimoto sivuliwe.

Lapho isigaba esisodwa semoto encane sivulekile, singahlolwa nge-megohmmeter, i-multimeter noma isibani sesikole.Uma uhlola i-motor ngenkanyezi noma uxhumano lwe-delta, amalunga ama-windings ezigaba ezintathu kufanele ahlakazwe, futhi isigaba ngasinye kufanele silinganiswe ngesifunda esivulekile.Iningi lama-windings amamotho aphakathi nendawo asebenzisa izintambo eziningi futhi axhunywe ngokuhambisana emagatsheni amaningi.Kunzima kakhulu ukuhlola ukuthi izintambo ezimbalwa ziphukile noma igatsha elihambisanayo linqanyuliwe.Indlela yokulinganisa yamanje yezigaba ezintathu kanye nendlela yokumelana ivame ukusetshenziswa.Ngokuvamile, lapho umehluko phakathi kwamanani wesigaba sesithathu (noma ukumelana) kungaphezu kuka-5%, isigaba esinomthamo omncane (noma ukumelana okukhulu) yisigaba sesifunda esivulekile.

Ukuzijwayeza kufakazele ukuthi iphutha le-open-circuit yenjini lenzeka kakhulu ekugcineni kokusonta, ijoyinti noma umthofu.

2. I-fuse iyashaywa noma i-relay eshisayo iyanqanyulwa lapho iqala

1. Izinyathelo zokuxazulula inkinga.Hlola ukuthi umthamo wefuse ufanelekile yini, uma umncane kakhulu, faka ofanele bese uzama futhi.Uma i-fuse iqhubeka nokuvunguza, hlola ukuthi ibhande lokushayela liqine kakhulu noma umthwalo mkhulu kakhulu, kungakhathaliseki ukuthi kukhona isifunda esifushane kumjikelezo, nokuthi i-motor ngokwayo ifushane noma iphansi.

2. Indlela yokuhlola iphutha eliphansi.Sebenzisa i-megohmmeter ukukala ukumelana nokufakwa kwe-motor majika ukuya phansi.Uma ukumelana nokufakwa kwe-insulation kungaphansi kuka-0.2MΩ, kusho ukuthi ukujikajika kuswakeme kakhulu futhi kufanele komiswe.Uma ukumelana kungu-zero noma isibani sokulinganisa siseduze nokukhanya okuvamile, isigaba sisekelwe.Ukuma phansi okumazombezombe kuvamise ukwenzeka lapho kuphuma khona injini, imbobo yokungena yentambo kagesi noma i-slot yesandiso esimazombezombe.Esimweni sokugcina, uma kutholakala ukuthi iphutha lomhlabathi alibi kakhulu, i-bamboo noma iphepha le-insulating lingafakwa phakathi kwe-stator core kanye ne-winding.Ngemuva kokuqinisekisa ukuthi akukho sisekelo, singasongwa, sipendwe ngopende we-insulating futhi somiswe, futhi siqhubeke sisetshenziswa ngemva kokudlulisa ukuhlolwa.

3. Indlela yokuhlola yokuvala iphutha le-short-circuit.Sebenzisa i-megohmmeter noma i-multimeter ukukala ukumelana nokufakwa phakathi kwanoma yiziphi izigaba ezimbili emigqeni ehlukene yokuxhuma.Uma isondele nakuziro ngaphansi kuka-0.2Mf, kusho ukuthi iyisekhethi emfushane phakathi kwezigaba.Linganisa imisinga yama-winding amathathu ngokulandelana, isigaba esinamandla amakhulu kunawo wonke yisigaba sesekhethi emfishane, kanti umtshina wesiyingi esifushane nawo ungasetshenziswa ukuhlola i-interphase kanye ne-inter-turn short circuits of the windings.

4. Indlela yokwahlulela ye-stator egoqa ikhanda nomsila.Lapho ulungisa futhi uhlola i-motor, kuyadingeka ukuhlola kabusha ikhanda nomsila we-stator winding ye-motor lapho i-outlet ihlakazeka futhi ikhohliwe ukuthi ibhalwe noma ilebula yasekuqaleni ilahlekile.Ngokuvamile, indlela yokuhlola i-residual magnetism yokuhlola, indlela yokuhlola yokungeniswa, indlela ye-diode ye-diode kanye nendlela yokuqinisekisa eqondile yomugqa wokushintsha ingasetshenziswa.Izindlela ezimbalwa zokuqala zonke zidinga amathuluzi athile, futhi isilinganisi kufanele sibe nolwazi oluthile olusebenzayo.Umthetho wokuqinisekisa oqondile wokushintsha ikhanda lentambo ulula, futhi uphephile, uthembekile futhi unembile.Sebenzisa i-ohm block ye-multimeter ukuze ulinganise ukuthi yiziphi iziphetho zezintambo ezimbili eziyisigaba esisodwa, bese umaka ngokungafanele ikhanda nomsila we-stator winding.Amakhanda amathathu (noma imisila emithathu) yezinombolo ezimakiwe zixhunywe kumjikelezo ngokulandelana, futhi imisila emithathu esele (noma amakhanda amathathu) ixhunywe ndawonye.Qala injini ngaphandle komthwalo.Uma ukuqala kuhamba kancane futhi umsindo uphezulu kakhulu, kusho ukuthi ikhanda nomsila wesigaba esisodwa sokujika kuyahlehla.Ngalesi sikhathi, amandla kufanele anqunywe ngokushesha, isikhundla sesixhumi sesinye sezigaba kufanele siguqulwe, bese amandla kufanele avulwe.Uma kusafana, kusho ukuthi isigaba sokushintsha asihlehlisiwe.Hlehlisa ikhanda nomsila walesi sigaba, bese ushintsha ezinye izigaba ezimbili ngokushintshana ngendlela efanayo kuze kube yilapho umsindo wokuqala wemoto ujwayelekile.Le ndlela ilula, kodwa kufanele isetshenziswe kuphela kuma-motor amancane naphakathi avumela ukuqala okuqondile.Le ndlela ayikwazi ukusetshenziselwa izinjini ezinomthamo omkhulu ongavumeli ukuqala okuqondile.