I-Thermal relay isetshenziselwa kakhulu ukulayisha ngokweqile ukuvikela i-asynchronous motor.Umgomo wayo wokusebenza ukuthi ngemuva kokuthi i-overload yamanje idlule entweni eshisayo, ishidi lensimbi eliphindwe kabili liyagoba ukuze liqhube umshini wokuthintana, ukuze kunqamulwe isekethe yokulawula imoto futhi kubone ukucisha kwemoto, futhi kudlale indima. yokuvikela ukulayisha ngokweqile.Ngokunikezwa isikhathi eside sokudlulisa ukushisa okudingekayo ngesikhathi sokugoba okushisayo kwepuleti le-bimmetal, i-thermal relay ayikwazi ukusetshenziswa njengesivikelo sesifunda esifushane, kodwa kuphela njengokuvikela ukugcwala kokuvikela ukulayishwa kokudluliswa kokushisa okungaphezulu.
Lapho i-relay ye-thermal isetshenziselwa ukulayisha ngokweqile ukuvikela injini, ukuxhuma into eshisayo kanye ne-stator winding ye-motor ochungechungeni, ukuthintana okuvamise ukuvala kwe-thermal relay kuxhunywe kumjikelezo wokulawula wekhoyili kagesi yesixhumi se-AC, futhi i-knob yokulungisa yamanje yokusetha ilungiswa ukuze yenze i-herringbone lever ibanga elifanele ukusuka ku-push rod.Lapho umshini usebenza ngokujwayelekile, i-current ngokusebenzisa isici esishisayo yi-current rated of the motor.Lapho isici esishisayo sifudumala, ishidi lensimbi eliphindwe kabili liyagotshwa ngemva kokufudumeza, ukuze induku yokusunduza ivele ixhumane ne-herringbone lever, kodwa ayikwazi ukusunduza induku ye-herringbone. injini isebenza ngokujwayelekile.
Uma isimo se-motor overload, i-current in the winding inyuka, ngokusebenzisa i-current ku-thermal relay element izinga lokushisa kwe-bimetallic likhuphuka phezulu, i-goba degree, ikhuthaza i-herringbone lever, i-herringbone lever push ngokuvamile ivala othintana naye, yenza othintana naye anqanyulwe futhi anqamule i-ac. I-contactor coil circuit, yenza i-contactor release, inqamule amandla e-motor, i-motor stop futhi ivikelwe.
Ezinye izingxenye ze-thermal relay zimi kanje: i-herringbone lever ingalo yesokunxele yenziwe nge-bimetallic, lapho izinga lokushisa elizungezile lishintsha, isifunda esikhulu sizokhiqiza ukugoba okuthile, bese ingalo yesobunxele ibheke ohlangothini olufanayo, ukuze ibanga phakathi kwe-herringbone lever. futhi induku yokusunduza ihlala ingashintshile, qinisekisa ukunemba kwesenzo sokudlulisa okushisayo.Lesi senzo sibizwa ngokuthi isenzo sokunxeshezelwa kwezinga lokushisa.
I-Screw 8 iyisikulufu sokulungisa esinokusetha kabusha okuvamile okuvalekile. Uma indawo yesikulufu ingakwesokunxele, ngemva kokugcwala kwenjini, ukuthintana okuvamise ukuvaleka kuyanqanyulwa, ngemva kokuma kwenjini, i-hot relay bimetallic sheet ukupholisa kabusha. abathintwayo abavamise ukuvaleka bazosethwa kabusha ngokuzenzakalelayo ngaphansi kwesenzo sentwasahlobo.Kuleli qophelo, i-relay ye-thermal isethwe kabusha ngokuzenzakalelayo.Lapho isikulufu sizungeziswa ngokuphikisana newashi endaweni ethile, uma injini igcwele kakhulu, ukuxhumana okuvamise ukuvaleka kwe-thermal. i-relay inqanyuliwe.Othintana nabo abahambayo bazofinyelela endaweni entsha yebhalansi kwesokudla.Othintana naye onyakazayo akanakusethwa kabusha ngemva kokuba injini ivaliwe.Inkinobho yokusetha kabusha kufanele icindezelwe ngaphambi kokuba othintana naye asethwe kabusha.Kuleli qophelo, i-relay eshisayo esimweni sokusetha kabusha mathupha.Uma ukulayishwa kwe-motor kunephutha, ukuze ugweme ukuqala kalula injini futhi, i-relay edluliselwe ezishisayo kufanele isebenzise imodi yokusetha kabusha okwenziwa ngesandla.Ukulungisa ukudlulisa okushisayo ukusuka kumodi yokusetha kabusha ngesandla kuya kumodi yokusetha kabusha okuzenzakalelayo, kalula nje isikulufa isikulufu sokulungisa kabusha ngokwewashi siye endaweni efanele.
Isikhathi sokuthumela: Mar-28-2022
