Ukukhethwa kwabathintana nabo kuzokwenziwa ngokuhambisana nezidingo zemishini elawulwayo.Ngaphandle kokuthi i-voltage elinganiselwe yokusebenza izofana ne-voltage elinganiselwe yezinto ezishajwayo, izinga lokulayisha, isigaba sokusebenzisa, imvamisa yokusebenza, impilo yokusebenza, imodi yokufaka, usayizi nomnotho wempahla eshajwayo kuyisisekelo sokukhetha.
Oxhumana nabo basetshenziswa ochungechungeni nokuhambisana
Kunemishini eminingi kagesi eyimithwalo yesigaba esisodwa futhi, ngakho-ke, izigxobo eziningana ze-multipole contactors zingasetshenziswa ngokuhambisana.Njengesithando somlilo sokumelana, i-welding transformer, njll.Uma isetshenziswe ngokufana, i-contactor encane yamandla ingakhethwa. Kodwa-ke, kufanele kuqashelwe ukuthi ukushisa okuvunyelwene ngakho kwe-contactor ngemva kokuhambisana akulingani ngokuphelele nenani lezigxobo ezihambisanayo.Lokhu kungenxa yokuthi amanani okumelana welophu yokuxhumana esebenzayo, emile ingase ingalingani ngokuphelele, ukuze i-current egeleza nge-positive ayisakazwa ngokulinganayo.Ngakho-ke, i-current ingakhuphuka kuphela izikhathi ezingu-1.8 ngokuhambisana, futhi ngemva kokuba izigxobo ezintathu zihambisana, okwamanje kungandiswa kuphela ku-2 kuya ku-2.4 izikhathi.
Ukwengeza, kufanele kuphawulwe ukuthi ngenxa yokuthi othintana nabo bezigxobo abakwazi ukuxhunywa futhi banqanyulwe ngesikhathi esifanayo ngemva kokufana, ikhono elixhunyiwe nokuhlukanisa alikwazi ukuthuthukiswa.
Ngezinye izikhathi, izigxobo eziningana ze-contactor zingasetshenziswa ochungechungeni, ngenxa yokwanda kwekhefu lokuxhumana zingahlukanisa i-arc zibe izingxenye eziningi, ukuthuthukisa ikhono lokucima i-arc, nokusheshisa ukucinywa kwe-arc.Ngakho-ke, izigxobo eziningana zingandiswa ku-arc. uchungechunge, kodwa ayikwazi ukweqa i-voltage elinganisiwe yokufakwa kwe-contactor.Ukushisa okuvunyelwene ngakho kanye nesilinganiso sokusebenza samanje se-contactor ochungechungeni ngeke kushintshe.
Imithelela yemvamisa yokunikezwa kwamandla
Ngomjikelezo oyinhloko, ukuguqulwa kwemvamisa kuthinta umphumela wesikhumba, futhi umphumela wesikhumba ukhula ngemvamisa ephezulu.Emikhiqizweni eminingi, i-50 ne-60 Hz inomphumela omuhle ekukhuphukeni kwezinga lokushisa kwe-conductor circuit.Nokho, ku-coil yokukhanga, ukunakwa kufanele kukhokhwe.Idizayini engu-50 H izonciphisa ukuguquguquka kazibuthe komugqa kagesi ku-60 Hz, futhi ukumunca kuzoncishiswa.Ukuthi ukusetshenziswa kuncike emaphethelweni edizayini yayo.Ngokujwayelekile, umsebenzisi kungcono kakhulu ukukusebenzisa ngokwevelu yayo yokulinganisa nokuhleleka ngokuya ngemvamisa yamandla okusebenza.
Imiphumela yefrikhwensi yokusebenza
Inombolo yemijikelezo yokusebenza yehora yabathintana nabo inomthelela omkhulu ekulahlekelweni kokushiswa koxhumana nabo, ngakho-ke kufanele kuqashelwe ekukhethweni.I-frequency yokusebenza esebenzayo inikezwa kumingcele yezobuchwepheshe yama-contactors.Lapho imvamisa yokusebenza yangempela yemishini kagesi iphakeme kunenani elinikeziwe, othintana naye kufanele anciphise inani elincishisiwe.
Ukukhethwa kwezixhumi ze-AC zokulawula okokusebenza kukagesi okushisayo
Lolu hlobo lwemishini luneziko lokumelana, i-heater elawula izinga lokushisa, njll. Uhla lwamanje lokuguquguquka komthwalo onjalo luncane kakhulu, okungokuka-AC-1 ngokuya ngesigaba sokusetshenziswa.I-contactor ingakwazi ukulawula umthwalo onjalo kalula, futhi ukusebenza akuhlali njalo.Ngakho-ke, lapho ukhetha othintana naye, inqobo nje uma ukushisisa okuvunyelwene ngakho Ith ye-contactor ilingana noma ingaphezu kwezikhathi ezingu-1.2 ukusebenza kwamandla kagesi we-thermal. Isibonelo sokuqala: I-contactor ikhethiwe ukuze ilawule i-380V kanye ne-15KW yezigaba ezintathu ezimise okuka-Y HW.Isixazululo: qala ubale i-Ie yamanje yokusebenza elinganiselwe yesigaba ngasinye.I-Ith=1.2Ie=1.2×22.7=27.2A ngaleyo ndlela ikhetha noma yiluphi uhlobo yokuthintana nokushisa okuvunyelwene ngakho Ith≥27.2A.Isibonelo: CJ20-25, CJX2-18, CJX1-22, CJX5-22 namanye amamodeli.
Lawula ukukhethwa koxhumana nabo bemishini yokukhanyisa
Kunezinhlobo eziningi zemishini yokukhanyisa, izinhlobo ezahlukene zemishini yokukhanyisa, ukuqala kwamanje nesikhathi sokuqala nakho kuhlukile.Imithwalo enjalo isebenzisa isigaba se-AC-5a noma i-AC-5b.Uma isikhathi sokuqala sisifushane kakhulu, i-Ith yamanje yokushisa evunyelwene iyalingana. izikhathi ezingu-1.1 zokusebenza kwamandla emishini yokukhanyisa ie.Uma isikhathi sokuqala siside kancane futhi isilinganiso sesilinganiso siphansi, amandla okushisisa okuvunyelwene ngawo makhulu kunomsinga osebenzayo wezinto zokukhanyisa, bheka kuThebula 1. Ithebula 1 Umgomo wokukhetha we-contactor yokulawula imishini yokukhanyisa No. Igama lempahla yokukhanyisa iqala ukunikezwa kwamandla kwe-COS isikhathi sokuqalisa iminithi umgomo wokukhetha othintana naye
Isikhathi sokuthumela: Mar-01-2022
