Umgaqo wokhetho we-AC contactor

I-contactor isetyenziswa njengesixhobo sokutshintsha kunye nokucima umbane womthwalo. Ukukhethwa koqhagamshelwano kufuneka kuhlangabezane neemfuno zezixhobo ezilawulwayo. Ngaphandle kokuba i-voltage yokusebenza elinganisiweyo iyafana ne-voltage yokusebenza elinganisiweyo yesixhobo esilawulwayo, amandla omthwalo, udidi lokusetyenziswa, i-Mode yokulawula, i-frequency yokusebenza, ubomi bokusebenza, indlela yokufakela, ubungakanani bofakelo kunye noqoqosho sisiseko sokukhethwa. Imigaqo yokhetho yile ilandelayo:
(1) Inqanaba le-voltage ye-AC yoqhagamshelwano kufuneka ifane naleyo yomthwalo, kwaye uhlobo lwe-contactor lufanele lulungele umthwalo.
(2) Umbane obalwayo womthwalo kufuneka uhambelane nomgangatho womthamo we-contactor, oko kukuthi, i-current counted ingaphantsi okanye ilingana nomlinganiselo osebenzayo we-contactor. Ukutshintsha kwangoku kwe-contactor kukhulu kunokuqala komthwalo womthwalo, kwaye ukuphuka kwangoku kukhulu kunokophuka xa umthwalo usebenza. Ukubala kwangoku komthwalo kufuneka kuthathelwe ingqalelo indawo eyiyo yokusebenza kunye neemeko zokusebenza. Kumthwalo onexesha elide lokuqalisa, umsinga ophakamileyo wesiqingatha seyure awukwazi ukudlula umbane wokuvelisa ubushushu obuvunyelweneyo.
(3) Ukulinganisa ngokwexesha elifutshane eliguquguqukayo kunye nokuzinza kwe-thermal. Isigaba sesithathu sesetyhula esifutshane somgca akufanele sidlule i-dynamic kunye ne-thermal stable current evunyelwe yi-contactor. Xa usebenzisa i-contactor ukuphula i-short-circuit current, umthamo wokuqhawula umnxeba kufuneka uhlolwe kwakhona.
(4) I-voltage elinganisiweyo kunye nomsinga wekhoyili yokutsala umnxeba kunye nenombolo kunye nomthamo wangoku wabafowunelwa abancedisayo uya kuhlangabezana neemfuno zocingo zesekethe yokulawula. Ukuqwalasela ubude bomgca oqhagamshelwe kwisiphaluka solawulo lwe-contactor, ixabiso le-voltage yokusebenza elicetyiswayo ngokubanzi, i-contactor kufuneka ikwazi ukusebenza kwi-85 ukuya kwi-110% yombane olinganisiweyo. Ukuba umgca ude kakhulu, i-coil ye-contactor ayinakuphendula kumyalelo wokuvala ngenxa yokuhla kwamandla amakhulu; ngenxa yesakhono esikhulu somgca, isenokungasebenzi kumyalelo wokuquba.
(5) Khangela i-frequency yokusebenza evumelekileyo yoqhagamshelwano ngokwenani lemisebenzi. Ukuba i-frequency yokusebenza idlula ixabiso elichaziweyo, i-current rated current kufuneka iphindwe kabini.
(6) Iiparamitha zamacandelo okukhusela okufutshane kufuneka zikhethwe ngokubambisana neeparitha zomnxeba. Ukukhetha, nceda ubhekisele kwincwadana yekhathalogu, enika ngokubanzi itafile ehambelanayo yabafowunelwa kunye neefuse.
Intsebenziswano phakathi kwe-contactor kunye ne-air circuit breaker kufuneka imiselwe ngokwe-coefficient overload kunye ne-short circuit protection current coefficient of the air circuit breaker. Umjikelo wokufudumeza ovunyelweneyo we-contactor kufuneka ube ngaphantsi kwe-overload yangoku ye-air circuit breaker, kwaye i-on and off current ye-contactor kufuneka ibe ngaphantsi kwe-short circuit current yokukhusela i-circuit breaker, ukwenzela ukuba i-breaker circuit inokukhusela. umnxibelelanisi. Ngokwesiqhelo, i-contactor iyavuma ukuba umlinganiselo wokufudumeza kwangoku ukuya kwireyithi yokusebenza yangoku uphakathi kwe-1 kunye ne-1.38 kwinqanaba lombane, ngelixa i-breaker circuit inexesha elininzi eliguquguqukayo i-coefficient parameters ye-coefficient, eyahlukileyo kwiindidi ezahlukeneyo ze-breaker circuit. Kunzima ukusebenzisana phakathi kwezi zimbini Kukho umgangatho, ongenakho ukwenza itafile ehambelanayo, kwaye ifuna ukubalwa kwemali yokwenene.
(7) Umgama wofakelo lwee-contacts kunye namanye amacandelo kufuneka uhambelane nemigangatho yesizwe efanelekileyo kunye neenkcukacha, kunye nokugcinwa kunye nemigama yeentambo kufuneka ithathelwe ingqalelo.
3. Ukukhethwa kwabafowunelwa be-AC phantsi kwemithwalo eyahlukeneyo
Ukuze ugweme ukudibanisa ukudibanisa kunye nokuchithwa kwe-contactor kunye nokwandisa ubomi benkonzo ye-contactor, i-contactor kufuneka igweme ubuninzi bangoku bokuqalisa komthwalo, kunye nokuqwalasela izinto ezingathandekiyo ezifana nobude bexesha lokuqala, ngoko kuyimfuneko. ukulawula umthwalo we-contactor kunye nokucima. Ngokweempawu zombane zomthwalo kunye nemeko yangempela yenkqubo yamandla, i-current-stop stop current yemithwalo eyahlukeneyo ibalwa kwaye ilungiswe.