Isigaba sesi-3 – Iqondwa kanjani incazelo “yokwakhiwa kwekilasi II”

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Ukugcizelelwa lapha kuyingxenye yokwakhiwa kwento esebenza ngogesi, engahlangabezana nezidingo zokufakwa okuphindwe kabili noma ukufakwa okuqinisiwe. Ngakho-ke, into esetshenziswayo Yekilasi I futhi izoqukatha ukwakhiwa Kwekilasi II .Isibonelo: Ihhavini eboniswe emfanekisweni ongezansi isebenzisa igobolondo lensimbi kanye nephini lokushintsha lepulasitiki. Uma umsebenzisi ethinta inkinobho yokushintsha, ifindo lenziwe ngezinto ezivikelayo futhi alikwazi ukumiswa. Ukuvikela ngokumelene nokushaqeka kukagesi kungancika kuphela…

Isigaba sesi-3 – Iqondwa kanjani incazelo “yensiza yeklasi II”

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Into esetshenziswayo yekilasi II: into esetshenziswayo lapho ukuvikeleka kokushaqeka kukagesi kungancikile insulation eyisisekelo kuphela kodwa lapho kunikezwa khona izinyathelo zokuphepha ezengeziwe, njengokuthi double insulation noma reinforced insulation, akukho ukuhlinzekwa komhlaba ovikelayo noma ukuthembela ezimeni zokufakwa. QAPHELA 1 Isisetshenziswa esinjalo singaba ngolunye kulezi zinhlobo ezilandelayo:– into esetshenziswayo enendawo evalekile ehlala isikhathi eside neqhubekayo yezinto ezivalelayo ezimboza…

Isigaba sesi-3 – Iqondwa kanjani incazelo “yensiza yekilasi I”

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umshini kagesi wesigaba I: umshini lapho ukuvikeleka kokushaqeka kukagesi kungancikile ekufakeni izinto eziyisisekelo kuphela kodwa okuhlanganisa nesexwayiso sokuphepha esengeziwe, ngokuthi izingxenye ezifinyelelekayo eziqhutshwayo zixhunywe ku-conductor yomhlaba ovikelayo kuzintambo ezingaguquki zokufakwa ngaleyo ndlela. ukuthi izingxenye ezifinyelelekayo azikwazi ukuba bukhoma uma kwenzeka ukwehluleka kokufakwa okuyisisekeloQAPHELA Lokhu kunikezwa kuhlanganisa i-conductor yomhlaba evikelayo entanjeni yokuhlinzeka. Isibonelo: Ngokuyisisekelo, izinto ezisetshenziswayo…

Isigaba sesi-3 – Iqondwa kanjani incazelo “yensiza yekilasi 0I”

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Into esetshenziswayo yekilasi 0I: into esetshenziswayo enokufakwa okungenani okuyisisekelo kuyo yonke indawo futhi ehlanganisa itheminali yomhlaba kodwa enentambo yokuhlinzeka ngaphandle kwe-conductor yomhlaba kanye nepulaki ngaphandle kokuthintana komhlaba. Into esetshenziswayo inetheminali yokuxhuma i-conductor yangaphandle evikelayo (ikhondaktha yomhlaba ovikelayo), kodwa ayikho intambo yokuxhuma into esebenza ekhondathani eyisivikelo ezintamboni ezingaguquki, into esetshenziswayo ingase ibe nentambo noma isakhiwo ngaphakathi…

Isigaba sesi-3 – Iqondwa kanjani incazelo “yensiza yekilasi 0”

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QAPHELA izinto zikagesi zeSigaba 0 zinendawo ebiyelwe yezinto ezivalelayo ezingase zakhe ingxenye noma yonke into eyisisekelo, noma indawo ebiyelwe yensimbi ehlukaniswa nezingxenye ezibukhoma ngokufakwa okufanele. Uma into esetshenziswayo evalekile yezinto ezivikelayo inenhlinzeko yezingxenye zangaphakathi ze- earthing, ibhekwa njengento esetshenziswayo yekilasi I noma isisetshenziswa sekilasi 0I.Lolu hlobo lukagesi alunaso isisetshenziswa somhlaba esivikelayo, futhi ngesikhathi esifanayo, ungqimba…

Isigaba sesi-3 – Uyiqonda kanjani incazelo ye-“protective impedance”

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i-impedance yokuvikela: i-impedance exhunywe phakathi kwezingxenye ezibukhoma nezingxenye ezifinyelelekayo ezifinyelelekayo zezakhiwo zesigaba II ukuze okwamanje, ekusetshenzisweni okuvamile nangaphansi kwezimo ezingaba zephutha entweni, ikhawulelwe kunani eliphephile. Icala 1:Isimo sokuqala ngokuvamile yizimo ezithile ezidinga ukunikezwa kwamandla kagesi aphansi, njengemikhiqizo esebenza nge-adaptha. I-voltage ephumayo ye-adaptha yi-DC12V, DC24V noma i-DC5V. Lezi zingxenye ezinama-voltage aphansi ngokuvamile zingathintwa abasebenzisi ngenxa yokuthi…

Isigaba sesi-3 – Iqondwa kanjani incazelo ye-“functional insulation”

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i-functional insulation: ukwahlukanisa phakathi kwezingxenye ze-conductive zamandla ahlukene okudingeka kuphela ekusebenzeni kahle komshini. I-insulation esebenzayo isethwe ngenxa yezidingo zokusebenza zomshini. Emikhiqizweni kagesi, kufanele kube nezingxenye ze-conductive ezinamandla ahlukene (ama-voltage ahlukene). Uma i-voltage yawo wonke ama-conductor anamandla emkhiqizweni iyafana, into esetshenziswayo ayikwazi ukusebenza. Khona-ke, kukhona ukufakwa okusebenzayo phakathi kwezingxenye ezahlukene ze-conductive. Uma sicabanga ukuthi i-voltage elinganiselwe…

Isigaba sesi-3 – Iqondwa kanjani incazelo ye-“reinforced insulation”

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ukufakwa okuqinisiwe: ukufakwa okukodwa okufakwe ezingxenyeni ezibukhoma, okunikeza izinga elithile lokuvikela ekushayweni kukagesi okulingana nokufakwa kabili ngaphansi kwezimo ezishiwo kuleli zinga.Njengoba kukhonjisiwe ezithombeni ezimbili ezingezansi, isithombe esingakwesokunxele yisithombe sangemuva sesiqandisi. Ibhodi lesifunda ngaphakathi lingabonakala nge-grille yensimbi esithombeni kwesokunxele, futhi isithombe sangaphakathi isithombe esifanele. Kunezingxenye ezibukhoma ku-PCB, futhi umsebenzisi angakwazi ukuthinta i-grille. Umoya ophakathi kwegebe le-grille…

Isigaba sesi-3 – Iqondwa kanjani incazelo ye-“double insulation”

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double insulation: isistimu yokuhlukanisa ehlanganisa kokubili ukufakwa okuyisisekelo kanye nokufakwa okungeziwe Incazelo iwukwenza lula kuphela incazelo yokugquma okuyisisekelo kanye nokwahlukanisa okungeziwe ezingeni, kusetshenziswa igama elilodwa ukuchaza amagama amabili. Njengoba kukhonjisiwe emfanekisweni ongezansi, intambo yokunikezela inezingqimba ezimbili zokuvala, umgodla wocingo ongaphakathi kanye nomgodla wocingo omnyama ongaphandle, ochazwa ngokuthi ukufakwa kabili. Njengoba kukhonjisiwe ezithombeni ezimbili ezilandelayo(ifeni), umgodla…