Ithebula 17 kanye neThebula 18 le-IEC 60335-1
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ukwakhiwa kwesigaba III: ingxenye yesisetshenziswa esivikela ukushaqeka kukagesi sincike ekuphepheni kwamandla kagesi aphansi kakhulu nalapho ama-voltage aphezulu kunalawo okuphepha kwamandla kagesi aphansi kakhulu angakhiqizi.Qaphela ukwahlukanisa okuyisisekelo kungase kudingeke ngaphezu kokuphakelwa kwa-SELV. Bheka ku-8.1.4.QAPHELA 2 Uma ingxenye eyinhloko yomshini isebenza e-SELV futhi ilethwa kanye neyunithi yokuphakelwa kukagesi ekhiphekayo khona-ke le ngxenye eyinhloko yale ngxenye eyinhloko ibhekwa…
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…
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…
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…
safety extra-low voltage: voltage not exceeding 42 V between conductors and between conductors and earth, the no-load voltage not exceeding 50 V When safety extra-low voltage is obtained from the supply mains, it is to be through a safety isolating transformer or a convertor with separate windings, the insulation of which complies with double insulation…
functional insulation as well as other insulation exists on circuit boards. Typically, the surface environment of a circuit board is determined to be either Pollution degree 3 or pollution degree 2.If the circuit board is mounted in an electrical box and sealed with a solid sealant, the sealing will look as follows: What should be…
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