Ithebula 17 kanye neThebula 18 le-IEC 60335-1
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i-supplementary insulation: i-insulation ezimele isetshenziswa ngaphezu kokufakwa okuyisisekelo, ukuze kuhlinzekwe ukuvikeleka ekushaqekeni kukagesi uma kwenzeka ukwehluleka kokufakwa kwesisekelo I-insulation engaphandle kwe-insulation eyisisekelo futhi ezimele ku-insulation eyisisekelo, futhi ngokuvamile ifinyeleleka kumsebenzisi. I-supplementary insulation, njengoba negama lisho, ingeziwe, futhi ibhekisela ekufakeni okungeziwe ekufakeni okuyisisekelo. Lokhu kuhilela isimiso esiyisisekelo saleli zinga, okungukuthi isimiso sokuvikela okuphindwe kabili. Kunoma iyiphi…
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…
isisekelo se-insulation: kanye ne-nbsp;i-insulation isetshenziswa ezingxenyeni eziphilayo ukuze kunikeze isivikelo esiyisisekelo ngokumelene nokushaqeka kukagesi Njengoba kukhonjisiwe esithombeni esingakwesokunxele ngezansi, isithombe sekhava engezansi yefeni, futhi isithombe esingakwesokudla isithombe esingenayo ikhava engezansi. Isikhumba socingo oluluhlaza nolunsundu ngaphakathi kwentambo yokuhlinzeka esithombeni esilungile singabhekwa njengokwahlukanisa okuyisisekelo. Ngesikhathi esifanayo, izikhumba zocingo ezimhlophe, ezibomvu nezimnyama ekushintsheni okuxhunywe kugobolondo elimnyama nazo zingahlulelwa…
Isigaba somthetho 8.1.1 sisho ukuthi uphenyo kufanele lusetshenziswe lapho into esetshenziswayo “isetshenziswa okuvamile”, kuyilapho isigatshana 8.1.5 sihlolwa ngaphambi kokufakwa. Imikhiqizo efana nalena, elethwa ngezingxenye ezimbalwa, ngokuvamile idinga ukufakwa endaweni. “Phila kanye ne-nbsp;izingxenye kanye ne-nbsp;ye kanye ne-nbsp;eyakhelwe ngaphakathi kanye ne-nbsp;imishini, kanye ne-nbsp;i-fixed ne-nbsp;imishini kanye ne-nbsp; kanye ne-nbsp;imishini kanye ne-nbsp;ilethiwe kanye ne-nbsp;ngaphakathi kanye ne-nbsp;hlukanisa futhi nbsp;amayunithi, kanye…
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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