Kupititsa patsogolo Chitetezo cha GFCI Kudzera mu UL 943

Chiyambire kufunikira kwake koyamba zaka 50 zapitazo, Ground Fault Circuit Interrupter (GFCI) yakhala ikukonzanso zambiri kuti iwonjezere chitetezo cha ogwira ntchito.Zosinthazi zidalimbikitsidwa ndi zomwe mabungwe monga Consumer Products Safety Commission (CPSC), National Electrical Manufacturers Association (NEMA), ndi Underwriters Laboratories.

Imodzi mwamiyezo iyi, UL 943, imapereka zofunikira zenizeni za zosokoneza zoyendera pansi zomwe zimatsatira ma code oyika magetsi aku Canada, Mexico, ndi United States.Mu June 2015, UL inasintha mfundo zawo za 943 kuti zifunikire kuti mayunitsi onse omwe adayikidwa kokhazikika (monga zotengera) aphatikizepo ntchito yowunika.Opanga adatha kugulitsa zinthu zomwe zidalipo kwa makasitomala awo, ndi cholinga choti mayunitsi akale akathetsedwa, m'malo mwake aphatikizanso chitetezo ichi.

Auto-monitoring, yomwe imadziwikanso kuti kudziyesa-yekha, imatanthawuza njira yomwe imatsimikizira kuti chipangizocho chikugwira ntchito bwino potsimikizira kuti zomverera ndi mphamvu zaulendo zikugwira ntchito.Kudziyesa uku kumatsimikizira kuti ma GFCI amayesedwa pafupipafupi, zomwe ogwiritsa ntchito samachita kawirikawiri.Ngati kudziyesa kulephera, ma GFCI ambiri amakhalanso ndi chizindikiro cha kutha kwa moyo kuti achenjeze wogwiritsa ntchito pomwe gawo likufunika kusinthidwa.

Gawo lachiwiri la zosinthidwa za UL 943 zomwe zasinthidwa mobwerezabwereza Reverse Line-load Mis-wire Protection.Kusintha kwa Line-Load kumalepheretsa mphamvu ku unit ndikuletsa kuyikhazikitsanso pakakhala vuto ndi waya.Kaya chipangizochi chikugwiritsidwa ntchito koyamba kapena chikuyimitsidwanso, mawaya aliwonse olakwika pa GFCI yodziyesa yokha ipangitsa kuti magetsi awonongeke komanso/kapena kulephera kuyimitsanso chipangizocho.

Pofika pa Meyi 5, 2021, UL 943 imafuna kuti zinthu zomwe zimagwiritsidwa ntchito m'mapulogalamu osunthika (Mwachitsanzo, ma cordset a GFCI a In-line ndi Portable Distribution Units) aphatikize ukadaulo woyesa magalimoto kuti akweze chitetezo cha ogwira ntchito ndi malo antchito.