Kubva payakatanga kudiwa makore makumi mashanu apfuura, iyo Ground Fault Circuit Interrupter (GFCI) yakagadziridzwa dhizaini yakawanda kuwedzera kuchengetedzwa kwevashandi.Shanduko idzi dzakakonzerwa neruzivo kubva kumasangano akaita seConsumer Products Safety Commission (CPSC), National Electrical Manufacturers Association (NEMA), uye Underwriters Laboratories.
Imwe yeaya mazinga, UL 943, inopa chaiwo zvinodiwa kune pasi-fault circuit-interrupters inonamatira kumagetsi ekuisa macode eCanada, Mexico, uye United States.Muna Chikumi 2015, UL yakagadziridza maitiro avo e943 kuti aite kuti ese akaisirwa zvachose mayuniti (senge midziyo) anosanganisira auto-monitoring basa.Vagadziri vakakwanisa kutengesa zvinhu zvaivepo kune vatengi vavo, nechinangwa chiri chekuti sezvo mayuniti ekare akabviswa, kutsiva kwavo kwaizobatanidza iyi imwe nzira yekuchengetedza.
Auto-monitoring, inozivikanwawo sekuzviedza-yega, inoreva maitiro ekuona kuti unit iri kushanda nemazvo nekuona otomatiki kunzwa uye kugona kwekufamba kuri kushanda.Uku kuzviyedza kunovimbisa kuti maGFCI anoyedzwa nguva nenguva, chinova chinhu chisingawanzoitwa nevashandisi.Kana iyo yekuzviedza ikatadza, mazhinji eGFCI anewo chiratidzo chekuguma-kwehupenyu kunyevera mushandisi wekupedzisira kana unit ichida kutsiva.
Chikamu chechipiri chezvakagadziridzwa UL 943 mandates yakadzokororwa Reverse Line-load Mis-waya Dziviriro.Line-Load reversal inovharisa simba kuyuniti uye inodzivirira kuimisa patsva kana paine nyaya newaya.Kunyangwe iyo unit iri kushandiswa kekutanga kana iri kuisirwa patsva, chero wiring isiriyo kune yekuzviongorora yega GFCI inozokonzera kurasikirwa kwemagetsi uye/kana kutadza kuseta patsva mudziyo.
Kubva muna Chivabvu 5, 2021, UL 943 inoda kuti zvigadzirwa zvinoshandiswa mumashandisirwo anotakurika (In-line GFCI cordsets uye Portable Distribution Units, semuenzaniso) zvibatanidze tekinoroji yekuongorora mota kuti iwedzere kukwidziridza mushandi uye nzvimbo yebasa.
Nguva yekutumira: Sep-05-2022