Wige ibijyanye no kuvugurura ibikoresho bya UL 1449 Surge Protective Devices (SPDs), wongereho ibizamini byibicuruzwa mubidukikije, cyane cyane ukoresheje ubushyuhe burigihe nubushakashatsi. Wige icyo kurinda icyo aricyo, nibidukikije bitose.
Kurinda kubaga (Surge Protective Devices, SPDs) buri gihe byafashwe nkuburinzi bukomeye kubikoresho bya elegitoroniki. Barashobora gukumira imbaraga zegeranijwe hamwe n’imihindagurikire y’amashanyarazi, kugirango ibikoresho bikingiwe bitazangirika n’umuriro utunguranye. Kurinda ibintu birashobora kuba igikoresho cyuzuye cyakozwe mu bwigenge, cyangwa gishobora gushushanywa nkigice kandi kigashyirwa mubikoresho byamashanyarazi bya sisitemu yingufu.
Nkuko byavuzwe haruguru, abashinzwe kubaga bakoreshwa muburyo butandukanye, ariko burigihe biranenga cyane iyo bigeze kumikorere yumutekano. Igipimo cya UL 1449 nikintu gisanzwe gisabwa abimenyereza uyumunsi bamenyereye mugihe basaba isoko.
Hamwe nubwiyongere bwibikoresho bya elegitoronike no kuyikoresha mu nganda nyinshi kandi nyinshi, nk'amatara yo ku mihanda ya LED, gari ya moshi, 5G, Photovoltaics na electronics zikoresha amamodoka, imikoreshereze n’iterambere ry’abashinzwe umutekano biriyongera cyane, kandi amahame y’inganda nayo arakenewe kugendana nibihe no gukomeza kugezwaho amakuru.
Ibisobanuro by'ibidukikije
Yaba NFPA 70 y’ishyirahamwe ry’igihugu rishinzwe kurinda umuriro (NFPA) cyangwa Kode y’amashanyarazi y’igihugu (NEC), “ahantu h'ubushuhe” hasobanuwe neza ku buryo bukurikira:
Ahantu harinzwe nikirere kandi ntigishobora kwiyuzuzamo amazi cyangwa andi mazi ariko biterwa nubushyuhe buke.
By'umwihariko, amahema, ibaraza rifunguye, hamwe nubutaka cyangwa ububiko bwa firigo, nibindi, ni ahantu “hashyizweho ubushyuhe buke” muri kode.
Iyo umurinzi wo kubaga (nka varistor) ushyizwe mubicuruzwa byarangiye, birashoboka cyane kuko ibicuruzwa byanyuma byashyizweho cyangwa bigakoreshwa mubidukikije bifite ubuhehere butandukanye, kandi bigomba kurebwa ko mubihe nkibi bitose, kwiyongera umurinzi Niba ishobora kuba yujuje ubuziranenge bwumutekano mubidukikije muri rusange.
Isuzuma ryibicuruzwa bisabwa mubidukikije
Ibipimo byinshi bisaba mu buryo bweruye ko ibicuruzwa bigomba gutsinda urukurikirane rwibizamini byo kwizerwa kugirango hamenyekane imikorere mugihe cyibihe byubuzima, nkubushyuhe bwo hejuru nubushuhe bwinshi, ihungabana ryumuriro, kunyeganyega no guta ibizamini. Ku bizamini birimo ibidukikije bigereranijwe, ubushyuhe buhoraho hamwe nubushuhe buzakoreshwa nkisuzuma ryibanze, cyane cyane ubushyuhe bwa 85 ° C / 85% by'ubushuhe (bakunze kwita "ikizamini cya kabiri 85") hamwe na 40 ° C ubushyuhe / 93% Ubushuhe y'ibi bice bibiri by'ibipimo.
Ikizamini gihoraho nubushuhe bugamije kwihutisha ubuzima bwibicuruzwa hakoreshejwe uburyo bwubushakashatsi. Irashobora gusuzuma neza ubushobozi bwo kurwanya gusaza kwibicuruzwa, harimo no kureba niba ibicuruzwa bifite ibiranga ubuzima burebure no gutakaza bike mubidukikije bidasanzwe.
Twakoze ubushakashatsi bwibibazo ku nganda, kandi ibisubizo byerekana ko umubare utari muto w’abakora ibicuruzwa biva mu mahanga batanga ibisabwa kugira ngo hasuzumwe ubushyuhe n’ubushuhe bw’abashinzwe kurinda ibicuruzwa hamwe n’ibikoresho byakoreshejwe imbere, ariko igipimo cya UL 1449 icyo gihe ntabwo cyari gifite a bihuye Kubwibyo, uwabikoze agomba gukora ibizamini byinyongera wenyine nyuma yo kubona icyemezo cya UL 1449; kandi niba hakenewe raporo yundi muntu wa gatatu, ibyemezo byibikorwa bimaze kuvugwa bizagabanuka. Byongeye kandi, mugihe ibicuruzwa byanyuma bisabye ibyemezo bya UL, bizahura kandi nigihe raporo yerekana ibyemezo byibikoresho byakoreshejwe imbere-bitarimo igitutu bitashyizwe mubizamini byo gusaba ibidukikije bitose, kandi birakenewe isuzuma ryinyongera.
Twumva ibyo abakiriya bakeneye kandi twiyemeje gufasha abakiriya gukemura ibibazo byububabare bahura nabyo mubikorwa nyabyo. UL yatangije gahunda yo kuvugurura 1449 isanzwe.
Ibisabwa bihuye nibisabwa byongewe kubisanzwe
Ubusanzwe UL 1449 yongeyeho ibisabwa byo kugerageza ibicuruzwa ahantu hatose. Ababikora barashobora guhitamo kongeramo iki kizamini gishya mugihe cyibizamini mugihe basaba icyemezo cya UL.
Nkuko byavuzwe haruguru, ikizamini cyibidukikije bitose bifata cyane cyane ubushyuhe nubushyuhe buri gihe. Ibikurikira birerekana uburyo bwo gukora ibizamini kugirango hamenyekane niba Varistor (MOV) / Umuyoboro wa gazi ya gazi (GDT) ikoreshwa mubidukikije bitose:
Ingero zipimisha zizabanza gukorerwa ibizamini byo gusaza munsi yubushyuhe bwinshi nubushyuhe bwinshi bwamasaha 1000, hanyuma voltage ya varistor ya varistor cyangwa voltage yameneka yumuyoboro wa gazi izagereranywa kugirango hemezwe niba ibice byo gukingira byashobora kumara igihe kirekire Mubidukikije bitose, iracyakomeza imikorere yumwimerere yo kurinda.
Igihe cyo kohereza: Gicurasi-09-2023