Ngaba ii-Surge Protectors zithintela imililo?

Ndiphantse ndalahlekelwa yigumbi leseva ngenxa yentambo enye embi. Elo vumba leplastiki etshayo ngentsimbi yesi-2 kusasa lisandivusa.

Ewe, izikhuseli zokutshaya kombane zinokumisa imililo emininzi yombane. Zithintela ukutyibilika kombane ngequbuliso okunyibilikisa iingcingo kwaye kutshise iplastiki ekufutshane. Azigqibelelanga, kodwa zinciphisa umngcipheko womlilo ukuya kuthi ga kwi-70% kuvavanyo lwam lwefektri.

Qhubeka ufunda kwaye ndiza kukubonisa ngqo indlela abasebenza ngayo, apho basilela khona, kunye nento endiyenzayo ukugcina abathengi bam bekhuselekile.

 Zisebenza njani izixhobo zokukhusela i-Surge? Ngaba zinokuwumisa ngokwenene umlilo?

Ndiqhuba isityalo sokukhusela i-surge eWenzhou. Sivavanya yonke imihla. Isixhobo esilungileyo sinciphisa i-6 000 V spike iye kwi-330 V ngaphantsi kwe-nanosecond enye. Eso sixhobo sikhawulezayo sithintela iingcingo ukuba zingatshisi kakhulu kwaye ziqale umlilo.

Ngaphakathi kwi-Metal-Oxide Varistor (MOV)

I-MOV yidiski encinci yeseramikhi. Ihlala phakathi kwentambo ephilayo kunye nentambo engathathi cala. Kwi-230 V eqhelekileyo ayenzi nto. Xa kufika i-spike, ukumelana kwe-MOV kuyehla kuye phantse kwi-zero. Amandla angaphezulu angena kwintambo engathathi cala kwaye kude nomthwalo. Ubushushu buncinci kwaye i-MOV iyaphola kwakhona.

Uvavanyo Lomlilo Wokwenene kwiLabhoratri Yam

Sithathe ii-power strips ezimbini. Enye yayine-MOV, enye yayingenayo. Sifake i-spike ye-4 000 V izihlandlo ezili-100. I-strip engena-MOV ifikelele kwi-180 °C kwaye iplastiki yaqala ukunyibilika. I-strip ene-MOV yahlala kwi-35 °C. Umfanekiso ongezantsi ubonisa i-strip enyibilikisiweyo. Akukho langatye libonakalayo, kodwa umngcipheko wawucacile.

Isizathu Sokuba Kusabakho Imililo Eminye

I-MOV inokungasebenzi kakuhle kwi-short-circuit. Ukuba i-thermal fuse ayikho, i-MOV iyaqhubeka nokufudumala. Sifaka i-fuse yesibini kunye ne-housing engatshiyo. Yiyo loo nto isityalo sethu saseWenzhou sisebenzisa iplastiki ye-UL 94 V-0. Iyayimisa ilangatye ngaphantsi kwemizuzwana eli-10.

Yintoni edibanisa umbane kunye nomlilo?

Ndibone umngxuma oyi-1 cm utshiswe kwi-PCB emva kokunyuka okubi kanye. I-spike ifumene umkhondo obuthathaka yaza yawuguqula waba yindawo eshushu engama-300°C. Loo ndawo yakhanyisa ibhokisi yeplastiki.

Apho Ubushushu Buvela Khona

Intambo yi-resistor. Xa i-voltage iphindaphindwa kabini, amandla anyuka kane. I-trace encinci kwi-PCB engabizi ingasebenza njenge-fuse. Iyakhanya ngobomvu ize itshise ibhodi. Itheyibhile ibonisa izibalo.

 Ibali Lokwenyani Elivela Kumthengi WaseJamani

Umakhi wepaneli eMunich uthenge imicu engabizi kakhulu kumthengisi ongaziwayo. Kwabakho isivuthuvuthu sasehlotyeni. Ukunyuka kwamatye kwafumana umkhondo we-0.5 mm kwibhodi yokudlulisela. Ibhodi yatsha kwaye kwafuneka itshintshwe yonke iphaneli. Umlilo wababiza i-80 000 €. Emva koko bathenga imicu ene-UL 1449 4th edition kuphela. Ngoku sithumela iziqwenga ezingama-2 000 kubo inyanga nenyanga.

Kutheni Umlilo Uqala Ngaphakathi Kwisixhobo

Intambo yangaphandle ibukeka ilungile. Umonakalo ufihliwe kwi-PCB. Yiyo loo nto ndicela abathengi bam ukuba bavavanye i-voltage ye-let-through. Sibanika ingxelo yovavanyo yasimahla kuyo yonke ibhetshi. Ukuba i-let-through ingaphezulu kwe-400 V, siyayilahla ibhetshi.

Izixhobo Zokukhusela Ukunyuka Zinceda Njani Ukuthintela Imililo?

Ndongeza iileya ezintathu kwiimveliso zam: i-MOV yokuklipha, i-fuse yokusika, kunye ne-V-0 yokuhlala ukuze ilawule. Olu hlobo lwesithathu lwehlisa umngcipheko womlilo ngama-70% kuphononongo lwethu lwango-2023 kwiirakhi ezili-1 200 e-Itali.

Umaleko 1 - Cinezela iSpike

Sikhetha iidiski zeMOV ezinobubanzi obuyi-14 mm. Zingathatha i-6 500 A ngeshoti enye. Idiski enkulu isasaza ubushushu. Oko kugcina ubushushu bungaphantsi kwama-80 °C nokuba sele kubethe i-3 kA.

Umaleko 2 - Sika Amandla

Sifaka i-fuse yobushushu ecaleni kwe-MOV. Ukuba i-MOV ishushu kwi-115 °C, i-fuse ivula kwimizuzwana engama-30. Umbane uphelile kwaye ikhonkco lomlilo liyayeka. I-fuse isebenza kube kanye, kodwa isindisa isakhiwo.

Umaleko 3 - Gcina iLanga

Ibhokisi yiplastiki ye-UL 94 V-0. Sikwafaka isikhuselo sentsimbi esiyi-1 mm esijikeleze i-MOV. Kuvavanyo lwethu lwegumbi lokutsha, ilangatye liyafa kwimizuzwana esi-8. Akukho plastiki iwayo, akukho kusasazeka.

Ubungqina bentsimi obuvela eFransi

Iziko ledatha elikufutshane neParis lifake ii-rack bars zethu ezingama-800. I-bar enye yabetha i-6 kA. I-bar yacima, i-fuse yavuleka, kwaye i-rack yaqhubeka isebenza kwi-bypass. Akukho mlilo, akukho xesha lokungasebenzi. Umphathi wesiza undithumelele ifoto ye-bar etshileyo kunye nenqaku lokubulela. Loo foto ngoku ikwiwebhusayithi yethu.

Zeziphi Izinto Ezinokuthintela Izixhobo Zokukhusela Umlilo Ezingenako Ukukhawuleza?

Ndixelela wonke umthengi inyaniso: isixhobo sam siyayimisa imijikelo, hayi ii-short circuits. Ukuba ucingo olukhululekileyo luchukumisa i-case, i-surge bar ayizukunceda. Usadinga i-breaker kunye neentambo ezilungileyo.

Imililo Egqithisileyo

Isifudumezi sitsala i-15 A kwi-strip ye-10 A. Ubhedu olungaphakathi lushushu kwi-150 °C. Akukho spike ikhoyo, ngoko ke i-MOV ayisebenzi. Yi-breaker kuphela enokukusindisa. Ndiprinta i-amp rating ngombala ongqindilili kwibhokisi nganye.

Imililo Engaqinanga Yocingo

Izakhiwo ezindala zineengcingo eziyi-0.75 mm². Isiphelo sesikrufu siyakhululeka ngokuhamba kwexesha. Isithuba siyatsha kwaye sishushu. Obo bushushu buqala umlilo ngaphakathi kodonga. Ibha yokungena ngaphandle kodonga ayinakuyiva. Ndicebisa abathengi bam ukuba bongeze ii-arc-fault breakers kwiphaneli.

Ukubetha ngqo kombane

Ukubetheka ngqo kwe-200 kA eluphahleni kuya kunyibilikisa nayiphi na i-MOV. Ibha iba yibhola yomlilo. Yiyo loo nto songeza intonga yombane yeClass I emnyango wenkonzo. Intonga ifumana ukubetheka okukhulu kwaye ibha ibona kuphela i-10% eseleyo. Ndithengisa zombini iimveliso kwaye ndihlala ndizidibanisa.

Isiphelo

I-surge bar elungileyo inqumla i-spike, inciphisa ubushushu, kwaye igcina ilangatye ebhokisini. Ixabiso eliphantsi liyi-inshorensi kwimililo emininzi, kodwa ayisiyomlingo. Yisebenzise ngee-breakers, ucingo oluhle, kunye nentonga yombane, kwaye ii-rack zakho ziya kuhlala zipholile nokuba ngobusuku obubi kakhulu besaqhwithi.