Yuav xaiv tus fuse li cas?
Kev xaiv ntawm lub fuse yog qhov nyuaj heev. Ib tug neeg piav qhia nws hauv kev nthuav dav?
tus kheej lub tswv yim:
1. Tam sim no, feem ntau ntawm cov fuse siv (ntawm no yog hais txog qhov fuse ntawm IEC thiab TUV system) yog aR (tseem hu ua tshuab nrawm) gG (tseem hu ua qeeb tshuab) gR (tseem hu ua kev sib tsoo ceev) ob tsab ntawv muaj lub ntsiab lus sib xws , g txhais tau hais tias Muaj kub yaj thiab luv tiv thaiv Circuit Court, ib txhais tau tias tsuas yog luv thaiv kev tiv thaiv; R txhais tau tias kev tiv thaiv semiconductor (tuaj yeem nkag siab sai sai melting) g txhais tau tias kev tiv thaiv zoo tib yam, xaim tiv thaiv (tseem to taub raws li qeeb melting)
2. Qhov zoo thiab tsis zoo
Hom a: qhov loj me me, nrawm melting taw tes, tab sis tsis muaj kev tiv thaiv thermal fuse, feem ntau 4 zaug qhov chaw nyob tam sim no los yog ntau dua kom ntseeg tau tawg, AC thiab DC voltage tuaj yeem ncav cuag qhov loj
Hom g: loj ntim, qeeb fusing, kub yaj kev tiv thaiv, tiv thaiv ntau yam, AC tuaj yeem loj, DC voltage me me;
3. Cov lus pom zoo rau kev xaiv:
1) Tsis hais txog qhov ntim, gG fuse tuaj yeem siv, thiab hom tsiaj nyeg yog NT / NH hom. Kev xaiv voltage tsis yog tsawg tshaj li qhov hluav taws xob tiag. Kev xaiv tam sim no Kuv (qhov tseeb)=0.8 ~ 0.9 * Kuv (fuse) * siab kub derating qhov kub ntawm qhov kub no. Tab sis yog tias qhov hluav taws xob muaj loj, tsis txhob siv cov tshuaj no
2) Xav txog qhov voltage Jianyi los siv lub tswvyim no. Nws yog ntau tshaj li aR fuse, thiab qhov hluav taws xob yuav tsum tsis txhob tsawg dua qhov hluav taws xob tiag. Kev xaiv tam sim no Kuv (qhov tseeb)=0.6 ~ 0.7 * Kuv (fuse) * siab kub derating qhov kub ntawm qhov kub no (qhov kev daws teeb meem no zoo dua)
Qhov saum toj no tsuas yog ib qho kev xaiv niaj zaus, Kuv tus kheej pom zoo xaiv lub phiaj xwm xaiv rau koj tus kheej los ua cov kev sim kom paub tseeb cov khoom siv yoog raws:
1. Ntsuas qhov txias txias ntawm qhov fuse (piv txwv li cov ua haujlwm ntawm chav tsev kub)
2. Muaj 10 fuses hauv series nrog 2m ntu nruab nrab ntawm lawv, thiab 1m ntu ntawm ob qho xaus ntawm qhov fais fab mov.
3. Kis 1.05I (lub cev hluav taws xob tam sim no) nyob rau hauv qhov ntsuas huab cua tsis zoo (1.1 zaug rau kev ntseeg tau) rau 1h, tom qab ntawd tsis muaj tam sim no rau 0.1h, 100 mus, lub fuse yuav tsis tawg lossis txias hloov pauv tus nqi tsis ntau tshaj 10% , Xav tias nws yog qhov tsim nyog los siv hluav taws xob nyob ntev
Rau qhov therush tam sim no, ua ntej suav qhov I thiab T qhov tseem ceeb ntawm inrush tam sim no (denoted li A), thiab tom qab ntawd piv qhov pre-arc I2T ntawm fuse (qhov tshwj xeeb yog feem ntau preI2T, txhais tau tias yog B). Yog tias A=50% B, xav txog pes tsawg tus impulses li 100 Txog 1000 zaus yog A=1 / 3B, thiab ntau txhiab zaus yog A=0.25B. Lub neej tiag tiag cuam tshuam lub neej, zoo sib xws, txias hloov pauv tus nqi yog xam tsawg dua 10%, tom qab ntawd tus naj npawb ntawm qhov cuam tshuam rau lub sijhawm ntawd ua tau raws li lub neej xav tau.
