Ceev Fuse
May 13, 2022
Ceev fuseyog ib hom fuse, uas yog tsuas yog siv rau luv luv-circuit tiv thaiv ntawm semiconductor rectifier Cheebtsam los yog rectifier li. Vim lub peev xwm tsawg dhau ntawm cov khoom siv semiconductor. Nws tsuas tuaj yeem tiv taus qhov loj dhau tam sim no hauv lub sijhawm luv luv, yog li kev tiv thaiv luv luv yuav tsum muaj peev xwm ua kom nrawm nrawm. Cov qauv ntawm cov fuse ceev yog qhov pib zoo ib yam li ntawm cov fuse nrog cov muab tub lim, tab sis cov khoom yaj thiab cov duab sib txawv. Nws yog qhov sib txawv-section yaj nrog V-zoo li qhov sib sib zog nqus groove punched los ntawm ib daim ntawv nyiaj.
Ntxiv nrog rau cov hlau hlau uas muaj qee yam zoo li, lub fuse ntawm lub fuse ua haujlwm ceev kuj tseem yuav muaj kev sib koom ua ke ntawm qee yam khoom ntawm nws, lub hom phiaj yog ua kom lub fuse disconnect sai sai nyob rau hauv cov xwm txheej overload.
Fast fuse yog ib hom fuse, uas feem ntau yog siv rau kev tiv thaiv luv luv ntawm cov khoom siv hluav taws xob rectifier lossis cov khoom siv rectifier. Vim lub peev xwm tsawg dhau ntawm cov khoom siv semiconductor. Nws tsuas tuaj yeem tiv taus qhov loj dhau tam sim no hauv lub sijhawm luv luv, yog li kev tiv thaiv luv luv yuav tsum muaj peev xwm ua kom nrawm nrawm. Cov qauv ntawm cov fuse ceev yog qhov pib zoo ib yam li ntawm cov fuse nrog cov muab tub lim, tab sis cov khoom yaj thiab cov duab sib txawv. Nws yog qhov sib txawv-section yaj nrog V-zoo li qhov sib sib zog nqus groove punched los ntawm ib daim ntawv nyiaj.
Ntxiv nrog rau cov hlau hlau uas muaj qee yam zoo li, lub fuse ntawm lub fuse ua haujlwm ceev kuj tseem yuav muaj kev sib koom ua ke ntawm qee yam khoom ntawm nws, lub hom phiaj yog ua kom lub fuse disconnect sai sai nyob rau hauv cov xwm txheej overload.
Fast fuses highlight "ceev", uas txhais tau hais tias siab rhiab heev. Thaum lub Circuit Court tam sim no overloaded, lub fuse yuav kub sai sai nyob rau hauv qhov kev txiav txim ntawm lub solder pob qij txha, thiab lub fuse yuav sai sai disconnected. Lub fuse ceev ceev zoo muaj kev ua haujlwm siab thiab feem ntau yog siv los tiv thaiv thyristor thiab qee cov khoom siv hluav taws xob.
Cov qauv ntawm fuse ceev
Lub fuse muaj rau 6 qhov chaw: lub plhaub hlau nplaum, cov phaj conductive, yaj, quartz xuab zeb, arc extinguishing tus neeg sawv cev thiab qhov taw qhia. Cov khoom ntawm cov yaj yog cov nyiaj dawb huv, thiab cov duab yog ib daim duab plaub nrog lub qhov puag ncig thiab lub caj dab nqaim.
Cov yam ntxwv ntawm cov fuses ceev
Inverse time tam sim no tiv thaiv feature. Lub fuse muaj qhov cuam tshuam lub sijhawm ncua sijhawm, uas yog, thaum lub sijhawm dhau los yog qhov me me, lub sijhawm fusing ntev; thaum lub overload tam sim no loj, lub sij hawm fusing yog luv. Yog li ntawd, nyob rau hauv ib tug tej yam overload tam sim no thiab overload lub sij hawm, lub fuse yuav tsis raug tshuab thiab yuav siv tau tsis tu ncua. Fuses muaj ntau yam sib txawv cov yam ntxwv nkhaus, uas tuaj yeem siv rau kev xav tau ntawm ntau hom kev tiv thaiv khoom.
Cov yam ntxwv txwv tam sim no
Vim tias cov yaj ntawm cov fuse ceev yog ib daim ntawv duab plaub nrog cov kab ntawm lub voj voog thiab lub caj dab nqaim, thiab tau ntim nrog quartz xuab zeb arc extinguishing nruab nrab. Qhov chaw hla ntawm lub caj dab nqaim ntawm lub voj voog yog me me, thiab lub peev xwm cua sov yog me me. Thaum muaj qhov cuam tshuam luv luv tshwm sim, thaum qhov txhaum tam sim no tsis tau mus txog qhov xav tau luv luv tam sim no, nws tau fused, thiab cov arc tau muab faib ua ntau ntu me me los ntawm quartz xuab zeb. Nyob rau hauv txoj kev no, qhov nce ntawm qhov luv-circuit tam sim no yog txwv thiab lub extinguishing ntawm lub arc yog ceev.
Muaj zog tawg muaj peev xwm
Thaum muaj kev cuam tshuam luv luv tshwm sim, lub caj dab nqaim ntawm lub voj voog yog thawj zaug fused, thiab cov arc tau muab faib ua ntau ntu me me los ntawm cov xuab zeb quartz, thiab cov arc yog sai sai tua. Txij li thaum lub quartz xuab zeb yog insulating, tom qab lub arc yog extinguished, lub fuse tam sim ntawd los ua ib tug insulator, tawg lub Circuit Court. Yog li ntawd, lub fuse ceev ceev muaj lub zog tawg, uas tuaj yeem siab li 50kA.
Thaum muaj kev cuam tshuam luv luv tshwm sim hauv Circuit Court nrog lub zog me me uas cov khoom siv thauj khoom dais, qhov cuam tshuam lub zog uas cov khoom thauj khoom dais yog:
W=IRt Hauv cov qauv, I-circuit tam sim no; R-circuit tsis kam; t - lub sij hawm los ntawm qhov tshwm sim luv luv rau Circuit Court raug txiav tawm. Lub fuse ceev ceev muaj lub sijhawm luv luv thiab muaj qhov cuam tshuam zoo tam sim no, yog li qhov cuam tshuam lub zog ntawm cov khoom siv thauj khoom me me.