Cov qauv thiab qauv ntawm lub fuse
1. Lub tswv yim ntawm fuse 5261
Fuse, IEC127 tus qauv txhais nws li" fuse-txuas 4102" ;. Nws yog cov hluav taws xob tiv thaiv nruab rau hauv 1653 Circuit Court kom paub tseeb tias muaj kev nyab xeeb ntawm Circuit Court.
Kev ua haujlwm ntawm lub fuse yog: thaum lub Circuit Court ua haujlwm tsis zoo thiab ua rau lub cev tsis zoo, qhov tam sim no yuav txuas ntxiv, thiab qhov nce tam sim no yuav ua rau qee cov khoom lossis cov khoom muaj nqis hauv Circuit Court, thiab tseem yuav hlawv lub Circuit Court lossis txawm muaj hluav taws lossis cov xwm txheej loj. Yog tias lub fuse raug txhim kho hauv lub Circuit Court, lub fuse yuav fuse thiab txiav tawm qhov tam sim no thaum lub sijhawm tam sim no nce mus rau ib qho siab qhov siab, yog li tiv thaiv txoj haujlwm zoo ntawm lub Circuit Court. Qhov ntxov tshaj plaws fuse tau tsim los ntawm Edison ntau tshaj ib puas xyoo dhau los. Vim hais tias lub teeb roj incandescent tau kim heev thaum lub sijhawm kev lag luam raug txhim kho, nws tau siv thaum xub thawj los tiv thaiv lub teeb lub qaij uas muaj nqi heev.
2. Lub ntsiab cai ua haujlwm ntawm fuse
Peb tuaj yeem pom cov haujlwm yooj yim ntawm kev fuse los ntawm cov qauv hauv qab no: Q=0.24I2RT; qhov twg Q yog qhov muaj nqis, 0.24 yog qhov xwm yeem, Kuv yog qhov tam sim no ntws los ntawm tus neeg xyuas pib, R yog qhov tsis kam ntawm tus neeg xyuas pib, thiab T yog qhov tam sim no ntws los ntawm. sijhawm.
Tshwj xeeb, nws tuaj yeem nkag siab zoo li: Thaum cov khoom siv thiab cov duab ntawm lub fuse tau txiav txim siab, nws qhov kev cuam tshuam R yog qhov kev txiav txim siab ntau (yog tias nws qhov kev ntsuas qhov ntsuas kub tsis sib haum yog tsis xav txog). Thaum tam sim no ntws los ntawm nws, nws yuav ua kom sov, thiab nws cov cua sov yuav nce nrog lub sijhawm. Qhov loj me ntawm tam sim no thiab kev tawm tsam txiav txim siab qhov hluav taws xob ceev. Tus qauv ntawm fuse thiab nws cov teeb tsa teeb tsa lub zog txiav txim siab qhov nrawm ntawm tshav kub dissipation. Yog hais tias tus nqi ntawm kev tsim kho cua sov tsawg dua li tus nqi ntawm cov cua sov tawm, lub fuse yuav tsis tshuab. Yog hais tias tus nqi ntawm kev tsim kho cua sov yog ntau dua li tus nqi ntawm cov cua sov tawm, ces ntau thiab ntau dua tshav kub yuav tsim tawm. Vim tias nws muaj qee qhov kub thiab qhov ua tau zoo, qhov nce ntawm cov cua sov yog ua kom pom qhov kub nce ntxiv. Thaum lub cev kub kub dhau ntawm lub siab yaj ntawm lub fuse, lub fuse yuav tshuab. Qhov no yog li cas cov fuse ua haujlwm.
3. Cov qauv ntawm cov fuse
Lub fuse yog tsim ntawm insulating puag (txhawb feem), tiv tauj, yaj, thiab lwm yam.
Cov yaj yog lub hauv paus ua haujlwm tseem ceeb ntawm kev txuas. Cov melt yog sib npaug rau cov hlua hlau tshwj xeeb txuas hauv koob hauv xov xwm. Thaum lub Circuit Court luv luv-circuited lossis ntau dhau, qhov tam sim no loj dhau lawm thiab lub fuse melts vim muaj cua sov dhau, thiaj li txiav tawm ntawm Circuit Court. Cov melt yog feem ntau ua rau hauv filaments, grids lossis plaub ya ri. Cov khoom siv yaj tau muaj cov yam ntxwv ntawm qhov qis melting point, tus yam ntxwv ruaj khov thiab txhim kho yooj yim. Cov hlau xws li cov ntawv txhuas-yajthem alloy, cov ntawv ntshiab tooj liab, nyiaj ntawv plated tooj liab, txhuas, zinc, thiab nyiaj feem ntau siv;
Qhov thib ob yog kev sib cuag, uas feem ntau muaj ob qho, yog qhov tseem ceeb ntawm cov yaj thiab hluav taws xob sib txuas, nws yuav tsum muaj hluav taws xob zoo, thiab yuav tsum tsis txhob tsim cov teeb meem sib tiv tauj;
Tom qab ntawd muaj qhov txuas ntawm ntu. Kev ua haujlwm ntawm lub voj voos yog txhawm rau txhim kho lub fuse thiab ua rau peb ntu txhav tag nrho rau kev txhim kho yooj yim thiab siv. Nws yuav tsum muaj lub zog zoo txhua yam, rwb thaiv tsev, tiv tshav kub thiab ua hauj. Hauv kev siv Yuav tsum tsis muaj qhov tawg, deformation, hlawv, luv Circuit Court, thiab lwm yam.
Txij li thaum pib ib qho arc yuav tsim tawm thaum lub hmoov yaj yuav yaj thiab txiav tawm ntawm Circuit Court, txhawm rau txhawm rau tua tau cov kab hluav taws xob, cov yaj tau tsim nyob hauv cov vaj tsev fuse, thiab muaj cov khoom siv hluav taws xob tua. Cov khoom siv no yuav tsum muaj kev rwb thaiv tsev zoo thiab ua tau zoo. Thermal conductivity, thiab hluav taws xob tsis zoo. Quartz xuab zeb yog cov khoom siv zoo dua rau feem ntau siv arc extinguishing.
Tsis tas li ntawd, muaj qee qhov nrog fuse taw qhia txog cov cuab yeej, nws txoj haujlwm yog kom muaj qee yam tsos hloov tom qab fuse, uas yooj yim pom los ntawm cov neeg saib xyuas, xws li: ci, hloov xim, pop-up qhia, thiab lwm yam.
4. Cov yam ntxwv thiab cais tawm ntawm fuses
Fuse muaj qhov zoo ntawm cov qauv yooj yim, siv yooj yim, tus nqi qis, thiab lwm yam, thiab siv dav hauv cov tshuab hluav taws xob qis.
(1) Ntsia thawv fuse:
Quartz xuab zeb tau nruab rau hauv lub raj fuse thiab cov melt yog faus rau hauv nws. Thaum cov hmoov yaj yog fused, arc tau txau mus rau quartz xuab zeb thiab nws qhov khoob, uas tuaj yeem txias txias thiab tua ntau. Txhawm rau ua kom yooj yim saib xyuas, qhov taw qhia cov xim taw tes tau teeb tsa ntawm ib kawg ntawm lub fuse. Cov xim sib txawv qhia cov sib txawv ntawm cov khoom hluav taws xob sib txawv. Thaum lub hmoov yaj yog tshuab, cov xim taw tes dhia tawm los qhia tias tus yaj tau tawg lawm. Cov ntsia hlau fuse muaj qhov ntsuas tam sim no ntawm 5 txog 200A, thiab feem ntau yog siv hauv cov ceg uas muaj cov xov hluav taws xob luv luv lossis qhov chaw muaj cov pa roj tau yooj yim.
(2) Filled tube fuse:
Filled tube fuse yog hom fuse nrog qhov ntws tsawg. Nws muaj li ntawm plooj (porcelain melting tube) puv nrog quartz xuab zeb, ib qho kev sib tiv tauj thiab cov nyiaj-plated tooj liab daim phiaj zoo li yaj. Lub raj xa hluav taws xob fuse yog nruab rau lub hauv paus tshwj xeeb, xws li lub hauv paus nrog rab riam rho tawm los yog lub hauv paus nrog lub fuse ua cov riam cais tawm, thiab nws tau ua haujlwm los ntawm phau ntawv tuav. Qhov ntsuas seb tam sim no ntawm qhov fuse ntawm lub raj yog 50 ～ 1000A, uas tsuas yog siv rau overload lossis luv Circuit Court tiv thaiv ntawm cov khoom hluav taws xob.
(3) Filled kaw raj ceev ceev fuse;
Filled kaw raj ceev ceev fuse yog kev ceev fuse, uas yog tsim ntawm fuse tube, tiv tauj hauv qab kawg qhov taw qhia, striker thiab yaj. Cov yaj yog nyob rau hauv daim ntawv ntawm nqaim khaub lig-seem nyiaj los yog lub mesh. Qhov yaj yog rau kev siv ib zaug thiab tsis tuaj yeem hloov los ntawm cov neeg siv. Vim tias nws cov yam ntxwv ntawm kev ceev nrawm, feem ntau siv rau kev tiv thaiv semiconductor rectifier Cheebtsam.