Kev xaiv thiab kev teeb tsa lub tshuab hluav taws xob hluav taws xob yog ib theem tseem ceeb tshaj plaws hauv kev tsim cov xaim hauv ob qho tib si nyob hauv tsev thiab tsis nyob hauv tsev. Nws yog cov cuab yeej no uas muaj peev xwm tiv thaiv hluav taws xob network los ntawm overload thiab luv luv Circuit Court, txwv tsis pub cov khoom siv tam sim no thaum nws overheats lossis tshaj nws cov nqi txwv.
Yuav ua li cas lub tshuab hluav taws xob ua haujlwm
Lub hauv paus ntsiab lus ntawm kev ua haujlwm ntawm txhua lub tshuab hluav taws xob yog ua raws ob hom kev tiv thaiv. Cov no yog thermal tiv thaiv thiab electromagnetic tiv thaiv. Hauv ABs niaj hnub no, ob hom kev tiv thaiv tau muab sib xyaw ua ke, thiab cov khoom siv zoo li no raug xaiv los ntawm lub sijhawm tshwj xeeb - Circuit Court breakers nrog kev tso tawm ua ke.
tiv thaiv kub
Qhov kev tiv thaiv thermal ntawm Circuit Court breaker yog tshwm sim nyob rau hauv cov xwm txheej uas cov khoom siv hluav taws xob ua haujlwm txuas nrog lub network, tag nrho lub zog ntawm qhov siab tshaj qhov tso cai rau lub network no(los yog nws ntu). Raws li txoj cai, qhov no tshwm sim thaum cov neeg siv khoom loj xws li lub hwj chim hluav taws xob, lub rhaub dej, lub tshuab ntxhua khaub ncaws, lub tshuab vuam, thiab lwm yam tau qhib rau tib lub sijhawm. ntawm kev xaim, tsis yog tsim los rau kev thauj khoom zoo li no. Lub thermal zog uas tshwm sim nyob rau hauv tus neeg xyuas pib (qhov no, cov hlau) tsuas yog tsis muaj sij hawm mus dissipate vim muaj coob tus electrons, yog li ntawd qhov kub ntawm tus neeg xyuas pib maj mam nce. Lub phaj ntsia hauv Circuit Court breaker kuj heats li, thiab nyob rau hauv ib lub sij hawm, nyob rau hauv lub siab kub, nws pib deform, ua rau tso tawm mus ua hauj lwm thiab yog li de-energizing lub network.
Kev sim rov qab qhov hloov pauv ntawm lub ntsuas hluav taws xob mus rau nws txoj haujlwm ua haujlwm feem ntau ua tsis tiav: kom txog thaum qhov kub thiab txias ntawm cov hlau thiab phaj poob mus rau qhov qub, cov khoom siv hluav taws xob tsis tuaj yeem rov qab los.
tiv thaiv electromagnetic
Nyob rau hauv cov ntaub ntawv ntawm ib tug luv luv Circuit Court, thaum tam sim no loj hlob ntawm xob laim ceev thiab ua rau ib tug kub dhia uas yuav yaj cov hlau thiab ua rau hluav taws, lub thermal tiv thaiv tsuas yog tsis muaj sij hawm mus ua hauj lwm, yog li cov electromagnetic tiv thaiv los. mus rau hauv kev txiav txim, qhib lub Circuit Court tam sim ntawd. Lub nrawm sib nqus flux hauv qhov tshwj xeeb solenoid thawb tawm ntawm cov tub ntxhais, uas ua rau lub voj voog kaw. Qhov kub-kub hluav taws xob arc uas inevitably tshwm sim nyob rau hauv cov ntaub ntawv no yog extinguished nyob rau hauv ib tug tshwj xeeb chamber uas muaj ntau yam ywj siab daim hlau, yog li ntawd lub Circuit Court breaker lub cev tsis yaj.
Nws yuav muaj peev xwm muab lub zog rau lub network tsuas yog tom qabcov khoom siv hluav taws xob uas ua rau luv luv tau pom thiab txiav tawm. Nws tsuas yog txaus los txiav tawm ntawm lub network txhua qhov ntawm cov khoom siv uas tau ua haujlwm thaum lub sijhawm kaw.
Kev xaiv hluav taws xob Circuit Court breaker
Yuav kom lub Circuit Court breaker ua tiav nws lub hom phiaj thaum muaj teeb meem, nws yuav tsum ua tib zoo xav txog qhov kev xaiv ntawm cov cuab yeej zoo li no. Ntawm lub rhawv ntawm cov khw muag khoom hluav taws xob koj tuaj yeem pom ntau pawg ntawm Circuit Court breakers ib zaug - thiab ntawm lawv txhua tus koj tuaj yeem pom qhov sib txawv tam sim no. Txhawm rau txiav txim siab seb cov khoom siv twg tsim nyog rau ib qho kev sib txuas, koj tuaj yeem siv Ohm txoj cai lij choj, paub los ntawm cov ntaub ntawv kawm hauv tsev kawm, ib qho ntawm cov qauv uas hais tias: "Lub zog tam sim no nyob rau hauv ib lub voj voog yog ncaj qha proportional rau qhov voltage thiab inversely proportional. rau qhov hluav taws xob tsis kam ntawm ntu no ntawm lub voj voog."
Qhov no yog qhia los ntawm qhov sib npaug zoo-paub mis I=P / U, uas zoo heev rau kev suav hauv tsev zog.
Kuv nyob rau hauv cov ntaub ntawv no yog lub zog tam sim no nyob rau hauv amperes, qhov tseem ceeb ntawm cov uas tau qhia nyob rau hauv cov ntaub ntawv ntawm Circuit Court breakers: 10A, 25A los yog 40A.
P - zog. Txhua leej txhua tus yuav tsum xam tus nqi no raws li tus naj npawb ntawm cov khoom siv hluav taws xob siv hauv ib ntu ntawm cov xaim.
U - qhov hluav taws xob tseem ceeb, sawv cev los ntawm tus lej tas li ntawm 220 volts.
Example of AB power calculation
Ib qho piv txwv yog xaiv lub zog hluav taws xob hluav taws xob rau chav ua noj loj. Zoo li qhov chawCov neeg siv khoom siv hluav taws xob ntau siv tau siv:
- chav ua noj yog nruab nrog lub tub yees, microwave, hluav taws xob, lub tshuab ntxhua khaub ncaws thiab lub TV me me. Ua ntej koj yuav tsum paub txog tag nrho lub zog ntawm cov khoom siv hluav taws xob (cov ntaub ntawv no muaj nyob hauv phau ntawv qhia lossis luam tawm ntawm cov npe lossis cov ntawv nplaum ntawm cov khoom siv lawv tus kheej). Feem ntau, cov ntsuas ntsuas yog kwv yees li hauv qab no: tub yees - 200W, microwave - 900W, hluav taws xob hluav taws xob - 1800W, hluav taws xob qhov cub - 2400W, tshuab ntxhua khaub ncaws - 2000W, cais system - 900W, TV - 50W. Tag nrho lub zog ntawm txhua yam khoom siv yog 8250W.
- Lub ntsiab voltage paub - nws yog 220V.
- 8250W, i.e. P, yuav tsum muab faib los ntawm 220V, i.e. U.
- Qhov tshwm sim yog 37.5A - nws yog qhov tam sim no uas lub tshuab yuav tsum dhau los ntawm nws tus kheej. Cov khoom lag luam ze tshaj plaws rau qhov kev ua tau zoo yog 40A Circuit Court breaker.
Tsis yog txhua leej txhua tus muaj lub cib fim, rau ib qho laj thawj lossis lwm qhov, los ua cov kev suav no. Nyob rau hauv tas li ntawd, koj muaj peev xwm siv lub rooj los xaiv lub Circuit Court breaker los ntawm lub hwj chim. Nrhiav qhov twg? Cov lus ntawm kev ntaus nqi ntawm cov tshuab tsis siv neeg rau tam sim no zoo li no:
Yog tias koj tsis xav siv sijhawm los nrhiav lub zog ntawm lub tsheb, lwm hom rooj yuav tuaj yeem ua ke:
Kev xaiv ntawm Circuit Court breaker los ntawm kev txiav tawm tam sim no
Ntxiv nrog rau tus nqi ntawm lub ntsej muag, txhua lub voj voog hluav taws xob tau cim nrog tsab ntawv,denoting lub thiaj li hu ua instantaneous mus txawv tebchaws tam sim no. Ntawm cov uas siv nyob rau hauv lub neej txhua hnub muaj cov cav tov nrog cov nram qab no designations:
- B - cov cuab yeej siv tau yooj yim tsim los rau kev siv cov neeg siv khoom qis tam sim no. Qhov no txhais tau hais tias xws li lub tshuab tsis siv neeg tuaj yeem ua haujlwm tsis tau tsuas yog nyob rau hauv cov ntaub ntawv luv luv, tab sis kuj thaum pib lub tshuab cua txias, xav txog nws qhov pib tam sim no tshaj li tus nqi nominal. Tias yog vim li cas cov khoom siv no tsis siv rau ntawm cov kab zoo tib yam.
- С - cov pab pawg feem ntau ntawm cov hluav taws xob hluav taws xob, cov ntsuas kev txiav tawm tam sim no tso cai rau koj kom lub network txuas nrog thaum siv ntau yam khoom siv hauv tsev niaj hnub, suav nrog cov neeg siv khoom muaj zog xws li cov cua sov, cua txias lossis tshuab ntxhua khaub ncaws. Kev xaiv ntawm Circuit Court breaker los ntawm lub hwj chim yog ua los ntawm cov cuab yeej ntawm pawg no.
- D - cov tshuab tsim nyog rau cov neeg siv khoom siv hluav taws xob uas muaj qhov pib siab (piv txwv li, lub tshuab hluav taws xob lossis tshuab vuam). Nrog lub koom haum tsim nyog ntawm lub tsev hluav taws xob hauv tsev, lawv muaj lub luag haujlwm nruj rau qee txoj kab, tsis cuam tshuam rau cov khoom siv hauv tsev.
Kev xaiv ntawm Circuit Court breaker los ntawm tus lej ntawm tus ncej
Kev teeb tsa AB, qhib ob peb tus ncej ib zaug, feem ntau yog siv hauv cov chaw lag luam lossis hauv cov vaj huam sib luag hluav taws xob. Hauv cov xwm txheej hauv tsev, ib leeg-ncej hluav taws xob hluav taws xob feem ntau yog siv.
Ib tug ncej Circuit Court breakers
Thaum txhim kho lub vaj huam sib luag hauv tsev hluav taws xob uas ib theem kab txuas nrog, nws cov ntsiab lus tseem ceebua ib leeg-ncej Circuit Court breakers, txuas nrog rau theem tawg thiab tsis cuam tshuam rau xoom xaim, mounted rau ntawm lub tsheb npav tshwj xeeb. Muab kev tiv thaiv rau cov kab hluav taws xob thiab teeb pom kev los ntawm luv luv Circuit Court thiab overheating.
Ob tug ncej hluav taws xob
Hauv tsev zog, lawv tau siv los ua cov khoom siv nkag uas tuaj yeem qhib ob lub xov hlau ib zaug - ob theem thiab xoom. Thaum xaiv lub Circuit Court breaker hais txog lub zog, nws yuav tsum nco ntsoov tias qhov ntsuas ntawm cov khoom siv no yuav tsum sib haum rau tag nrho cov khoom tsim los ntawm txhua tus neeg siv khoom hauv tsev lossis chav tsev - ob qho khoom siv hluav taws xob thiab tag nrho cov teeb pom kev zoo.
Daim duab qhia txog 40A bipolar circuit breaker.
3-ncej Circuit Court breakers
Cov khoom siv no yog nyob rau hauv chav kawm ntawm semi-kev lag luam thiab tsis tshua muaj neeg nyob hauv tsev. Lub ntsiab ntawm lawv siv yog peb-theem tes hauj lwm. Kuj tseem muaj cov khoom siv nrog plaub tus ncej, tab sis lawv siv tsawg thiab tsawg dua hauv lub neej txhua hnub.
kab lus
Nrog rau kev xaim kom raug, koj yuav tsum tsis txhob txwv tsuas yog xaiv lub tshuab hluav taws xob rau lub zog. Qhov kev hla ntawm cov hlau uas tau muab tso rau kuj tseem ceeb heev. Txij li qhov kev xaiv tsis raug ntawm cov hlau tuab, txawm tias qhov kev xaiv raug ntawm Circuit Court breaker tuaj yeem ua rau cov xwm txheej tsis zoo nyob rau hauv uas qhov kub tsis tu ncua yuav ua rau lub tshuab mus tas li.
Raws li, thiab xaiv cov xaim hla ntu raws li lub zogyuav tsum ua raws li tej kev cai. Qhov tseem ceeb tshaj plaws uas yuav tsum tau xav txog hauv txhua qhov xwm txheej yog txoj cai ntawm kev tso cua sov.
Txoj cai ntsuas kub tsis txaus
Lub cev tsis sib haum xeeb pab ua raws li nws, uas yog tiv thaiv.
"Kev tawm tsam yog lub cev muaj nuj nqis uas ua rau cov cuab yeej ntawm tus neeg xyuas pib tiv thaiv kev hla ntawm cov hluav taws xob tam sim no thiab sib npaug rau qhov sib piv ntawm qhov hluav taws xob ntawm qhov kawg ntawm tus neeg xyuas pib mus rau lub zog ntawm cov tam sim no ntws los ntawm nws."
Hauv kev lag luam ntawm cov khoom siv hluav taws xob, cov khoom siv hluav taws xob thiab cov hloov pauv tau paub txog tus neeg ua haujlwm yooj yim, qhov no yog vim qhov tseeb tias qee qhov ntawm cov hluav taws xob xa mus los ntawm cov xov hlau tau siv los ua cua sov rau tib cov xov hlau, uas yog tshwm sim los ntawm lawv. tsis kam. Thiab qhov nce ntawm qhov tam sim no yuav ua rau muaj kev cuam tshuam ntawm cov xaim hluav taws xob, thiab qhov no, tig mus, yuav ua rau muaj qhov poob qis. Yog li ntawd, qhov hla ntawm cov xov hlau yuav tsum sib haum rau qhov kev tso cai poob thiab cua sov. Tau kawg, koj tuaj yeem tsim cov xaim rau koj lub tsev los ntawm cov xaim loj (piv txwv li, 4 lossis 6 mm 2) thiab tsis xav txog qhov teeb meem ntawm overheating ntawm tag nrho, txawm li cas los xij, muab tus nqi ntau. ntawm cables nrog tooj liab conductors, qhov kev xaiv no tsis yog txhua tus muaj peev xwm them taus nws.
Txoj kev yooj yim tshaj plaws los xaiv cov xaim hla ntawm lub zog yog siv lub rooj:
Feem ntau, tooj liab cables yog siv los tsim cov xov hlau, txhuas feem ntau yog siv rau cov kab lus qhia. Qhov no yog vim tag nrho cov npe ntawm qhov zoo ntawm tooj liab tshaj aluminium,ntawm cov uas: kev pab cuam lub neej, conductivity, lub zog, yooj yim ntawm installation, thiab lwm yam. Tau kawg, cov xov tooj tooj tooj yog kim dua li cov txhuas, tab sis qhov kev them nyiaj ntau dhau, tshwj xeeb tshaj yog nrog kev xaiv kom raug, yuav tsis pom zoo.
Thaum txhim kho, koj yuav tsum tau coj mus rau hauv tus account cov yam ntxwv ntawm qhov chaw ntawm cov xaim - sab nraud lossis sab hauv. Cov nuances no yog tswj hwm los ntawm lwm lub rooj.
Siv cov ntaub ntawv no, nrog rau cov lus ntawm cov kev ntsuas tam sim no rau cov tshuab tsis siv neeg, nws yuav yooj yim dua los txiav txim siab qhov xav tau AB lub zog. Nws kuj yog ib qho yooj yim kom paub qhov kwv yees lub zog ntawm txhua yam ntawm cov khoom siv hluav taws xob. Piv txwv li, 10A Circuit Court breaker yog xaiv rau ib seem ntawm 0.75 mm2, uas sib haum mus rau ib tug load ntawm 1.3 kW.
Nws tseem ceeb heev kom txiav txim siab qhov ntev tshaj plaws uas tso cai rau cable ntev thiab cov khoom thauj raws li qhov ntev no, tab sis qhov no tsis siv rau hauv tsev uas qhov kev ncua deb tsis zoo heev.
