RCD (cov khoom siv tam sim no) yog tsim los tiv thaiv kev phom sij rau tib neeg thiab tsiaj txhu ntawm cov hluav taws xob tam sim no thaum kov cov nqa tam sim no thiab lwm qhov ntawm cov khoom siv thiab cov khoom siv hluav taws xob uas muaj zog. Lub luag haujlwm tseem ceeb tom ntej ntawm cov cuab yeej yog los tiv thaiv hluav taws thaum cov dej ntws tawm mus rau hauv av tshwm. Kev tiv thaiv yog tshwm sim nyob rau hauv kev tsis sib txuas ntawm cov khoom siv loj hauv cov xwm txheej hauv qab no:
- luv-circuiting lub tsev ntawm cov khoom siv hluav taws xob nyob rau hauv qhov hluav taws xob los ntawm lub cev mus rau hauv av;
- Sib cuag ntawm cov khoom nqa tam sim no nrog cov av uas tsis yog tam sim no-nqa qhov chaw ntawm cov khoom siv hluav taws xob vim yog kev puas tsuaj ntawm cov rwb thaiv tsev;
- hloov av (PE) thiab nruab nrab (N) conductors hauv hluav taws xob circuit.
RCD tseem tiv thaiv cov tes hauj lwm los ntawm lub zog hluav taws xob. Txhawm rau ua qhov no, qhov tsis yog-linear kuj txuas nrog qhov nruab nrab ntawm cov khoom siv nkag thiab theem ntawm cov zis. Ib qho hluav taws xob sib txawv ntws los ntawm nws thaum qhov hluav taws xob nce siab tshaj 270 V, tom qab ntawd RCD tua.
Cov cuab yeej tiv thaiv txawv ntawm hom thiab cov qauv ntawm kev ua haujlwm. Ib qho ntawm qhov ua tau zoo tshaj plaws yog xaiv RCD, uas muab cov phiaj xwm cuam tshuam ntawm pawg ntawm cov khoom thauj. Nws feature yogunderestimated ceev yam ntxwv ntawm kev khiav hauj lwm (hom S los yog G). Nws raug ntsia ze rau ntawm qhov chaw, muaj qhov sib txawv ntawm kev mus ncig tam sim no ntawm 100 lossis 300 mA, thiab lav tias cov khoom siv RCD txuas ntxiv ntawm cov neeg siv khoom yuav mus thawj zaug.
Yog li, kev tiv thaiv kab hluav taws xob niaj hnub no yog ua raws li kev txheeb xyuas qhov tsis raug thiab txiav cov ntu ntawm cov tshuab ua haujlwm hauv cov qauv ib txwm muaj.
RCD ua haujlwm li cas?
RCD tseem hu ua qhov seem tam sim no hluav taws xob tawg. Lub hom phiaj tseem zoo ib yam: tua hluav taws xob thaum muaj hluav taws xob tam sim no tshwm sim. Lub ntsiab tseem ceeb ntawm lub cuab yeej yog lub toroidal transformer nrog ob peb lem ntawm nruab nrab thiab theem nyob ntawm tej txuas nyob rau hauv opposite lus qhia. Qhov tshwm sim magnetic teb thaum lub sij hawm ib txwm ua hauj lwm ntawm lub cuab yeej tseem sib npaug zos rau xoom. Cov dej ntws mus rau hauv av ua rau muaj kev tsis sib haum xeeb, qhov hluav taws xob tshwm sim nyob rau hauv qhov thib ob winding, thaum ncav cuag ib qho nqi, cov hluav taws xob hluav taws xob tau raug kaw siv qhov pib thiab actuator mechanisms.
Ib qho RCD xav tau lub tsheb npav PE hauv av. Tsis tas li ntawd, thaum muaj peev xwm tshwm sim ntawm lub cev ntawm cov khoom siv hluav taws xob vim yog cov rwb thaiv tsev puas, tsis muaj qhov xau tam sim no, thiab thaum koj kov nws thiab cov khoom siv hauv av (cov cua kub cua sov, cov kav dej), koj tuaj yeem tau txais kev ceeb toom hluav taws xob. Hauv qhov no, cov cuab yeej tiv thaiv yuav ua haujlwm, tab sis nws yuav zoo dua yog tias nws los ntawm kev xau mus rau hauv av.
Rau kev ua haujlwm ruaj khov ntawm cov cuab yeej tiv thaiv, yuav tsum tau muab tso rau hauv av. Thaum ua hauj lwm raws li cov tswv yim no, RCD yuav tawg lub Circuit Court txawm ua ntejkov cov ntaub ntawv hlau ntawm cov khoom siv lossis cov khoom siv hauv tsev.
Type of RCDs
RCDs raug cais raws li lawv txoj haujlwm:
- AC - teb rau qhov tshwm sim tam sim ntawd lossis maj mam nce hloov pauv tam sim no.
- A - Ntxiv rau qhov ua rau qhov sib txawv ntawm qhov sib txawv tsis tu ncua, uas yuav tshwm sim tsis tau xav txog lossis nce zuj zus.
- B - teb rau ncaj qha thiab hloov pauv hloov pauv hloov pauv hloov pauv tam sim no.
- S - xaiv RCD nrog ncua sijhawm ntxiv rau kev mus ncig.
- G - zoo ib yam li S, tab sis qeeb qeeb.
RCD xaiv qhov twg?
Ripple tam sim no hauv cov xwm txheej hauv tsev tshwm sim los ntawm lub tshuab ntxhua khaub ncaws, teeb pom kev zoo dimmers, TVs, khoos phis tawj, cov cuab yeej hluav taws xob thiab lwm yam khoom siv nrog cov khoom siv hluav taws xob hloov. Qhov tsis muaj kev sib cais transformers hauv cov khoom siv nrog thyristor tswj tau ua rau muaj kev pheej hmoo ntawm kev xau ncaj qha lossis hloov pauv hloov pauv tam sim no. Yog li ntawd, yog tias ua ntej nws txaus los teeb tsa hom AC, tam sim no xav tau hom A lossis B.
Qhov twg rau nruab RCD?
- Txoj kev nkag tau rau pej xeem hauv cov tsev uas tsis muaj kev pheej hmoo ntawm hluav taws xob ntau ntxiv.
- Nyob rau hauv cov hluav taws xob hluav taws xob uas muaj kev pheej hmoo ntawm hluav taws xob poob (cov chav nrog cov av noo ntau dhau, pab pawg hluav taws xob, cov khoom siv hauv tsev, thiab lwm yam).
- Ntawm cov tswv yim tseem ceeb los tiv thaiv kev phom sij hluav taws. Feem ntau ib qho kev xaiv RCD raug teeb tsa ntawm no.
- Nyob hauv tsev hloov chaw, hauv tsev vaj huam sib luag, hauv ib lub tsev.
- BRadial fais fab mov tshuab: xaiv RCD dav dav thiab cais tawm rau cov ceg kab, nrog rau kev xaiv ntawm cov tsis tau lees paub kev xaiv ua haujlwm.
- Nyob rau theem tiv thaiv ze, piv txwv li, 10 thiab 30 mA, 30 thiab 40 mA, thiab lwm yam, qhov kev xaiv tam sim no ntawm RCD tsis zoo li vim qhov kev teb ceev ceev. Rau cov nqi qhia, nws tau muab yog tias koj xaiv RCD xaiv ntawm 100mA thiaj li tseem muaj sijhawm ncua sijhawm.
- Vim qhov kev laus ntawm cov rwb thaiv tsev, tsis tas yuav maj mam nce hauv cov dej ntws tawm.
- Nrog rau qhov nce tam sim no los ntawm kev puas tsuaj los ntawm rwb thaiv tsev, ib qho RCD cov kab ke hauv Circuit Court tuaj yeem mus. Qhov no tshwm sim vim qhov ceev thiab tseem ceeb tshaj ntawm cov chaw ib zaug ntawm ob peb theem ntawm kev tiv thaiv.
Yuav tsum siv RCDs xaiv
Xaiv RCD ua nws txoj haujlwm ntawm kev tiv thaiv hluav taws, yog tias koj siv cov kev hloov kho nrog lub sijhawm ncua - S lossis G. Lawv yuav tsum tau nce ntxiv rau kev tiv thaiv luv luv, hloov lub peev xwm, dynamic thiab thermal kuj, thiab lwm yam.
Feem ntau, xaiv qhov hluav taws kub tiv thaiv RCD nrog lub siab xau tam sim no tau teeb tsa ntawm lub ntsiab lus nkag.
RCD yuav tsum tsis txhob siv nyob rau hauv Circuit Court uas yuav tsum tsis txhob muab tua tam sim ntawd, vim qhov no tuaj yeem ua rau muaj xwm txheej kub ntxhov (tshuaj tua hluav taws lossis lub tswb nrov, phom sij rau cov neeg ua haujlwm, thiab lwm yam).
Ntxiv rau RCDs, Circuit Court breakers yuav tsum muaj kev xaiv tam sim no. Yuav tsum yog thawjua haujlwm ze rau thaj tsam ntawm overload lossis luv luv Circuit Court. Nyob rau hauv cov ntaub ntawv no, lub Circuit Court breakers ua hauj lwm ua ntej lub luv luv-circuit tam sim no mus txog tus nqi txwv. Qhov no yog qhov tsim nyog los tiv thaiv overloading cov ntu txuas txuas, txij li tam sim no dhau los ntawm kev sib cuag ntawm lawv cov khoom tiv thaiv.
Hom xaiv RCDs
Rau ib qho kev xaiv RCD, nws yog ib qho tseem ceeb kom ncua sij hawm kom cov khoom siv dav dav nyob hauv qab daim duab ua haujlwm. Nyob rau hauv rooj plaub no, lub cuab yeej nrog lub sij hawm ncua sij hawm kaw hla lub xau tam sim no los ntawm nws tus kheej thiab tsis ua haujlwm. Lub ncua ncua sij hawm rau cov qauv yuav txawv. Rau cov khoom cim S, nws yog 0.15-0.5 s, piv txwv li, RCD 63a 100mA yog xaiv, muaj peev xwm kho qhov ncua sij hawm. Qhov kev xaiv yuav yog qhov zoo tshaj plaws yog tias lawv tau teeb tsa ntawm cov tswv yim ntawm chav tsev lub zog cable. Qee cov qauv txawv teb chaws muaj lub sijhawm qeeb dua. Lawv yog tsim los tua lub Circuit Court thaum muaj hluav taws kub. Qhov kev tiv thaiv tau muab tua ntev dua, nws yuav ua rau lub rwb thaiv tsev ntau dua.
Thaum kos G, lub cuab yeej hluav taws kub hauv 0.06-0.08 s. Lub cuab yeej ceev txaus los teb cov teeb meem hauv network. Nws yuav tsum tau nruab hauv qab RCD hom S xaiv. Nrog rau kev tiv thaiv ob-theem, nws tuaj yeem ntsia tau rau ntawm cov tswv yim tseem ceeb, vim tias qhov ceev ntawm RCD txuas hauv qab no tseem siab dua.
Yog tias muaj ntau pawg thauj khoom hauv lub network, ib qho kev tiv thaiv cais tau txuas rau pem hauv ntej ntawm txhua tus, thiab ib qho kev xaiv yog txuas nrog cov tswv yimKev tiv thaiv hluav taws RCD. Tom qab ntawd, yog tias ib qho ntawm cov kab tsis ua haujlwm, tsuas yog nws yuav raug de-energized, thiab tus so yuav nyob twj ywm. Nrog rau cov kab kos zoo sib xws, nws yooj yim dua los kuaj xyuas qhov ua tsis tau zoo. Yog tias ib qho RCD ib txwm ua tsis tau lossis tsis teb cov teeb meem hauv Circuit Court, ces xaiv RCD (300 mA lossis 100 mA) yuav tawm mus thiab kaw tag nrho lub network.
Txhawm rau kom muaj kev xaiv, cov ntsuas ntsuas hauv qab no yuav tsum tau:
- teem caij mus ncig ntawm qhov xaiv RCD, yog tias nws muab rau qhov ua tau;
- teeb tsa qhov yuav tsum tau mus txawv tebchaws nyob ntawm qhov loj ntawm qhov xau tam sim no.
Cov yam ntxwv ntawm kev xaiv RCDs yuav tsum muaj tsawg kawg yog 3 zaug loj dua li lwm tus. Tsuas yog nyob rau hauv rooj plaub no tus ntaus ntawv yuav tau lees tias ua hauj lwm.
RCD parameters
Ob lub sijhawm RCD yog txhais los ntawm Lavxias tus qauv:
- lub sijhawm tawg - lub sijhawm los ntawm qhov pom ntawm qhov tawg tawg tam sim no ∆i mus rau lub sijhawm arc raug tua;
- Tshuaj-tawm lub sijhawm txwv rau hom S ntaus ntawv - lub sijhawm ncua ntawm qhov pib ntawm ∆i thiab qhib kev sib cuag.
Qhov kawg qhov ntsuas txiav txim siab xaiv ntawm RCD. Nws tus nqi txwv yog 0.5 s. Nyob rau hauv cov ntaub ntawv no, nws yuav tsum tau coj mus rau hauv tus account tias rau kev tiv thaiv ntawm tib neeg, qhib yuav tsum tshwm sim nyob rau hauv 10-30 ms, tiv thaiv ignition ntawm lub rwb thaiv tsev - txog li 500 ms. RCD hom S xaiv tau dav siv nyob qhov twg nws yog qhov tsim nyog los tshem tawm cov tswb cuav los ntawm kev cuam tshuam los yog lub zog surges.
Raws li qhov nrawm ntawm kev sib txuas ntawm RCD networkcais raws li hauv qab no:
- siv dav - tsis ncua;
- type G - 10-40ms;
- S hom - 40-500ms.
Cov dej ntws tawm ib txwm tshwm sim hauv cov hluav taws xob hluav taws xob. Nyob rau hauv tas li ntawd, lawv yuav tsum tsis txhob ntau tshaj 1/3 ntawm nominal ∆i ntawm lub ntaus ntawv. Nws ntseeg tau tias rau 1 A ntawm cov khoom thauj muaj 0.4 mA ntawm cov neeg siv khoom xau tam sim no, thiab rau 1 m ntawm qhov ntev ntawm theem xaim - 10 μA. Cov cuab yeej tiv thaiv tau hloov kho raws li tag nrho cov dej ntws tawm tam sim no. Yog tias qhov no tsis ua tiav, feem ntau qhov tsis zoo yuav tshwm sim. Hauv qhov no, nws yuav tsum nco ntsoov tias lub cuab yeej nrog ∆i=100 mA yuav tsis tiv thaiv ib tus neeg los ntawm hluav taws xob poob lawm.
Thaum tsim kev sib txuas hluav taws xob, koj tsis tuaj yeem hais qhia hom RCD kom txog thaum cov kws tshaj lij xav tau. Tab sis koj yuav tsum ua kom pom tseeb qhov koj xaiv ua ntej. Nws yog ib qho tseem ceeb uas qhov ntsuas tam sim no ntawm lub cuab yeej siab dua li qhov xav tau tam sim no. Tsis tas li ntawd, RCD tsuas yog ntsia tau rau hauv ib qho kev sib koom ua ke nrog lub tshuab hluav taws xob. Koj tuaj yeem nruab ib lub tshuab sib txawv tsis yog ob qho khoom siv. Nws yuav raug nqi tsawg, tab sis koj yuav tsum xaiv qhov tsis raug.
RCD tiv thaiv nyob rau hauv ob-xaim tes hauj lwm uas tsis muaj kev tiv thaiv tus neeg xyuas pib. Tab sis nws ua haujlwm tsuas yog tom qab kov qhov chaw txaus ntshai.
Qhov hluav taws kub RCD xaiv?
Selective RCD 63A, 300mA feem ntau yog nruab rau ntawm cov khoom siv los tiv thaiv hluav taws.
Ntau tus siv cov qauv siv dav dav nrog 30mA tiv thaiv cov cuab yeej teeb tsa hauv tsev. Ntawm no, "ib feem" xaiv muaj nuj nqi yog ua los ntawm qhov sib txawv lojkhiav dej num. Qhov no txuag nyiaj ntawm tus nqi sib txawv. Tsis tas li ntawd, ib qho RCD ib txwm muab kev nyab xeeb zoo dua vim tias cov lus teb sai dua thaum ntes cov dej ntws tawm. Qhov sib txawv ntawm tus cwj pwm ntawm cov khoom siv yog tias cov khoom siv xaiv yuav tsis mus thawj zaug ntawm qhov sib txawv tam sim no sib npaug lossis ntau dua 300 mA. Cov xwm txheej zoo li no twb yog qhov txawv tshaj plaw thiab tsis muaj lus nug txog seb puas yuav mus rau pawg tswj hwm, uas tej zaum yuav nyob ntawm txoj kev ncej. Nrog rau qhov tam sim no loj, ib qho RCD zoo tib yam yuav ua haujlwm yog tias muaj xwm txheej tshwm sim ntawm kab. Ntawm no thiab yog li ntawd nws yuav pom tseeb qhov twg los nrhiav qhov tsis ua haujlwm.
Yog li, hluav taws RCD tuaj yeem ntsia tau ob qho tib si xaiv thiab cov qauv.
RCD Manufacturers
Pab Pawg Legrand yog lub chaw tsim khoom lag luam thoob ntiaj teb ntawm kev tsim hluav taws xob. Cov haujlwm ua haujlwm tau lees paub los ntawm cov kab lis kev cai ntau tshaj plaws thiab kev nqis peev loj hauv kev tsim cov khoom siv hluav taws xob tshiab. Rau Russia, cov pab pawg muab tag nrho cov khoom siv hluav taws xob, los ntawm cov qhov (socket) thiab hloov mus rau cov txheej txheem tswj kev nyuaj tshaj plaws.
Legrand xaiv RCD yog hom hluav taws xob thiab electromechanical (qhia rau pem hauv ntej vaj huam sib luag). Nyob ntawm seb lub version, nws yog ntsia rau sab los yog hauv qab ntawm lub Circuit Court breakers. Kho lub sij hawm ncua (0-1, 3 s) thiab rhiab heev. Ua ke nrog rab phom tshuab, lawv tau siv los ua cov cuab yeej tiv thaiv siab heev lossis cov cuab yeej tiv thaiv yooj yim.
RCD tus nqi tseem siab, zoo ib yam li lwm hom.
Los ntawm ABB, RCDs feem ntau sawv cev los ntawm F 200 series - los ntawm 16 A txog 125 A. Rau ib lub tsev network, RCD 63A, 100mA xaiv yog txaus. Rau cov dej xau rau cov khoom siv hauv tsev, 30 mA ntaus ntawv feem ntau yog siv. Raws li kev tiv thaiv hluav taws ntawm cov tswv yim ntawm ib lub tsev ntiag tug, ib qho kev xaiv RCD ABB (63A, 300mA) plaub-ncej rau peb-theem network yog siv, ua ib qho kev ntseeg siab tshaj plaws. Nws tsis yog qhov zoo tshaj plaws rau Legrand cov khoom lag luam. Rau ib chav tsev nrog ib lub tswv yim ib-theem, yuav muaj ob-ncej ntaus ntawv. Daim duab hauv qab no qhia tau hais tias xaiv RCD ABB 63A, 300mA.
Qhov siab tshaj plaws tam sim no uas lub cuab yeej tuaj yeem tiv taus yog los ntawm 3 txog 10 kA (qhia rau ntawm lub vaj huam sib luag pem hauv ntej). Nws yog luv luv, tsis ua haujlwm tam sim no. RCD tuaj yeem nres kom txog thaum lub tshuab txiav tawm lub voj voog.
Lub tuam txhab yog ib qho ntawm cov thawj coj, tab sis tus nqi siab heev. Cov neeg siv khoom feem ntau nyiam cov qauv abb vim tias kev nyab xeeb yog qhov tseem ceeb tshaj plaws. ABB DDA200 AP-R hom A thiab AC sib txawv thaiv yog muaj. Nws muaj qhov ncua sij hawm mus txawv tebchaws ntawm 10ms, txawm hais tias nws tsis yog ABB xaiv RCD. Nws cov yam ntxwv nkhaus nkhaus yog nyob nruab nrab ntawm kev xaiv thiab cov pa RCDs. Cov cuab yeej muaj zog tiv thaiv lub tswb cuav piv rau cov khoom siv dav dav.
Qhov feem pua ntawm kev tsis lees paub rau ABB xaiv RCD, nrog rau lwm yam khoom, tsuas yog 2%, vim tias muaj qhov ua tau zoo tsis muaj teeb meem hauv kev ua haujlwm. Electromechanical cov cuab yeej muaj kev ntseeg siab ntau dua li cov khoom siv hluav taws xob thiab muaj qhov zoo ntawm txhua yam, raunqe kev zam. RCDs nrog lub tshuab hluav taws xob tau pib tshwm sim, tsis yog qhov qis dua hauv kev ntseeg siab rau ib qho khoom siv tshuab.
Ntawm lub khw koj tuaj yeem pom cov khoom lag luam uas yog ib nrab ntawm tus nqi, thiab qhov zoo tsis qis dua ABB. Lub tuam txhab tseem tsim cov FH 200 series, uas muaj tus nqi qis dua, tab sis poob qis hauv qhov zoo rau F 200 cov khoom, tshwj xeeb tshaj yog, nws tsis muaj qhov kev ntseeg siab ntawm tus neeg xyuas pib fastening hu uas sai sai pib dangle, uas cuam tshuam rau qhov zoo. ua haujlwm.
Yog tias koj yuav xaiv ABB RCD, tsuas yog hauv khw tshwj xeeb, thiab tsis nyob hauv qhov chaw dubious. Qhov cuav yog qhov txaus ntshai vim nws tsis tuaj yeem tiv thaiv tus neeg kom raug. Cov khoom siv Modular, uas kuj suav nrog RCDs, tau txais kev saib xyuas zoo los ntawm tus kheej-punchers vim tus nqi siab.
Cov pab pawg hauv tsev ntawm cov tuam txhab IEK tsim txog 7,000 yam khoom ntawm cov khoom lag luam uas ua tau raws li cov qauv thoob ntiaj teb thiab ua kom ntseeg tau kev ua haujlwm ntawm cov phiaj xwm hluav taws xob.
RCDs raug rau qhov kev thov siab. Ntawm qhov tod tes, lawv yuav tsum ua haujlwm ruaj khov, tiv thaiv tib neeg los ntawm hluav taws xob poob siab thiab xaim hluav taws xob los ntawm kev pheej hmoo ntawm hluav taws kub. Tab sis nyob rau tib lub sijhawm, cov khoom siv tau nruab rau ntawm cov theem sib txawv ntawm cov hluav taws xob hluav taws xob yuav tsum ua kom xaiv, tua cov ntu ntawm tus kheej. Cov xwm txheej no, nrog rau GOST 51326.1, sib haum rau xaiv RCD IEK hom VD1 63S.
Cov khoom lag luam yog sawv cev los ntawm cov ntsuas tam sim no ntawm 25-80A, thiab cov seem seem yog 100mA thiab 300mA. Cov khoom lag luam pheej yig dua li cov npe nrov thiab muaj davsiv los ua kev qhia txog hluav taws tua hluav taws. Nyob rau tib lub sijhawm, kev tiv thaiv kev xaiv tau lees paub los ntawm kev txiav tawm siab tam sim no thiab lub sijhawm qeeb rau kev sib txuas ntawm circuits.
Kev xaiv cov cuab yeej tiv thaiv
Thaum hluav taws xob tau siv hauv txoj kev yooj yim, lub sinusoidal tam sim no ntws los ntawm Circuit Court. Cov xau yuav zoo ib yam thiab AC hom khoom siv tau ntawm no.
Hauv cov cuab yeej siv hauv tsev niaj hnub no, cov kev tswj xyuas theem txiav tau siv ntau zuj zus. Ib qho AC hom ntaus ntawv yuav tsis teb rau lawv, thiab ntawm no nws yog qhov zoo dua los siv RCD ntawm hom A, uas kuj teb rau qhov tam sim no sinusoidal. Cov cuab yeej siv tau ua ke, piv txwv li, hom AC yog qhov tsim nyog rau lub teeb pom kev zoo nrog cov teeb pom kev zoo, thiab hom A yog qhov tsim nyog rau cov qhov (sockets) uas cov khoom siv nrog kev tswj cov mem tes tuaj yeem txuas nrog. nrog kev tswj kev ci ntsa iab los ntawm theem txiav tawm, koj tseem yuav tau hloov AC hom ntaus ntawv nrog A. Txwv tsis pub, nws yuav tsis ua haujlwm.
Txhawm rau cais kev ua haujlwm los ntawm theem ntawm cov hluav taws xob hluav taws xob, nws yuav tsum siv cov khoom siv xaiv. Hom S yog ntsia rau ntawm lub ntsiab lus, G ntawm qib thib ob, thiab tom qab ntawd cov khoom siv tam sim ntawd.
RCD raug xaiv ib kauj ruam siab dua hauv qhov ntsuas tam sim no tshaj li qhov kev sib txuas ntawm cov hluav taws xob txuas nrog nws, uas tuaj yeem ua haujlwm tau ntev thaum lub sijhawm thauj khoom ntau dhau. Yog tias muaj lub tshuab 50 A ntawm cov khoom siv, xaiv RCD 63A yuav haum rau nws.
Raws li cov kev cai ntawm cov qauv, qhov nominal voltage qhov tseem ceeb yog qhia rau pem hauv ntej vaj huam sib luag ntawm cov twj paj nruag, thiabtseem nruam thiab tawg tam sim no ∆i. Yog tias muaj lub npe ntawm lub sinusoid, qhov no yog hom AC. Lub xub ntiag ntawm ob lub voj voog zoo ib nrab nyob rau hauv nws txhais tau tias hom A. Xaiv RCDs yog cim los ntawm cov ntawv S thiab G. Qhov ntsuas luv luv tam sim no tau qhia hauv lub thawv. Cov cuab yeej yuav tsum tiv taus nws qhov nce mus txog qhov siab tshaj plaws kom txog thaum lub tshuab tig tawm. Feem ntau qhov tam sim no tsis muaj sijhawm kom ncav cuag tus nqi txwv. RCD disconnects lub Circuit Court nrog ib tug tsis xws luag ua ntej, kom txog rau thaum tus neeg xyuas pib tau sov thiab lub rwb thaiv tsev tsis ignited.
Zaj lus
Hauv kev siv hluav taws xob hauv tsev, kev xaiv tam sim no thiab lub sijhawm yog siv. Txhawm rau ua qhov no, cov cuab yeej tiv thaiv tau teeb tsa hauv koob raws li daim duab duab ntoo, qhov twg ib qho kev hloov pauv ntau. Lub hauv paus ntawm lub hauv paus ntsiab lus ntawm kev lag luam yog txo lub sij hawm ntawm tam sim no ntws los ntawm lub cev nrog ncaj qha los yog indirect kev sib cuag nrog lub ntsiab ntawm hluav taws xob installation nyob rau hauv voltage. RCD xaiv tau nruab rau ntawm qhov nkag thiab ua haujlwm tua hluav taws.
