Txawv tam sim no. Txawv tshuab: yam ntxwv, lub hom phiaj

Rau yooj yim to taub ntawm lub differential tam sim no yuav tsum raug xam tias yog ib lub cev txheej txheem. Thaum muaj ib tug kov ntawm lub insulated kev txoj kev, yog vim li cas tsis muaj hluav taws xob poob siab? Cov lus teb no yog cuab kev: kev rho tawm tsis pub tam sim no khiav los ntawm tib neeg lub cev. Tiam sis yog tias liab qab neeg xyuas pib, embark rau ib tug insulating substrate thiab kov cov hlau? Cov nyhuv yog tib yam - yog tsis muaj hluav taws xob poob siab. Lub substrate tsis xauv Circuit Court los ntawm lub cev mus rau hauv av.

Lub tswvyim ntawm differential tam sim no

Nyob rau hauv cov xwm muaj ib tug lub cev txheej txheem xws li differential tam sim no. Cov tswvyim no yog ib tug vector kom muaj nuj nqis, qhia raws li lub sum ntawm cov currents tam sim no nyob rau hauv lub Circuit Court, noj nyob rau hauv qhov kev txiav txim ntawm mean square. Yuav kom nyob tam sim no txawv, ib lub cev txheej txheem los mus tshwm sim, hu ua to tam sim no. Tab sis nws yog tsim nyog los tau complied nrog ib yam kev mob: cov khoom tsev, nyob qhov twg muaj ib tug to tam sim no yuav tsum tau kev cob cog rua rau hauv av. Txwv tsis pub, yog hais tias tus cev tsis grounded, ces qhov tshwm sim ntawm to tam sim no tsis ua rau ib tug txawv tam sim no. Thiab residual tam sim no Circuit Court breaker (RCD) tsis ua hauj lwm.

Kev sib txuas lus nruab nrab ntawm cov differential thiab cov to tam sim no

Thaum lub tam sim no to tshwm sim nyob rau hauv lub Circuit Court, nws hais kom lub ntsiab muaj lub conductive khoom (hlau housings rau cov khoom siv, cov cua kub kav, thiab lwm yam) Los ntawm cov qhov chaw nyob rau hauv voltage (hluav taws xob circuits, nyob ntawm tej). Thaum lub sij hawm cov luv luv-to qhov chaw tsis muaj. Thiab yog li ntawd yog tsis muaj tseeb ntawm cov Circuit Court kev kawm kev ua txhaum (cuab nws lesion).

Txij li thaum lub differential tam sim no thaum nws qhia lej nruab nrab yog cov sib txawv (vector tus nqi) ntawm cov tam sim no nyob rau qhov twg los tso zis tam sim no thiab tom qab lub load, nws yog to taub hais tias nws yog yuav luag zoo tib yam rau lub to tam sim no. Tab sis yog hais tias tus tom kawg tiag tiag tshwm sim nyob rau hauv kev ua txhaum, xws li rwb thaiv tsev, cov pwm ib puag ncig, los ntawm kev uas nws muaj peev xwm dhau, los yog ib yam dab tsi lwm tus, cov differential tam sim no zoo nkaus li thaum lub kev twb kev txuas nrog lub ntiaj teb.

Dawm taw thiab uas tsis yog-dawm taw differential currents

Nyob rau hauv tam sim no tripping (los yog dawm taw) twb paub lawm ib tug txawv tam sim no txaus uas tau nyob rau hauv ib tug disconnection VDT txia nyob rau hauv cov saw hlau.

Tus tam sim no txaus uas yog permissible nyob rau hauv ib tug Circuit Court ntaus ntawv (RCD) thiab nws cov actuation tsis tshwm sim no yog hu ua differential uas tsis yog-dawm taw tam sim no.

Lub loaded Circuit Court ua hauj lwm mem tes-hom ntaus ntawv: rectifiers, discrete cov pab kiag li lawm rau lub hwj chim tswj - tag nrho cov niaj hnub khoom siv, muaj cov keeb kwm yav dhau currents differential. Tab sis cov no currents yog tsis currents kev puas tsuaj, thiab ib tug hluav taws xob Circuit Court nyob rau hauv cov ntaub ntawv no yuav tsis raug kaw. Yog li ntawd, lub RCD dawm taw Harbor yog xaiv xws li tsis mus li cas rau cov kev khiav hauj lwm tus nqi ntawm cov keeb kwm yav dhau, thiab tig tua lub to tam sim no tshaj cov nqi no.

RCD los yog differential Tshuab

Nyob rau hauv thiaj li yuav tiv thaiv rau hauv Circuit Court tiv thaiv lub ntiaj teb txhaum currents loj kom muaj nuj nqis, tsim tshwj xeeb Circuit Court tej fais fab. Tsav ntaus ntawv pheej mus rau lub tswj Circuit Court rau ib tug hluav taws xob to. Thaum cov vector sum ntawm cov kab currents qhov tseem ceeb yuav tsum ntau dua zero thiab nkag mus rau hauv kev nrhiav kom tau txwv, nws tam sim ntawd kaw rau hauv Circuit Court. Tej systems teem thiab nyob rau hauv ib-theem thiab peb-theem kab.

Cov yam ntxwv txawv keyboards

Ntau yam kev hloov kho kev tiv thaiv pab kiag li lawm txawv los ntawm txhua lwm yam los ntawm:

• tsim nta;
• txhais li cas to ntawm hluav taws xob;
• rhiab heev rau tej chaw;
• ceev.

Nyob rau hauv lub tsim nta yog:

• VDT ntaus ntawv (differential mus), nyob rau muaj yog tsis muaj kev tiv thaiv tiv thaiv siab currents. Lawv teb li cas rau to currents, tab sis mus rau tiv thaiv lawv cov tswvyim, li qhia siv kuj yuav tsum muaj xws li fuses.
• RCBOs apparatus qhov twg muab rau automatic hom mus. Cov no yog cov universal pab kiag li lawm nrog dual muaj nuj nqi - mus tiv thaiv luv luv Circuit Court thiab overload, raws li zoo raws li to control.
• BDT ntaus nrog tau pickup tshuab nyob rau kev twb kev txuas taw tes. Tus ntaus ntawv yog npaj yuav ntsia ua ke nrog rau hauv Circuit Court breaker. Nws tsim yog ua hauj lwm nyob rau hauv xws li ib tug txoj kev uas tsuas pub ib-lub sij hawm kev twb kev txuas mus rau lub tshuab.

Nyob rau hauv tus duab ntawm lub to currents tsim kev tiv thaiv pab pawg neeg pab kiag li lawm nram qab no hloov:

• AC - pab kiag li lawm khiav hauj lwm nrog alternating sinusoidal tam sim no. Lawv tsis teb txawv mem tes currents uas tshwm sim nyob rau lub caij thaum, rau Piv txwv li, fluorescent, teeb X-ray apparatus, pab kiag li lawm rau cov zauv ntaub ntawv tseg, thyristor converters.
• A - seev rau kev tiv thaiv los ntawm qhov pulsating thiab alternating tam sim no. Tsis txhob paub txog lub ncov mem tes differential to currents. Lawv ua hauj lwm nyob rau hauv hluav taws xob circuits xws li rectifiers, regulators positionally hloov dua siab tshiab. Tiv thaiv kom txhob lub ntiaj teb to pulsed hluav taws xob, uas muaj ib tug tsis tu ncua voltage tivthaiv.
• B - systems ua hauj lwm nrog nce mus nce los, qhov thiab pulsating to tam sim no.

Neeg txawv hloov muaj cov nram qab hom:

• Tsis tshua muaj rhiab heev system uas lov tes taw Circuit Court indirect contact.
• Systems nrog high-kev txiav txim siab zoo. Tiv thaiv, Yog hais tias muaj tau kov mus rau neeg xyuas pib.
• Hluav Taws Kub sib ntaus sib tua kev txiav txim.

Raws li rau lub sij hawm yuav tsum tau kev ntaus lub lag luam:

• Instant kev txiav txim.
• High Speed.
• Rau cov hom phiaj kev.
• Lig - xim hom.

tam sim no differential tiv thaiv ntawm lub selector pab kiag li lawm yuav lov tes taw tsuas yog tus ib feem ntawm cov khoom, nyob qhov twg lub cuam tshuam tshwm sim.

Yuav ua li cas puas muaj tus residual tam sim no Circuit Court breaker

RCD muaj li ntawm ib tug tub ntxhais nyob rau hauv daim ntawv ntawm ib tug nplhaib thiab ob coils. Cov windings yog raws nraim tib yam, uas yog ua los ntawm ib tug hlau ntoo khaub lig seem thiab tus xov tooj ntawm koj lem tib yam. Tom qab ib tug kauj tam sim no ntws nyob rau hauv lub load tswv yim taw qhia, thiab ntxiv los ntawm lub load rov qab mus rau lub thib ob winding. Txij li thaum txhua load kis tus nyob tam sim no, lub currents yog summed ntawm lub tswv yim thiab ntawm cov qhov tso zis ntawm Kirgofu yuav tsum sib npaug zos. Raws li ib tug tshwm sim, lub currents nyob rau hauv lub windings tsim tib magnetic flux qhia nyob rau hauv kev coj rov qab. Cov tsev offset txhua lwm yam thiab lub system nyob rau hauv tib lub xeev. Yog hais tias tsuas muaj ib tug to tam sim no, lub magnetic teb yuav tau sib txawv, yuav ua hauj lwm rau hauv lub differential tam sim no relay, uas yuav ua nyob rau hauv lub qhib ntawm qhov hluav taws xob hu. Cov hluav taws xob kab yuav raug kiag li de-energized.

Qhov uas siv tau kev nyab xeeb residual tam sim no ntaus ntawv

Nyob rau hauv niaj hnub siv thiab hluav taws xob khoom qhov chaw, raws li zoo raws li lub kho ntawm ntau dua kev siv li uas residual tam sim no. Qhov no yog tsis txhaum los ntawm ib tug nce nyob rau hauv lub ua hauj lwm muaj kev ruaj ntseg ntawm hluav taws xob tes hauj lwm, raws li zoo raws li ib tug txo nyob rau hauv kev raug mob. RCDs yog siv nyob rau hauv:

• pej xeem vaj tse: tsev kawm ntawv, kev cai vaj tse, tsev kho mob, cov chaw ntiav pw, cov kev ua si chaw;
• vaj tse thiab ib tug neeg pej xeem cov tsev apartment: tsev, cottages, hostels, ancillary vaj tse;
• khw muag khoom qhov chaw, tshwj xeeb tshaj yog ua rau lub hauv paus ntawm cov hlau lug;
• vaj tse rau cov thawj tswj lub hom phiaj;
• muaj qhauj.

Kev twb kev txuas cov kev xaiv schemes RCD

Txawv tam sim no tiv thaiv ntaus ntawv mus rau tsim ib tug txawv tus naj npawb ntawm kev soj ntsuam theem. Muaj ib theem, ob-theem thiab peb-theem residual tam sim no Circuit Court tej fais fab.

Yog hais tias txoj kab yog tib theem thiab yuav tsum tau kev cob cog rua rau nws thiab cov RCD ib Circuit Court breaker, nws ua rau tsis muaj qhov sib txawv nyob rau hauv tus, yuav ua li muab tso rau hauv thawj qhov chaw. Tag nrho cov pab kiag li lawm yog muab tso rau hauv Circuit Court tswv yim. Cias ntau yooj yim rau muab tso rau hauv thawj tsis siv neeg theem thiab residual tam sim no Circuit Court breaker tom qab. Txij li thaum lub load yog ces kev cob cog rua rau ob leeg hu RCD es tsis txhob ntawm theem - nyob rau hauv lub tshuab, es tsis txhob xoom - nyob rau hauv cov kev tiv thaiv ntaus ntawv.

Yog hais tias lub ntsiab kab yog muab faib ua ob peb kab nrog loads, lub RCD muab thawj, thiab ces rau txhua txoj kab ntawm ib tug Circuit Court breaker. Nws yog ib qho tseem ceeb tias cov nyob tam sim no uas yuav kis tau tus RCD, yog ntev tshuab operating tam sim no, txwv tsis pub tsis tau los tiv thaiv lub ntaus ntawv nws tus kheej.

xaus

Tag nrho cov ua hauj lwm rau lub koom haum ntawm hluav taws xob thaiv thiab Circuit Court kev tiv thaiv systems yog zoo tshaj plaws sab laug mus rau ib tug kws electrician! Tsuas yog koj yuav sib sau ua ke nrog lawv ob txhais tes yooj yim hluav taws xob circuits thiab txuas kev nyab xeeb pab kiag li lawm, nruj me ntsis raws li cov lus qhia. Feem ntau, txhua tus hu muaj ib tug coj daim ntawv lo.