Xov Xwm - Dab tsi yog Qhov Tsawg Voltage Tam Sim No Transformer thiab Nws Ua Haujlwm Li Cas?

Ib qho cuab yeej transformer hu ua alow voltage tam sim no transformer(CT) yog tsim los ntsuas qhov siab hloov tam sim no (AC) hauv ib lub voj voog. Cov cuab yeej no ua haujlwm los ntawm kev tsim kom muaj qhov sib npaug thiab muaj kev nyab xeeb dua tam sim no hauv nws qhov thib ob winding. Cov ntsuas ntsuas tau yooj yim ntsuas qhov ntsuas tam sim no. Lub luag haujlwm tseem ceeb ntawm atam sim no transformeryog mus nqis siab, txaus ntshai tam sim no. Nws hloov lawv mus rau hauv kev nyab xeeb, tswj tau qib zoo meej rau kev saib xyuas, ntsuas, thiab kev tiv thaiv kab ke.

Ntsiab Cai

Tsawg voltagetam sim no transformer(CT) ntsuas hluav taws xob siab nyab xeeb. Nws hloov qhov loj, txaus ntshai tam sim no mus rau ib qho me me, muaj kev nyab xeeb.
CTs ua haujlwm siv ob lub tswv yim tseem ceeb: cov hlau nplaum ua hluav taws xob thiab cov xov tooj tshwj xeeb suav. Qhov no pab lawv ntsuas hluav taws xob kom raug.
Muajntau hom CTs, zoo li qhov txhab, toroidal, thiab bar hom. Txhua yam haum rau qhov kev xav tau sib txawv rau kev ntsuas hluav taws xob.
Tsis txhob txiav CT cov xov hlau thib ob thaum hluav taws xob ntws. Qhov no tuaj yeem tsim qhov siab heev, txaus ntshai voltage thiab ua rau muaj kev phom sij.
Xaiv CT txoj cai yog qhov tseem ceeb rau kev ntsuas kom raug thiab kev nyab xeeb. Qhov tsis ncaj ncees lawm CT tuaj yeem ua rau cov nqi tsis raug lossis khoom siv puas tsuaj.

Yuav Ua Li Cas Tsawg Voltage Tam Sim No Transformer Ua Haujlwm?

Alow voltage tam sim no transformerua haujlwm ntawm ob lub hauv paus ntsiab lus ntawm physics. Thawj yog electromagnetic induction, uas tsim cov tam sim no. Qhov thib ob yog qhov hloov pauv, uas txiav txim siab qhov loj ntawm qhov tam sim no. Kev nkag siab txog cov ntsiab lus no qhia tau hais tias CT tuaj yeem ntsuas qhov ntsuas dej siab thiab ntsuas qhov tseeb li cas.

Lub hauv paus ntsiab lus ntawm Electromagnetic Induction

Ntawm nws cov tub ntxhais, qhov tsis tshua muaj hluav taws xob tam sim no transformer ua haujlwm raws liFaraday Txoj Cai ntawm Electromagnetic Induction. Txoj cai lij choj no piav qhia txog yuav ua li cas hloov pauv magnetic teb tuaj yeem tsim hluav taws xob tam sim no hauv ib qho chaw nyob ze. Cov txheej txheem nthuav tawm hauv ib ntu tshwj xeeb:

Ib qho alternating tam sim no (AC) ntws los ntawm thawj tus neeg xyuas pib lossis winding. Lub hauv paus Circuit Court no nqa qhov siab tam sim no uas yuav tsum tau ntsuas.
Covntws ntawm AC generates ib tug tas li hloov magnetic tebnyob ib ncig ntawm tus neeg xyuas pib. Aferromagnetic corenyob rau hauv CT qhia thiab concentrates no magnetic teb.
Qhov sib txawv ntawm qhov sib nqus no ua rau muaj kev hloov pauv hauv cov hlau nplaum sib nqus, uas dhau los ntawm qhov sib nqus winding.
Raws li Faraday Txoj Cai, qhov kev hloov pauv hauv cov hlau nplaum sib nqus ua rau muaj qhov hluav taws xob (electromotive force) thiab, yog li ntawd, ib qho tam sim no nyob rau hauv nruab nrab winding.

Nco tseg:Cov txheej txheem no tsuas yog ua haujlwm nrog kev hloov tam sim no (AC). Ib qho hluav taws xob ncaj qha (DC) ua rau qhov chaw sib nqus tsis tu ncua. Tsis muaj ibhloovNyob rau hauv sib nqus flux, tsis muaj induction tshwm sim, thiab lub transformer yuav tsis tsim ib tug thib ob tam sim no.

Lub luag hauj lwm ntawm lub Turns Ratio

Qhov kev hloov pauv yog tus yuam sij rau yuav ua li cas CT nqis qis tam sim no mus rau qib tswj tau. Qhov sib piv no piv cov xov tooj ntawm cov xaim xaim nyob rau hauv thawj winding (Np) rau cov xov tooj ntawm lub voj voog thib ob (Ns). Nyob rau hauv CT, qhov thib ob winding muaj ntau ntau lem dua li thawj winding.

Covtam sim no nyob rau hauv windings yog inversely proportional rau lub lem ratio. Qhov no txhais tau tias antau dua ntawm cov lem ntawm qhov thib ob winding tshwm sim nyob rau hauv proportionally qis dua theem nrab tam sim no. Qhov kev sib raug zoo no ua raws li covQhov tseem ceeb amp-tig sib npaug rau transformers.

Cov qauv lej rau qhov kev sib raug zoo no yog:

Ap / As = Ns / Np

Qhov twg:

Ap= Lub ntsiab tam sim no

As= Secondary Current

Np= Number of Primary Turns

Ns= Tus lej thib ob

Piv txwv li, CT nrog qhov ntsuas ntawm 200: 5A muaj qhov hloov pauv ntawm 40: 1 (200 faib los ntawm 5). Qhov kev tsim no ua rau cov tam sim no theem nrab uas yog 1/40th ntawm thawj tam sim no. Yog tias thawj qhov tam sim no yog 200 amps, qhov thib ob tam sim no yuav muaj kev nyab xeeb 5 amps.

Qhov piv txwv no tseem cuam tshuam rau CT qhov tseeb thiab nws lub peev xwm los tuav lub nra, hu ua "burden."Lub nra yog tag nrho impedance (kuj)ntawm cov metering li txuas nrog rau theem nrab winding. CT yuav tsum tuaj yeem txhawb nqa lub nra no yam tsis tau poob nws qhov tseeb.Raws li cov lus hauv qab no qhia, qhov sib txawv sib txawv tuaj yeem muaj qhov sib txawv qhov tseeb.

Muaj Qhov Ntsuas	Qhov tseeb @ B0.1 / 60Hz (%)
100:5 a	1.2
200:5 a	0.3

Cov ntaub ntawv no qhia tau hais tias xaiv CT nrog rau qhov tsim nyog lem piv yog qhov tseem ceeb rau kev ua tiav qhov kev ntsuas qhov tseeb rau ib daim ntawv thov tshwj xeeb.

Cov Cheebtsam tseem ceeb thiab cov hom tseem ceeb

Tam sim no Transformer chaw tsim tshuaj paus

Txhua qhov Low Voltage Tam sim no Transformer sib koom ua ke nrog cov qauv, tab sis cov qauv sib txawv muaj nyob rau cov kev xav tau tshwj xeeb. Nkag siab txog cov ntsiab lus tseem ceeb yog thawj kauj ruam. Los ntawm qhov ntawd, peb tuaj yeem tshawb txog hom tseem ceeb thiab lawv cov yam ntxwv tshwj xeeb. Lub Low Voltage Current Transformer yog tsim los ntawmpeb qhov tseem ceebuas ua hauj lwm ua ke.

Core, Windings, thiab rwb thaiv tsev

Kev ua haujlwm ntawm CT yog nyob ntawm peb qhov tseem ceeb ua haujlwm sib haum xeeb. Txhua feem plays lub luag haujlwm tseem ceeb hauv kev ua haujlwm ntawm transformer.

Core:Ib tug silicon steel core tsim txoj kev sib nqus. Nws concentrates lub magnetic teb generated los ntawm cov thawj tam sim no, kom ntseeg tau tias nws zoo txuas nrog lub thib ob winding.
Cua txias:Lub CT muaj ob txheej windings. Lub hauv paus winding nqa lub siab tam sim no los ntsuas, thaum lub caij nplooj ntoos hlav winding muaj ntau qhov kev sib hloov ntawm cov hlau los tsim cov kauj ruam-down, muaj kev nyab xeeb tam sim no.
Rwb thaiv tsev:Cov khoom no cais cov windings ntawm lub hauv paus thiab los ntawm ib leeg. Nws tiv thaiv hluav taws xob luv luv thiab ua kom muaj kev nyab xeeb thiab siv tau ntev ntawm lub cuab yeej.

Hom mob

Ib hom kab mob CT suav nrog lub hauv paus winding uas muaj ib los yog ntau dua lem mus tas li ntsia rau ntawm cov tub ntxhais. Qhov kev tsim no yog tus kheej muaj. Lub high-tam sim no Circuit Court txuas ncaj qha mus rau lub terminals ntawm no thawj winding. Cov kws kho mob siv qhov mob-hom CTs raumeej metering thiab tiv thaiv hluav taws xob systems. Lawv feem ntau xaiv rauhigh-voltage daim ntaub ntawv qhov twg precision thiab kev ntseeg siab yog qhov tseem ceeb.

Toroidal (Qhov rai) Hom

Hom toroidal lossis "qhov rais" yog qhov tsim ntau tshaj plaws. Nws nta ib lub ntsej muag zoo li lub ntsej muag nrog tsuas yog qhov thib ob winding qhwv ib ncig ntawm nws. Thawj tus neeg xyuas pib tsis yog ib feem ntawm CT nws tus kheej. Xwb, lub high-tam sim no cable los yog busbar hla los ntawm qhov chaw qhib, los yog "qhov rais," ua raws li ib tug tib-tig thawj winding.

Cov txiaj ntsig tseem ceeb ntawm Toroidal CTs:Qhov kev tsim no muaj ntau yam txiaj ntsig dua lwm hom, suav nrog:

Kev ua haujlwm siab dua, feem ntau ntawm95% thiab 99%.

Kev tsim kho ntau dua thiab lub teeb yuag.

Txo hluav taws xob cuam tshuam (EMI) rau cov khoom nyob ze.

Tsis tshua muaj neeg kho tshuab humming, ua rau kev ua haujlwm ntsiag to.

Bar-hom

Ib hom bar-hom tam sim no transformer yog ib qho kev tsim tshwj xeeb uas cov thawj winding yog ib feem ntawm lub cuab yeej nws tus kheej. Hom no suav nrog ib qho bar, feem ntau ua los ntawm tooj liab lossis txhuas, uas dhau los ntawm qhov nruab nrab ntawm cov tub ntxhais. Qhov no bar ua raws li tusib leeg-tig thawj tus neeg xyuas pib. Tag nrho cov sib dhos yog nyob rau hauv ib tug ruaj khov, insulated casing, ua rau nws ib tug robust thiab self-muaj chav tsev.

Kev tsim kho ntawm bar-hom CT tsom rau kev ntseeg tau thiab kev nyab xeeb, tshwj xeeb tshaj yog nyob rau hauv cov tshuab hluav taws xob. Nws cov ntsiab lus tseem ceeb suav nrog:

Primary Conductor:Cov cuab yeej nta ib qho tag nrho insulated bar uas ua hauj lwm raws li thawj winding. Qhov no rwb thaiv tsev, feem ntau yog ib tug resin molding los yog ib tug bakelized ntawv raj, tiv thaiv high voltages.
Secondary Winding:Ib tug thib ob winding nrog ntau lem ntawm hlau yog qhwv ib ncig ntawm ib tug laminated steel core. Qhov kev tsim no minimizes magnetic losses thiab xyuas kom meej tam sim no transformation.
Core:Cov tub ntxhais coj cov hlau nplaum sib nqus los ntawm thawj bar mus rau theem nrab winding, ua rau cov txheej txheem induction.

Installation Advantage:Ib qho txiaj ntsig loj ntawm qhov bar-hom Tsawg Voltage Tam sim no Transformer yog nws qhov kev teeb tsa ncaj qha. Nws yog tsim los rau kev txuas ncaj qha mus rau busbars, uas yooj yim rau kev teeb tsa thiab txo cov kev xaim hluav taws xob. Qee cov qauv txawm tias muaj asplit-core lossis clamp-on configuration. Qhov no tso cai rau cov kws tshaj lij txhim kho CT nyob ib puag ncig lub tsheb npav uas twb muaj lawm yam tsis muaj kev cuam tshuam lub zog, ua rau nws zoo tagnrho rau cov haujlwm rov qab.

Lawv cov qauv tsim compact thiab ruaj khov ua rau lawv zoo meej haum rau qhov chaw kaw thiab xav tau ib puag ncig pom hauv switchgear thiab fais fab faib vaj huam sib luag.

Ceeb toom kev nyab xeeb tseem ceeb: Tsis txhob qhib-Circuit thib ob

Txoj cai hauv paus tswj hwm kev nyab xeeb ntawm txhua qhov tam sim no transformer. Technicians thiab engineers yuav tsum tsis txhob cia lub thib ob winding yuav qhib-circuited thaum tam sim no ntws los ntawm thawj tus neeg xyuas pib. Cov terminals thib ob yuav tsum tau txuas nrog lub nra (nws lub nra) lossis luv luv. Kev tsis saib xyuas txoj cai no ua rau muaj kev phom sij heev.

Txoj Cai Golden ntawm CTs:Nco ntsoov xyuas kom lub voj voog thib ob raug kaw ua ntej energizing thawj. Yog hais tias koj yuav tsum tshem tawm ib lub 'meter' los yog relay los ntawm ib tug active circuits, luv luv-circuit CT lub thib ob terminals ua ntej.

Kev nkag siab txog lub cev tom qab qhov kev ceeb toom no qhia txog qhov xwm txheej hnyav. Hauv kev ua haujlwm ib txwm muaj, qhov thib ob tam sim no tsim qhov chaw sib nqus sib nqus uas tawm tsam thawj qhov chaw sib nqus. Qhov kev tawm tsam no ua rau cov hlau nplaum sib nqus hauv lub hauv paus ntawm qhov qis, muaj kev nyab xeeb.

Thaum tus neeg teb xov tooj disconnect tus thib ob los ntawm nws lub nra, lub Circuit Court qhib. Qhov thib ob winding tam sim no sim tsav nws tam sim no mus rau qhov zoo li castsis kawg impedance, los yog tsis kam. Qhov kev txiav txim no ua rau qhov tsis sib haum magnetic teb tawg. Thawj qhov tam sim no cov hlau nplaum sib nqus tsis raug tso tseg lawm, thiab nws sai sai tsim nyob rau hauv cov tub ntxhais, tsav cov tub ntxhais mus rau hauv loj saturation.

Cov txheej txheem no induces ib tug txaus ntshai heev voltage nyob rau hauv lub thib ob winding. Qhov tshwm sim nthuav tawm hauv cov kauj ruam sib txawv thaum lub sij hawm txhua lub voj voog AC:

Cov thawj tam sim no tsis pom zoo ua rau muaj qhov sib nqus loj heev hauv cov tub ntxhais, ua rau nws saturate.
Raws li AC thawj tam sim no dhau los ntawm xoom ob zaug hauv ib lub voj voog, cov hlau nplaum sib nqus yuav tsum tau hloov pauv sai sai ntawm saturation nyob rau hauv ib qho kev coj mus rau saturation nyob rau hauv qhov opposite direction.
Qhov kev hloov pauv sai heev hauv cov hlau nplaum sib nqus no ua rau muaj qhov hluav taws xob tsis tshua muaj hluav taws xob nyob rau hauv qhov thib ob winding.

Qhov no induced voltage tsis yog ib tug ruaj khov high voltage; nws yog ib tug series ntawm ntse ncov los yog crests. Cov hluav taws xob hluav taws xob no tuaj yeem ncav cuag tau yooj yimntau txhiab volts. Xws li qhov muaj peev xwm ua rau muaj ntau yam txaus ntshai.

Kev poob siab txaus ntshai:Kev sib cuag ncaj qha nrog cov terminals thib ob tuaj yeem ua rau tuag taus hluav taws xob.
Rwb thaiv tsev tawg:Qhov hluav taws xob siab tuaj yeem rhuav tshem cov rwb thaiv tsev nyob rau hauv lub tam sim no transformer, ua rau mus tas li tsis ua hauj lwm.
Instrument Damage:Ib qho kev sib txuas xyuas cov cuab yeej tsis tsim los rau cov hluav taws xob siab no yuav raug puas tsuaj tam sim ntawd.
Arcing thiab hluav taws:Qhov hluav taws xob tuaj yeem ua rau ib qho arc tsim ntawm cov terminals thib ob, ua rau muaj hluav taws kub thiab tawg.

Txhawm rau tiv thaiv cov kev phom sij no, cov neeg ua haujlwm yuav tsum ua raws li cov txheej txheem kev nyab xeeb nruj thaum ua haujlwm nrog Low Voltage Current Transformer.

Cov txheej txheem tswj kev nyab xeeb:

Paub meej tias Circuit Court kaw:Ua ntej energizing lub hauv paus Circuit Court, nco ntsoov xyuas tias CT's thib ob winding txuas nrog nws lub nra (meters, relays) los yog ruaj ntseg luv luv.

Siv Shorting Blocks:Ntau qhov kev teeb tsa suav nrog cov davhlau ya nyob twg thaiv nrog cov keyboards luv luv. Cov cuab yeej no muab txoj hauv kev nyab xeeb thiab txhim khu kev qha kom luv luv rau theem nrab ua ntej kev pabcuam cov cuab yeej txuas nrog.

Luv luv Ua ntej Disconnecting:Yog tias koj yuav tsum tshem tawm cov cuab yeej los ntawm lub zog hluav taws xob, siv lub jumper xaim kom luv CT's thib ob terminalsua ntejdisconnecting qhov ntsuas.

Tshem tawm qhov luv tom qab Reconnecting:Tsuas yog tshem tawm qhov luv jumpertom qablub ntsuas yog tag nrho reconnected rau lub thib ob Circuit Court.

Kev ua raws li cov txheej txheem no tsis yog xaiv tau. Nws yog qhov tseem ceeb rau kev tiv thaiv cov neeg ua haujlwm, tiv thaiv cov khoom siv puas tsuaj, thiab ua kom muaj kev nyab xeeb tag nrho ntawm cov khoom siv hluav taws xob.

Daim Ntawv Thov thiab Cov Txheej Txheem Xaiv

Tsawg voltage tam sim no transformers yog cov khoom tseem ceeb hauv cov tshuab hluav taws xob niaj hnub no. Lawv daim ntawv thov muaj xws li los ntawm kev saib xyuas yooj yim mus rau kev tiv thaiv tseem ceeb. Kev xaiv CT kom raug rau ib txoj haujlwm tshwj xeeb yog qhov tseem ceeb rau kev ua kom raug, kev nyab xeeb, thiab kev ntseeg tau.

Cov Ntawv Thov Kev Pabcuam hauv Kev Lag Luam thiab Kev Lag Luam

Cov kws tsim khoom siv CTs feem ntau hauv kev lag luam thiab kev lag luam ib puag ncig rau kev saib xyuas thiab kev tswj xyuas hluav taws xob. Hauv cov tsev lag luam, lub zog saib xyuas lub zog cia siab rau CTs los ntsuas cov kev hloov pauv siab kom nyab xeeb. Lub siab tam sim no ntws los ntawm thawj tus neeg xyuas pib, tsim ib qho chaw sib nqus. Daim teb no induces ib tug ntau me me, proportional tam sim no nyob rau hauv lub thib ob winding, uas ib 'meter' tau yooj yim nyeem. Cov txheej txheem no tso cai rau cov thawj tswj hwm qhov chaw taug qab kev siv hluav taws xob kom raug rau cov ntawv thov xws licoj mus muag kWh net metering ntawm 120V lossis 240V.

Vim Li Cas Xaiv Txoj Cai CT Matters

Kev xaiv CT ncaj qha cuam tshuam rau qhov raug nyiaj txiag thiab kev nyab xeeb ntawm kev ua haujlwm. Qhov loj me lossis ntsuas CT tsis raug qhia txog teeb meem loj.

⚠️ ibQhov tseeb cuam tshuam txog kev them nqi:CT muaj qhov ua haujlwm zoo tshaj plaws. Siv nws ntawmtsawg heev los yog siab loads nce kev ntsuas yuam kev. Ibqhov tseeb yuam kev tsuas yog 0.5%yuav ua rau cov nqi them nqi yuav raug rho tawm los ntawm tib tus nqi. Tsis tas li ntawd, lub kaum sab xis hloov pauv tau qhia los ntawm CT tuaj yeem cuam tshuam kev nyeem ntawv lub zog, tshwj xeeb tshaj yog nyob rau lub zog qis, ua rau muaj qhov tsis raug them nqi ntxiv.

Kev xaiv tsis raug kuj cuam tshuam txog kev nyab xeeb. Thaum ua txhaum, aCT tuaj yeem nkag mus saturation, distorting nws cov teeb liab tso zis. Qhov no tuaj yeem ua rau kev tiv thaiv relays ua haujlwm tsis zoo hauv ob txoj hauv kev txaus ntshai:

Ua tsis tiav:Lub relay yuav tsis paub txog qhov ua txhaum tiag tiag, cia qhov teeb meem nce ntxiv thiab cov khoom puas.
False Tripping:Lub relay tuaj yeem txhais cov teeb liab yuam kev thiab ua rau lub zog tsis tsim nyog.

Hom Kev Ntsuas thiab Cov Qauv

Txhua Low Voltage Current Transformer muaj cov kev ntsuas tshwj xeeb uas txhais tau tias nws qhov kev ua tau zoo. Cov kev ntsuas tseem ceeb suav nrog qhov sib piv, qhov tseeb ntawm chav kawm, thiab lub nra. Lub nra hnyav yog tag nrho cov load (impedance) txuas nrog rau theem nrab, suav nrog meters, relays, thiab xaim nws tus kheej. CT yuav tsum muaj peev xwm ua kom lub nra no tsis muaj qhov tseeb.

Kev ntsuas tus qauv sib txawv rau kev ntsuas thiab kev tiv thaiv (relaying) daim ntawv thov, raws li qhia hauv qab no.

CT Hom	Hom Specification	Burden Unit	Kev suav ntawm Burden hauv Ohms (5A Secondary)
Kev ntsuas CT	0.2B 0.5	Ohms	0,5 hmo
Relaying CT	10 C400	Volts	4.0 hmo

Lub metering CT lub nra yog nyob rau hauv ohms, thaum lub relaying CT lub nra yog txhais los ntawm qhov voltage nws tuaj yeem xa tau ntawm 20 npaug ntawm nws qhov ntsuas tam sim no. Qhov no ua kom lub relaying CT tuaj yeem ua tau raws li qhov tsis raug.

Lub tshuab hluav taws xob tsis tshua muaj hluav taws xob tam sim no yog qhov cuab yeej tseem ceeb rau kev tswj hwm lub zog. Nws muaj kev nyab xeeb ntsuas siab alternating tam sim no los ntawm kev nce lawv mus rau ib qho proportional, qis tus nqi. Cov cuab yeej ua haujlwm yog nyob ntawm cov qauv ntawm electromagnetic induction thiab winding lem ratio.

Cov ntsiab lus tseem ceeb:

Txoj cai tseem ceeb tshaj plaws ntawm kev nyab xeeb yog tsis txhob qhib lub voj voog thib ob thaum lub hauv paus tseem muaj zog, vim qhov no ua rau muaj kev phom sij siab.

Kev xaiv kom raug raws li daim ntawv thov, qhov tseeb, thiab kev ntsuam xyuas yog qhov tseem ceeb rau kev nyab xeeb thiab kev ua haujlwm tag nrho.

FAQ

CT puas tuaj yeem siv rau ntawm DC Circuit Court?

Tsis yog, atam sim no transformertsis tuaj yeem ua haujlwm ntawm qhov hluav taws xob ncaj qha (DC) Circuit Court. CT xav kom hloov pauv magnetic teb uas tsim los ntawm alternating tam sim no (AC) induce ib tug tam sim no nyob rau hauv nws thib ob winding. Lub DC Circuit Court tsim ib qho chaw sib nqus tas li, uas tiv thaiv induction.

Yuav ua li cas yog tias siv CT piv txwv tsis raug?

Kev siv qhov tsis raug CT piv ua rau kev ntsuas qhov tsis raug thiab muaj peev xwm muaj teeb meem kev nyab xeeb.

Kev xa nyiaj tsis raug:Kev nyeem ntawv siv hluav taws xob yuav tsis raug.
Kev tiv thaiv tsis ua haujlwm:Kev tiv thaiv relays yuav tsis ua haujlwm kom raug thaum muaj kev ua txhaum, uas yuav ua rau cov khoom puas tsuaj.

Dab tsi yog qhov sib txawv ntawm kev ntsuas ntsuas thiab relaying CT?

Ib qho metering CT muab qhov tseeb siab nyob rau hauv ib txwm tam sim no loads rau kev them nqi. Lub relaying CT yog tsim los ua kom muaj tseeb thaum lub sij hawm muaj teeb meem tam sim no. Qhov no ua kom cov cuab yeej tiv thaiv tau txais cov teeb liab txhim khu kev qha los mus rau hauv Circuit Court thiab tiv thaiv kev puas tsuaj loj.

Yog vim li cas qhov thib ob Circuit Court luv luv rau kev nyab xeeb?

Shorting qhov thib ob muab txoj hauv kev nyab xeeb, ua tiav rau qhov cuam tshuam tam sim no. Ib qho qhib hluav taws xob thib ob tsis muaj qhov twg rau qhov tam sim no mus. Qhov mob no ua rau CT ua kom muaj zog heev, muaj kev phom sij uas tuaj yeem ua rau tuag taus thiabrhuav tshem lub transformer.

Post lub sij hawm: Nov-05-2025