Xaiv qhov raug Split Core Tam sim no Transformer yog qhov tseem ceeb rau kev ua tiav cov haujlwm ua tiav. Txhim kho qhov tseem ceeb ntawm kev siv hluav taws xob ua kom muaj kev xav tau rau kev saib xyuas kev daws teeb meem. Tus kws tshaj lij ua ntej ntsuas tus neeg xyuas pib lub taub sab nraud. Lawv kuj txiav txim siab qhov siab tshaj plaws amperage tus neeg xyuas pib yuav nqa. Tom ntej no, cov kev xav tau ntawm lub cev thiab hluav taws xob tau sib phim rau aSplit Core tam sim no Sensornrog cov specifications tsim nyog. Qhov no suav nrog qhov tseeb qhov loj me, qhov ntsuas tam sim no, chav kawm raug, thiab cov teeb liab tso tawm. Cov xaivSplit Core Current Transduceryuav tsum tau sib haum nrog lub hwj chim meter uas twb muaj lawm.
Qhov sib cais-core tsim tso cai rau yooj yim installation nyob ib ncig ntawm uas twb muaj lawm conductors. Qhov no ua rau nwszoo tagnrho rau retrofitting tshuab tsis cuam tshuam tam sim no ntws.
Ntsiab Cai
- Ntsuas tus neeg xyuas pib qhov loj thiab qhov siab tshaj plaws tam sim no. Qhov no ua kom lub CT haum thiab tuav cov khoom hluav taws xob kom zoo.
- Sib piv CT lub teeb liab tso zis rau koj lub ntsuas hluav taws xob. Qhov no tiv thaiv cov ntaub ntawv tsis raug lossis kev puas tsuaj rau koj cov khoom siv.
- Xaiv cov chav kawm raug raug rau koj cov kev xav tau. Kev them nqi yuav tsum muaj qhov tseeb siab, thaum kev soj ntsuam tuaj yeem siv qhov raug qis dua.
- Tshawb xyuas cov ntawv pov thawj kev nyab xeeb xws li UL lossis CE cov cim. Qhov no lees paub tias CT ua tau raws li cov qauv kev nyab xeeb.
- Xav txog lub installation ib puag ncig. Qhov no suav nrog qhov kub thiab txias, noo noo, thiab corrosive ntsiab rau kev siv ntev.
Sizing lub CT: Conductor Diameter thiab Amperage Rating
Qhov loj me me atam sim no transformer(CT) suav nrog ob kauj ruam tseem ceeb. Ua ntej, tus kws kho mob yuav tsum paub meej tias lub cev qhov ntev. Qhov thib ob, lawv yuav tsum txheeb xyuas qhov ntsuas hluav taws xob. Cov kev ntsuas thawj zaug no ua kom cov cuab yeej xaiv tau haum thiab ua tau zoo.
Kev ntsuas tus neeg xyuas pib txoj kab uas hla rau qhov rai qhov loj
Thawj kauj ruam hauv kev xaiv aSplit Core tam sim no Transformeryog kev ntsuas lub cev. Tus kws kho mob yuav tsum xyuas kom meej tias lub cuab yeej qhib, lossis "qhov rais," loj txaus los kaw ib ncig ntawm tus neeg xyuas pib. Kev ntsuas qhov tseeb ntawm tus neeg xyuas pib txoj kab uas hla, nrog rau nws cov rwb thaiv tsev, yog qhov tseem ceeb.
Cov kws kho mob siv ntau yam cuab yeej rau txoj haujlwm no. Kev xaiv cov cuab yeej feem ntau yog nyob ntawm pob nyiaj siv thiab qhov xav tau kev nyab xeeb uas tsis yog kev coj ua.
- Yas calipersmuab tus nqi tsim nyog thiab muaj kev nyab xeeb, tsis muaj kev xaiv rau qhov chaw nyob.
- Digital micrometersmuab cov kev ntsuas siab.
- Cov cuab yeej tshwj xeeb zoo li covBurndy Hlau Miketau tsim tshwj xeeb rau daim ntawv thov no.
- Go/no-go gaugestuaj yeem tshawb xyuas sai sai yog tias tus neeg xyuas pib haum rau qhov loj me me.
Tus neeg xyuas pib qhov ntau thiab tsawg hauv North America feem ntau ua raws liAmerican Wire Gauge (AWG) system. Cov qauv no, tau teev tseg hauv ASTM B 258, txhais cov kab hluav taws xob ntawm cov xaim hluav taws xob. Ib tug me me AWG tooj qhia tau hais tias ib tug loj txoj kab uas hla. Daim ntawv qhia thiab cov lus hauv qab no qhia txog kev sib raug zoo ntawm AWG qhov loj thiab txoj kab uas hla.
| AWG | Txoj kab uas hla (hauv) | Txoj kab uas hla (mm) |
|---|---|---|
| 4/0 | 0.4600 Nws | 11.684 Nws |
| 2/0 | 0.3648 ib | 9.266 ib |
| 1/0 | 0.3249 ib | 8.252 ib |
| 2 | 0.2576 ib | 6.543 ib |
| 4 | 0.2043 ib | 5.189 ib |
| 6 | 0.1620 Nws | 4.115 ib |
| 8 | 0.1285 ib | 3.264 ib |
| 10 | 0.1019 Nws | 2.588 ib |
| 12 | 0.0808 ib | 2.053 ib |
| 14 | 0.0641 ib | 1.628 ib |
Kev teeb tsa nrog ntau lub conductors bundled ua ke yuav tsum tau saib xyuas tshwj xeeb. Lub qhov rais CT yuav tsum loj txaus los thaiv tag nrho cov pob. Covua ke ib ncig ntawm cov bundled xov hlau dictates qhov tsawg kawg nkaus yuav tsum tau qhov rais loj.
Tswv yim Pro:Lub qhov rais CT yuav tsum haumluxuriously nyob ib ncig ntawm lub cable los yog busbar. Lub snug haum tuaj yeem ua rau kev teeb tsa nyuaj, thaum lub aperture ntau dhau tuaj yeem qhia txog kev ntsuas qhov yuam kev. Lub hom phiaj yog qhov haum haum yam tsis muaj qhov chaw khoob loj.
Kev txiav txim siab qhov siab tshaj plaws tam sim no
Tom qab paub meej tias lub cev haum, cov kauj ruam tom ntej yog xaiv qhov tseeb amperage ntsuas. CT qhov kev ntsuam xyuas tseem ceeb tam sim no yuav tsum siab dua qhov siab tshaj qhov xav tau tam sim no ntawm cov ntsuas hluav taws xob. Qhov kev ntsuam xyuas no tsis yog qhov ntsuas hluav taws xob ntawm qhov kev mus ncig tab sis qhov siab tshaj plaws kev txhawb nqa amperage lub load yuav kos.
Tus kws tshaj lij yuav tsum suav txog qhov muaj peev xwm nce ntxiv hauv cov khoom hluav taws xob yav tom ntej. Qhov kev coj ua no tiv thaiv qhov kev xav tau ntawm kev hloov pauv nyiaj tom qab.
Ib qho kev coj ua zoo tshaj plaws hauv kev lag luam yog xaiv CT nrog qhov kev ntsuas thawj zaug uas yog125%ntawm qhov siab tshaj plaws nruam load. Qhov no 25% tsis pub muaj kev nyab xeeb rau yav tom ntej nthuav dav thiab tiv thaiv CT los ntawm saturating.
Piv txwv li, yog tias lub voj voog qhov siab tshaj plaws txuas ntxiv yog 80A, tus kws tshaj lij yuav suav qhov tsawg kawg nkaus CT ntsuas raws li80A * 1.25 = 100A. Hauv qhov no, 100A Split Core Current Transformer yuav yog qhov kev xaiv tsim nyog. Kev ua kom tsis zoo ntawm CT tuaj yeem ua rau cov ntsiab lus tsis txaus, ua rau kev nyeem ntawv tsis raug thiab muaj peev xwm puas tsuaj. Conversely, qhov tseem ceeb oversizing tuaj yeem txo qhov raug ntawm qis dua tam sim no, yog li nrhiav qhov sib npaug yog qhov tseem ceeb.
Sib piv cov zis tso zis rau koj lub 'meter'
Thaum tus kws tshaj lij paub meej txog qhov loj ntawm lub cev, txoj haujlwm tseem ceeb tom ntej yog los xyuas kom muaj hluav taws xob sib raug zoo. Ib tug Split Core Current Transformer ua raws li ib tug sensor, converting siab thawj tam sim no mus rau ib tug tsawg-theem teeb liab. Cov teeb liab tso zis no yuav tsum ua kom haum raws li lub ntsuas hluav taws xob lossis cov cuab yeej saib xyuas tau tsim los txais. Kev sib tw tsis raug yuav ua rau cov ntaub ntawv tsis raug lossis, qee zaum, kev puas tsuaj rau cov khoom siv.
To taub CT Outputs (5A, 1A, 333mV)
Tam sim no transformers muaj nyob nrog ntau cov qauv tso zis teeb liab. Peb hom feem ntau pom nyob rau hauv daim ntawv thov retrofit yog 5 Amp (5A), 1 Amp (1A), thiab 333 millivolt (333mV). Txhua tus muaj cov yam ntxwv sib txawv thiab haum rau cov xwm txheej sib txawv.
5A thiab 1A Outputs:Cov no yog cov khoom siv niaj hnub no. Lub CT tsim ib tug thib ob tam sim no uas ncaj qha proportional rau thawj tam sim no. Piv txwv li, 100: 5A CT yuav tsim 5A ntawm nws theem nrab thaum 100A ntws los ntawm thawj tus neeg xyuas pib. Thaum 5A tau ua tus qauv keeb kwm, 1A cov txiaj ntsig tau txais txiaj ntsig rau kev teeb tsa tshiab.
⚠️ Kev Ceeb Toom Txog Kev Nyab Xeeb Tseem Ceeb:CT nrog 5A lossis 1A tso zis yog qhov tam sim no. Nws theem nrab Circuit Court yuav tsumyeej tsisqhib sab laug thaum tus thawj neeg xyuas pib muaj zog. Ib qho qhib theem nrab tuaj yeem tsim tausiab heev, txaus ntshai voltages(feem ntautxhiab volts), ua rau muaj kev phom sij loj heev. Cov xwm txheej no tseem tuaj yeem ua rau CT lub hauv paus ua rau kub dhau thiab ua tsis tiav, uas tuaj yeem ua rau CT puas thiab ua rau cov khoom siv txuas nrog puas tsuaj. Nco ntsoov xyuas kom cov terminals thib ob yog luv los yog txuas nrog ib lub 'meter' ua ntej energizing thawj Circuit Court.
Covxaiv ntawm 1A thiab 5A tso zisfeem ntau nyob ntawm qhov deb ntawm qhov ntsuas thiab qhov project specifications.
| Feature | 1A Secondary CT | 5A Secondary CT |
|---|---|---|
| Lub zog poob | Tsawg zog poob (I²R) hauv cov hlau lead. | Siab zog poob hauv cov hlau lead. |
| Lead Ntev | Zoo dua rau kev ncua ntev vim qhov qis qis qis thiab lub nra hnyav. | Txwv kom luv luv kom tswj tau qhov tseeb. |
| Hlau Loj | Tso cai rau me me, tsis tshua muaj nqi hlau lead. | Yuav tsum muaj cov hlau lead ntau dua thiab kim dua rau kev ua haujlwm ntev. |
| Kev nyab xeeb | Tsawg induced voltage yog hais tias qhov thib ob yog yuam kev qhib. | Ntau dua induced voltage thiab muaj kev pheej hmoo ntau dua yog tias qhib. |
| Nqi | Feem ntau kim dua vim muaj kev sib tw thib ob. | Feem ntau pheej yig dua. |
| Kev sib haum xeeb | Loj hlob tus qauv, tab sis tej zaum yuav xav tau cov meters tshiab. | Ib txwm qauv nrog dav compatibility. |
333mV tso zis:Hom CT no ua rau cov teeb liab qis qis. Cov CTs no muaj kev nyab xeeb dua vim tias lawv muaj lub nra hnyav uas hloov cov tam sim no thib ob mus rau qhov hluav taws xob. Qhov kev tsim no tiv thaiv qhov teeb meem siab-voltage cuam tshuam nrog qhib-circuiting 1A lossis 5A CT. 333mV teeb liab yog ib qho qauv rau niaj hnub digital fais fab ntsuas.
Lwm hom sensor, lubRogowski Coil, kuj tsim ib millivolt-theem tso zis. Txawm li cas los xij, nws yuav tsum muaj kev sib koom ua ke sib cais kom ua haujlwm kom raug. Rogowski coils yog hloov tau thiab zoo tagnrho rau kev ntsuas qhov siab tam sim no lossis hauv cov ntawv thov nrog ntau qhov sib txawv, tab sis lawv feem ntau tsis haum rau kev thauj khoom.qis dua 20A.
Txheeb xyuas koj qhov ntsuas ntsuas qhov xav tau
Txoj cai tseem ceeb tshaj plaws ntawm kev xaiv CT yog tias CT cov zis yuav tsum sib phim lub ntsuas ntsuas. Ib lub 'meter' tsim rau 333mV input tsis tuaj yeem nyeem 5A teeb liab, thiab rov ua dua. Cov txheej txheem pov thawj no suav nrog kev txheeb xyuas cov ntaub ntawv thiab nkag siab lub ntsiab lus ntawm lub nra.
Ua ntej, tus kws tshaj lij yuav tsum txheeb xyuas cov tswv yim uas tau teev tseg los ntawm cov chaw tsim khoom 'meter'. Cov ntaub ntawv no feem ntau yog luam tawm ntawm lub tshuab ntaus ntawv lossis cov ncauj lus kom ntxaws hauv nws phau ntawv qhia kev teeb tsa. Cov tswv yim yuav qhia meej tias yog 5A, 1A, 333mV, lossis lwm tus nqi tshwj xeeb.
Qhov thib ob, tus kws tshaj lij yuav tsum xav txog tag nrholub nrantawm CT. Burden yog tag nrho cov load txuas nrog CT qhov thib ob, ntsuas hauv Volt-Amps (VA) lossis Ohms (Ω). Qhov no load muaj xws li:
- Internal impedance ntawm lub 'meter' nws tus kheej.
- Kev tiv thaiv ntawm cov hlau lead hlau khiav ntawm CT mus rau lub 'meter'.
- Lub impedance ntawm lwm yam khoom siv txuas nrog.
Txhua CT muaj ib tuglub nra hnyav tshaj plaws(piv txwv li, 1VA, 2.5VA, 5VA). Tshaj qhov ntsuas no yuav ua rau CT poob qhov tseeb. Raws li cov lus hauv qab no qhia, lubinput impedance ntawm ib 'meter' txawvdrastic los ntawm hom, uas yog ib feem tseem ceeb ntawm covtag nrho lub nra.
| Meter Input Hom | Hom Input Impedance |
|---|---|
| 5A Input | <0.1 Ω |
| 333mV tso zis | > 800 kΩ |
| Rogowski Coil Input | > 600 kΩ |
Qhov qis impedance ntawm 5A meter yog tsim los ua ib qho ze-luv Circuit Court, thaum lub siab impedance ntawm 333mV meter yog tsim los ntsuas qhov hluav taws xob tsis muaj qhov tseem ceeb tam sim no.
Tswv yim Pro:Nco ntsoov sab laj cov chaw tsim khoom cov ntaub ntawv rau ob qho tib si CT thiab lub ntsuas. Muaj ntau manufacturers muabcov rooj sib thamuas qhia meej txog cov qauv CT uas tau pom zoo siv nrog cov ntsuas tshwj xeeb lossis inverters. Hla-referencing cov ntaub ntawv no yog txoj hauv kev zoo tshaj plaws los lav qhov kev txhim kho tiav.
Piv txwv li, cov chaw tsim tshuaj paus inverter yuav muab ib daim ntawv qhia tias nws "Model X" hybrid inverter tsuas yog sib xws nrog "Eastron SDM120CTM" meter thiab nws cov CT cuam tshuam. Kev sim siv CT sib txawv, txawm tias muaj cov teeb liab tso tawm kom raug, tuaj yeem ua rau tsis muaj kev lees paub lossis ua rau lub cev ua haujlwm tsis zoo.
Xaiv Chav Kawm Qhov Tseeb Zoo rau Koj Daim Ntawv Thov
Tom qab sizing lub CT thiab txuam nws cov zis, tus kws kho mob yuav tsum xaiv cov chav kawm raug tsim nyog. Qhov kev ntsuam xyuas no txhais tau tias ze ze npaum li cas CT cov zis theem nrab sawv cev rau qhov tseem ceeb tam sim no. Kev xaiv cov chav kawm kom raug ua kom cov ntaub ntawv khaws tseg tau txhim khu kev qha txaus rau nws lub hom phiaj, txawm tias yog rau kev sau nqi tseem ceeb lossis kev saib xyuas dav dav. Kev xaiv tsis raug tuaj yeem ua rau muaj kev tsis sib xws ntawm nyiaj txiag lossis kev txiav txim siab ua haujlwm tsis raug.
Defining CT Accuracy Classes
Cov txheej txheem thoob ntiaj teb, xws liIEC 61869-2: Cov, txhais cov chav kawm CT qhov tseeb. Tus qauv no qhia txog qhov ua yuam kev ntawm qhov feem pua ntawm CT qhov ntsuas tam sim no. Ib qho kev sib txawv tseem ceeb muaj nyob nruab nrab ntawm cov chav kawm thiab cov chav kawm tshwj xeeb, nruj dua.
- IEC 61869-2 tus qauv qhia txog kev ua tau zoo rau ob qho kev ua yuam kev tam sim no thiab theem kev hloov pauv.
- Cov chav kawm tshwj xeeb 'S' CTs (piv txwv li, Chav Kawm 0.5S) muaj kev txwv nruj dua ntawm cov qib tam sim no qis dua piv rau lawv cov qauv sib piv (piv txwv li, Chav Kawm 0.5).
- Piv txwv li, ntawm 5% ntawm qhov ntsuas tam sim no, Chav Kawm 0.5 CT tuaj yeem muaj a1.5% yuam kev, thaum chav kawm 0.5S CT yuav tsum tsis pub dhau 0.75%.
Qhov tseeb muaj ntau tshaj li qhov loj tam sim no. Nws kuj suav nrogtheem hloov chaw, los yog theem yuam kev. Qhov no yog lub sij hawm ncua ntawm thawj waveform tam sim no thiab lub thib ob cov zis waveform. Txawm tias me me yuam kev tuaj yeem cuam tshuam rau kev suav fais fab.
Thaum twg los xaiv tus nqi-qib vs. Kev soj ntsuam-qib qhov tseeb
Daim ntawv thov dictates qhov yuav tsum tau raug. CTs feem ntau poob rau hauv ob pawg: nqi-qib thiab saib xyuas-qib.
Nqi-qibCTs (piv txwv li, Chav Kawm 0.5, 0.5S, 0.2) yog qhov tseem ceeb rau kev siv nyiaj tau los. Thaum lub tuam txhab hluav taws xob lossis tus tswv tsev them nqi rau tus neeg xauj tsev rau kev siv hluav taws xob, qhov ntsuas yuav tsum yog qhov tseeb. Aqhov yuam kev me me tuaj yeem ua rau qhov tsis raug tseem ceeb hauv kev ntsuas lub zog, tshwj xeeb tshaj yog nyob rau hauv cov tshuab uas muaj lub zog tsawg. Qhov no txhais ncaj qha rau cov nqi nyiaj txiag tsis raug.
Kev ntsuas hluav taws xob tsis raug los ntawm theem yuam kev kuj tuaj yeem ua rau muaj teeb meem tshaj li kev them nqi. Hauv peb-theem systems, nws tuaj yeem ua rauunbalanced loads thiab cov khoom siv zog. Nws kuj tseem tuaj yeem ua rau kev tiv thaiv relays ua haujlwm tsis zoo, tsim kom muaj kev nyab xeeb.
Saib xyuas-qibCTs (piv txwv li, Chav Kawm 1.0 thiab siab dua) yog qhov tsim nyog rau kev tswj hwm lub zog. Cov kws kho mob siv lawv rau kev taug qab cov cuab yeej ua haujlwm, txheeb xyuas cov qauv thauj khoom, lossis faib cov nqi sab hauv. Rau cov haujlwm no, qhov qis dua me ntsis ntawm qhov tseeb tau txais. Xaiv txoj cai Split CoreTam sim no Transformerua kom cov ntaub ntawv muaj kev ncaj ncees sib npaug ntawm qhov project nyiaj txiag thiab kev ua haujlwm.
Txheeb xyuas koj qhov Split Core tam sim no Transformer rau kev nyab xeeb thiab ib puag ncig
Tus kws tshaj lij qhov kev kuaj xyuas zaum kawg suav nrog kev lees paub kev nyab xeeb cov ntawv pov thawj thiab ntsuas qhov chaw teeb tsa. Cov kauj ruam no xyuas kom cov xaivSplit Core tam sim no Transformerua haujlwm ntseeg siab thiab nyab xeeb rau nws lub neej kev pabcuam tag nrho. Kev tsis saib xyuas cov ntawv pov thawj no tuaj yeem ua rau ua tsis tiav ntxov, muaj kev nyab xeeb, thiab tsis ua raws li cov cai hauv cheeb tsam.
Tshawb xyuas UL, CE, thiab Lwm Cov Ntawv Pov Thawj
Cov ntawv pov thawj kev nyab xeeb yog tsis sib tham. Lawv lees paub tias cov khoom lag luam tau raug sim los ntawm lub cev ywj pheej kom ua tau raws li cov qauv kev nyab xeeb thiab kev ua tau zoo. Hauv North America, tus kws tshaj lij yuav tsum nrhiav UL lossis ETL cim. Hauv Tebchaws Europe, CE cim yog qhov yuav tsum tau ua.
Lub cim CE qhia tias ua raws li European Union cov lus qhia, xws liCov Lus Qhia Tsawg Voltage. Txhawm rau siv cov cim no, tus neeg tsim khoom yuav tsum:
- Ua ib qho kev ntsuam xyuas txaus ntshai los txheeb xyuas thiab txo cov kev phom sij uas muaj peev xwm.
- Ua cov kev ntsuam xyuas ua raws li cov qauv kev sib haum xeeb.
- Tshaj tawm txoj caiTshaj Tawm Txog Kev Ua Raws Cai, ib daim ntawv pov thawj raws li kev lav phib xaub rau kev ua raws li cov khoom.
- Khaws cov ntaub ntawv thev naus laus zis, suav nrog kev soj ntsuam kev pheej hmoo thiab cov lus qhia ua haujlwm.
Nco ntsoov xyuas tias cov ntawv pov thawj yog qhov tseeb thiab siv rau cov qauv tshwj xeeb uas tau yuav. Qhov kev mob siab rau no tiv thaiv ob qho tib si cov khoom siv thiab cov neeg ua haujlwm.
Kev ntsuas qhov nruab nrab ib puag ncig
Lub cev ib puag ncig cuam tshuam rau CT lub neej ntev thiab raug. Tus kws tshaj lij yuav tsum ntsuas peb yam tseem ceeb: qhov kub thiab txias, noo noo, thiab cov kab mob.
Ua haujlwm kub:Txhua CT muaj qhov ntsuas kub ua haujlwm. Qee cov qauv ua haujlwm los ntawm-30 ° C txog 55 ° C, thaum lwm tus, zoo li qee qhov Hall Effect sensors, tuaj yeem ua haujlwm-40 ° C rau + 85 ° C. Tus kws tshaj lij yuav tsum xaiv cov cuab yeej ntsuas rau qhov ntsuas kub ntawm qhov chaw nruab, txij li lub caij ntuj no txias tshaj plaws mus rau hnub kub tshaj plaws.
Moisture thiab Ingress Protection (IP): High humidity thiab ncaj qha dej raugyog kev hem thawj loj.Cov dej noo tuaj yeem degrade rwb thaiv tsev, corrode hlau Cheebtsam, thiab ua rau hluav taws xob faults. CovIngress Protection (IP) qhov ntsuasqhia tau hais tias lub cuab yeej tiv thaiv plua plav thiab dej.
| Kev ntsuas IP | Kev tiv thaiv plua plav | Kev tiv thaiv dej |
|---|---|---|
| IP65 | Plua plav nruj | Tiv thaiv los ntawm cov dav hlau uas tsis tshua muaj dej |
| IP67 | Plua plav nruj | Tiv thaiv los ntawm immersion mus txog 1m |
| IP69K | Plua plav nruj | Kev tiv thaiv los ntawm chav dav hlau ntxuav |
Kev ntsuam xyuas IP65 feem ntau txaus rau cov khoom siv dav dav. Txawm li cas los xij, kev teeb tsa sab nraum zoov yuav xav tau IP67 rau kev tiv thaiv kev nkag mus. Rau hnyav ntxuav-down ib puag ncig, xws li hauv kev ua zaub mov, ibIP69K-nyobSplit Core Current Transformer yog qhov tseem ceeb.
Corrosive Atmospheres:Cov chaw nyob ze ntawm ntug dej hiav txwv lossis cov chaw tsim khoom lag luam yuav muaj ntsev lossis tshuaj lom neeg hauv huab cua. Cov corrosive cov neeg ua haujlwm no ua kom lub zog ntawm CT lub tsev thiab cov khoom siv sab hauv. Nyob rau hauv ib puag ncig zoo li no, tus kws tshaj lij yuav tsum xaiv CT nrog cov ntaub ntawv muaj zog, corrosion-resistant thiab cov ntaub ntawv kaw.
Tus kws tshaj lij ua kom muaj kev vam meej rov qab los ntawm kev ua raws li daim ntawv teev npe zaum kawg. Qhov no lees paub qhov Split Core Current Transformer ua tau raws li txhua qhov project xav tau.
- Qhov rai Loj:Fits tus neeg xyuas pib txoj kab uas hla.
- Amperage:Tshaj qhov siab tshaj plaws Circuit Court load.
- Output Signal:Raws li lub 'meter' input.
- Qhov tseeb Class:Haum rau daim ntawv thov (them nqi vs.
Tus kws tshaj lij yuav tsum tau txheeb xyuas qhov kev xaiv Split Core Current Transformer yog qhov sib xws nrog cov khoom siv ntsuas ntsuas. Ua ntej ua qauv nrog cov ntawv pov thawj kev nyab xeeb rau thaj tsam tiv thaiv ob tus neeg ua haujlwm thiab cov khoom siv.
FAQ
Yuav ua li cas yog tias tus kws kho mob nruab CT rov qab?
Tus kws tshaj lij txhim kho CT rov qab thim rov qab cov dej ntws tam sim no tus polarity. Qhov no ua rau lub 'meter' qhia tsis zoo lub zog nyeem ntawv. Rau kev ntsuas kom raug, tus xub lossis daim ntawv lo rau ntawm CT vaj tse yuav tsum taw tes rau hauv cov kev taw qhia ntawm cov dej ntws tam sim no, mus rau lub nra.
Tus kws kho mob puas tuaj yeem siv ib qho CT loj rau ntau tus neeg xyuas?
Yog lawm, tus kws tshaj lij tuaj yeem hla ntau tus neeg xyuas pib los ntawm ib qho CT. CT yuav ntsuas qhov net (vector sum) ntawm cov dej ntws. Txoj kev no ua haujlwm rau kev saib xyuas tag nrho lub zog. Nws tsis tsim nyog rau kev ntsuas tus kheej siv hluav taws xob.
Vim li cas kuv 333mV CT nyeem tsis raug?
Kev nyeem tsis raug feem ntau tshwm sim los ntawm qhov tsis sib xws ntawm CT thiab lub ntsuas. Tus kws tshaj lij yuav tsum paub meej tias lub ntsuas ntsuas tau teeb tsa rau 333mV cov tswv yim. Siv 333mV CT nrog ib lub 'meter' xav tau 5A cov tswv yim yuav tsim cov ntaub ntawv tsis raug.
Puas yog tam sim no transformer xav tau nws tus kheej lub zog?
Tsis yog, tus qauv passive CT tsis xav tau lub zog sab nraud. Nws sau lub zog ncaj qha los ntawm qhov chaw sib nqus ntawm tus neeg xyuas pib nws ntsuas. Qhov no yooj yim installation thiab txo cov teeb meem ntawm kev sib txuas. Active sensors, zoo li qee cov cuab yeej Hall Effect, yuav xav tau lub zog pab.
Post lub sij hawm: Nov-11-2025