Yuav ua li cas nyeem thiab nkag siab ib qho hloov pauv tam sim no (CT) npe?
Ib qho hloov pauv tam sim no (CT) kev nce qib siab tam sim no (KA qib) mus rau hauv ib qho me me, ntsuas nqi (1 ib lossis 5 a). Qhov no tso cai kom muaj kev nyab xeeb sib txuas rau meters, rov qab, thiab cov khoom siv tiv thaiv. Cov hloov pauv tam sim no (CTS) yog cov khoom tseem ceeb hauv hluav taws xob rau kev ntsuas thiab saib xyuas cov ntws tam sim no thiab saib xyuas tam sim no. Nkag siab yuav ua li cas nyeem thiab txhais cov ntaub ntawv ntawm CT spotplate yog qhov tseem ceeb rau kev ua kom muaj kev txhim kho kom tsim nyog thiab ua haujlwm ntawm lub cuab yeej. Nyeem CT spotplate kom raug kom ntseeg tau hais meej, kev tiv thaiv tau zoo, thiab kev nyab xeeb ntawm cov khoom siv hluav taws xob.
Raug Ct Cov Ntaub Ntawv piav qhia
CT piv (thawj / theem nrab tam sim no)
Piv txwv li: 1000/5 A
Lub ntsiab lus: Thaum 1000 lub ntws hauv thawj, 5 yuav muaj nyob rau theem ob.
Burden (va)
Piv Txwv: 15 va
Load ct tuaj yeem muab khoom (meters + relay + cable kuj).
Tshaj li no → qhov tseeb poob.
Kev Kawm Ua Haujlwm
0.2 / 0.5 / 1 → Metering CT (qhov tseeb yog qhov tseeb, them nqi, ntsuas).
5P / 10P / PS → Kev Tiv Thaiv CT (ua haujlwm kom raug thaum ua txhaum).
Hauv caug point Voltage (VK) (tiv thaiv CTS nkaus xwb)
Voltage ntawm uas ct saturates. Tseem ceeb rau kev tiv thaiv zoo.
Alf (qhov raug txwv tsis pub tshaj) (tiv thaiv CTS)
Piv txwv: Alf 10 → CT tseem muaj tseeb txog li 10 × RO of tam sim no.
ILF (cov khoom siv tsis pub tshaj) (metering CTS)
Piv txwv li: ILF 5 → Tiv thaiv meters yog tias cov nyiaj tau kub siab tshaj plaws saum toj 5 × PE them nqi.
Rated txuas ntxiv tam sim no (hauv)
CT nqa tau qhov tam sim no tsis tu ncua tsis muaj overheating.
Piv txwv li: 120% ntawm rated tam sim no.
Luv - lub sijhawm thermal tam sim no (ith)
Txhaum withstand tam sim no rau 1s lossis 3s.
Piv txwv li: ith {= 25 ka / 1s.
Dynamic tam sim no (idyn)
Txhua yam withstand thaum lub voj voog luv luv (feem ntau yog 2.5 × ith).
Zaus & Txuj
Piv txwv li: 50 hz, iec 61869 / yog 2705.
Piv txwv Ct npe.
CT Piv: 1000/5 A
Lub nra: 15 va
Cov chav kawm yog: 0.5 (metering), 5p10 (tiv thaiv)
Lub hauv caug point: 100 v
Alf: 10
Ilf: 5
Ith: 25 KA / 1s
IDyn: 62.5 ka
Rated txuas ntxiv tam sim no: 120%
Zaus: 50 Hz
Txheem: IEC 61869
Nkag siab yuav ua li cas nyeem thiab txhais cov CT speplate yog qhov tseem ceeb rau kev xaiv cov qauv ct CT, kom tswj tau qhov kev ntseeg tau ntawm cov hluav taws xob. Los ntawm kev them nyiaj rau cov ntsiab lus tseem ceeb xws li cov kev ntsuas tseem ceeb thiab theem nrab, koj tuaj yeem hais txog kev txiav txim siab thaum xaiv thiab txhim kho CTS hauv koj cov ntawv thov. Yog tias koj muaj lus nug lossis kev txhawj xeeb txog kev nyeem CT linplate, ib txwm sab laj cov chaw tsim khoom lossis tus kws tshaj lij hluav taws xob rau kev taw qhia.