Ib peb {- theem hluav taws xob hluav taws xob yog cov cuab yeej tseem ceeb hauv peb -} phase ac circuits. Nws yog dav siv nyob rau hauv kev lag luam, kev lag luam hauv chaw nyob uas xav tau ntawm cov khoom siv hluav taws xob muaj txiaj ntsig lossis ntsuas hluav taws xob tau hais txog lub sijhawm los laij cov khoom siv tau siv. Kab lus no yuav qhia qhia txog cov cai ua haujlwm yooj yim, thiab kev ua haujlwm ntawm lub cev ntawm peb {}}} theem ntsuas hluav taws xob.
Cov txheej txheem yooj yim ntawm peb -}} THEEM hluav taws xob ntsuas
Cov tub ntxhais muaj nuj nqi ntawm ib tug peb -} theem ntsuas hluav taws xob yog ntsuas hluav taws xob siv hluav taws xob hauv peb}}} parse ac fais fab. Lub ntsiab cai yooj yim yog los xyuas peb - theem voltage thiab cov cim tam sim no, suav lawv cov khoom lag luam instantate, thiab tom qab ntawd, thiab tom qab ntawd, thiab tom qab ntawd, thiab tom qab ntawd, thiab tom qab ntawd, thiab tom qab ntawd, thiab tom qab ntawd, thiab tom qab ntawd, thiab tom qab ntawd, thiab tom qab ntawd, thiab tom qab ntawd, thiab tom qab ntawd, thiab tom qab ntawd, thiab tom qab ntawd, thiab tom qab ntawd mam li muab lawv cov khoom siv tam sim no, thiab tom qab ntawd thiaj muaj lub zog. Peb - paim lub tshuab hluav taws xob feem ntau siv lub hnub qub (Y) lossis lub zog me me) yuav tsum hloov kho cov kev sib txuas sib txawv los xyuas kom meej. Cov mis rau kev xam lub zog hluav taws xob yog:
Electric zog (e) {{= voltage (u) × tam sim no (I) × breat) × sijhawm (t)
Ib peb {-} theem hluav taws xob hluav taws xob ib txhij ntsuas ib theem thiab tam sim no ntawm peb theem, thiab qhov kawg ntawm lub zog ntawm tag nrho cov hluav taws xob hluav taws xob.
Cov Cheebtsam Ntawm Peb -} ase Fais Zog Meter
Ib peb {{-} theem hluav taws xob hluav taws xob cov xov xwm feem ntau muaj cov tseem ceeb hauv qab no:
1.Voltage Scpling Chav
Lub chaw ntsuas hluav taws xob cov chav kawm tau txais peb -} roj hloov hluav taws xob (pts) thiab hloov cov hluav taws xob teeb tsa tias lub ntsuas dej yuav siv tau. Qhov tivthaiv no ua kom muaj tseeb thiab muaj kev nyab xeeb voltage ntsuas.
2.Current samling chav tsev
Cov chav ntsuas cov qauv tam sim no feem ntau siv ib qho hloov pauv tam sim no (CT) lossis mananin shunt los hloov siab tam sim no rau cov paib tam sim no rau kev ua tiav tam sim no. Kev ntsuas tam sim no yuav tsum muaj tseeb heev los txo qhov ntsuas ntsuas me me.
3.Metering nti (lossis tshuab txee)
Niaj hnub peb {{-} theem hluav taws xob metres feem ntau siv cov khoom siv ntsuas ntsuas hluav taws xob (ATTALTION SERTINGS los txiav txim siab sai {lub sij hawm fais fab thiab sau lub zog. Tsoos kho mob kho txhua yam {-}}}}}}}}}}}}}}}}} perver siv rau cov tshuab sib dhos los ntawm kev hloov kho lub tshuab ntawm lub tshuab iav.
4.Movroprocessor (MCU)
Hauv cov metres metres, lub microprocessor yog lub luag haujlwm rau cov ntaub ntawv ua, chaw cia khoom, kev sib txuas lus, thiab tso saib. Nws tau txais cov ntaub ntawv los ntawm lub metering nti, xam tag nrho cov zog, xws li RS485, cov cab kuj sib txuas lus, lossis kev sib txuas lus tsis sib haum xeeb, lossis kev sib txuas lus wireless).
5.DISPlay thiab kev sib txuas lus module
Cov hluav taws xob meters yog feem ntau tau nruab nrog LCD zaub uas qhia cov ntaub ntawv tam sim no xws li cov ntaub ntawv tam sim no xws li lub zog, hluav taws xob, thiab lub zog. Kev sib txuas lus module txhawb kev hloov kho kom zoo nkauj siv cov qauv xws li modbus thiab dl / t645, ua rau nws siv hluav taws xob yooj yim rau cov ntaub ntawv hluav taws xob.
Peb {-} theem meter hluav taws xob 'ua haujlwm
1. Tus Neeg Tau Txais
Lub zog ntsuas lub zog ua ntej sau peb {- theem voltage thiab cov hloov hluav taws xob tam sim no siv cov teeb meem hluav taws xob (xws li lim thiab ua kom sov).
Cuag Tshaj Tawm
Lub ntsuas me me los yog microprocessine suav qhov kev siv fais fab inantantaneous ntawm txhua theem (P} u {}}}}}}}}}}}}}}}}}}}}}}}}
3.Usgle acimulation
Los ntawm kev sib koom ua ke (piv txwv li, kev txuam nrog lub zog dhau sijhawm), lub zog hluav taws xob suav tag nrho cov hluav taws xob ib lub sijhawm thiab cov khw muag khoom hauv sab hauv lub cim xeeb.
4.Data cov zaub thiab kev sib txuas lus
Lub zog ntsuas hluav taws xob qhia txog tiag - Cov ntaub ntawv hauv LCD ntawm kev tswj hwm cov ntaub ntawv (xws li RS485, lossis wireless), ua kom muaj kev soj ntsuam cov chaw taws teeb thiab ntsuas kev ua haujlwm.
Peb {{-} theem theem zog zog hom zog hom zog zog hluav taws xob
1.Txhua peb {-} theem meter hluav taws xob meter
Kev siv lub hauv paus ntsiab lus ntawm electromagnetic induction, lub zog hluav taws xob tsim los ntawm cov hluav taws xob thiab cov coils tam sim no drives kev sib hloov ntawm Aluminium disk. Lub tshuab tawm lub iav tom qab ntawd sau cov naj npawb ntawm cov kev hloov pauv, thaum kawg ua kom pom kev siv hluav taws xob.
2.Txhua peb {-}} meter lub zog ntsuas
Raws li cov teeb liab cav ua lag luam, nws siv lub siab {{Precistry ADC (analog} Digital los ntawm lub microprocessor, muab cov kev ua haujlwm siab dua thiab kev ua haujlwm ntse dua.
3. Cov {{-} }hase Meter
Kev sib xyaw nrog kev sib txuas lus, chaw taws teeb tswj, thiab kev txhawb nqa bidirectional meterting (xws li}} Connectional tiam), ua rau haum rau cov pob ntse.
Lub ntsiab
Peb {-} theem theem lub zog yog ntsuas peb} Cov cim hluav taws xob, ua rau lawv cov khoom siv hluav taws xob rau hluav taws xob thiab kev tswj hwm hluav taws xob. Nrog kev nce qib thev naus laus zis, hluav taws xob thiab ntse}}}}}}}} Cov qhab nia siab dua, kev ntseeg tau, thiab muaj peev xwm ua haujlwm, thiab muaj kev sib raug zoo, thiab muaj kev sib raug zoo, thiab muaj kev sib raug zoo, thiab muaj peev xwm ua haujlwm, thiab muaj kev sib raug zoo, thiab muaj kev sib raug zoo, thiab muaj kev ntseeg siab, thiab muaj peev xwm ua haujlwm. Nkag siab txog cov qauv kev ua haujlwm ntawm peb -}}}}}}}}}}}}} {theem kev tswj hwm thiab txhim kho kev ua kom muaj zog.
