Yuav Ua Li Cas Txuas 3 Theem Zog Meter: Kauj Ruam-by-Step Guide
Peb-theem hluav taws xob ntsuas hluav taws xob yog qhov tseem ceeb rau kev ntsuas hluav taws xob kom raug hauv kev lag luam thiab chaw lag luam.
Cov txheej txheem kev teeb tsa suav nrog xaiv qhov chaw zoo, txhim kho tam sim no transformers (CTs) thiab muaj peev xwm hloov pauv (PTs), txuas lub ntsuas hluav taws xob, thiab txheeb xyuas cov kev sib txuas.
Qhov loj me thiab xaiv CTs thiab lub nra hnyav yog qhov tseem ceeb rau kev ntsuas tam sim no.
Kev ntsuas kev nyeem ntawv tam sim no thiab saib xyuas kev siv hluav taws xob yog cov kauj ruam tseem ceeb rau kev tswj hwm lub zog kom zoo.
Kev sab laj nrog tus kws kho hluav taws xob thiab tus kws kho hluav taws xob muaj ntawv tso cai yog pom zoo ua ntej ua kev teeb tsa lossis kev hloov kho.
Nkag siab txog peb-theem meter txuas
Hauv cov chaw loj xws li cov tuam txhab thiab cov chaw tsim khoom, kev siv peb-theem meter txuas yog qhov tseem ceeb. Lawv pab ntsuas qhov hluav taws xob siv hluav taws xob ntau npaum li cas. Cov tshuab no muaj peb theem (A, B, thiab C) ntxiv rau qhov nruab nrab. Nrog rau kev sib txuas zoo, cov lag luam tuaj yeem saib xyuas lawv lub zog siv ze.
Qhov tseem ceeb ntawm peb-theem meter txuas
Kev sib txuas ntawm peb-theem meter yog qhov tseem ceeb hauv qhov chaw loj los ntsuas lub zog txoj cai. Lawv muab kev saib dav dav txog kev siv fais fab li cas, pab cov lag luam txiav nqi. Los ntawm kev teeb tsa cov ntsuas kom raug, lawv tuaj yeem pom qhov chaw uas lawv siv zog ntau dhau.
Cov ntsiab lus tseem ceeb ntawm kev sib txuas ntawm peb-theem meter
Lub ntsuas hluav taws xob peb theem, CTs, PTs, thiab lub ntsuas hluav taws xob yog qhov tseem ceeb. Lub zog ntsuas ntsuas ntsuas lub zog siv kom meej. CTs thiab PTs txo qis tam sim no thiab voltage kom muaj kev nyab xeeb. Lub metering vaj huam sib luag ua kom txhua yam ruaj ntseg thiab txuas nrog.
Yuav ua li cas txuas 3 theem zog ntsuas
Kauj Ruam 1: Xaiv qhov chaw tsim nyog
Txhawm rau teeb tsa lub ntsuas hluav taws xob peb theem, xaiv qhov chaw zoo ua ntej. Nws yuav tsum nyob ze rau lub ntsiab fais fab mov kom nkag tau yooj yim. Tsis tas li ntawd, khaws cia hauv tsev los tiv thaiv huab cua thiab tswj nws qhov tseeb.
Kauj ruam 2: Txhim kho Tam sim no Transformers (CTs)
Tom ntej no, koj yuav tsum muab tam sim no transformers (CTs) rau txhua theem. Xyuas kom tseeb tias cov CTs no zoo kawg nkaus nyob rau hauv txoj kab nrog cov xov hlau thiab txuas kom nruj. Qhov no yog qhov tseem ceeb rau lub ntsuas ntsuas ntsuas tam sim no kom raug.
Kauj Ruam 3: Txhim Kho Lub Taub Hau Transformers (PTs)
Tom qab ntawd koj txuas lub peev xwm hloov pauv (PTs) mus rau txhua theem, ua tib zoo mloog rau txoj cai polarity. Nws tseem yog ib qho tseem ceeb los ua kom cov PTs zoo. Ua li no tiv thaiv kev puas tsuaj los ntawm qhov hluav taws xob surges thiab txhawb kev nyeem qhov tseeb voltage.
Kauj Ruam 4: Txuas lub ntsuas hluav taws xob
Mount lub ntsuas hluav taws xob peb theem ruaj ntseg hauv vaj huam sib luag. Txuas cov CTs thiab PTs mus rau lub 'meter' terminals raws li phau ntawv qhia. Xyuas kom tag nrho cov xov hlau txuas zoo thiab fastened kom nruj.
Kauj Ruam 5: Txheeb xyuas cov kev sib txuas thiab kev sim ua
Txheeb xyuas txhua qhov kev sib txuas kom paub tseeb tias lawv muaj tseeb thiab zoo ua ntej qhib lub kaw lus. Thaum txhua yam muaj tseeb, kaw lub vaj huam sib luag. Tam sim no, nws yog lub sijhawm los pib lub kaw lus thiab sim nws kom lav qhov ntsuas tau meej.
Xaiv Cov Cheeb Tsam Zoo
Xaiv qhov zoo rau koj lub ntsuas hluav taws xob peb-theem yog qhov tseem ceeb. Nws pab ntsuas lub zog zoo thiab ua kom lub cev ua haujlwm tau zoo. Nov yog yam tseem ceeb uas yuav tsum tau xav txog thaum xaiv cov khoom.
Xaiv qhov Tsim Nyog Tam Sim No Transformer (CT)
Xaiv txoj cai tam sim no transformer (CT) yog qhov tseem ceeb rau kev nyeem ntawv lub zog. CT qhov loj me yuav tsum sib npaug rau qhov siab tshaj plaws txuas ntxiv lub zog siv los ntawm cov khoom siv hluav taws xob, feem ntau 110V lossis 220V. Rau cov txiaj ntsig zoo tshaj plaws, qhov sib piv ntawm CT yuav tsum nyob nruab nrab ntawm 500: 1 thiab 5000: 1.
Sizing lub Burden Resistor
Lub nra hnyav hloov pauv CT tam sim no rau hauv qhov hluav taws xob uas lub ntsuas hluav taws xob siv tau. Txhawm rau nrhiav nws qhov loj me, faib qhov siab tshaj plaws uas xav tau tam sim no los ntawm CT's lem ratio. Tom qab ntawd, txheeb xyuas qhov kev tawm tsam xav tau nrog R=V / I, thiab xaiv tus qauv tus nqi ze tshaj plaws.
Txiav txim siab Capacitor thiab Dividing Resistor tus nqi
Rau cov kev xav tau hauv tsev zoo tib yam, 10μF capacitor ua haujlwm zoo. Kev faib cov resistors, uas pab teeb tsa 2.5V siv hluav taws xob rau Arduino, yuav tsum muaj tus nqi tib yam. Piv txwv li, koj tuaj yeem siv ob 100kΩ resistors.
Calibrating thiab ua haujlwm ntawm Peb-Phase Energy Meter
Calibrating Kev Nyeem Ntawv Tam Sim No
Txhawm rau calibrate qhov kev nyeem ntawv tam sim no, siv lub calibrated load. Qhov no tuaj yeem yog cov teeb ci incandescent. Los ntawm kev sib piv cov 'meter' cov zaub nrog qhov tseeb load, koj kho qhov ntsuas qhov ntsuas. Qhov no ua kom cov kev nyeem tam sim no muaj tseeb.
Saib xyuas kev siv hluav taws xob
Tom qab calibration, koj tuaj yeem saib xyuas kev siv hluav taws xob. Lub 'meter' qhia tau hais tias tam sim no, lub zog, max zog, thiab kilowatt-teev rau txhua theem. Qhov no tso cai rau kev saib xyuas thiab kev tswj xyuas lub zog zoo.
