Isikhokelo sokukhetha i-WiFi Smart Energy Meter CT: Indlela yokukhetha iClamp yangoku efanelekileyo

Intshayelelo: Kutheni Ukukhethwa kwe-CT Kubalulekile kwi-WiFi Smart Energy Metering

Xa kusetyenziswa iImitha yamandla ehlakaniphileyo ye-WiFi, abasebenzisi abaninzi bagxila kuqhagamshelo, amaqonga esoftware, okanye ukuhlanganiswa kwelifu. Nangona kunjalo, icandelo elinye elibalulekileyo lidla ngokuthathelwa ingqalelo:i-transformer yangoku (i-CT clamp).

Ukukhetha ireyithingi ye-CT engalunganga kunokuchaphazela ngokuthe ngqo ukuchaneka komlinganiselo—ingakumbi kwiimeko zomthwalo ophantsi. Yiyo loo nto imibuzo efana nale"Ngaba ndifanele ndikhethe ii-CT ze-80A, 120A, okanye ze-200A?" or "Ngaba i-CT enkulu isaza kuba ichanekile kwiindlela ezincinci?"kuvela rhoqo ngexesha locwangciso lweprojekthi.

Esi sikhokelo sichaza indlela ezisebenza ngayo ii-CT clamps, isizathu sokuba ubungakanani obufanelekileyo bubaluleke, kunye nendlela yokukhetha uluhlu olufanelekileyo lwe-CT lokujonga amandla kwihlabathi lokwenyani—sisebenzisa imizekelo esebenzayo esekelwe kwiimitha ezikrelekrele zeWiFi ezifana nePC321.

Indlela ii-CT Clamps ezilinganisa ngayo i-current kwi-WiFi Energy Meters

I-CT clamp ilinganisa umbane ngokuva amandla emagnethi aveliswa ngumqhubi. Isignali elinganisiweyo emva koko iguqulwa ibe ngumbane wesibini oncitshisiweyo onokucutshungulwa yimitha yamandla.

I-CT clamp nganye yenzelwe ukuba ibe neumlinganiselo wangoku, njenge-80A, 120A, okanye i-200A. Olu vavanyo luchaza uluhlu apho i-CT isebenza khona ngokuchanekileyo phantsi kweemeko zovavanyo ezimiselweyo.

Okubalulekileyo kukuba, ukuchaneka kwe-CT akufani kulo lonke uluhlu—kuxhomekeke ekubeni umsinga osebenzayo usondele kangakanani kumsinga olinganisiweyo we-CT.

Ukuqonda ii-CT Accuracy Ratings kunye nee-Operating Ranges

Uninzi lwee-CT clamps ze-measurement grade ezisetyenziswa kwi-smart energy meter zilandela imigangatho yokuchaneka kweClass 1.0.

Ukuchaneka kuchazwa ngaphakathi koluhlu oluthile lwamandla okusebenza, ngesiqhelo ukusuka kwi-5% ukuya kwi-100% yamandla alinganisiweyo, njengoko kuchaziwe kwimigangatho yamazwe ngamazwe yee-transformers zezixhobo (umzekelo,I-IEC 61869).

Kule nqanaba, i-CT inokufikelela±Ukuchaneka kokulinganisa kwe-1% phantsi kweemeko zovavanyo ezisemgangathweni.

Umzekelo:

A 200A CTigcina ukuchaneka kweKlasi 1.0 ukusuka malunga10A ukuya kwi-200A
A 40A CTigcina ukuchaneka okufanayo ukusuka malunga2A ukuya kwi-40A

Oku kuchaza isizathu sokuba ubungakanani be-CT buchaphazela ngokuthe ngqo ukusebenza komlinganiselo wamandla aphantsi.

Kwenzeka ntoni xa i-CT enkulu ilinganisa umsinga omncinci?

Umbuzo oqhelekileyo kukuba ingabaI-200A CT inokulinganisa ngokuchanekileyo umthwalo we-40AImpendulo emfutshane yile:ewe, iza kusebenza—kodwa isenokungabi yeyona ifanelekileyo.

Kutheni ukuchaneka kunokwehla kumanqanaba aphantsi ombane

Xa i-CT inkulu kakhulu:

Isignali yesibini iba ncinci kakhulu xa kukho imisinga ephantsi
Isisombululo sokulinganisa siyancitshiswa
Ingxolo kunye nempazamo yesigaba zibonakala ngakumbi
Amandla aphantsi kunye nemithwalo yamandla aphantsi ichaphazeleka ngakumbi

Nangona i-CT isenokuhlangabezana neemfuno zeKlasi 1.0 phantsi kweemeko zelebhu,ukufakelwa kwehlabathi lokwenyani—ngengxolo yombane, imithwalo engangqalanga, kunye nemisinga eguquguqukayo—inokufumana ukuchaneka okuphantsi komthwalo.

Yingakho ii-CTs ezinobukhulu obusondeleyo kumbane osebenzayo ngokubanzi zibonelelaukuchaneka okungcono okusebenzayo, nokuba zombini ii-CT zifikelela kudidi olufanayo lokuchaneka okuqhelekileyo.

Eyona ndlela ilungileyo: Indlela yokukhetha i-CT Rating efanelekileyo

Inyathelo 1: Chonga umbane olindelekileyo ophezulu

Sebenzisa enye yezi zilandelayo:

Uvavanyo lwe-circuit breaker
Ipleyiti yesixhobo yangoku
Idatha yomthwalo wembali (ukuba ikhona)

Inyathelo lesi-2: Sebenzisa umthetho osebenzayo wokulinganisa ubungakanani

Isikhokelo sobunjineli esamkelweyo ngokubanzi sesi:

Umlinganiselo wamandla okusebenza we-CT ≈ 1.2–1.5 × okulindelekileyo ophezulu wamandla okusebenza

Le ndlela ibonelela:

Umgama owaneleyo wokuthwala imithwalo ephezulu
Isisombululo esingcono ngexesha lokusebenza okuqhelekileyo
Ukuphuculwa kokuziphatha kokulinganisa okuphantsi kwamandla

Ukhetho oluqhelekileyo lwe-CT kwizicelo zokuhlala kunye nezorhwebo

Ngokusekelwe kumava okwenyani okusasazwa kunyeIimitha ezikrelekrele ze-WiFiezifana nePC321:

Ufakelo lwezindlu zokuhlala

80A CT: Ifanelekile kwiiflethi ezincinci okanye iisekethe ezinombane ophantsi
120A CT: Eyona isetyenziswa kakhulu kumakhaya aseMntla Melika, inika ulungelelwaniso oluhle phakathi kokugubungela kunye nokuchaneka komthwalo ophantsi

Ufakelo lwezorhwebo

200A CT: Ixhaphakile kwiindawo zokutyisa ezikhaphukhaphu zorhwebo nezincinci
IiCT ezingama-300A okanye ngaphezulu: Isetyenziswa xa ubungakanani bentambo okanye ukwandiswa kwexesha elizayo kufuna indawo eyongezelelweyo yentloko

Enyanisweni, abasebenzisi abaninzi bakhetha ukumisela izinto ezimbini ze-CT—enye yeyokuhlala kunye nenye yeyorhwebo—ukuze kube lula ukuba impahla kunye nokusasazwa kwayo kube lula.

Ubungakanani beCable kunye nobubanzi befestile ye-CT: Umqobo osebenzayo

Ukukhethwa kwe-CT akupheleli nje ekulinganiseni okwangoku.Ububanzi bekhebula kufuneka bulingane ngokwasemzimbeni ngefestile ye-CT.

Umzekelo:

IiCT ezincinci zinokubonelela ngokuchaneka okungcono kombane ophantsi
IiCT ezinkulu zibonelela ngokuhambelana okubanzi kweentambo kunye nokufakelwa okulula

Le ngxaki yoomatshini idla ngokuchaphazela ukhetho lwe-CT kunye nezinto eziqwalaselwayo ngombane.

I-Owon PC321 njengoMzekelo oSebenzayo woKhetho lwe-CT

IImitha yamandla ehlakaniphile ye-PC321 WiFiIxhasa uluhlu olubanzi lwee-CT clamps ezitshintshanayo. Olu kuguquguquka luvumela abayili beenkqubo ukuba balungiselele ukhetho lwe-CT ngokusekelwe koku:

Layisha iprofayili
Indawo yokufakela
Iimfuno zokuchaneka
Ubukhulu bekhebula

Ukongeza, ukulinganiswa kwenqanaba lenkqubo phakathi kweemitha kunye nee-CT clamps kunceda ukuqinisekisa ukusebenza okuthembekileyo kokulinganisa kuzo zonke iireyithingi ze-CT ezahlukeneyo.

Ngaba iCalibration ingahlawulela ii-CT ezinkulu kakhulu?

Ukulinganisa kunokuphucula ukuchaneka kwenkqubo iyonke, kodwaayinakukwazi ukuphelisa ngokupheleleyo imida yomzimba ye-CTs ezinkulu kakhulukwimisinga ephantsi kakhulu.

Nangona ukulinganiswa kwecala lemitha kunye nokulungiswa kwedijithali kunceda:

Imida yokubonisa ingxolo isasebenza
Impazamo yesigaba kumbane ophantsi isaqhubeka nokuba yinto ebalulekileyo

Ngoko ke,ubungakanani obufanelekileyo be-CT buhlala buyindlela efanelekileyo yokufumana imilinganiselo ezinzileyo nechanekileyo.

Izinto ezibalulekileyo ekufuneka uziqwalasele xa ukhetha i-CT Selection

IiCT ezinkulu zinokulinganisa imisinga emincinci, kodwa ukuchaneka komthwalo ophantsi kunokuncipha
Ukuchaneka kwe-CT kuqinisekiswa kuphela ngaphakathi kwepesenti echaziweyo yamandla angoku alinganisiweyo
Ukukhetha i-CT ekufutshane noluhlu lokusebenza lokwenyani kuphucula ukuchaneka kwehlabathi lokwenyani
Imeko yokufaneleka koomatshini kunye nokufakelwa kwayo ibalulekile njengemilinganiselo yombane
Iindlela ze-CT eziguquguqukayo, ezifana nezo zixhaswa yi-PC321, zenza kube lula ukwenza ngcono inkqubo

Iingcinga Zokugqibela

Ukukhetha i-CT akubhekiselele ekukhetheni umlinganiselo omkhulu "ukuze nje ukhuseleke." Kumalunga nokuthelekisa inyani yombane kunye nefiziksi yokulinganisa.

Ngokuqonda indlela ubungakanani be-CT obuchaphazela ngayo ukuchaneka—ingakumbi xa kukho imisinga ephantsi—abasebenzisi banokwenza izigqibo ezinolwazi eziphucula umgangatho wedatha, ukuthembeka kwenkqubo, kunye nokuqonda amandla ixesha elide.

NgokubaIimitha zamandla ezikrelekrele ze-WiFiUkukhetha i-CT ngendlela eyiyo yenye yezona ndlela zisebenzayo zokuqinisekisa ukuba idatha elinganisiweyo ibonisa ngokwenene indlela esetyenziswa ngayo amandla.