Umhlahlandlela Wokukhetha i-WiFi Smart Energy Meter CT: Indlela Yokukhetha I-Clamp Yamanje Efanele

Isingeniso: Kungani Ukukhethwa kwe-CT Kubalulekile Ekulinganisweni Kwamandla Okuhlakaniphile kwe-WiFi

Uma kusetshenziswa i-Imitha yamandla ehlakaniphile ye-WiFi, abasebenzisi abaningi bagxila ekuxhumaneni, amapulatifomu esofthiwe, noma ukuhlanganiswa kwamafu. Kodwa-ke, ingxenye eyodwa ebalulekile ivame ukunganakwa:i-transformer yamanje (i-CT clamp).

Ukukhetha isilinganiso se-CT esingalungile kungathinta ngqo ukunemba kokulinganisa—ikakhulukazi ezimweni zomthwalo ophansi. Yingakho imibuzo efana nalena"Ingabe kufanele ngikhethe ama-CT angu-80A, 120A, noma angu-200A?" or "Ingabe i-CT enkulu isazoqhubeka nokuba nembambo emincane?"kuvame ukuvela ngesikhathi sokuhlela iphrojekthi.

Lo mhlahlandlela uchaza ukuthi ama-CT clamp asebenza kanjani, ukuthi kungani usayizi ofanele ubalulekile, nokuthi ungakhetha kanjani ububanzi be-CT obufanele bokuqapha amandla emhlabeni wangempela—kusetshenziswa izibonelo ezisebenzayo ezisekelwe kumamitha ahlakaniphile e-WiFi njenge-PC321.

Indlela Ama-CT Clamps Alinganisa Ngayo Amandla Kumamitha Amandla e-WiFi

I-CT clamp ilinganisa ugesi ngokuzwa insimu kazibuthe ekhiqizwa umqhubi. Isignali elinganisiwe ibe isiguquliwe ibe ugesi wesibili oncishisiwe ongacutshungulwa yimitha yamandla.

I-CT clamp ngayinye yaklanywa nge-isilinganiso samanje, njenge-80A, 120A, noma i-200A. Lesi silinganiso sichaza ububanzi lapho i-CT isebenza khona ngokunemba okuqinisekisiwe ngaphansi kwezimo zokuhlola ezijwayelekile.

Okubalulekile, ukunemba kwe-CT akufani kulo lonke uhla—kuncike ekutheni ugesi wangempela osebenzayo useduze kangakanani nogesi olinganiselwe we-CT.

Ukuqonda Izilinganiso Zokunemba Kwe-CT kanye Nezinga Lokusebenza

Ama-clamp amaningi e-CT ebanga lokulinganisa asetshenziswa kumamitha wamandla ahlakaniphile alandela amazinga okunemba e-Class 1.0.

Ukunemba kuchazwa ngaphakathi kobubanzi bamanje obusebenzayo, ngokuvamile kusuka ku-5% kuya ku-100% wamanje olinganisiwe, njengoba kuchaziwe ezindinganisweni zomhlaba wonke zama-transformer ezinsimbi (isibonelo,I-IEC 61869).

Ngaphakathi kwalolu hlu, i-CT ingafinyelela±Ukunemba kokulinganisa okungu-1% ngaphansi kwezimo zokuhlola ezijwayelekile.

Ngokwesibonelo:

A 200A CTigcina ukunemba kweKlasi 1.0 kusukela cishe10A kuya ku-200A
A 40A CTigcina ukunemba okufanayo kusukela cishe2A kuya ku-40A

Lokhu kuchaza ukuthi kungani usayizi we-CT uthinta ngqo ukusebenza kokulinganisa kwamandla aphansi.

Kwenzekani Uma I-CT Enkulu Ilinganisa Ugesi Omncane?

Umbuzo ovamile ukuthi ngabeI-200A CT ingalinganisa ngokunembile umthwalo we-40AImpendulo emfushane ithi:yebo, kuzosebenza—kodwa kungase kungabi ngcono kakhulu.

Kungani ukunemba kungawohloka emazingeni aphansi wamanje

Uma i-CT inkulu kakhulu:

Isignali yesibili iba ncane kakhulu uma i-currents iphansi
Ukulungiswa kokulinganisa kwehla
Umsindo kanye nephutha lesigaba kubonakala kakhulu
Amandla aphansi kanye nemithwalo yamandla aphansi ithinteka kakhulu

Nakuba i-CT ingase isahlangabezana nezidingo zeKlasi 1.0 ngaphansi kwezimo zelebhu,ukufakwa kwangempela—ngomsindo kagesi, imithwalo engaqondile, kanye nemisinga eguquguqukayo—ingabhekana nokunemba okuphansi komthwalo ophansi.

Yingakho ama-CT alingana nosayizi oseduze nesikhathi sangempela sokusebenza ngokuvamile enikezaukunemba okungcono okusebenzayo, noma ngabe womabili ama-CT ahlangabezana nesigaba esifanayo sokunemba okuqanjiwe.

Indlela Engcono Kakhulu Yokwenza: Indlela Yokukhetha Isilinganiso Esifanele Se-CT

Isinyathelo 1: Thola inani lamanje elilindelekile eliphezulu kakhulu

Sebenzisa okunye kwalokhu okulandelayo:

Isilinganiso se-circuit breaker
Ipuleti legama lemishini yamanje
Idatha yomthwalo womlando (uma ikhona)

Isinyathelo 2: Sebenzisa umthetho osebenzayo wokulinganisa ubukhulu

Isiqondiso sobunjiniyela esamukelwa kabanzi yilesi:

Isilinganiso samandla kagesi se-CT ≈ 1.2–1.5 × isilinganiso samandla esiphezulu sokusebenza esilindelwe

Le ndlela inikeza:

Umkhawulo owanele wemithwalo ephezulu
Isixazululo esingcono ngesikhathi sokusebenza okuvamile
Ukuziphatha okuthuthukisiwe kokulinganisa amandla aphansi

Ukukhethwa Okujwayelekile Kwe-CT Kwezicelo Zendawo Yokuhlala Nezebhizinisi

Ngokusekelwe kokuhlangenwe nakho kwangempela kokuthunyelwa ngeAmamitha ahlakaniphile e-WiFinjenge-PC321:

Ukufakwa kwezindlu zokuhlala

80A CT: Kufanelekela amafulethi amancane noma izifunda ezinamanzi aphansi
120A CT: Isetshenziswa kakhulu emakhaya aseNyakatho Melika, okunikeza ibhalansi enhle phakathi kokumbozwa kanye nokunemba komthwalo ophansi

Ukufakwa kwezentengiselwano

200A CT: Okuvamile ezindaweni zokondla zezentengiselwano ezilula kanye nezimboni ezincane
Ama-CT angu-300A noma ngaphezulu: Kusetshenziswa lapho usayizi wekhebula noma ukunwetshwa kwesikhathi esizayo kudinga indawo eyengeziwe yekhanda

Empeleni, abasebenzisi abaningi bakhetha ukwenza kube lula ukukhetha izinto ezimbili ze-CT—eyodwa yokuhlala kanye neyodwa yezentengiselwano—ukuze kube lula ukufaka impahla kanye nokusabalalisa izinto.

Usayizi Wekhebula Nobubanzi Befasitela Le-CT: Isithiyo Esisebenzayo

Ukukhetha i-CT akugcini nje ngokuphathelene nesilinganiso samanje.Ububanzi bekhebula kumele bulingane ngokomzimba ngefasitela le-CT.

Ngokwesibonelo:

Ama-CT amancane anganikeza ukunemba okungcono komoya ophansi
Ama-CT amakhulu ahlinzeka ngokuhambisana okubanzi kwekhebula kanye nokufakwa okulula

Lo mkhawulo wemishini uvame ukuthonya ukukhetha kwe-CT kanye nokucatshangelwa kukagesi.

I-Owon PC321 njengesibonelo esisebenzayo sokukhethwa kwe-CT

IImitha yamandla ehlakaniphile ye-PC321 WiFiisekela ububanzi obukhulu bezibambo ze-CT ezishintshashintshayo. Lokhu kuguquguquka kuvumela abaklami bezinhlelo ukuthi bahlele ukukhetha kwe-CT ngokusekelwe ku:

Layisha iphrofayela
Indawo yokufaka
Izidingo zokunemba
Ubukhulu bekhebula

Ngaphezu kwalokho, ukulinganiswa kwezinga lesistimu phakathi kwemitha kanye nama-CT clamp kusiza ukuqinisekisa ukusebenza okuthembekile kokulinganisa kuzo zonke izilinganiso ze-CT ezahlukene.

Ingabe Ukulinganisa Kungakhokhela Ama-CT Akhulu Kakhulu?

Ukulinganisa kungathuthukisa ukunemba kwesistimu iyonke, kodwaayikwazi ukuqeda ngokuphelele ukulinganiselwa okungokwenyama kwama-CT amakhulu kakhulukumaza aphansi kakhulu.

Nakuba ukulinganiswa kohlangothi lwemitha kanye nesinxephezelo sedijithali kusiza:

Imikhawulo yesignali kuya emsindweni isasebenza
Iphutha lesigaba kumandla aphansi lihlala liyisici

Ngakho-ke,Usayizi we-CT ofanele uhlala uyindlela ephumelela kakhulu yokufeza izilinganiso ezizinzile nezinembile.

Izinto Ezibalulekile Okufanele Uzicabangele Ngokukhetha I-CT

Ama-CT amakhulu angalinganisa imisinga emincane, kodwa ukunemba komthwalo ophansi kungancipha
Ukunemba kwe-CT kuqinisekiswa kuphela ngaphakathi kwephesenti elichaziwe lamanje alinganisiwe
Ukukhetha i-CT eseduze nobubanzi bokusebenza bangempela kuthuthukisa ukunemba komhlaba wangempela
Izimo zokufaneleka kwemishini kanye nokufakwa kwayo zibalulekile njengezilinganiso zikagesi
Izinketho ze-CT eziguquguqukayo, njengalezo ezisekelwa yi-PC321, zenza kube lula ukwenza ngcono uhlelo

Imicabango Yokugcina

Ukukhetha i-CT akukhona ukukhetha isilinganiso esikhulu kunazo zonke "ukuze nje uphephe." Kumayelana nokufanisa iqiniso likagesi nefiziksi yokulinganisa.

Ngokuqonda ukuthi usayizi we-CT uthinta kanjani ukunemba—ikakhulukazi kumaza aphansi—abasebenzisi bangenza izinqumo ezinolwazi ezithuthukisa ikhwalithi yedatha, ukuthembeka kohlelo, kanye nokuqonda amandla kwesikhathi eside.

NgobaAmamitha wamandla ahlakaniphile e-WiFi, ukukhetha i-CT efanele kungenye yezindlela eziphumelela kakhulu zokuqinisekisa ukuthi idatha elinganisiwe ibonisa ngempela indlela amandla asetshenziswa ngayo.