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Yadda za a zabar mai karewa - kar a yi watsi da wannan!

Idan babban darajar bayanai yana ba da ikon samfuran lantarki a cikin ginin, ikon su na jurewar walƙiya ya fi na kayan aikin lantarki na asali, ya zama dole a yi amfani damai kare karidon kula da irin waɗannan samfuran lantarki masu inganci, to, ta yaya za a zaɓi haɓakawa Me game da masu karewa?
Kafin zabar amai kare kari, Tabbatar da aiwatar da ƙididdigar haɗarin walƙiya da kuma la'akari da tattalin arziki na aikin, ba kawai hasara kai tsaye ba, har ma da lalacewa ta hanyar kai tsaye (don tsarin sarrafa bayanai, lalacewar kai tsaye yawanci ya fi girma fiye da Bugu da ƙari, dokoki da ka'idoji masu dacewa. yau bukatar shigarwa namasu kare karuwa, Kamar ma'auni na masana'antu na kasa irin su GB 50057. A ƙasa, zan bayyana yadda za a zabi mai kare kariya daga matakan da yawa.

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Don ƙarin tabbatar da cewa hadaddun tsarin samar da wutar lantarki da tsarin bayanai ba za su sami lahani ba ta hanyar walƙiya kai tsaye da tashin hankali, IEC 62305 ta fayyace ma'anar yankunan kariya na walƙiya a sarari.

LPZ 0A: Fuskar waƙar walƙiya kai tsaye, ɗauke da duk igiyoyin walƙiya da duk filayen lantarki na walƙiya.

LPZ 0B: Kariya daga faɗuwar walƙiya kai tsaye, jure juriyar walƙiya na halin yanzu ko jawo halin yanzu, da cikakken filin maganadisu na walƙiya.

LPZ 1: Kariya daga faɗuwar walƙiya kai tsaye, igiyoyin walƙiya na gida ko magudanar ruwa da aka jawo, da filayen walƙiya na walƙiya.Ƙaddamarwar ta iyakance ga kasancewa mai karewa a kan iyaka da kuma kiyaye shi ta hanyar mai karewa, kuma filin lantarki yana da kariya ta sararin samaniya.

LPZ 2…n: Mai kama da LPZ 1, amma tare da ƙarin attenuation na filin lantarki don faɗuwar walƙiya.A matsayin ka'idar kariyar gabaɗaya, yakamata a sanya abu mai kariya a cikin yankin LPZ wanda kaddarorin na'urorin lantarki suka dace da ikon jure lalacewa don rage lalacewa (lalacewar jiki, gazawar tsarin lantarki da na lantarki saboda yawan ƙarfin lantarki, da sauransu.微信图片_20220427140412

Yadda za a zabi daidaimai kare kari

Lokacin da ba zai yuwu a auna ma'auni na 1 ba (Nau'in 1, Class1), Iimp≥12.5kA ana amfani da shi gabaɗaya, wato 12.5kA ya isa a yawancin yanayi.Muna ba da shawarar yin amfani da Iimp=25kA, ta yadda za a sami Mafi girman ƙarfin, tsawon rayuwar sabis.

Don masu karewa masu tasowa na aji 2 (Nau'in2, Class2), mun zaɓi yin amfani da 20/40kA (In=20kA, Imax=40kA) masu kariyar wutar lantarki, kuma walƙiya ta faɗo sama da 40kA (bayan LPZ1) ba safai ake haifar da takamaiman aikace-aikace.na.Akwai nau'ikan nau'ikan masu karewa masu tasowa na Class 2 da yawa, gami da 40/80kA, 50/100kA, da 60/120kA masu kariyar karfin wutar lantarki.

Cika buƙatun aminci a cikin jihohin aiki uku

1. Yanayin jiran: halayen tsufa na ƙarfin lantarki, yanayin zafi da juriya na zafi, amintaccen ɗaukar halin yanzu na mai karewa mai tashar jiragen ruwa biyu;

2. Halin datsewar haɓakawa: Baya ga makamashin tsarin wutar lantarki mai aiki, mai karewa kuma yana da kuzari daga ƙarfin ƙarfin haɓaka;

3. TOV yanayin aiki: Damuwar wutar lantarki namai kare karishi ne yafi TOV aiki ƙarfin lantarki da halin yanzu.Wannan yana da alaƙa da ingancin grid, ƙarancin wutar lantarki da tsarin rarrabawa, tsarin rarraba wutar lantarki na matsakaici da hanyoyin ƙasa don rarrabawar masu rarrabawa.Abin da wannan ke buƙata shine ƙarfin mai karewa don jure yawan wuce gona da iri, wato, mai karewa mai ƙarfi zai iya jure UT da aka kayyade a cikin ma'auni.

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Takaddun shaida mai iko a gida da waje

A ƙarshe, yana da mahimmanci don zaɓar samfura tare da takaddun shaida na ɓangare na uku (kamar CE, TUV, CAS, CQC, da sauransu), kuma don zaɓar kamfanoni tare da tarin fasaha, fa'idodin fasaha, da mafita mai sauti.

A cewar TUV, CE, CQC da sauran takaddun shaida na kasa da kasa, mai karewa yana da kyakkyawar fasahar samarwa da fasahar sarrafawa a fagen kariyar walƙiya, kuma yana iya saduwa da buƙatun aikace-aikacen a ƙarƙashin matsanancin yanayi kamar yanayin zafi mai zafi, babban zafin jiki da wuraren faranti, da iya jure jitu halin yanzu da overvoltage na dogon lokaci.,Surge masu kare kariyaza a iya keɓancewa ga abokan ciniki a wurare na musamman.

 


Lokacin aikawa: Afrilu-27-2022

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