Wararka

Mabda'a cabbiraadda dareeraha dc ee dahaye asal ahaan waa la mid kan cabbiraadda caabbinta daaha.
Farqiga u dhexeeya waa: dc danab korantada daadinta guud ahaan waa ka sarreeyaa megohmmeter danab, oo la hagaajin karaa, megohmmeter, haddii kale, waxa ay ka badan tahay waxtarka cilladaha helay by megger, xasaasi u ah in ay ka tarjumayso dahaarka porcelain dillaac, gudaha sandwich ah. dahaarka waxaa saameeya qoyaanka waxaa saameeya qoyaan iyo jab maxalli ah, xaalufka dahaadhka dabacsan ee saliidda, dhuxul dushiisa dahaarka, iwm.
Tijaabada danabka Dc iyo cabirka qulqulka hadda jira in kasta oo habka uu isku mid yahay, laakiin doorkiisu waa ka duwan yahay, kii hore waa in la tijaabiyo xoogga caabbinta dahaarka, korantada tijaabada ayaa ka sareysa;Midda dambe waxaa loo isticmaalaa in lagu hubiyo xaaladda dahaarka, korantada imtixaanku waa mid hooseeya.Sidaa darteed, iska caabbinta danabka dc waxay leedahay muhiimad gaar ah si loo helo cilladaha maxalliga ah qaarkood, waxaana si weyn loogu isticmaalaa baaritaanka ka hortagga matoorada-sare ee matoorada, fiilooyinka iyo capacitors.Waxay leedahay sifooyinka soo socda marka la barbar dhigo tijaabada cadaadiska.

1. Qalabka tijaabada waa mid fudud oo yar

Qalabka tijaabada korantada ee adkeysiga Dc waa mid fudud oo ku habboon baaritaanka ka hortagga ee goobta.Tusaale ahaan, xadhkaha fiilada, haddii ac u adkaysto tijaabada korantada, awoodda hadda ee kiiloomitirku waxay noqon doontaa dhowr amperes, oo u baahan qalab tijaabo ah oo weyn.Marka tijaabada danabka dc la sameeyo, kaliya dareeraha dahaarka ee hadda jira (ilaa heerka milliampere) ayaa la bixiyaa ka dib xasilinta.

2. Wuxuu cabbiri karaa qulqulka qulqulka isku mar

Dc u adkeysiga tijaabada danabku waxay si waxtar leh uga tarjumi kartaa ciladaha fiirsashada ee dahaarka iyadoo la cabbirayo qulqulka hadda iyadoo si tartiib tartiib ah kor loogu qaadayo korantada.Jaantuska 3-1 waxa uu tusinayaa qaar ka mid ah qaloocyada hadda daadsan ee dahaarka koronto-dhaliyaha inta lagu jiro tijaabada adkeysiga danabka dc.Dahaarka wanaagsan, qulqulka qulqulka ayaa si toos ah u kordha koronto qiimaha hadda waa yar yahay, sida lagu muujiyey qalooca 1. Haddii dahaarka uu qoyan yahay, qiimaha hadda ayaa kordha, sida lagu muujiyey qalooca 2. Curve 3 wuxuu muujinayaa jiritaanka cilladaha xoojinta dahaarka.Marka qulqulka qulqulka uu dhaafo heer go'an, sababta waa in la caddeeyaa inta suurtogalka ah si meesha looga saaro.Haddii qulqulka hadda socda ee ku dhow 0.5 jeer Ut uu si degdeg ah u kacay, sida ka muuqata qalooca 4, markaas koronto-dhaliye wuxuu halis ugu jiraa inuu burburo inta lagu jiro hawlgalka (marka laga reebo korontadu).

Marka dc adkeysiga tijaabada lagu sameeyo fiilooyinka korantada, akhrinta qulqulka hadda socda ayaa badanaa loo isticmaalaa si loo helo cilladaha.Tusaale ahaan, marka kala duwanaanshaha qulqulka saddexda weji ee hadda uu aad u weyn yahay ama qulqulka qulqulka uu si degdeg ah u kordho, tamarta tijaabada waa la kordhin karaa ama muddada adkeysiga danabku waa la kordhin karaa si loo helo cilladaha iyadoo loo eegayo xaaladda gaarka ah.

3. Dhaawac yar oo soo gaadha dahaadhka

Danab sare oo Dc ah ayaa dhaawac yar u geysta dahaarka alaabta la tijaabiyay.Marka danabka ku shaqeeya dc uu aad u sarreeyo oo qayb ka mid ah dareeruhu ku dhaco farqiga hawada, goobta korantada counter-ta ee ay keentay kharashka ka soo baxa dheecaanku wuxuu daciifin doonaa xoogga goobta ee farqiga hawada, sidaas darteed xannibaya habka qaybinta qayb ka mid ah farqiga hawada.Haddii ay tahay tijaabada danab ac, sababtuna tahay isbeddelka joogtada ah ee jihada korantada, sida qulqulka hawada hawada, mawjad kasta oo nus ah oo dareere ah, dareerahani wuxuu inta badan kor u qaadi doonaa burburka alaabta dabiiciga ah ee dabiiciga ah, sii xumaanshaha gabowga, hoos u dhigida dahaarka. waxqabadka, si ay cilladaha maxalliga ah si tartiib tartiib ah u ballaariyaan.Sidaa darteed, dc adkeysiga tijaabada danabka sidoo kale wuxuu leeyahay dabeecadda tijaabada aan burburin ilaa xad.

Marka la barbar dhigo ac adkeysiga tijaabada danabka, khasaaraha DC u adkaysta imtixaanka danab waa: sababta oo ah qaybinta danab kala duwan ee gudaha dahaarka hoos AC iyo DC, imtixaanka DC u adkaysta imtixaanka danab ma aha mid u dhow xaqiiqada sida ka hoos AC.Sidaa darteed, fiilada xLPE, looma soo jeedin in la isticmaalo tijaabada korantada DC, ka-soo-baxa tijaabada korantada DC ma fududa in la nadiifiyo, si sahlan u horseedo sii-haynta, dhaawaca imtixaanka.
Xulashada danabka dc ee u adkeysanaya korantada tijaabada sidoo kale waa dhibaato muhiim ah, waxay tixraac u tahay inta jeer ee awoodda dahaarka AC u adkeysiga danabka iyo ac, saamiga xoogga burburka DC, oo inta badan ku saleysan khibrad shaqo si loo horumariyo.Tusaale ahaan, dabaylaha stator ee koronto-dhaliyaha waa 2-2.5 jeer danabka la qiimeeyay;3, 6, 10kV fiiltoonni, qaamni 5 ~ 6 fi 20, 35kV, fi 4 ~ 5 ta'uu fi 35kV, fi 3 fi 35 kan ta'an ta'a.Waqtiga dc voltage adkeysiga tijaabada wuxuu ka dheeraan karaa kan AC danab u adkeysiga tijaabada, markaa tijaabada koronto-dhaliyuhu waa in lagu kordhiyo tamarta lagu qiimeeyay 0.5 jeer marxalad kasta, oo joog 1min marxalad kasta si aad u fiirsato una akhrido daadinta. qiimaha hadda.Inta lagu jiro tijaabada fiilada, korantada tijaabada waa in lagu sii wadaa 5min si loo eego loona akhriyo daadinta qiimaha hadda.