Halbeegyada wareegyada korantada yar: waqti gaaban u adkeysanaya hadda (Icw), maxaa cabbirkan loo isticmaalaa?

U adkaysiga wakhtiga gaaban (Icw):Awoodda awareegga wareeggasi ay ugu adkeystaan ​​0.05, 0.1, 0.25, 0.5 ama 1s adoon ku dhicin danab la siiyay, hadda wareega gaaban, ama cunsur koronto.
Wakhtiga gaaban ee la qiimeeyay u adkaysiga hadda, sidoo kale loo yaqaan kulaylka deggan ee hadda jira, waa hadda wax ku ool ah ee jebiya wareegga ama qalab kale ay u adkeysan karaan muddo gaaban oo cayiman.Cabbirkiisu waxa uu la mid yahay wakhtiga wareegga gaaban ee la qiimeeyey wakhtiguna inta badan waa 3 ama 4 sekan.

Icw waa tusaha qiimaynta xasiloonida korantada iyo xasiloonida kulaylka ee jabiyaha safarka dib u dhaca gaaban.Waxaa loogu talagalay wareegga B heerka B.Caadiyan, VALUE-ga ugu yar ee Icw waa:

Marka gudaha≤2500A, waa 12In ama 5kA,

Marka gudaha>2500A, waa 30kA

(YUUW1_2000, Icw waa 400V, 50kA; DW45_3200, Icw waa 400V, 65kA).

Icw waxa lagu qiimeeyay in uu u adkaysan karo wakhtiga gaaban:Soo-saareyaashu waxay sheeganayaan in RMS-ga loo dulqaadan karo muddo gaaban oo lagu qeexay hadda iyo wakhtiga loo tixgelin karo inay RMS u dulqaadan karto badeecada waqti xaddidan, iyadoo la raacayo shuruudaha ku habboon, qalab iyo qalab koronto oo dhamaystiran.Laakiin dabeecadda alaabooyinka kala duwan ma aha mid isku mid ah, qeexida lagu qiimeeyay dulqaadka wakhtiga gaaban qiimaha hadda ma noqon doono mid gebi ahaanba la mid ah, udub dhexaadkeedu waa inta badan qodobada soo socda:

• Hubi in lagu kalsoonaan karo nidaamka korontada;

• Iyada oo ku saleysan hubinta isku halaynta nidaamka bixinta korantada, amniga badeecada lafteeda

Nidaamka qaybinta korantada hooseeya, wakhtiga gaaban ee lagu qiimeeyay wakhtiga gaaban waxaa lagu go'aamiyaa wakhtiga gaaban ee gaaban ee laga yaabo inuu ku dhaco nidaamka goobta rakibida iyo wakhtiga sheyga laftiisa iyo alaabta kale ee nidaamka ay u adkeysan karaan hadda.

Heerka Iec60364-4-43 ee ilaalinta wareegga gaaban ee nidaamka qaybinta awoodda ayaa si cad u sheegay: meel kasta oo ka mid ah loop sababtoo ah wareegga gaaban ee ay sababaan dhammaan hadda, waa in aan ka badnayn hadda, kaareeyaha nidaamka kama badna heerkulka xaddidan ee la oggol yahay. waqtiga jabinta.

Wareegyada gaagaaban ee aan ka badnayn 5 ilbiriqsi, wakhtiga (t) kaareeyaha uu ka kici karo heerkulkiisa caadiga ah ee la ogolyahay ilaa heerkulkiisa ugu badan ee la ogol yahay ayaa qiyaas ahaan lagu xisaabin karaa qaacidada soo socota:

T = (k * S/I) 2K isku-dhafan walxaha, Aagga kooraha S, I-gaaban qiimaha hadda jira.

Xagga sare, dooro qalabka cadaadiska hooseeya ee lagu qiimeeyay iska caabbinta wakhtiga gaaban qiimaha hadda, laga bilaabo goobta rakibaadda ee ugu badan ee hadda jira, kaari ama qalab kale oo nidaamka ka soo kaca heerkulka hawlgalka ilaa heerkulku wuxuu u adkeysan karaa xadka waqtiga, labadan dhinac. in la tixgeliyo, si loo go'aamiyo goobta rakibaadda ugu badan ee wareegga gaaban ee hadda jira iyo nidaamku wuxuu u adkeysan karaa ugu badnaan wakhtiga gaaban ee wakhtiga, Waxa kale oo ay go'aamisaa dulqaadka wakhtiga gaaban ee wakhtiga gaaban ee qalabka korantada hoose ee goobta rakibidda.

Sababtoo ah qaabka iyo isticmaalka qalabka korantada ee kala duwan way kala duwan yihiin, waxaa jira shuruudo gaar ah oo loogu talagalay qiimaha wakhtiga gaaban ee wakhtiga xaadirka ah iyada oo ku saleysan qancinta nidaamka badbaadada:

• Qalabka korantada sida baska, armaajooyinka qaybinta korantada yar-yar, iyo furayaasha kala goynaya, qiimaha gaaban ee hadda jira waa in aanu ka hoosayn qiimihii wareega gaaban ee hadda la filayo ee barta rakibaadda, iyo wakhtiga xaddidan ee wareegga gaaban ma aha mid ka gaaban wakhtiga hawlgalka qalabka ilaalinta ee nidaamka.

• Wareegyada wareegga ee isticmaalaya fasalka B, qiimaha dulqaadka gaaban waa inuusan ka yarayn qiimaha hadda jira ee gaaban ee la filayo ee goobta rakibidda, iyo wakhtiga xaddidan ee dulqaadka gaaban waa inuusan ka yarayn wakhtiga hawlgalka ee nidaamka hoose. -qalabka ilaalinta heerka, oo hubi xulashada qalabka ilaalinta heerka hoose.

Hadda, load nidaamka sahayda korontada iyo la filayo kororka hadda-wareeg gaaban, qaybinta cufnaanta nidaamka baska, miniaturization qalabka korantada hoose-yar, haddii kaliya raacitaanka dulqaadka muddada-gaaban hadda hoos waqtiga dheer ee qiimaha sare, dhab ahaantii, ma jirto muhiimad weyn oo la taaban karo.

Markaa iyadoo loo eegayo suurtogalnimada dhibcooyinka rakibaadda ee ugu sarreeya ee wareegga-gaaban ee hadda jira iyo aaladaha kale ee nidaamka waxay u adkeysan karaan waqtiga ugu sarreeya ee wareegga gaaban ee waqtiga, xulashada macquulka ah ee qalabka korantada ee badbaadada waqtiga xaddidan ee iska caabbinta muddada-gaaban qiimaha hadda, in iyadoo la raacayo 0.5 s Icw qiyamka imtixaanku wuxuu u muuqdaa inuu awooday inuu buuxiyo shuruudaha amniga nidaamka iyo waxtarka ugu badan.