Indlela yokujongana nephutha le-transformer yangoku?

Umthwalo wesibini we-transformer yangoku ichaphazela ngokuthe ngqo ukusebenza kwayo okuchanekileyo.Ngokuqhelekileyo, ubukhulu bomthwalo wesibini, inkulu impazamo ye-transformer.Ngethuba nje umthwalo wesibini awugqithisi ixabiso lokumisela lomenzi, umenzi kufuneka aqinisekise ukuba impazamo eyenziwa yi-transformer ingaphakathi kwinqanaba lokuchaneka okanye phakathi kwe-curve ye-10% yephutha.Ngaphakathi.Ngoko ke, ngexesha lokusetyenziswa kwe-transformer yangoku, umthwalo wayo wesibini olinganisiweyo kunye nomthwalo wesibini wangempela kufuneka waziwe.Kuphela xa umthwalo wesibini wangempela ungaphantsi komthwalo wesibini olinganisiweyo apho impazamo inokuhlangabezana neemfuno.

Xa impazamo ye-transformer yangoku idlula ixabiso elichaziweyo lomenzi, liya kuba nemiphumo emibi kwizixhobo zesibini ezifana nokukhuselwa kwe-relay kunye nezixhobo zokulinganisa.Amanyathelo okubuyisela kufuneka athathwe xa impazamo ye-transformer yangoku idlula ixabiso elichaziweyo lomenzi.

(1) Ukwandisa indawo ye-cross-sectional cable yesibini okanye ukunciphisa ubude bentambo.Ukwandisa ummandla we-cross-sectional we-cable yesibini ye-loop yangoku okanye ukunciphisa ubude bekhebula ngokwenene kunciphisa i-impedance yocingo lwesibini lwesibini kunye nokunciphisa umthwalo wesibini.

(2) Qhagamshela i-coil yesibini ye-transformer yangoku yogcino kuthotho ukuphinda kabini umthwalo.Iikhoyili zesibini ze-transformer zangoku ezikwisigaba kunye nomlinganiselo ofanayo wokuguqulwa kunye neempawu ezifanayo zisetyenziselwa uchungechunge.

(3) Ukwandisa umlinganiselo wenguqu ye-transformer yangoku okanye usebenzise i-transformer yangoku kunye ne-second rated current ye-1A.Ngokomgaqo wokuba ukulahlekelwa komgca kuhambelana nesikwere sangoku, kunokubonwa ukuba ukulahleka komgca kuya kuba kuncinci kwaye i-impedance yemveliso iba nkulu, ngoko umthwalo wokuthwala umthwalo uqiniswa.

(4) Nciphisa umthwalo wesibini.Khetha i-relay kunye ne-current setting enkulu kangangoko kunokwenzeka, kuba i-wire diameter ye-relay coil kunye ne-current setting enkulu inzima kwaye inani lokujika lincinci, ngoko ke i-impedance nayo incinci;okanye utshintshe uxhulumaniso lwechungechunge lwekhoyili ye-relay kuxhulumaniso oluhambelanayo, ngenxa yokuba i-impedance yoqhagamshelwano lwechungechunge I-impedance inkulu kunoxhumo oluhambelanayo;okanye usebenzise isixhobo sokukhusela i-microcomputer endaweni ye-electromagnetic relay.

Uvavanyo lwe-insulation resistance of transformer yangoku

1. Injongo yovavanyo

Inokufumana ngokufanelekileyo iziphene zokugquma, ezinje ngokufuma, ubumdaka, ukungena, ukwaphuka kwe-insulation, njl., kunye nobushushu obugqithisileyo kunye neziphene zokwaluphala.Ukulinganisa ukunyanzeliswa kwe-insulation ye-shield yokugqibela emhlabeni kunokubona ngokufanelekileyo ukungena kwamanzi kunye neziphene zomswakama we-capacitive current transformer.

2. Uvavanyo lomda

Ukulinganisa ukunyanzeliswa kwe-insulation ye-primary winding ukuya kwi-winding yesibini kunye ne-casing, kunye ne-insulation resistance resistance nganye yesibini kunye ne-casing.

Ukulinganisa ukuchasana kwe-insulation phakathi kweendawo eziphambili zokujija, kodwa akuyimfuneko ukulinganisa xa ingenakulinganiswa ngenxa yezizathu zesakhiwo.

Ukulinganisa ukunyanzeliswa kwe-insulation ye-shield yokugqibela ye-capacitive current transformer.

HV Hipot GDHG-306D Transformer Comprehensive Tester
3. Ukukhethwa kwezixhobo

Ukulinganisa ukuchasana kwe-insulation phakathi kwe-insulation engundoqo ye-transformer yangoku, i-shield yokuphela, i-winding yesibini kunye nomhlaba.Umvavanyi wokumelana ne-Insulation ye-2500V nangaphezulu kufuneka isetyenziselwe ukugcinwa okanye uvavanyo lokunikezela kunye novavanyo lothintelo.

4. Uhlalutyo lwamanqaku omngcipheko kunye namanyathelo okulawula

ukuthintela ukuwa ukusuka kumphakamo

Thintela ukwenzakala kwizinto eziwayo

ukuthintela ukothuka kombane

Ngaphambi kokuqhawula kunye nokudibanisa umgca wokuvavanya, i-transformer phantsi kovavanyo kufuneka ikhutshwe ngokupheleleyo emhlabeni ukuze ithintele intlawulo eseleyo kunye ne-voltage ebangelwa ukubangela ingozi kubantu kunye nokuchaphazela iziphumo zokulinganisa.I-casing yensimbi yesixhobo sokuvavanya kufuneka isekelwe ngokuthembekileyo, kwaye umvavanyi osebenzisa isixhobo kufuneka eme phezu kwe-insulating pad okanye anxibe i-slash slash ukuze asebenzise isixhobo.Iitoni zovavanyo kufuneka zilungelelaniswe nomntu ophetheyo, kwaye ukusebenza ngokunqamlezayo akuvumelekanga.

Misela iindawo zokuhlala ezivaliweyo malunga nesiza sovavanyo, xhoma iimpawu “zokuyeka, ingozi yombane ophezulu”, kwaye womeleze ukubeka iliso.Ukomeleza ukongamela nokuphumeza inkqubo yokucula esebenzayo.

5. Ukulungiselela phambi koviwo

Qonda iimeko zentsimi kunye neemeko zovavanyo lwesixhobo esiphantsi kovavanyo.

Gqibezela izixhobo zovavanyo kunye nezixhobo

Thatha amanyathelo okhuseleko kunye nobugcisa kwindawo yovavanyo

Abavavanyi beebhokisi kufuneka bachaze umxholo womsebenzi, iindawo ezihlala kuzo, imilinganiselo yokhuseleko kwindawo, iindawo ezinobungozi bokusebenza kwindawo, kwaye bacacise ukwahlulwa kweenkqubo zabasebenzi kunye novavanyo.

6. Amanyathelo ovavanyo lwangaphandle kunye neemfuno

Jonga i-megohmmeter ngokwayo phambi kovavanyo, beka inqanaba le-megohmmeter ngokuzinzileyo, uvavanyo lokuqala lwesekethe emfutshane kwaye emva koko uvavanyo oluvulekileyo lwesekethe, xa uqhagamshelwe kunikezelo lwamandla ombane olungisiweyo we-megohmmeter, ucingo lwe-Uno luya kujikeleza "L" kwaye "E"" i-terminal, isalathisi kufuneka sibe nguziro; xa ilayitiwe, xa amandla elayitiwe okanye isantya esibekiweyo sichazwa ngee-megohms, uphawu kufuneka lube ngu-“∞”. kwaye emva koko uqhagamshele i-terminal yombane ophezulu.

I-terminal "E" kwi-megohmmeter yi-terminal yomhlaba yento yokuvavanya, eyi-polepositive pole, kwaye "L" i-terminal ye-high-voltage yemveliso yovavanyo, eyipali engafanelekanga."G" idityaniswe kwitheminali yekhaka, eyipali engalunganga.

7. Uvavanyo lokumelana ne-insulation

Ukulinganisa ukunyanzeliswa kwe-insulation ye-primary winding ye-transformer yangoku ukuya kwinqanaba lesibini kunye negobolondo

Ukulinganisa ukunyanzeliswa kwe-insulation phakathi kwe-second winding ye-transformer yangoku kunye nomhlaba

Ukulinganisa ukuxhatshazwa kwe-insulation yekhuselo lokugqibela le-transformer yangoku

Ukulinganisa ukunyanzeliswa kwe-insulation of the primary winding

I-primary windings i-P1 kunye ne-P2 ye-transformer yangoku i-short-circuited kunye neengcingo ezimfutshane, zonke ii-windings zesibini zifutshane-zijikeleze emhlabeni, kwaye ikhuselo lokugqibela lifutshane-lijikeleza emhlabeni.(Ukuba umphezulu we-transformer unzima kakhulu, i-ring shielding ring kufuneka ifakwe kwaye ixhunywe kwi-terminal ye-"G" ye-megger kunye nentambo ye-insulated.)

I-terminal "L" ye-high-voltage insulation tester iqhagamshelwe kwi-primary winding P1 kunye ne-P2 ye-terminal ye-transformer yangoku okanye ucingo olufutshane, kwaye i-terminal "E" isekelwe.

Emva kokujonga i-wiring, cinezela iqhosha elithi "Qala", kwaye imitha iqala ukusebenza.Emva komzuzu we-1, ixabiso lokumelana ne-insulation liya kubhalwa.Emva kokuba uvavanyo lugqityiwe, imitha kufuneka ikhutshwe kwisampuli, uze ucinezele iqhosha elithi "stop" ukuqala kwakhona imitha.

Ekugqibeleni, khupha inxalenye yovavanyo ye-transformer yangoku.