Iyo transformer AC inomira voltage bvunzo bvunzo umo sinusoidal simba frequency AC bvunzo voltage inodarika imwe yakawanda yeiyo yakatemerwa voltage inoiswa kune mahwindi eiyo yakaedzwa transformer pamwe nebushing, uye nguva i1 min.Chinangwa chayo ndechekushandisa test voltage yakakwira kupfuura imwe yakawanda yevoltage yakayerwa kutsiva iyo yemhepo overvoltage uye overvoltage yemukati kuti iongorore mashandiro ekudzivirira kweshanduko.Iyo inzira inoshanda yekuona simba rekudzivirira rematransformer, uye zvakare chinhu chakakosha chekuyedza kuti ive nechokwadi chekushanda kwakachengeteka kwevashanduri uye kudzivirira tsaona dzekudzivirira.Kuitisa AC inomira voltage bvunzo inogona kuwana hunyoro uye yakaomeswa kuremara mu transformer main insulation, senge mhepo huru yekuvharisa makatsemuka, kupepeta kusunungura uye kutamiswa , Iyo inotungamira yekudzivirira kureba haina kukwana, uye iyo insulation inonamatira kune hurema hwakaita setsvina.
HV Hipot GDTF yakatevedzana tambo frequency kutendeuka yakatevedzana resonance inomira voltage test mudziyo
Iyo AC inomira voltage bvunzo bvunzo inoparadza muyedzo yekuisa.Inofanirwa kuyedzwa mushure meimwe isingaparadze bvunzo (senge insulation kuramba uye absorption reshiyo bvunzo, DC kuvuza bvunzo, dielectric kurasikirwa kururamisa kucheka uye insulating oiri bvunzo) vanokwanisa..Mushure mekunge bvunzo iyi inokodzera, iyo transformer inogona kuiswa mukushanda.AC inomira voltage test ndiyo yakakosha bvunzo.Nokudaro, mitemo yekudzivirira yekudzivirira inotara kuti transformer ine 10kV uye pasi, mumakore 1 ~ 5, 66kV uye pasi, inofanira kuiswa pasi peAC inomira magetsi mushure mekugadzirisa, mushure mokutsiviwa kwema windings uye kana zvakakodzera muedzo.
Test method
(1) Test wiring Diki nepakati magetsi emagetsi pazasi 35kV anoiswa ne AC inomira voltage test wiring.Yese windings inofanira kuongororwa.Panguva yekuyedzwa, waya dzinotungamira dzechikamu chimwe nechimwe chekutenderera dzinofanira kupfupika-kutenderedzwa pamwechete.Kana nzvimbo isina kwayakarerekera iine waya dzekutungamira, waya dzinotungamira dzinofanirawo kunge dziri pfupi-yakatenderedzwa nezvikamu zvitatu.
(2) Test voltage The handover test standard inotaridza kuti matransformer ane simba riri pasi pe8000kV uye ma winding rated voltage pazasi 110kV achaiswa pa AC with voltage test test inoenderana ne test voltage standards dzakanyorwa muAppendix 1 ye standard.Mitemo yekudzivirira yekuyedza inotemerwa: Iyo yekuyedza voltage kukosha kweoiri-yakanyudzwa transformer yakatsanangurwa mutafura yemitemo (yenguva dzose bvunzo inotsiva iyo inotenderera voltage kukosha nechikamu).Kune dzakaoma-mhando transformers, kana ma windings ese akatsiviwa, tevera fekitori test voltage kukosha;kuitira kutsiva zvishoma kwema windings uye bvunzo dzenguva dzose, dzvanya 0.85 nguva iyo fekitori test voltage kukosha.
(3) Chengetedzo Pamusoro peyakajairwa AC inomira voltage test precautions, anotevera mapoinzi anofanirwa kucherechedzwa zvinoenderana nehunhu hwetransformer:
1) Iyo yekuyedza shanduri inofanirwa kuve ine overcurrent yekudzivirira rwendo mudziyo.
2) Iyo AC inomira voltage test yetatu-phase transformer haidi kuitwa muzvikamu.Zvisinei, waya dzose dzinotungamirira dzezvikamu zvitatu zvekubatanidza mhepo dzinofanirwa kupfupika-kutenderera kusati kwaedzwa, kana zvisina kudaro hazvizongokanganisa kurongeka kwevheji yekuedza, asi zvinogona kutoisa pangozi kuvharidzirwa kukuru kweshanduro.
3) Mitemo yekudzivirira yekudzivirira inonongedza kuti kune ese-akavharirwa shanduri pazasi 66kV, kana nzvimbo dzesaiti dzisipo, chete yekunze yekuvaka frequency inomira voltage test inogona kuitwa.
4) Kune ma transformer emagetsi ayo ane kwaakarerekera point insulation asina kusimba pane zvimwe zvikamu kana graded insulation, iyo iri pamusoro ekunze AC inomira voltage test haigone kushandiswa, asi induction inomira voltage test ye1.3 times iyo yakayerwa voltage inofanirwa kushandiswa.
5) Inofanira kuongororwa mushure mekuzadza nemafuta akakodzera uye kuzorora kweimwe nguva yenguva.
6) Kune ma-medium- and small-capacity transformers ane voltage level ye 35kV, test voltage inobvumirwa kuyerwa pa-low-voltage side ye test transformer.Kune magetsi emagetsi ane hukuru hukuru, kuitira kuti kuyerwa kuve kwakarurama uye kwakavimbika, voltage transformer kana electrostatic voltmeter inofanira kushandiswa.The test voltage inoyerwa zvakananga padivi repamusoro voltage.
7) Kana kubuda kana kuputsika kukaitika panguva yekuyedzwa, pakarepo dzikisa voltage uye cheka magetsi kuti udzivise kutadza kwakawedzera.
Nguva yekutumira: Jan-05-2022