11kV trofazna oljna potopljenostna transformator
Ključne lastnosti
| Znamka | Rockwell |
| Model št | 11kV trofazna oljna potopljenostna transformator |
| Nominativna frekvenca | 50/60Hz |
| Nominirana kapaciteta | 500kVA |
| Serija | JDS |
Opisi izdelkov od dobavitelja
Opis
Pečanje transformatorji so klasificirani kot standardni reaktorji. Pečanje transformator (neutralni povezovalec) je trofazni transformator, povezan s sistemom oskrbe z energijo, ki zagotavlja neutralno povezavo za pečanje, ali neposredno ali preko impedancije. Pečanje transformatorji lahko tudi dodatno oskrbujejo lokalne pomožne obremenitve.
Med enofaznimi napakami omejuje reaktor tok napake v neutrali, kar izboljša obnovitev električne linije. Skladno s standardom IEC 60076-6 je neutralni reaktor povezan med neutralo sistema oskrbe z energijo in zemljo, da bi omejil tok od vrstice do zemlje pod pogoji napak v sistemu na želeno vrednost.
Pečanje transformator ustvari točko nevtralnosti za omrežje. Običajno se uporablja ZN povezava. Z povezava zagotavlja linearno in določeno impedanco nizkega zaporedja. Uporabljena lahko je tudi YN + d.
Značilnosti
Funkcionalna edinstvenost:
Izgradnja umetne točke nevtralnosti: Zagotavlja zanesljivo povezavo točke nevtralnosti za sisteme s nepovezanimi ali visoko impedančnimi povezanimi neutralnimi (kot so IT sistemi in resonantno povezani sistemi).
Upravljanje poti pečanja: Točka nevtralnosti se lahko neposredno peče ali peče preko reaktorja/odporca, natančno omejujejo enofazni tok napake pri pečanju (skladno s standardom IEC 60076-6).
Kontrola toka napake:
Ustvarjanje toka napake: Omejuje tok napake na zemljo na varno vrednost z vzpostavitvijo serije neutralnega reaktorja, preprečuje poškodbo opreme.
Pospeševanje obnove sistema: Zmanjšanje velikosti toka napake pomaga samozavrstvanju luka, skrči trajanje prekinitve oskrbe s strujom in izboljša zveznost oskrbe s strujom.
Načini povezave navojev:
ZN tip (zigzag povezava): Glavni načrt, ki zagotavlja linearno impedanco nizkega zaporedja, z močnim ravnovesjem magnetnega kraka in zmogljivostjo odpornosti na nasiti.
YN+d (zvezdica + delta): Sekundarni deltoidni navoj lahko oskrbuje pomožne obremenitve (dvigne funkcijo stacijskega servisnega transformatorja).
Kontrolabilna impedanca nizkega zaporedja: Vrednosti impedanc se lahko prilagodijo, da se zagotovi natančna ujemanje s strategijo zaščite sistema.Varnost in skladnost s standardi:
Skladno s standardom IEC 60076-6: Ureditev temperature, izolacije in zmogljivosti za uresničevanje kratkih krmeljnic neutralnih reaktorjev.
Omejevanje pretokov: Omejuje prehodne pretokove, ki jih povzročajo napake na zemlji, za zaščito izolacije opreme.
Glavni tehnični parametri
Q: Kateri so možni vzroki, ko se ničelna vrstična struja zazemljevalnega transformatorja nenadoma poviša?
A:
Poznajte svojega dobavitelja
Nenormalen naraščaj ničelne struje je tipičen zgodovinski signal med delovanjem zemljenjskih transformatorjev. Osnovni vzroki so razdeljeni na dve kategoriji, in odpravljanje težav mora slediti principu "sistem najprej, nato oprema": ① Sistemski vzroki: Najpogostejši je enofazni zemeljski okvar v distribucijskem omrežju (na primer bljičanje izolatorja na črtah, poškodba kabelov in zemljenje), v tem času bo ničelna struja sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer 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sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer sicer
Q: Kako izvesti predhodno odpravljanje težav, ko se ničelni tok zazemljevalnega transformatorja nenadno poviša?
A:
Predhodno odpravljanje težav mora slediti načelu "sistem pred električnim opremo", s koraki, kot so: Korak 1, preverite, ali je prišlo do enofaznega zemljenja preko nadzora napetosti (povečanje napetosti nevnapačnih faz, zmanjšanje napetosti v napačni fazi); Korak 2, preverite nedavne spremembe bremena in zapisnike o delovanju nelinearnih bremen, da izključite vpliv neravnovesja bremena ali harmonik; Korak 3, prekinite povezavo med transformatorjem za zemljenje/grounding in sistemom, neodvisno izmerite njegov neničelni upor in, če se razlika od tovarniške vrednosti preseže ±15 %, potrebna je dodatna vzdrževanja vezij in železnega jedra.
Spletna trgovina
Stopnja pravočasne dobave
Čas odziva
100.0%
≤4h
Pregled podjetja
Delovni prostor: 60000m²
Skupno število zaposlenih:
Najvišja letna izvozna vrednost v dolarjih: 100000000
Storitve
Vrsta posla: Načrtovanje/Proizvodnja/Prodaja
Glavne kategorije: Visokonapetostna oprema/transformator
Trajni zavarovalni upravnik
Storitve upravljanja z vsoživljenjsko oskrbo za nabavo opreme, uporabo, vzdrževanje in servis po prodaji, ki zagotavljajo varno delovanje električne opreme, neprekinjen nadzor in brezskrbno porabo električne energije.
Dobavitelj opreme je opravil potrdilo o ustreznosti platforme in tehnično oceno, s čimer zagotavlja skladnost, strokovnost in zanesljivost že v izvoru.
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