Mafuta oteteza ku ulusi wa varnish, omwe amadziwikanso kuti utoto kapena varnish woteteza ku ulusi, amagwira ntchito yoteteza ku ulusi, kukana chinyezi, kuwononga kutentha, komanso kuchiritsa mu ma transformer amphamvu kwambiri.
Malinga ndi kapangidwe kake ka mankhwala osiyanasiyana, mafuta otetezera kutentha amatha kugawidwa m'magulu atatu: opangidwa ndi polyester; gulu la Resin; Zipangizo za siliceous. Mafuta otetezera kutentha a polyester amakonzedwa makamaka ndi condensation reaction ya polyols ndi polyacids, ndipo nthawi zambiri amakhala opanda mtundu kapena achikasu chopepuka chowonekera. Ali ndi voltage yayikulu yowonongeka komanso kukana kwa voliyumu, zomwe zimatha kuletsa bwino kuti magetsi asadutse ndikupereka kutchinjiriza kwabwino. Ali ndi mtengo wotsika kwambiri pakati pa mitundu itatu ya mafuta otetezera kutentha ndipo ndi mafuta otetezera kutentha omwe amagwiritsidwa ntchito kwambiri mu ma transformer apamwamba.
Komabe, mafuta oteteza polyester ali ndi kukhuthala kwakukulu, ndipo kukhuthala kwake kumakhudzidwa kwambiri ndi kutentha. Kukhuthala kumawonjezeka kwambiri kutentha kochepa, zomwe zimakhudza kwambiri kukhuthala kwake ndi kutentha kwake. Chifukwa chake, ikagwiritsidwa ntchito, nthawi zambiri pamafunika kuwonjezera zinthu zosungunulira kuti muchepetse kukhuthala kwa mafuta oteteza, kusunga kukhuthala kwabwino, ndikuwonetsetsa kuti chosinthira chamagetsi chapamwamba chikhoza kumizidwa mokwanira panthawi yomiza. Mphamvu yeniyeni ya mafuta oteteza polyester ndi kukhuthala nthawi zambiri imakhala pafupifupi 0.9, yomwe ingayesedwe ndi mita inayake yokoka.
Kachiwiri, mafuta oteteza polyester amatha kuwonongeka mosavuta kutentha kwambiri, zomwe zimapangitsa kuti asidi ndi matope azigwiritsidwa ntchito bwino, zomwe zimakhudza momwe zinthuzo zimagwirira ntchito komanso kuchepetsa kugwiritsidwa ntchito kwake m'malo otentha kwambiri. Kuphatikiza apo, poyerekeza ndi mafuta oteteza utomoni ndi siliceous, mafuta oteteza polyester ali ndi ma dielectric loss tangent values apamwamba, zomwe zikutanthauza kuti kutayika kwa mphamvu kumakhala kwakukulu pansi pa magetsi osiyanasiyana ndipo kungakhudze magwiridwe antchito a chinthucho.
Pakadali pano, mafuta oteteza polyester amagwiritsidwa ntchito kwambiri poika ma windings, monga ma transformer apamwamba, ma mota, zingwe, ndi zina zotero, zomwe zingathandize kulimbitsa chitetezo cha mthupi, kuyendetsa bwino kutentha, komanso kukana chinyezi cha zinthu ndikuwonjezera moyo wawo wautumiki. Mafuta oteteza thupi ochokera ku resin amapangidwa makamaka ndi mankhwala a organic polymer, nthawi zambiri amakhala amadzimadzi kapena olimba, omwe amateteza bwino kuwonongeka.
Mafuta oteteza ku utomoni amatha kupangidwa mwa kusintha kuchuluka kwa zinthu zopangira ndi momwe zinthu zimachitikira kuti apange madzi a utomoni okhala ndi kukhuthala kochepa. Madzi awa ali ndi kukhuthala kwabwino komanso mawonekedwe abwino ophikira, ndipo nthawi zambiri safuna zowonjezera zowonjezera. Pa kutentha, mafuta oteteza ku utomoni amathanso kufewa kapena kusungunuka. Poyerekeza ndi mafuta oteteza ku utomoni a polyester, mafuta oteteza ku utomoni amakhala okhazikika kwambiri, amagwira ntchito bwino pakuteteza ku utomoni, komanso amakhala ndi mtengo wokwera. Amagwiritsidwa ntchito kwambiri poteteza ma transformer osiyanasiyana, malo olumikizira magetsi, ndi malo olumikizirana. Mafuta oteteza ku utomoni a siliceous amapangidwa makamaka ndi mankhwala a silicon achilengedwe monga polydimethylsiloxane. Nthawi zambiri ndi madzi opanda mtundu kapena achikasu owala omwe ali ndi kukhuthala kochepa kwambiri komanso kukhuthala kwabwino.
Poyerekeza ndi mafuta oteteza ku poliyesitala ndi resin, mafuta oteteza ku silika ali ndi mphamvu zochepa zotayika, mphamvu zochepa zotayika pansi pa magetsi osinthasintha, komanso magwiridwe antchito abwino kwambiri. Alinso ndi mphamvu zabwino zotsutsana ndi arc komanso kukana kutuluka kwa madzi, ndipo amatha kusunga magwiridwe antchito okhazikika m'malo ovuta kwambiri. Mafuta oteteza ku silika angagwiritsidwe ntchito poteteza ku madera ovuta kwambiri monga magetsi ambiri, kutentha kwambiri, chinyezi chambiri, komanso kuzizira kwambiri, zomwe zimapangitsa kuti zinthu zisamavutike komanso kudalirika kwa ntchito. Malo ake oyatsira moto kwambiri komanso mphamvu zake zozimitsira moto zimapatsa mafuta oteteza ku silika ubwino waukulu pachitetezo cha moto. Komabe, mafuta oteteza ku silika ali ndi mtengo wokwera ndipo nthawi zambiri sagwiritsidwa ntchito mu ma transformer apamwamba kwambiri.
Nthawi yotumizira: Epulo-13-2026
