Transformer bushings yog cov khoom siv hluav taws xob tseem ceeb hauv cov tshuab hluav taws xob, feem ntau yog siv los ua kom muaj kev nyab xeeb ntawm qhov siab - thiab qis -voltage coj los ntawm sab hauv lub transformer mus rau sab nraud ntawm lub tank, thaum tib lub sij hawm muab rwb thaiv tsev thiab mechanical fixation rau hauv av. Lawv dais lub load tam sim no rau ncua sij hawm thiab yuav tsum tau tiv taus instantaneous siab -tam sim no surges nyob rau hauv txawv tej yam kev mob xws li luv luv circuits, yog li yuav tsum tau muaj kev ntseeg siab.
Cov yam ntxwv tseem ceeb ntawm transformer bushings muaj xws li:
Hluav taws xob rwb thaiv tsev muaj zog: Bushings yuav tsum muaj peev xwm tiv taus qhov ntsuas qhov ntsuas hluav taws xob thiab overvoltage surges los tiv thaiv flashover lossis tawg. Cov txheej txheem rwb thaiv tsev sib txawv yog siv rau cov qib sib txawv:
40kV thiab hauv qab no feem ntau siv cov plooj (porcelain bushings) ntshiab, nrog hluav taws xob porcelain ua cov khoom siv rwb thaiv tsev tseem ceeb; 60kV thiab saum toj no feem ntau siv cov roj- puv bushings lossis capacitive bushings, siv cov roj insulating los yog cov kev faib hluav taws xob ntawm cov capacitors los txhim kho kev ua haujlwm rwb thaiv tsev; 110kV thiab siab tshaj -voltage systems dav siv capacitive bushings, uas nws cov tub ntxhais yog ib tug capacitor core ua los ntawm ntau txheej ntawm txhuas ntawv ci thiab insulating ntawv interleaved, ua tau ib tug ntau uniform hluav taws xob teb faib los ntawm voltage equalization thiab ho txhim kho withstand voltage.
Lub zog muaj zog txaus: Bushings yuav tsum ruaj rau cov kev coj thiab tiv thaiv kev ntxhov siab xws li cov neeg xyuas pib sab nraud, cua thauj khoom, thiab av qeeg, tshwj xeeb tshaj yog nyob rau hauv siab - cov ntawv thov tam sim no (xws li, siab dua 800A). Magnetic shielding ntsuas kuj tseem tsim nyog los txo cov cua sov tam sim no.
Zoo Thermal Stability: Thaum lub sij hawm ntev - lub sij hawm ua hauj lwm thiab luv luv - Circuit Court faults, bushings yuav tsum muaj peev xwm tiv tau lub tshav kub uas tsim los ntawm nruam load tam sim no thiab lub siab - kub cuam tshuam ntawm ib tug luv luv Circuit Court yam tsis muaj thermal aging los yog structural puas.
Kev ua tau zoo sealing zoo: Bushings txuas rau sab hauv thiab sab nraud ntawm transformer; cov roj tank yuav tsum tau muab kaw kom tsis txhob muaj cov roj insulating thiab kev nkag ntawm huab cua thiab noo noo, yog li tsis txhob poob ntawm kev ua haujlwm rwb thaiv tsev. Niaj hnub nimno bushings feem ntau txais yuav ib tug tag nrho kaw tsim thiab nruab nrog ib tug roj conservator los tswj cov roj ntim hloov.
Compact Structure and Easy Maintenance: Cov bushings zoo tagnrho yuav tsum yog me me, hnav, thiab muaj ntau yam, thiab nruab nrog cov cuab yeej siv hauv av kawg (rau kev sim thiab kev saib xyuas haujlwm). Cov cuab yeej siv hauv av kawg yuav tsum muaj kev ntseeg siab hauv av kom tsis txhob muaj peev xwm ntab uas tuaj yeem ua rau muaj kev puas tsuaj ntawm cov rwb thaiv tsev.
Cov khoom siv thiab cov qauv sib txawv: Nyob ntawm qhov kev thov scenario, bushings tuaj yeem ua los ntawm ntau yam ntaub ntawv xws li ceramics, epoxy resin -impregnated iav fiber, Teflon, thiab silicone roj hmab.
