Roj-immersed transformers feem ntau yog siv cov ntxhia insulating roj (transformer roj) ua cov rwb thaiv tsev thiab cua txias nruab nrab.
Cov roj no tsuas yog ua kom zoo dua los ntawm cov roj av thiab muaj cov khoom siv hluav taws xob zoo, thermal stability, thiab tshuaj lom neeg ruaj khov, tiv thaiv kev tiv thaiv sab hauv luv luv thiab overheating hauv transformer. Cov khoom tseem ceeb ntawm transformer roj yog alkanes, cycloalkanes, thiab aromatics. Nws muaj qhov taw tes siab siab thiab qis viscosity, ua kom yooj yim ntws thiab kub dissipation. Tsis tas li ntawd, cov roj transformer yuav tsum muaj cov kua qaub qis, cov ntsiab lus tsis muaj dej noo, thiab cov oxidation zoo los xyuas kom meej lub sijhawm ntev -.
Kev xaiv cov roj hloov pauv yuav tsum ua raws li cov qauv thoob ntiaj teb (xws li IEC 60296) lossis cov qauv hauv tebchaws (xws li GB 2536). Cov cim qhia tshwj xeeb suav nrog lub zog dielectric, viscosity, flash point, thiab ncuav point. Hauv kev siv cov tswv yim, cov roj transformer tseem yuav tsum tau kuaj thiab tu kom tsis tu ncua los tiv thaiv kev laus los yog kev sib kis los ntawm kev cuam tshuam rau kev ua haujlwm ntawm transformer. Cov khoom siv kuaj pom muaj xws li kev txheeb xyuas cov roj yaj (DGA), ntsuas cov dej noo, thiab kev txiav txim siab tus nqi kua qaub.
Dhau li ntawm cov roj ntxhia insulating, cov roj hluavtaws ester lossis cov roj silicone kuj tseem siv tau rau qee qhov tshwj xeeb. Cov roj no muaj siab dua -kub tsis kam thiab cov khoom zoo ib puag ncig, tab sis kim dua. Cov roj hluavtaws ester feem ntau yog siv rau hauv cov khoom siv hluav taws xob ua haujlwm nyob rau hauv qhov siab load lossis kub kub, thaum cov roj silicone, vim lawv tsis yog - toxicity thiab siab flash point, yog haum rau cov ntawv thov uas yuav tsum muaj kev nyab xeeb siab.
Cov ntsiab lus hauv qab no kuj yuav tsum tau muab sau tseg thaum siv cov roj transformer: 1. Tsis txhob sib xyaw cov roj sib txawv kom tsis txhob muaj tshuaj lom neeg; 2. Khaws rau hauv lub thawv kaw, lub teeb - pov thawj tiv thaiv oxidation; 3. Lim lossis hloov cov roj tsis tu ncua kom tswj tau nws tus kheej
