Overview
– Water in the transformer !?
– Physics of drying
– Onsite drying techniques Online Continuous Drying
– Online Transformer Dryer – DP100
– Practical Story of Online Drying
Introduction
– A moisture increase of 1% causes a doubling of the depolymerisation speed
– ۴% moisture at 50°C leads to a moisture content in the oil of 50 ppm. Is the oil quickly cooled down (power failure during winter), is it possible to have free water already at 20 °C
– With a too high moisture content, there is the risk of bubble formation in the insulation at much lower hot spot temperatures as 140°C as with dry insulation
ﺧﺸــﮏ ﺳــﺎزی ﻋﺎﯾﻘﻬــﺎی ﺳــﻠﻮﻟﺰی ﺗﺮاﻧﺴــﻔﻮرﻣﺎﺗﻮر ﺑــﻪ روش آﻧﻼﯾــﻦ و ﻣﻄﺎﻟﻌــﻪ ﻣﻮردی ﺑــﺮروی ﺗﺮاﻧﺴــﻔﻮرﻣﺎﺗﻮر ﻓــﻮق ﺗﻮزﯾــﻊ ﭘﺴــﺖ ﺑﻬﺸــﻬﺮ – ﺳﯿﺪ ﺣﺴﯿﻦ ﻣﺮﺗﻀﻮی
