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  • Users: mar888
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  1. mar888

    Power transformer oil analysis

    we have similar trnasformers with similar DGa values for more than 10 years and everything is OK please remember that: A fault is not a failure.
  2. mar888

    Oil analysis results

    I suggest rto perform oil particle analysis folowed by ferography or/and ICP it seemes a contamination or non compatible materials inside the trnasformer to oil. If you have a similar transformer it will help to examine same test.
  3. mar888

    tapchanger maintenance - schedules and scope

    TC in US differ from Europe. In us are on the low side and in Eurpoe in the high. DGA is not usefull becouse is TCG mainly depend on number of operation. We now investigate other techniques like metals, particles.
  4. mar888

    Gas Solubility in Oils

    Sorry for the delay We are measure dependence of gas in transformer oil solubolity mainly for the headspace application. The Henry law is obeyed, in the way that increasing the pressure will lower the gas concentration in gas phase. This is not appeear in the standart (ASTM) deal with this...
  5. mar888

    Gas Solubility in Oils

    You have to be aware that also the pressure have an impact on sollubilities. increasing pressure, lower the sollubility.
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