Method for evaluating sulfur corrosion state of transformer copper coil
A technology of copper coils and transformers, which is applied in the fields of weather resistance/light resistance/corrosion resistance, instruments, scientific instruments, etc., can solve the safety hazards and detection problems of copper coils, achieve fast methods, avoid transformer damage, good economic benefits and safety benefit effect
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[0038] (1) The sulfur element content in a 110kV transformer oil was detected twice at intervals of 3 years by plasma emission spectroscopy to be 500mg / kg and 400mg / kg;
[0039] (2) The difference between the two detections of sulfur element concentration is 100 mg / kg;
[0040] (3) The oil weight of this transformer is 20 tons, and the mass of cuprous sulfide can be calculated according to the formula to be 10kg;
[0041] (4) The volume of cuprous sulfide is 1.8L, and the total surface area of the coil copper wire obtained from the query data is 264m 2 , the calculated thickness of cuprous sulfide is 6800nm;
[0042] (5) According to the classification of risk level, the transformer is in high risk level A.
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