Читать книгу Alternative Liquid Dielectrics for High Voltage Transformer Insulation Systems - Группа авторов - Страница 61

The IEC 60599 standard is one of the prevalent approaches for an elucidation of the faults occurring in a transformer, which is based on ratios of five key gases: CH₄, H₂, C₂H₄, C₂H₆, and C₂H₂. In this method, the ratios R1, R2, and R5 are measured to make the interpretation of the faults as per Tables 2.5 and 2.6. A grouping of the individual codes of R1, R2, and R5 indicates the type of incipient fault. However, this method does not give very accurate results for all fault types.