This International Standard is a guide describing how the concentrations of dissolved gases or free gases may be interpreted to diagnose the condition of oil-filled electrical equipment in service and suggest future action.
This guide is applicable to electrical equipment filled with mineral insulating oil and insulated with cellulosic paper or pressboard-based solid insulation. Information about specific types of equipment such as transformers (power, instrument, industrial, railways, distribution), reactors, bushings, switchgear and oil-filled cables is given only as an indication in the application notes (see annex A).
The Guide may be applied only with caution to other liquid-solid insulating systems.
In any case, the indications obtained should be viewed only as guidance and any resulting action should be undertaken only with proper engineering judgment.
IEC 60599:1999 history
0000 IEC 60599:2022 CMV
0000 IEC 60599:2015 RLV
2007IEC 60599:1999/AMD1:2007 Mineral oil-impregnated electrical equipment in service - Guide to the interpretation of dissolved and free gases analysis; Amendment 1
2007IEC 60599:2007 Mineral oil-impregnated electrical equipment in service - Guide to the interpretation of dissolved and free gases analysis
1999IEC 60599:1999 Mineral oil-impregnated electrical equipment in service - Guide to the interpretation of dissolved and free gases analysis
1978IEC 60599:1978 Interpretation of the Analysis of Gases in Transformers and Other Oil-Filled Electrical Equipment in Service (Edition 1.0)