IEC 60599:2015 ED3

Mineral oil-filled electrical equipment in service - Guidance on the interpretation of dissolved and free gases analysis IEC 60599:2015 ED3

Publication date:   Sep 16, 2015

General information

99.60 Withdrawal effective   May 25, 2022


TC 10

International Standard

17.220.99   Other standards related to electricity and magnetism | 29.040.10   Insulating oils | 29.180   Transformers. Reactors



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IEC 60599:2015 is available as IEC 60599:2015 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 60599:2015 describes 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 standard 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. This standard may be applied, but only with caution, to other liquid-solid insulating systems. This third edition cancels and replaces the second edition published in 1999 and Amendment 1:2007. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) revision of 5.5, 6.1, 7, 8, 9, 10, A.2.6, A.3, A.7;
b) addition of new sub-clause 4.3;
c) expansion of the Bibliography;
d) revision of Figure 1;
e) addition of Figure B.4.

Life cycle


IEC 60599:1999 ED2

IEC 60599:1999/AMD1:2007 ED2


IEC 60599:2015 ED3
99.60 Withdrawal effective
May 25, 2022


IEC 60599:2022 ED4