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IEC 61181

Mineral oil-filled electrical equipment – Application of dissolved gas analysis (DGA) to factory tests on electrical equipment

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Organization: IEC
Publication Date: 1 February 2007
Status: inactive
Page Count: 32
ICS Code (Transformers. Reactors): 29.180
ICS Code (Insulating oils): 29.040.10
scope:

Scope and Object

This International Standard specifies oil-sampling procedures, analysis requirements and procedures and recommends sensitivity and precision criteria for the application of dissolved gas analysis (DGA) to factory testing of power transformers, reactors and instrument transformers when DGA testing has been specified.

DGA is a technique for detecting certain types of faults in oil-filled electrical equipment which may not be detected by conventional methods.

The most effective and useful application of DGA techniques to factory testing is during the performance of long-term tests, typically temperature-rise and overloading tests on power transformers and reactors, also chopped lightning-impulse tests on instrument transformers.

DGA may also be valuable for over-excitation tests run over an extended period of time.

Experience with DGA results, before and after short-time dielectric tests, indicates that DGA is normally less sensitive and accurate than electrical methods for detecting dielectric failures. However, DGA may sometimes be a valuable source of relevant information on abnormal equipment behaviour.

Document History

March 1, 2012
Mineral oil-filled electrical equipment – Application of dissolved gas analysis (DGA) to factory tests on electrical equipment
This International Standard specifies oil-sampling procedures, analysis requirements and procedures, and recommends sensitivity, repeatability and accuracy criteria for the application of dissolved...
February 1, 2012
AMENDMENT 1 Mineral oil-filled electrical equipment – Application of dissolved gas analysis (DGA) to factory tests on electrical equipment
Scope and Object This International Standard specifies oil-sampling procedures, analysis requirements and procedures and recommends sensitivity and precision criteria for the application of dissolved...
IEC 61181
February 1, 2007
Mineral oil-filled electrical equipment – Application of dissolved gas analysis (DGA) to factory tests on electrical equipment
Scope and Object This International Standard specifies oil-sampling procedures, analysis requirements and procedures and recommends sensitivity and precision criteria for the application of dissolved...
May 1, 1993
Impregnated Insulating Materials - Application of Dissolved Gas Analysis (DGA) to Factory Tests on Electrical Equipment
Scope and Object This International Standard specifies oil-sampling procedures, analysis requirements and procedures and recommends sensitivity and precision criteria for the application of dissolved...

References

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