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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 March 2012
Status: active
Page Count: 34
ICS Code (Insulating fluids): 29.040
scope:

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

The most effective and useful application of DGA techniques to factory testing is during the performance of long-term tests, typically temperature-rise (heat run) and overloading tests on power transformers and reactors, also 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 than electrical and acoustic methods for detecting partial discharges. However, DGA will indicate when these partial discharges become harmful to the insulation and may be detected by inspection.

Document History

IEC 61181
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...
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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