IEEE C57.104 : 2008
IEEE C57.104 : 2008
INTERPRETATION OF GASES GENERATED IN OIL-IMMERSED TRANSFORMERS
Institute of Electrical & Electronics Engineers
Table of Contents
1 Overview
1.1 Scope
1.2 Limitations
2 Normative references
3 Definitions, acronyms, and abbreviations
3.1 Definitions
3.2 Acronyms and abbreviations
4 General theory
4.1 Cellulosic decomposition
4.2 Oil decomposition
4.3 Application to equipment
4.4 Establishing baseline data
4.5 Recognition of a gassing problem - Establishing operating
priorities
5 Interpretation of gas analysis
5.1 Thermal faults
5.2 Electrical faults - Low intensity discharges
5.3 Electrical faults - High intensity arcing
6 Suggested operating procedures utilizing the detection
and analysis of combustible gases
6.1 General
6.2 Determining combustible gas generating rates
6.3 Determining the gas space and dissolved gas-in-oil
equivalents
6.4 Monitoring insulation deterioration using dissolved
gas volume
6.5 Evaluation of transformer condition using individual and
TDCG concentrations
6.6 Evaluation of possible fault type by the key gas method
6.7 Evaluation of possible fault type by analysis of the
separate combustible gases generated
7 Instruments for detecting and determining the amount of
combustible gases present
7.1 Portable instruments
7.2 Fixed instruments
8 Procedures for obtaining samples of gas and oil from
the transformer for laboratory analysis
8.1 Gas samples for laboratory analysis
8.2 Gas dissolved in oil
9 Laboratory methods for analyzing the gas blanket and
the gases extracted from the oil
9.1 General
9.2 Determination of total dissolved gas
9.3 Determination of individual dissolved gases
9.4 Determination of individual gases present in the
gas blanket
Annex A (informative) Bibliography
Abstract
Describes procedures for analyzing gas from gas spaces or gas-collecting devices as well as gas dissolved in oil.
General Product Information
| Document Type | Standard |
| Status | Current |
| Publisher | Institute of Electrical & Electronics Engineers |
| Supersedes |
|
