Transformer Oil Testing
Assessing the internal condition of oil-filled transformers to improve reliability and assist in determining appropriate asset management decisions.
Transformer oil holds critical information on the condition of the transformer from thermal and electrical faults to contamination and degradation of the oil which can reduce the life of a transformer. Transformer oil analysis provides a highly accurate indication of the internal condition of a transformer. Diagnostics tests, including oil quality, dissolved gas analysis and furfuraldehyde levels, offer insights into abnormal electrical or thermal activity and other
effects of transformer aging, including the condition of paper insulation – the primary indicator of potential transformer failure. Information on the condition of the transformer and where it is in its lifecycle, allows for cost-effective and efficient maintenance planning, refurbishment and replacement.
The following are the main characteristics to consider while doing a transformer oil test:
- Dielectric Breakdown Voltage
- Moisture Content test
- Dielectric Dissipation Factor (TAN DELTA) Test
- Resistivity test
- Interfacial tension test
- Visual examination
- Acid number
- Flash Point test
- Pour Point test
- Viscosity Test
- Density test
- Dissolved Gas Analysis test
