Transformer Oil Testing
It is well known that regular oil analysis is useful in monitoring the condition of transformer oils which is used to insulate transformers and other electrical distribution equipments. The analysis of insulating oils not only provides information about the oil, but also enables the detection of other possible problems, including contact arcing, aging insulating paper and other latent faults.
Why Oil Testing for Transformers is Important?
It is important to understand that transformer’s fluid not only acts as a heat transfer medium but is also part of the transformer’s insulation system. It helps to maintain the internal temperature of the transformer and is important for the safe operation. It is therefore very important to periodically perform test on the oil to determine if the insulating oil is capable of fulfilling its duties as an insolent.
TRANSFORMER OIL TESTING PARAMETERS:
- Kinematic Viscosity at 40°C
- Kinematic Viscosity at 100°C
- Viscosity Index
- Dynamic Viscosity
- Flash Point (COC)
- Fire Point (COC)
- Density AT 150°C
- Relative Density OR Specific Gravity AT 15.60°C
- API Gravity
- CLOUD POINT
- Pour Point
- Copper Strips Corrosion Test
- Ramsbottom Carbon Residue
- Ash Content
- Water & Sediment -Centrifuge Method
- Sediment By Extraction Method
- Water Content – Distillation Method
- Water Content – Karl Fisher Method
- Dielectric Breakdown voltage test
- Precipitation Number
- Acid Number
- Pentane Insoluble
- Toluene Insoluble
- Appearance