Transformer Oil

Transformer oil also known as “insulating oil” is an oil that is stable at high temperatures and has excellent electrical insulating properties. It is used in oil filled transformers, some high voltage capacitors, switches and circuit breakers. Unfortunately, due to certain conditions eg. climate or site conditions, the oil condition changes causing the physical and chemical properties of the oil to degrade. This degradation can be determined by routine oil analysis. Transformer analysis can also detect other possible problems within the transformer including contact arcing, age of the insulation paper and various other faults.

Transformer oil analysis and proper maintenance is becoming a norm in South Africa. This allows for a longer predicated lifespan of your asset and allows for more strategic planning for future expenditures.

Oilwatch Transformer Services will offer a full range of tests to determine the total overall condition of your transformer. These tests include:

  • Moisture content
  • Total acid number
  • Dielectric strength
  • Dissolved gas analysis
  • Polychlorinated biphenyls (PCB’s)
  • Furanic analysis
  • Corrosive sulphur
  • Elemental analysis
  • Flashpoint
  • Density @20°C
  • Viscosity @40°C