OIL SAMPLING

Transformer Oil Sampling & Testing

Maintenance of substation transformers is often neglected, with potentially severe consequences. Transformers degrade over time, and failure to collect oil samples and conduct testing can allow problems to go undetected, causing increased operating costs and downtime. With proper oil maintenance, that degradation can be delayed significantly, resulting in increased transformer life. These vital tests can uncover several potential problems within a transformer, including evidence of soluble contaminants, dielectric contaminants, and acid materials.

PSS’ comprehensive, 19-point testing process will test your oil sample for any of the following:

  • Acid Content
  • IFT
  • Dielectric 877
  • Dielectric 1816
  • Color
  • Moisture
  • Visual
  • Sediment
  • Power Factor – 25 C
  • Power Factor – 100 C
  • Inhibitor (% by Wgt.)
  • PCB
  • Specific Gravity
  • Viscosity
  • Furan Analysis (PPB)
  • (DGA) Dissolved Gas Analysis
  • ICP Metals-in-Oil
  • Particle Count
  • Other

Oil sampling and testing is an essential component of a comprehensive transformer maintenance program. The PSS Oil Testing Guide is a must for simplifying and explaining the most common testing methods and types, and interpreting the results.  

Transformers degrade over time, and failure to collect oil samples and conduct testing can allow problems to go undetected, causing increased operating costs and downtime.