Electroinsulating Materials Research Laboratory

In relation to many years of research and experience in technical diagnostics of transformers, we have developed our own, innovative research methods that in practice prove useful in expert assessment of the technical condition of devices. The tests performed in the Electroinsulating Materials Testing Laboratory are carried out in accordance with applicable standards, using recommended equipment and certified chemical reagents, which guarantees the reliability and repeatability of results.

In the Laboratory we perform:

• Oil insulation tests
  
  • gas chromatographic analysis (DGA)
  • measurement of dielectric and physicochemical parameters
  • measurement of surface tension and polarity index
  • oil cleanliness class and identification of solid contaminant particles
  • oil corrosivity tests
  • analysis of furan compound content
  • infrared spectrometric analysis (IR)
• Paper insulation tests
  
  • measurement of water content in paper
  • measurement of the average degree of polymerization DP
• Compatibility tests of construction materials with oil
• Certification tests of newly produced oils according to PN-EN 60296

Comprehensive tests of transformer oil allow us to assess the technical condition of the unit and make a decision on its further use or on the need to carry out repairs and maintenance and repair works. Oil loses its insulating properties, which is largely influenced by moisture, metal particles, load during operation. By conducting control DGA tests and physicochemical properties of the oil, we are able to determine whether it is possible to continue using the transformer, whether a decision should be made to process the liquid insulation or regenerate it. In our laboratory, we also carry out additional tests to assess the degree of aging of oil-paper insulation of transformers indirectly from oil (including surface tension, polarity index, infrared spectrometric analysis, analysis of furan compounds) and we directly test paper insulation (degree of polymerization, degree of moisture).