The Testing Station performs tests and measurements of transformers in the following areas

  • Measurement of magnetic current,
  • Measurement of leakage reactance,
  • Measurement of winding resistance,
  • Measurement of the transmissions,
  • Checking the connection group,
  • Measurement of insulation resistance,
  • Measurement of no-load losses and current,
  • Measurement of load losses and short-circuit voltage,
  • Zero sequence impedance test,
  • Induced voltage test,
  • Applied voltage test,
  • Impulse voltage test,
  • Acoustic measurements of partial discharge,
  • Electrical measurements of partial discharge,
  • Measurements of sound pressure level
  • Testing mechanical integrity of windings using SFRA,
  • Testing moisture content of solid insulation using FDS,
  • Measurement of dielectric loss factor tg D and capacity of the windings,
  • Testing on-load tap changer (measurement of the connector asynchronicity opening times, measurement of tap selector cage continuity),
  • Infrared measurements.

The Oil Laboratory conducts tests of electrical insulating oils in the following areas

  • Water content using K. Fischer method,
  • Breakdown voltage
  • Dielectric loss factor tg D at different temperature
  • Resistivity at different temperature
  • Flash point
  • Acid number
  • Density at 20 Celsius
  • Kinematic viscosity
  • Content of impurities
  • Chromatographic analysis of gases dissolved in oil (DGA)

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