Power Transformers and Oil

Following Tests are carried out :

  • Winding
    1.  Insulation Resistance and Polarization Index Measurement.
    2.  Capacitance and Tan delta Measurement.
    3.  SFRA (Sweep Frequency Response Analysis) Test.
    4.  Magnetic Balance Test.
    5.  Turns Ratio Measurement for all Taps.
    6.  Excitation Current Measurement.
    7.  % Impedance Measurement.
    8.  DC Winding Resistance Measurement at all Taps.
    9.  Vector Group Test.
  • Bushing
    1.  Insulation Resistance Measurement.
    2.  Capacitance & Tan delta Measurement for.

    a)  C1 Insulation and
    b)  C2 Insulation.

  • Insulating Oil
    1.  Oil Dielectric Tests
    2.  Dissolved Gas Analysis Test
    3.  Furan Analysis
  • Transformer Online PD Measurement