Transformer Testing

TESTING OF SWITCHYARD EQUIPMENTS

TRANSFORMERS

Offline:

  • Insulation Resistance, Polarization Index and Dielectric Absorption Ratio Test
  • Capacitance and Tan Delta Test on Windings and Bushings.
  • Winding Resistance Test.
  • Turns Ratio and Phase Angle Test.
  • Magnetic Balance and Magnetization Current Test.
  • High Voltage Excitation Current Test.
  • Sweep Frequency Response Analysis.
  • Dielectric Spectroscopy or Recovery Voltage Measurement.
  • Floating Neutral point voltage.

Online:

  • Partial Discharge Test
  • Thermography
  • Online Water Percentage in PPM
  • Online DGA(Dissolved Gas Analysis
Dielectric Response Analysis and Moisture in Oil-Paper Dielectrics(DIRANA)Test

Dielectric Response Analysis and Moisture in Oil-Paper Dielectrics (DIRANA) Test

Sweep Frequency Response Analysis (SFRA) Test

Sweep Frequency Response Analysis (SFRA) Test

CIRCUIT BREAKERS

  • Insulation Resistance Test
  • Contact Resistance Test
  • Time Interval Test (Opening, Closing,Close-Open)
  • DCRM

CURRENT TRANSFORMERS/VOLTAGE TRANSFORMERS

  • Insulation Resistance Test
  • Capacitance and Tan Delta Test
  • Ratio Test
  • Polarity Test
  • Winding Resistance Test
testing