PDTech Dielectric Response Analyzer (DRA-3)

Offline Diagnosis of Insulation

The DRA-3 measures the charging and discharging currents of insulation (also called polarization and depolarization currents)

Hydro Generator
Turbine Generator
Works with These Assets


  • Used for off-line insulation diagnosis for generators and motors and transformers.
  • Measures the charging and discharging currents of the winding of stator or rotor insulation.
  • Allows you to connect all three phases and the ground at one time.
  • Allows the possibility to measure all three phases together to ground, each phase separately and between the phases.