Doble M4100 - High Voltage Apparatus Tester

Doble M4100

High Voltage Apparatus Tester


  • Power Factor and Tan-Delta testing to confirm insulation integrity and quality
  • Capacitance testing to measure physical changes that may have occurred to the apparatus
  • HV turns ratio testing to detect shorted turns or winding damage
  • Leakage reactance / short circuit impedance testing to evaluate winding deformation
  • Single phase excitation current testing to evaluate transformer magnetizing circuit
  • Capacitor bank testing to detect deteriorating or failed capacitors within a bank
  • Generates its own precise sine wave test signal
  • Self-calibrating in the field
  • A-Rent also rents complete spare M4100 lead sets alone
  • DTA8 software available upon request

  • Available to rent, lease, buy used or buy new
  • If you own this unit, A-Rent offers NIST traceable calibration services with a 3 day turnaround time

We can fulfill equipment requests up to 7 p.m. CT the day before. Fill out the form below or call us at 630.748.8900.