• Power Factor/Tan Delta testing to confirm insulation integrity and quality
  • Capacitance testing to measure physical changes that may have occured to the apparatus
  • 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 the transformer magnetizing circuit
  • Capacitor bank testing to detect deteriorating or failed capacitors within a bank
  • Easy and accurate testing with Doble Test Assistant (DTA) software
  • Safety is our priority with safety switches, power strobes and ground earth relay interlocks
  • Eliminates the effect of varying electrostatic interference with patented Line Frequency Modulation, which makes measurements at a frequency above and below the system frequency
  • Reliability & Accuracy – generates its own clean test signal using an internal waveform generator for reliable results and stable readings
  • Software firmware system senses abnormal current, temperature and voltage operation even before a user would notice
  • Instantly analyze your test results, providing clear recommendations and explanations with FRANK™, the First Response Analytics Knowledgebase

software-dta@2xDoble Test Assistant (DTA) Software

  • Collect, analyze and manage test results
  • Easy-to-use test plans for two dozen types of HV test apparatus
  • Doble QuickHelp pictures for lead connection and test setup guidance
  • Manages data by establishing library of every result you collect with DTA
  • Available in Basic and Professional versions

Life of a Transformer™ Seminar

Life of a Transformer Seminar


DTA Software
Insulation Analysis Accessories

Doble Engineering Company

Doble Engineering Company