Megger IDAX 300 and 350 Insulation Diagnostic Analysers


  • State-of-the-art measurement of moisture content, tanδ and oil conductivity using DFR (Dielectric Frequency Response) 
  • Easy-to-use: Software with automated measurement flow and analysis of test results 
  • “Traffic light” interpretation of test results 
  • Dedicated test procedures for power transformers, bushings and current transformers 
  • Automated individual temperature correction (ITC) for accurate comparison with reference data/tests 
  • Reliable measurements even in high-interference environments 
  • Interfaces to high voltage amplifiers 
  • Versions with or without on-board computer 

The Megger IDAX is an insulation diagnostic instrument based on DFR (Dielectric Frequency Response), also known as FDS (Frequency Domain Spectroscopy). DFR technology is an established test procedure in laboratories that has been adapted for field use in the IDAX range of instruments. 

The IDAX is available in multiple versions: 

  • IDAX 300 – A compact and light 3-channel input (red, blue and ground), 3 terminal (generator, measure and guard) and one ammeter instrument for use with an external computer that runs the IDAX diagnostic software. 
  • IDAX 300/S – Same as IDAX 300 but with two ammeters for two simultaneous measurements. 
  • IDAX 350 – Same as IDAX 300/S but housed in a rugged and waterproof case together with an onboard computer that can also be used to control other Megger instruments. 

For extended applications the IDAX interfaces seamlessly with VAX high voltage amplifiers; VAX020 for 2 kV and VAX220/230 for 20/30 kV (on request).