Transformer testing
Complete transformer test systems
TRAX - Multifunction Transformer and Substation Test System

TRAX - Multifunction Transformer and Substation Test System

OverviewTechnical DataSoftware
Brochure download

Multifunction transformer and substation test system

State-of-the-art power transformer testing

State-of-the-art power transformer testing

TRAX offers a full set of standard and advanced tests for power transformers with several unique and outstanding features:

  • • WRM at 100 A and 50 V for faster saturation of large or high inductance transformers.
  • • True dynamic resistance measurement of OLTC (Megger innovation) that accurately resolves diverter resistances and transition times.
  • • Adaptive demagnetization for the fastest and most efficient demagnetization on the market.
Best-in-class tan delta / power factor testing

Best-in-class tan delta / power factor testing

Together with TDX 120, TRAX offers the most advanced tan delta/power factor testing on the market:

  • • Tan delta / power factor testing at 12 kV and 500 mA for high capacitance tests without the use of an external inductor.
  • • Individual temperature correction (ITC - Megger innovation) for more accurate insulation properties at reference temp (20 °C) when measuring warm or cold objects
  • • Voltage dependence detecion (VDD - Megger innovation) to automatically warn if test object shows signs of power factor voltage dependence and a tip-up test should be performed
  • • Narrowband DFR testing capabilities from 1 - 500 Hz.
Circuit breaker analyzer included

Circuit breaker analyzer included

TRAX includes Megger’s market leading circuit breaker testing technology and offers, as the only multifunctional test set on the market, the following tests:

  • • Timing test (O, C, OC, CO & OCO)
  • • Station voltage
  • • Pre-insertion resistance (PIR)
  • • Coil current
  • • Breaker graphs (timing, voltage, current)
Manual control

Manual control

TRAX offers full manual control of inputs and outputs, which is a unique tool for immediate troubleshooting if standard tests fail. It is also ideal for universities and research institutes that want the best hardware but at the same time want to design their own tests.

  • • 10 generators and 4+2 measurement channels
  • • Parameter calculation tool
  • • Oscilloscope
Brochure download

Multifunction transformer and substation test system



Learn in more depth about the TRAX system

  • TRAX

    TRAX is a multi-function test system for transformer substation testing. The test system replaces numerous individual testing devices which makes testing with TRAX a time saving and cost effective alternative to conventional measurements using separate instruments.

  • TRAX Datasheet

    The TRAX datasheet is designed to summarize the features, applications, technical specifications and ordering information of the product and its accessories.

  • TDX 120

    TDX 120 is the high voltage accessory to TRAX, intended for tan delta / power factor testing up to 12 kV.


  • TCX 200

    TCX 200 is the high current accessory for TRAX boosting current output up to 2000 A.

  • TSX 303

    TSX 303 is an automatic switchbox for use during testing of power transformers. It greatly reduces connection and testing time.


  • TSX 300

    TSX 300 offers the same functionality as TSX 303 but switching is manual.


  • Line impedance

    Kit for measurement of line impedance with TRAX.


Product Documents

User guide
User Guide - TDX120
User guide
User Guide - TCX200
User guide
User Guide - TRAX
User guide
User Guide - Line Impedance Kit
User guide
User Guide - TSX300
User guide
User Guide - TSX303

Software Downloads

TRAX Software
TRAX Control Software for PC
73.1 MB | 07/10/20
TRAX Main Unit Software

TRAX Main Unit Software
381.6 MB | 15/10/20