Transformer testing and monitoring
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 is the most complete power transformer diagnostics test system. It integrates fundamental and advanced tests with unique features to ease analysis and evaluation of a transformer's overall condition in the field

  • • WRM at 100A and 50V compliance voltage for faster saturation of large or high inductance transformers.    
  • •  True dynamic resistance measurement of OLTC (Megger innovation) to determine the real magnitude of transition resistances and transition times.
  • • Adaptive demagnetization for the fastest and most efficient demagnetization on the market.
Leading tan delta / power factor testing technology

Leading tan delta / power factor testing technology

With the TDX120 add-on, the TRAX becomes are the most advanced tan delta /power factor testing instrument on the market. Its unique features allow better assessment of the insulation system.

  • • Tan delta / power factor testing at 12 kV and 500 mA for successful testing of high capacitance objects without the use of an external inductor.
  • • Individual Temperature Correction (ITC - Megger innovation) for accurate and automated temperature normalization to 20 °C, to avoid use of outdated correction tables. True correction based on dielectric response analysis.
  • • Voltage Dependence Detecion (VDD - Megger innovation). Automatic detection of voltage dependence and alert to run a tip-up test. This is of particular value to oil-paper insulation systems, for which a stepped voltage test is not normally performed.
  • • Narrowband DFR testing capabilities from 1 - 500 Hz.
  • • Megger state of the art Individual Temperature Correction algorithm and 1 Hz power factor/dissipation factor/tan delta assessment
Circuit breaker analyzer included

Circuit breaker analyzer included

TRAX includes Megger's market leading circuit breaker testing technology and is the only multifunctional test set on the market that offers the following tests:

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

Manual control

TRAX offers full manual control of inputs and outputs  - a unique tool for immediate troubleshooting. Routine procedures can be reproduced or modified using the Manual Control features to vary voltage, current and/or frequency. TRAX is a portable metrology laboratory ideal for advanced users, research institutions and root cause analysis specialists. Manual Control gives you access to control and operate:

  • • 10 generators (AC & DC; voltage and current) 
  • •  6 measurement channels (AC & DC; voltage and current)
  • • Electrical formulae calculator 
  • • Real-time Oscilloscope
Brochure download

Multifunction transformer and substation test system

TRAX incluye un total de 10 generadores, cada uno adaptado a los requisitos de la prueba específica en la que se utiliza. Combinado con la más amplia gama de entradas en la industria, siempre será capaz de hacer su medición al más alto nivel. La tensión estándar y la salida de corriente son 800 A y 2200 V (TRAX 280), pero se pueden aumentar aún más utilizando los instrumentos auxiliares TDX 120 (tensión a 12 kV) o TCX 200 (corriente a 2000 A). Las mediciones de CC se pueden realizar con 100 A auténtica CC, no solo CA rectificada

TRAX es un concepto único en su clase de pruebas multifuncionales para transformadores y equipamiento de subestaciones. Este único concepto permite realizar múltiples mediciones en diversas aplicaciones a través de un mismo sistema, de modo que con TRAX su usuario ahorra tiempo y aumenta la eficiencia comparado al uso de distintos instrumentos individuales.


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.


  • Case Study TRAX

    Reducing risk of failure on HV Instrument transformers in the transmission system. 

    – application of narrowband dielectric frequency response (NB DFR) on HV CVTs

  • TCB200

    The TCB200 TRAX Calibration box is intended to be used for laboratory calibration of the TRAX system.

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
73.3 MB | 02/01/23
TRAX Main Unit Software

TRAX Main Unit Software
389.2 MB | 02/02/23