Transformer testers
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.
Best-in-class tan delta / power factor testing

Best-in-class tan delta / power factor testing

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Correction (ITC - Megger innovation) for accurate and automated temperature normalization to 20 °C, to avoid use of outdated correction tables.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. Specially designed for high EMI environments and low capacitance specimens (bushings, instrument transformers).
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

▪ Replaces need for multiple test sets
▪ Saves time by eliminating need for multiple instruments learning
▪ User-friendly interface reduces training and testing time
▪ Portable and compact system components for easy shipping
▪ State of the art measurement methods for advanced diagnostic testing

TRAX application areas can be greatly expanded by the use of auxiliary instruments:

▪ TDX120 – Accessory for tan delta /power factor up to 12 KV
▪ TCX200 – High current accessory for primary injection testing up to 2000 A
▪ TSX303 – Automated 3-phase switchbox for faster testing of power transformers
▪ TSX300 – Manual switchbox for easier connection during power transformer testing
▪ Line impedance kit – Kit for testing line impedance with TRAX

TRAX is not just another multi-functional test instrument, but rather many intelligent instruments built into one box. The software includes a number of apps, making it fast and easy to perform a large range of different tests. The hardware offers unmatched flexibility and the range of cables and accessories adds even more flexibility, making the TRAX an efficient and time saving system for any user in the world.

TRAX is a multi-functional solution for transformer testing. It also adds several common substation testing functionalities, and ultimately replaces numerous individual testing devices. Compared to conventional single-functionality instruments, TRAX saves time and is more cost effective.

TRAX applications range from power transformers, where it offers several unique and outstanding features, to instrument transformers, circuit breakers, and many other substation components.

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

Software Downloads

Trax Control Software
Trax Control Software
73.2 MB | 10/12/21
TRAX Main Unit Software

TRAX Main Unit Software
388.9 MB | 31/08/21