Megger TRAX Transformer / Substation Test System
- A transformer and substation test system all-in-one box!
The Megger TRAX Transformer and Substation Test System is a next-generation megger transformer tester that simplifies electrical testing across substations and transformer assets. Combining multiple intelligent instruments in one compact unit, the Megger TRAX replaces numerous single-purpose devices - helping engineers measure the resistance, ratio and condition of transformer windings quickly, accurately and safely.
Discover how the Megger TRAX Transformer / Substation Test System can save time, reduce equipment needs and deliver accurate diagnostics for every transformer test. Contact our team today to arrange a demonstration or tailored quotation.
Versatile Testing in One Box
Designed for maximum flexibility, the megger trax performs transformer, circuit breaker, CT, VT and line impedance testing in one portable system. Its intuitive touch screen and app-based control make winding resistance measurement, tap-changer analysis and insulation diagnostics faster and more reliable.
- 10 independent generators for precision testing
- 100 A true DC output for accurate winding resistance test results
- Up to 2200 V AC output, expandable to 12 kV with the TDX 120
- 2000 A current testing with the TCX 200 accessory
- Built-in data export for easy reporting and asset management
Accurate Winding Resistance Testing
The megger transformer winding resistance function delivers up to 100 A DC at 50 V compliance, enabling precise measurement on both high- and low-voltage transformer windings. Dual-channel inputs allow simultaneous measurement, while automatic discharge and demagnetisation protect both operator and test object. With the TSX 303 switchbox, all taps and windings can be tested from one lead connection, saving time and enhancing safety features.
Tap-Changer and Dynamic Resistance Testing
The megger winding resistance tester includes built-in control for on-load tap-changers. It measures resistance per tap, verifies make-before-break continuity and performs dynamic resistance measurement (DRM) to assess diverter-switch performance, detecting wear or mechanical issues before failure.
Additional Transformer Applications
- Turns Ratio and Phase Deviation: Verifies correct connections and vector groups
- Excitation Current and Impedance: Identifies shorted turns or deformation in transformer windings
- Adaptive Demagnetisation: Fully automatic process tailored to each transformer
- Tan Delta and Power Factor Testing: With the TDX 120, the TRAX becomes a complete 12 kV insulation test set
- CT and VT, Ground Impedance and Circuit-Breaker Testing: Expands capability across the substation
▶ Discover the Power of the Megger TRAX:

New HV Cable for use with TRAX / DELTA series:
Quick Connect - Quality test connections improve the reliability of test results. Megger‘s new high voltage test cable addresses the challenges that are typically encountered when testing various assets to eliminate doubt from your testing conclusions:

Megger TRAX Options:
Megger TRAX 219
- Compact, cost-effective model without a built-in touchscreen
- Output: Up to 200 A AC, 100 A DC and 2200 V AC
- Ideal for controlled environments or PC operation
Megger TRAX 220
- Built-in 10.4-inch touchscreen with intuitive app interface
- Output: 200 A AC, 100 A DC and 2200 V AC
- A portable solution for efficient winding resistance measurement and transformer diagnostics
Megger TRAX 280
- High-capacity version with 800 A AC output
- Output: Expandable to 2000 A (TCX 200) and 12 kV (TDX 120)
- Best choice for utilities and manufacturers needing advanced performance
All models share the same intelligent software, high accuracy and lead set compatibility for seamless operation.
Efficiency and Safety
The megger transformer tester combines productivity with precision. Clear terminal markings, automatic discharge, emergency interlocks and a lightweight design (under 32 kg in a flight case) make field work simple and safe. Automatic data handling and PDF reporting streamline documentation and compliance.
❓ Frequently Asked Questions (FAQ)
Q1: What tests can the Megger TRAX perform?
A. It performs winding resistance measurement, turns ratio, impedance, tan delta and power factor, CT and VT testing, circuit-breaker timing and more.
Q2: Is it portable?
A. Yes. At less than 32 kg, it is one of the most portable systems available.
Q3: Does it include safety protection?
A. Yes. The megger winding resistance tester includes auto-discharge, interlocks and emergency-stop controls.
Q4: Can results be exported?
A. Yes. Reports can be saved as PDF or exported to Megger PowerDB for asset management.
Note: Be sure to check the official datasheet before buying, and the user manual before using any test equipment. Need training? Just reach out - we’re happy to help