Megger TRAX Transformer and Substation Test System

Megger TRAX Multifunction Transformer and Substation Test System

The Megger TRAX is a multifunction transformer and substation test system that combines a long list of substation test capabilities, transformer turns ratio, winding resistance, dynamic resistance measurements, power factor, insulation, and more, into a single instrument platform. Powerpoint Engineering supplies the Megger TRAX (including the TRAX 280 and the wider TRAX family) to Irish utilities, transmission and distribution operators, transformer service companies, and large industrial maintenance teams who need a single test set that covers a substantial fraction of substation acceptance and routine testing.

Where the traditional approach is to roll a different test set into the substation for each measurement, the TRAX is the platform that delivers many of those tests through one set of leads, one user interface, and one test report. For asset owners running many transformer tests per year, that consolidation is the engineering and economic case for TRAX.

What the Megger TRAX measures

• Transformer turns ratio (TTR): confirm ratio against the nameplate at every tap position.
• Winding resistance: high-current DC measurement on power transformers, supporting commissioning and routine testing.
• Dynamic resistance measurements: tap-changer condition assessment with continuous resistance capture during a tap operation.
• Power factor / dissipation factor: insulation condition assessment on bushings, windings, and CTs.
• Insulation resistance: integrated IR test capability through the same platform.
• Up to 100 A true DC test current: stable, true DC current sufficient for large power transformer winding resistance.
• Switchbox accessory: automatic test sequence across all phases and tap positions, removing manual lead-changing for each measurement.

Pair the TRAX with the appropriate accessory set, and the test bench for a substation transformer outage collapses from several test sets to one.

Why a multifunction substation test system matters

Substation outages are the most expensive part of transformer maintenance. The longer the outage, the higher the cost in terms of customer minutes lost, generation displacement, or process downtime. A multifunction test system reduces outage time by removing the lead-change and instrument-change time that traditionally dominates a transformer test plan. The TRAX is built around that operational case, with test sequences that automate the routine work and free the test engineer to focus on the results that actually need engineering judgement.

Specifications: what to confirm before you order

Target users and applications

• Utilities and transmission operators running substation transformer test campaigns
• DNOs running periodic transformer testing on the distribution network
• Transformer service companies testing repaired and refurbished units before redelivery
• Large industrial maintenance teams in pharmaceutical, semiconductor, and data-centre estates
• Renewable site operators testing wind, solar, and BESS step-up transformers and other substation assets

Typical applications include factory acceptance testing of new power transformers, on-site commissioning testing, periodic maintenance testing on the substation outage cycle, post-fault diagnostic testing after a transformer has been called into question, and condition-based maintenance trending across the asset's service life.

As authorised Megger distributor in Ireland, Powerpoint Engineering supplies the Megger TRAX, the TRAX 280, and the wider TRAX accessory range, alongside in-house calibration and repair and operator training in transformer testing techniques.

FAQs

Does the TRAX replace dedicated TTR and winding resistance test sets?

For most routine and acceptance testing, yes. The TRAX delivers TTR, winding resistance, PF, and IR through one platform. For very specialised tests or extreme operating points outside the TRAX specification, dedicated test sets may still be the right tool, but for the bulk of substation transformer testing, the TRAX is the consolidated platform.

How much DC test current does the TRAX deliver?

The TRAX delivers up to 100 A true DC test current, which is sufficient for the winding resistance measurements on the typical range of distribution and utility power transformers. For very large transmission transformers, confirm the current requirement against the TRAX specification before ordering.

Does the Megger TRAX need calibration?

Yes. As a precision substation test system used for acceptance and reporting decisions, the TRAX should be recalibrated periodically. Powerpoint Engineering's calibration laboratory recalibrates Megger TRAX systems and supplies a traceable certificate.

To match the right Megger TRAX configuration to your transformer fleet, test workflow, and outage planning, request a quote or speak to our team for compatibility advice.