Megger Transformer Products

Transformer health is paramount to ensuring the stable transmission and distribution of electrical energy. Maintaining these costly assets can be difficult if you don’t have the proper tools.

The full line of Megger Transformer Testing Solutions delivers the broadest range of diagnostic testing in the industry to help extend the life of your transformer, so you can Power on.


Transformer and Substation Test System

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.

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3-Phase Ratio and Winding Resistance Analyzer

The Megger MWA300 Transformer Winding Analyzer is here to offer you a faster, more efficient testing device through combining TTR and resistance testing in a single unit

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12 kV Power Factor

(Tan Delta) Tester

DELTA4000 series is a fully automatic 12 kV insulation power factor / dissipation factor (tan delta) test set designed for condition assessment of electrical insulation in high voltage apparatus such as transformers, bushings, circuit breakers, cables, lightning arresters, and rotating machinery.

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Oil Tan Delta

Insulating Oil Tester

The Oil Tan Delta (OTD) is a laboratory instrument, which measures the Tan Delta, Resistivity and Relative Permittivity of insulating liquids.  These tests give a wider picture of the overall quality of the insulating oil, and will indicate if there is any contamination. Megger has developed features of the OTD to ensure that productivity levels within laboratories are maximized.

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Megger’s Transformer Testing Van 


Fully integrated, complete transformer testing solution customized to meet your needs

Commissioning and periodic on-site maintenance checks are crucial and often prescribed for safe and uninterrupted operation of power transformers and substations. A unique combination of routine electric tests and advanced diagnostic techniques are gathered within the dedicated “Megger Transformer Test Van” to help you reduce testing time and prevent accidents.

Special Features:

  •  Insulation Resistance
  •  DC Winding resistance / Tap Changer Test
  •  Turn ratio and vector group verification
  •  Short circuit impedance (optional)
  •  Capacitance and dissipation factor for transformer and bushings
  •  Power losses for no-load and short circuit conditions (optional)
  •  Frequency Response Analysis (optional)
  •  Moisture-in-cellulose assessment with DFR technique (optional)
  •  Withstand tests at elevated voltage up to 100 kV AC 50 Hz and 70 kV DC (optional)

Oil breakdown test (optional)

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