Description
Megger MLR10 Leakage Reactance Tester Repair
The Megger MLR10 Leakage Reactance Tester is a transformer turns ratio tester – it energises a transformer winding and measures the ratio, excitation current and phase to confirm the windings and the tap changer are intact. The measurement is a ratio, so small errors in either winding measurement compound.
June Company’s certified technicians repair the Megger MLR10 Leakage Reactance Tester for utility transformer crews, substation technicians, and transformer manufacturers. Every instrument is repaired at component level and verified against reference standards before it ships back, with the measured results documented.
Common Megger MLR10 Leakage Reactance Tester problems we fix
- Ratio readings inaccurate – verified across the full range rather than at a single tap, since ratio errors that appear only on certain taps are the ones most often missed.
- Excitation current measurement errors.
- Phase deviation readings incorrect.
- Test lead or clamp faults.
- Output drive stage failure.
- Automatic tap changer sequencing faults.
- Display, keypad or front-panel faults.
- GPIB, LAN, USB or remote-control faults – which breaks automated test sequences while the instrument still works from the front panel.
FAQs
How long does a repair take? Most are completed in 5-10 business days, with a firm quote after evaluation and before any work begins.
Are the measurements verified after repair? Yes, against reference standards, with the measured results documented and returned with the instrument.
Every repair carries a 90-day parts-and-labor warranty, with a firm quote before any work begins. Email us or submit a service request.






