Description
Megger 670025 Factor Test Set Repair
The Megger 670025 Factor Test Set 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.
The Megger 670025 Factor Test Set is repaired at June Company by technicians who work on this class of instrument daily, 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 670025 Factor Test Set problems we fix
- 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.
- 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.
FAQs
Are the measurements verified after repair? Yes, against reference standards, with the measured results documented and returned with the instrument.
Ratio is wrong on some taps but right on others. Instrument or transformer? Worth testing the set first. Tap-dependent errors are exactly what a single-point check misses, and we verify across the full range.
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.







