This item is an excellent condition used TTR20-1 Megger Transformer Turn-Ratio Test Set Calibrated to NIST Traceable Standards on April 23, 2026. Includes soft case, manual, 1 set of leads and a NIST traceable calibration certificate. All pictures are of the actual unit and accessories.
This item comes with a 180 day warranty. All functions are guaranteed to work or money will be refunded.
Item is in stock and located in Texas.
International Buyers – Please Note: Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying. For more information of clarification, please ask.
Will ship worldwide. We make our best efforts to get you the best shipping prices. Contact us for other international rates and we will be pleased to give you a quote. We accept VISA / Mastercard. Paypal is also accepted. Sales to within Canada are subject to 5% GST. Ontario sales subject to 13% HST.
TTR20-1 Megger Transformer Turn-Ratio Test Set NIST Calibrated
- The Megger TTR20-1 is a handheld transformer turns-ratio tester designed for testing single-phase and three-phase transformers phase-by-phase. It measures turns ratio, excitation current, and polarity to help identify winding or core issues in distribution, power, current, and potential transformers. The unit is lightweight, battery powered, and built for field use in substations, transformer shops, and industrial environments.
- Handheld, battery-operated transformer turns ratio tester
- Measures:
- Turns ratio
- Excitation current
- Polarity / phase displacement
- Suitable for:
- Single-phase transformers
- Three-phase transformers (phase-by-phase)
- CTs and PTs
- Tapped transformers
- Ratio measurement range:
- Up to 10,000:1
- Accuracy:
- ±0.20% (0.8 to 4,000 ratio)
- ±0.25% (4,001 to 10,000 ratio)
- Test voltages:
- 0.5 V
- 1.5 V
- 8 V
- Measurement time:
- Less than 5 seconds
- Display:
- Backlit graphical LCD
- Power:
- Six AA batteries
- Weight:
- Approx. 1.9 lb (870 g) unit only
- Approx. 2.8 lb with leads
