This item is a good condition used Olman Instruments TR800 Transformer Ratiometer 3-Phase TTR. Calibrated to NIST Traceable Standards on September 3, 2025. Comes with rigid shipping case, x2 sets of test leads with clamps X and H), lead extender cables, standard power cable, calibration certificate, and 180 day warranty. All pictures are of the actual unit.
This item comes with a 6 Month (180 day) warranty. Every pre-owned unit we offer goes through meticulous inspection and NIST calibration to guarantee its reliability and durability.
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Olman Instruments TR800 Transformer Ratiometer 3-Phase TTR NIST Calibrated
The Olman TR-800 Transformer Ratiometer is a field-ready, accurate, and durable instrument engineered for transformer diagnostics. With its broad ratio measurement capability, built-in excitation current and phase deviation measurements, three-phase switching, and robust protective design, it's well-suited for maintenance, troubleshooting, and validation of transformer performance.
- Ratio Range 1 : 1 to 2021 : 1
- Built-in Current Meter Yes – for excitation current logging
- Phase Deviation Measurement Yes – helps detect winding faults
- Three-Phase Switching Yes – for efficient and safe testing
- Test Voltages 120 V 1 A or 12 V 1 A (isolated, line dependent)
- Ratio Accuracy ±0.1% of ratio
- Deviation Dial Resolution 0.02%, Accuracy ±2%
- Internal Protection Yes – against over-voltage and shorted output
- Portable with rugged transport case