Turns ratio testers compared
Technical data of the 5 units of this type offered by Amperis, row by row. Tick «Compare» on two or three to see them side by side, copy the link or print the comparison.
| TRT Advanced Series: turns ratio meter | TRT Standard Series: turns ratio meter | TWR-H: turns ratio and winding resistance | TWR250B turns ratio and winding resistance analyzer | TRT-H No product page on this site | |
|---|---|---|---|---|---|
| Test voltage | Test voltage source: Single-phase and true three-phase Maximum test voltage: 500/430/250/170 V AC (TRT500/400/250/100) | Test voltage source: Single-phase (TRT03); single-phase and true three-phase (TRT33, TRT63) Test voltage range: 8 – 100 V AC (TRT03); 1 – 100 V AC (TRT33); 1 – 250 V AC (TRT63) | Not stated on the product page | 1 – 250 V AC; 5 mA – 25 A DC, up to 50 V | 40, 10 and 1 V AC, single-phase |
| Turns ratio | 0.8 – 50,000; from ±0.03% | 0.8 – 50,000; from ±0.03% | 0.8 – 20 000 (at 40/10 V AC); accuracy from ±0.1% | 0.8 – 50,000; 5-digit resolution | 0.8 – 20 000 (at 40/10 V AC); 0.8 – 4000 (at 1 V AC); 5 digits; from ±0.1 % |
| Phase and excitation current | Not stated on the product page | 0 – 2 A | Not stated on the product page | 0 – 360° (0.01°); 0 – 2 A | Phase: 0 – 360°; resolution 0.01°; ±0.06° Excitation current: 0 – 1 A; resolution 0.1 mA; ±(1 % rdg + 0.5 mA) |
| Models | TRT500, TRT400, TRT250 and TRT100 | TRT03, TRT33 and TRT63 (A/B/C mains variants) | Not stated on the product page | Not stated on the product page | TRT-H (handheld, battery-powered) |
| Tests | Not stated on the product page | Not stated on the product page | Ratio, winding resistance and demagnetization | Not stated on the product page | Turns ratio, excitation current and phase angle; single- and three-phase distribution transformers, CTs and VTs; polarity |
| Winding resistance | Not stated on the product page | Not stated on the product page | DC sources: Up to 2 A (HV side) and up to 10 A (LV side) Winding resistance: 1 µΩ – 3 kΩ; ±(0.5% rdg + 0.5% FS) | 0.1 µΩ – 100 kΩ | Not stated in the documentation |
| Memory and communications | Display: Touch screen, 10.1 in (TRT500) or 7 in (rest) Internal memory: 32 GB SD card Interface: USB and Ethernet | Internal memory: Up to 10,000 test records Interface: USB (standard); RS-232 (optional) | 100 records; Bluetooth to PC | 10.1" touch screen; 32 GB SD; Ethernet and USB | 4.8" LCD; 100 transformer records (15 results each); Bluetooth to PC |
| Power supply | Not stated on the product page | Not stated on the product page | 14.8 V Li-Ion, replaceable; up to 100 tests | 90 – 264 V AC, 50/60 Hz; 14.4 V, 6.8 Ah Li-ion battery | Li-ion 14.8 V, 2.9 Ah, user-replaceable; up to 100 tests per charge; adapter 90 – 264 V AC |
| Dimensions and weight | 505×257×409 mm, 10.5 kg (TRT500); 478×194×390 mm, 9 kg (rest) | 478 × 194 × 390 mm; 8 kg (TRT03, TRT33) or 9 kg (TRT63) | 170 × 310 × 58 mm; 1.4 kg | 503 × 193 × 406 mm; 11.0 kg | 170 × 310 × 58 mm; 1.4 kg |
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Data from the specifications table of each product page and, for units without a product page, from their technical documentation. Missing data is flagged.
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