Turns ratio testers compared
Technical data of the 16 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.
| TRT03A | TRT03B | TRT03C | TRT100 | TRT250 | TRT33A | TRT33B | TRT33C | TRT400 | TRT500 | TRT63A | TRT63B | TRT63C | TWR-H: turns ratio and winding resistance | TWR250B turns ratio and winding resistance analyzer | TRT-H No product page on this site | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Test voltage | Single-phase; steps 8, 40 and 100 V AC | Single-phase; steps 10, 40 and 100 V AC | Single-phase; steps 8, 40 and 80 V AC | Single-phase and true three-phase, 1 – 170 V AC; steps 1, 8, 10, 40, 80, 100, 170 V | Single-phase and true three-phase, 1 – 250 V AC; steps 1, 8, 10, 40, 80, 100, 170, 250 V | Single-phase and true three-phase; steps 1, 8, 40 and 100 V AC | Single-phase and true three-phase; steps 1, 10, 40 and 100 V AC | Single-phase and true three-phase; steps 1, 8, 40 and 80 V AC | Single-phase and true three-phase, 1 – 430 V AC; steps 1, 8, 10, 40, 80, 100, 170, 250, 430 V | Single-phase and true three-phase, 1 – 500 V AC; steps 1, 8, 10, 40, 80, 100, 170, 250, 430, 500 V Up to 5000 V AC with the CVT20 auxiliary transformer | Single-phase and true three-phase; steps 1, 8, 40, 100 and 250 V AC | Single-phase and true three-phase; steps 1, 10, 40, 100 and 250 V AC | Single-phase and true three-phase; steps 1, 8, 40, 80 and 250 V AC | Not stated on the product page | 1 – 250 V AC (three-phase up to 200 V); 5 mA – 25 A DC (10 A on battery), up to 50 V | 40, 10 and 1 V AC, single-phase |
| Turns ratio | 0.8 – 50,000 (5 digits); accuracy from ±0.05 % | 0.8 – 50,000 (5 digits); accuracy from ±0.05 % | 0.8 – 50,000 (5 digits); accuracy from ±0.05 % | 0.8 – 50,000 (5 digits); accuracy from ±0.05 % | 0.8 – 50,000 (5 digits); accuracy from ±0.03 % | 0.8 – 50,000 (5 digits); accuracy from ±0.05 % | 0.8 – 50,000 (5 digits); accuracy from ±0.05 % | 0.8 – 50,000 (5 digits); accuracy from ±0.05 % | 0.8 – 50,000 (5 digits); accuracy from ±0.03 % | 0.8 – 50,000 (5 digits); accuracy from ±0.03 % | 0.8 – 50,000 (5 digits); accuracy from ±0.03 % | 0.8 – 50,000 (5 digits); accuracy from ±0.03 % | 0.8 – 50,000 (5 digits); accuracy 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 | Phase 0 – 360° (0.01°; ±0.05°) Excitation current 0 – 2 A; ±(0.25 % rdg + 0.5 mA) | Phase 0 – 360° (0.01°; ±0.05°) Excitation current 0 – 2 A; ±(0.25 % rdg + 0.5 mA) | Phase 0 – 360° (0.01°; ±0.05°) Excitation current 0 – 2 A; ±(0.25 % rdg + 0.5 mA) | Phase 0 – 360° (0.01°; ±0.05°) Excitation current 0 – 2 A; ±(0.25 % rdg + 0.5 mA) | Phase 0 – 360° (0.01°; ±0.05°) Excitation current 0 – 2 A; ±(0.25 % rdg + 0.5 mA) | Phase 0 – 360° (0.01°; ±0.05°) Excitation current 0 – 2 A; ±(0.25 % rdg + 0.5 mA) | Phase 0 – 360° (0.01°; ±0.05°) Excitation current 0 – 2 A; ±(0.25 % rdg + 0.5 mA) | Phase 0 – 360° (0.01°; ±0.05°) Excitation current 0 – 2 A; ±(0.25 % rdg + 0.5 mA) | Phase 0 – 360° (0.01°; ±0.05°) Excitation current 0 – 2 A; ±(0.25 % rdg + 0.5 mA) | Phase 0 – 360° (0.01°; ±0.05°) Excitation current 0 – 2 A; ±(0.25 % rdg + 0.5 mA) | Phase 0 – 360° (0.01°; ±0.05°) Excitation current 0 – 2 A; ±(0.25 % rdg + 0.5 mA) | Phase 0 – 360° (0.01°; ±0.05°) Excitation current 0 – 2 A; ±(0.25 % rdg + 0.5 mA) | Phase 0 – 360° (0.01°; ±0.05°) Excitation current 0 – 2 A; ±(0.25 % rdg + 0.5 mA) | Not stated on the product page | ±0.03 % typical, ±0.075 % guaranteed (250 V, ratio 0.8 – 999) | Phase: 0 – 360°; resolution 0.01°; ±0.06° Excitation current: 0 – 1 A; resolution 0.1 mA; ±(1 % rdg + 0.5 mA) |
| Models | Variant A: test voltage steps 8/40/100 V | Variant B: test voltage steps 10/40/100 V | Variant C: test voltage steps 8/40/80 V | 170 V AC model with 7" screen of the TRT Advanced series | 250 V AC model with 7" screen of the TRT Advanced series | Variant A: test voltage steps 1/8/40/100 V | Variant B: test voltage steps 1/10/40/100 V | Variant C: test voltage steps 1/8/40/80 V | 430 V AC model with 7" screen of the TRT Advanced series | 500 V AC model with 10.1" screen of the TRT Advanced series | Variant A: test voltage steps 1/8/40/100/250 V | Variant B: test voltage steps 1/10/40/100/250 V | Variant C: test voltage steps 1/8/40/80/250 V | Not stated on the product page | Not stated on the product page | TRT-H (handheld, battery-powered) |
| Tests | Turns ratio, phase shift and excitation current; automatic vector group detection and magnetic balance; CTs and special transformers; remote tap changer control | Turns ratio, phase shift and excitation current; automatic vector group detection and magnetic balance; CTs and special transformers; remote tap changer control | Turns ratio, phase shift and excitation current; automatic vector group detection and magnetic balance; CTs and special transformers; remote tap changer control | Turns ratio, phase shift and excitation current; automatic vector group detection and magnetic balance; CTs and special transformers; remote tap changer control; templates and automatic mode on the touch screen | Turns ratio, phase shift and excitation current; automatic vector group detection and magnetic balance; CTs and special transformers; remote tap changer control; templates and automatic mode on the touch screen | Turns ratio, phase shift and excitation current; automatic vector group detection and magnetic balance; CTs and special transformers; remote tap changer control | Turns ratio, phase shift and excitation current; automatic vector group detection and magnetic balance; CTs and special transformers; remote tap changer control | Turns ratio, phase shift and excitation current; automatic vector group detection and magnetic balance; CTs and special transformers; remote tap changer control | Turns ratio, phase shift and excitation current; automatic vector group detection and magnetic balance; CTs and special transformers; remote tap changer control; templates and automatic mode on the touch screen | Turns ratio, phase shift and excitation current; automatic vector group detection and magnetic balance; CTs and special transformers; remote tap changer control; templates and automatic mode on the touch screen; capacitive voltage transformers with the CVT20 (up to 5000 V AC) | Turns ratio, phase shift and excitation current; automatic vector group detection and magnetic balance; CTs and special transformers; remote tap changer control | Turns ratio, phase shift and excitation current; automatic vector group detection and magnetic balance; CTs and special transformers; remote tap changer control | Turns ratio, phase shift and excitation current; automatic vector group detection and magnetic balance; CTs and special transformers; remote tap changer control | 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 | Not stated on the product page | Not stated on the product page | Not stated on the product page | Not stated on the product page | Not stated on the product page | Not stated on the product page | Not stated on the product page | Not stated on the product page | Not stated on the product page | 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) | Three-phase simultaneous, phase by phase or both | Not stated in the documentation |
| Memory and communications | Backlit LCD 20 × 4; 10,000 results; USB, optional RS-232; optional 58 mm thermal printer | Backlit LCD 20 × 4; 10,000 results; USB, optional RS-232; optional 58 mm thermal printer | Backlit LCD 20 × 4; 10,000 results; USB, optional RS-232; optional 58 mm thermal printer | 7" touch screen; 32 GB SD card; USB and Ethernet; optional 58 mm thermal printer | 7" touch screen; 32 GB SD card; USB and Ethernet; optional 58 mm thermal printer | Backlit LCD 20 × 4; 10,000 results; USB, optional RS-232; optional 58 mm thermal printer | Backlit LCD 20 × 4; 10,000 results; USB, optional RS-232; optional 58 mm thermal printer | Backlit LCD 20 × 4; 10,000 results; USB, optional RS-232; optional 58 mm thermal printer | 7" touch screen; 32 GB SD card; USB and Ethernet; optional 58 mm thermal printer | 10.1" touch screen; 32 GB SD card; USB and Ethernet; optional 112 mm thermal printer | Backlit LCD 20 × 4; 10,000 results; USB, optional RS-232; optional 58 mm thermal printer | Backlit LCD 20 × 4; 10,000 results; USB, optional RS-232; optional 58 mm thermal printer | Backlit LCD 20 × 4; 10,000 results; USB, optional RS-232; optional 58 mm thermal printer | 100 records; Bluetooth to PC | 0 – 360° (0.01°); 0 – 2 A | 4.8" LCD; 100 transformer records (15 results each); Bluetooth to PC |
| Power supply | 90 – 264 V AC, 50/60 Hz; 200 VA | 90 – 264 V AC, 50/60 Hz; 200 VA | 90 – 264 V AC, 50/60 Hz; 200 VA | 90 – 264 V AC, 50/60 Hz; 250 VA | 90 – 264 V AC, 50/60 Hz; 250 VA | 90 – 264 V AC, 50/60 Hz; 200 VA | 90 – 264 V AC, 50/60 Hz; 200 VA | 90 – 264 V AC, 50/60 Hz; 200 VA | 90 – 264 V AC, 50/60 Hz; 250 VA | 90 – 264 V AC, 50/60 Hz; 250 VA | 90 – 264 V AC, 50/60 Hz; 250 VA | 90 – 264 V AC, 50/60 Hz; 250 VA | 90 – 264 V AC, 50/60 Hz; 250 VA | 14.8 V Li-Ion, replaceable; up to 100 tests | 1 ms resolution | Li-ion 14.8 V, 2.9 Ah, user-replaceable; up to 100 tests per charge; adapter 90 – 264 V AC |
| Dimensions and weight | 478 × 194 × 390 mm; 8 kg | 478 × 194 × 390 mm; 8 kg | 478 × 194 × 390 mm; 8 kg | 478 × 194 × 390 mm; 9 kg | 478 × 194 × 390 mm; 9 kg | 478 × 194 × 390 mm; 8 kg | 478 × 194 × 390 mm; 8 kg | 478 × 194 × 390 mm; 8 kg | 478 × 194 × 390 mm; 9 kg | 505 × 257 × 409 mm; 10.5 kg | 478 × 194 × 390 mm; 9 kg | 478 × 194 × 390 mm; 9 kg | 478 × 194 × 390 mm; 9 kg | 170 × 310 × 58 mm; 1.4 kg | -50 to +180 °C; Pt100 class B | 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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