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The TR-Mark III 250V is a three phase transformer turns ratio meter with a test voltage measurement range of up to 250V.
The TR-Mark III 250V transformer turns ratio meter offers new features and increased accuracy to make it a perfect system. A color LCD with a backlight and a touch screen increases handling and user comfort. Two USB interfaces make it easy to store measurements on external storage devices, to transfer easily to a personal computer, or download nameplate data of the transformer to test.
- Extended test voltage measurement range of up to 250V
- Automatic measurements of voltage, turns ratio, current, and phase displacement
- Easy one-time hook up to the transformer
- Automatic test voltage range
- Displays deviation from a nominal ratio
- Tap changer interface with graphic results
- Load on test object <0.05 VA
- Measures power transformers PTs and CTs
- Automatic vector group detection
- Displays % error vs. name plate value
- Enhanced heavy-duty protection circuitry
- Emergency stop push button immediately turns off output
- Internal printer
- Data storage of over 10,000 measurements
- Simple-to-operate color LCD touch screen with backlight
- Two USB interfaces
- 5-Year standard warranty
| Range | Accuracy at 100V or 40V | Accuracy at 10V | Resolution |
| 0.8 … 2,000 | ±0.06% Rdg ±1 LSD | ±0.15% Rdg ±1 LSD | 5 Digits |
| 2,001 … 4,000 | ±0.1% Rdg ±1 LSD | ±0.3% Rdg ±1 LSD | 5 Digits |
| 4,001 … 13,000 | ±0.3% Rdg ±1 LSD | not specified | 5 Digits |
| 13,001 … 16,000 | ±0.4% Rdg ±1 LSD | 5 Digits | |
| Range | Accuracy at 250V | Resolution | |
| 0.8 … 5,000 | ±0.06% Rdg ±1 LSD | 5 Digits | |
| 5,001 … 10,000 | ±0.1% Rdg ±1 LSD | 5 Digits | |
| 10,001 … 32,500 | ±0.3% Rdg ±1 LSD | 5 Digits | |
| 32,501 … 40,000 | ±0.4% Rdg ±1 LSD | 5 Digits | |
| Current | Accuracy | Resolution | |
| 0 … 1A | ±0.001A | 0.1mA | |
| Phase Angle | Accuracy | Resolution | |
| ±90 Degree | ±0.05 Degree | 0.01 Degree | |
| Turns Ratio Range | 0.8 to 40,000 | ||
| Temperature | Operating: -10ºC to 60° C (14°F to 140°F) Storage: -20°C to 70°C (-4°F to 158°F) | ||
See Instruction Manual for more Parameters. Specifications subject to improvement at any time.
- Size L: 470 mm (18.5″) W: 371 mm (14.6″) H: 190 mm (7.5″)
- Weight: 10.2 kg (22.4 lbs.)
- Input Power: 100 to 250 VAC, 50/60 Hz auto ranging. Fuse: 2A
- Test Voltage: User Selectable: 250, 100, 40, 10, and 1VAC
- Max. Test Current: 1A
- 5.7″ Panel Display Color LCD with a backlight and touch screen
- Front Panel: Sealed, anodized
- Interface: 2 USB 2.0 (1 host/1 device) and 9 Pin RS-232 serial
- Memory Storage: Internally stores more than 10,000 test results
- Temperature: Operating: –10°C to 60°C (14ºF to 140ºF), Storage: –20°C to 70°C (-4ºF to 158ºF)
See Instruction Manual for more Parameters. Specifications are subject to change without notice.
- 1002A-05015: H and X Lead Set – 5m (16ft.), 4.1cm (1.6 in.) jaw opening
- 1002A-05023: Red Extension Lead Set (2) – 10m (32 ft.)
- 1002A-07001: Power Cord – 6.09m (20 ft.)
- 1011A-05013: Ground Lead – 5m (16ft.)
- 1003A-37001: A-B USB Cable – 3m (10ft).
- 2020A-23001: RS-232 Cable – 3m (10ft.)
- 1004A-27003: External USB Drive
- 2040A-08003: Touch Screen Stylus
- 1002X-07001: Spare Fuse Set, Time Delay 2A (Qty. 5)
- 2040A-03004: Cable Bag with Shoulder Strap
- 2040X-18002: Paper Refill for Printer – 5 rolls
- 1003A-02002: Instruction Manual
- 1004X-10001: Certificate of Accuracy
- 1003N-31001: External Trigger Switch for Tap Changer Testing — 10m (32 ft.)
- 1002A-05002: Red Extension Cable – 10m (32 ft.)
- T-Rex: 3 Phase Test Voltage Option for TR-Mark III and TR-Mark III 250V
- TR-Mark III R 250V: 19″ 4U Rackmount version
- 1004N-15002: Annual Warranty Extension
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