Megger TTR™310 Three-Phase TTR Test Set
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Features & specifications
- Remote controllable
- Works in the presence of high interference/high voltage
- Capable of measuring phase-shifting transformers
- Measures wide turns ratio range (45,000:1) with 0.1% accuracy
- Displays % error vs. name plate with pass/fail limits
- Capability for automatic vector detection when testing via PowerDB
- Fully automatic operation (either stand-alone or remote-control)
| Input Power | 120V, ±10% 60Hz, ±2 Hz, 100 VA 240V, ±10% 50Hz, ±2 Hz, 100 VA |
|---|---|
| Excitation Voltage | 8, 40, or 80 V rms, automatically or manually selected |
| Excitation Current Range and Accuracy | 0 to 500 mA, 3 digit resolution, ±(2% of reading + 1 digit) |
| Phase Deviation Range and Accuracy | ±90°, 1 decimal point for the minutes display, 2 decimal points for the degree display, or for the centiradian display Accuracy: ±3 minutes (±0.05 degrees) |
| Turns Ratio Range and Accuracy | 8 Vac: ±0.1% (0.8 to 2000), ±0.25% (2001 to 4000), ±0.35% (4001 to 8000) 40 Vac: ±0.1% (0.8 to 2000), ±0.15% (2001 to 4000), ±0.3% (4001 to 10,000), ±0.35% (10,001 to 25,000) 80 Vac: ±0.1% (0.8 to 2000), ±0.15% (2001 to 4000), ±0.25% (4001 to 10,000), ±0.30% (10,001 to 45,000) Resolution: 5 digits for all ratios |
| Printer Interface | RS-232 port |
| Computer Interface | RS-232 port |
| User Interface | 5.7 in. Color Display, text on-screen view, numeric keypad |
| Internal Data Stroage | Up to 200 data sets |
| Communications/Control Software | PowerDB LITE and PowerDB (full version, optional) |
| Transformer Winding Phase Relationship | ANSI C57.12.70-1978 CEI/IEC 76-1:1993 and Publication 616:1978 AS-2374, Part 4-1982 (Australian Standard) |
| Safety/EMC/Vibration | Safety: IEC-1010-1 CE: IEC 61326-1 Vibration ISTA Guidelines (packaged), IEC61010 (unpackaged) |
| Temperature Range | Operating: 23° F to 122° F (-5° C to 50° C) Storage: -22° F to 140° F (-30° C to 60° C) |
| Relative humidity | 0 to 90% noncondensing |
| Measuring Time | 8 to 20 seconds depending on mode of operation and type of transformer |
| Measurement Method | ANSI/IEEE C57.12.90 |
| Dimensions | Instrument: 8.5 H x 21.5 W x 13 D in. (216 H x 546.1 W x 330.2 D mm) Case: 25 H x 19 W x 26 D in. (635 H x 483 W x 660 D mm) |
| Instrument weight | With Standard Leads: 25 lb (11.3 kg) With Optional Leads 30 ft. (10 m): 47 lb. (21.3 kg) With Transit Case: 84 lb. (31.4 kg) |