Megger TTR™310 Three-Phase TTR Test Set

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Megger TTR310 Three-Phase Transformer Turns Ratio Test Set
  • 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)

Specifications
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)