Vanguard ATRT-03 3Φ Transformer Turns Ratio Tester

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Vanguard ATRT-03 3-phase transformer turns-ratio meter
  • Features & specifications

  • Portable, lightweight, automatic, 3Φ TTR
  • Microprocessor-based, lightweight, and rugged
  • Can be used as a stand-alone unit or computer-controlled
  • Alpha-numeric keypad and rotary switch for local use
  • Print results on built-in 4.5-inch wide thermal printer
  • USB and RS-232C to transfer records to and from a PC
  • Ideal for transformer testing at substations
  • Utilizes the IEEE C57.12.90 measurement method
  • Measures turns-ratios from 0.8 to 15,000
  • All readings displayed on large backlit LCD
  • LCD screen is viewable in bright sunlight

General Specifications
Input power 3 amps, 100 to 120 Vac or 200 to 240 Vac (selectable), 50/60 Hz
Measurement method ANSI/IEEE C57.12.90
Ratio measuring range 0.8 to 15,000 (5-digit resolution)
Turns ratio accuracy 0.8 to 1999: ±0.1%, 2,000 to 3,999: ±0.25%, 4,000 to 15,000: ±1% @ 8 Vac
0.8 to 1999: ±0.1%, 2,000 to 3,999: ±0.20%, 4,000 to 15,000: ±1% @ 40 Vac
0.8 to 1999: ±0.1%, 2,000 to 3,999: ±0.15%, 4,000 to 15,000: ±1% @ 100 Vac
Adjustment None required
Test voltages 8 Vac @ 1 amp, 40 Vac @ 0.6 amp, 100 Vac @ 0.1 amp
Excitation current reading range Accuracy (0 to 1 amp): ±1mA, ±2% of reading (±1 digit)
Phase angle measurement Accuracy (0 to 360 degrees): ±0.2 degrees ( ±1 digit)
Display Back-lit LCD screen (20 Characters by 4 Lines); Viewable in bright sunlight and low-light levels
Printer Built in 4.5 inch wide thermal printer
Internal test record storage Stores 200 complete transformer test records. Each test record includes nameplate voltage, winding turns-ratios, excitation current, and winding phase angle.
Internal test plan storage Stores up to 128 transformer test plans
Safety UL Certified (UL 61010A-1), CAN/CSA Certified (C22.2 No. 1010.1-92)
Cables One 15 foot single phase cable set, One 15 foot 3 phase cable set, One 25 foot extension cable set, One cable carrying duffel bag included
Environment Operating: -10° to 50° C (15° to 122° F); Storage: -30° C to 70° C (-22° to 158° F)
Weight and dimensions (17W x 7H x 13D)in. (43.2cm x 17.8 cm x 33.0 cm) Weight: 14 lbs (6.4 kg)
Options Transportation case, transformer tap-changer remote control device