ATRT-03 3-Phase Transformer Turns Ratio Tester
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ATRT-03

3-Phase Transformer Turns Ratio Tester

Part Number(s)
9037-UC [110V ATRT-03]
9038-UC [220V ATRT-03]
Download Links
ATRT-03 Datasheet
Customer References
ATRT-03 User's Manual (English)

The ATRT-03 is a three-phase, transformer turns-ratio tester. The Model ATRT-03 is lightweight, rugged, and portable, and is designed for transformer testing at utility power substations.

The Model ATRT-03/03A determines the transformer turns ratio by accurately measuring the voltages across the unloaded transformer windings and then displaying the ratio of these voltages (ratios range from 0.8 to 15,000). The ATRT-03A calibrates each measurement to ensure the turns-ratio accuracy.

  • Highest ratio: 0.8 - 15,000
  • Built-in 4.5" thermal printer
  • Excitation current measuring
  • Phase angle measuring
  • Computer interface
  • Name-plate turns ratio calculation
  • Computed % error based on measured and calculated ratio
  • Automated phase switching

ATRT-03

Cables

ATRT-03

Technical Specifications

TYPE Portable, lightweight, automatic, three-phase transformer turns-ratio meter
PHYSICAL SPECIFICATIONS 17”W x 7”H x 13”D (43.2cm x 17.8 cm x 33.0 cm); Weight: 14 lbs (6.4 kg)
INPUT POWER 3 amps, 100 – 120 Vac or 200 – 240 Vac (selectable), 50/60 Hz
MEASUREMENT METHOD ANSI/IEEE C57.12.90
RATIO-MEASURING RANGE 0.8 – 15,000 (5-digit resolution)
TURNS-RATIO ACCURACY 0.8 – 1999: ±0.1%, 2,000 – 3,999: ±0.25%, 4,000 – 15,000: ±1% @ 8 Vac
0.8 – 1999: ±0.1%, 2,000 – 3,999: ±0.20%, 4,000 – 15,000: ±1% @ 40 Vac
0.8 – 1999: ±0.1%, 2,000 – 3,999: ±0.15%, 4,000 – 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 0 – 2 Amperes; Accuracy: ±1mA, ±2% of reading (±1 digit)
PHASE-ANGLE MEASUREMENT 0 – 360 degrees; Accuracy: ±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
COMPUTER INTERFACE RS-232C (19,200 baud) port
PC SOFTWARE Windows XP/Vista-based Transformer Turns-Ratio Analyzer application is included with purchase price
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)
ENVIRONMENT Operating: -10° to 50° C (15° to +122° F); Storage: -30° C to 70° C (-22° to +158° F)
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
OPTIONS Transportation case, transformer tap-changer remote control device
WARRANTY One year on parts and labor
Specifications are valid at nominal voltage and ambient temperature of +25C (+77F).
Last updated on February 16, 2009

Field Pictures

TNB ATRT Training