ATRT-03B

3-Phase Transformer Turns Ratio Tester

  
       
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ATRT-03B Datasheet
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The Vanguard Instruments Co. Model ATRT-03B is a second generation, microprocessor-based, automatic, three-phase, transformer, turns-ratio meter. The Model ATRT-03B is lightweight, rugged, and portable for use in transformer testing at utility power substations.

The ATRT-03B can store 200 transformer test records in Flash EEPROM. Each test record may contain up to 99 ratio, excitation current, phase angle, and name plate voltage readings. Test records can be recalled and downloaded to an IBM-compatible PC.
  • Highest ratio: 0.8 - 15,000
  • Name-plate turns ratio calculation
  • Computed % error based on measured and calculated ratio
  • Automated phase switching
  • Excitation current and phase angle measuring
  • Computer interface
       

ATRT-03B

Cables

  
       
Cable Part Number
H 3-Phase Cable [7B] H3PHCABLE[7B]
H Extension Cable [5C] HEXTCABL[5C]
H Single Phase Cable [5B] HSINGLEP[5B]
Power + Ground Combination Cable [16A] POWRGRND[16A]
RS-232C Cable [15B] 232CCABL[15B]
X 3-Phase Cable [8C] X3PHCABL[8C]
X Extension Cable [6C] XEXTCABLE[6C]
X Single Phase Cable [6B] XSINGLEP[6B]
       

ATRT-03B

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: 13 lbs (5.9 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
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 Designed to meet UL 61010A-1 and CAN/CSA C22.2 No. 1010.1-92 standards
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 +25˚C (+77˚F).
Last updated on February 16, 2009
       

Field Pictures

   
       
ATRT-03 at TNB Substation in Malaysia
TNB ATRT Training