ATRT-03A S2 3-Phase Transformer Turns Ratio Tester
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ATRT-03A S2

3-Phase Transformer Turns Ratio Tester
Part Number(s)
9042-UC [ATRT-03A S2]
Download Links
ATRT-03A S2 Datasheet
Customer References
ATRT-03 S2 User's Manual (English)

The Vanguard Instruments Company Model ATRT-03A Series 2 is Vanguard's third generation, microprocessor-based, automatic, three phase transformer turns-ratio tester.

The ATRT-03A Series 2 determines the transformer turns ratio using the measurement method. The ATRT-03A Series 2 generates and outputs an excitation voltage to the three transformer primary winding. The included secondary voltage is sensed and the transformer turns ratio is calculated.

The ATRT-03A Series 2 is capable of measuring turns ratios from 0.8 to 15,000. The transformer turns-ratio, excitation current and phase-angle readings are displayed on the LCD. The built-in transformer type detection feature allows the ATRT-03A Series 2 to detect and test 130 transformer types defined by .
  • Capable of detecting 130 different 3-phase transformer types defined by plus phase shifting transformers
  • Store up to 128 transformer test-plans in Flash EEPROM
  • Store up to 112 test records in Flash EEPROM
  • Built-in USB Flash Drive Interface
  • Computer Interface (RS-232C and USB Port)
  • 4.5 Inch thermal printer
  • Built-in transformer load tap changer
  • Powered from the built-in rechargeable lead acid batteries (3 hours) or a single phase 100-240 Vac 50/60 Hz.

ATRT-03A S2

Cables

ATRT-03A S2

Technical Specifications
TYPE Portable, lightweight, automatic, 3-phase transformer turns-ratio meter
PHYSICAL SPECIFICATIONS 20”W x 7.5”H x 15.5”D (50 cm x 19 cm x 39.6 cm); Weight: 27 lbs (12 kg)
OPERATING VOLTAGE 100 – 240 Vac, 50/60 Hz
BATTERIES Two lead acid batteries (12V, 2 AH) provide up to 3 hours of operation
MEASUREMENT METHOD
TURNS-RATIO MEASURING RANGE 0.8 – 15,000
TURNS-RATIO ACCURACY 0.8 – 1,999: ±0.1%, 2,000 – 3,999: ±0.25%. 4,000 – 15,000: ±1% @ 8 Vac
0.8 – 1,999: ±0.1%, 2,000 – 3,999: ±0.20%. 4,000 – 15,000: ±1% @ 40 Vac
0.8 – 1,999: ±0.1%, 2,000 – 3,999: ±0.15%. 4,000 – 15,000: ±1% @ 100 Vac
TEST VOLTAGES 8 Vac @ 350 mA, 40 Vac @70 mA, 100 Vac @ 20 mA
EXCITATION CURRENT READING RANGE 0 – 2 Amperes; Accuracy: ±0.1 mA, ±2% of reading (±1 mA)
PHASE-ANGLE MEASUREMENT 0 – 360 degrees; Accuracy: ±0.2 degree ( ±1 digit)
DISPLAY Back-lit LCD screen (64 x 128 dot graphic display); Viewable in bright sunlight and low-light levels
PRINTER Built-in 4.5-inch wide thermal printer
COMPUTER INTERFACES One RS-232C port, One USB port
EXTERNAL DATA STORAGE One USB Flash drive interface port; Up to 999 transformer test records can be stored on a USB Flash drive (not included).
PC SOFTWARE Windows XP/Vista-based Transformer Turns-Ratio Analyzer application is included with purchase price
INTERNAL TEST RECORD STORAGE The unit can store 112 transformer test records. Each record holds the test record header and up to 33 readings.
INTERNAL TEST PLAN STORAGE The unit can store 128 transformer test plans. Test plans can be transferred to the unit from the PC via the RS-232C/USB port or via the USB Flash drive interface
LOAD TAP CHANGER CONTACT 240 Vac, 1 Amp
SAFETY
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 set, One 15-foot 3-phase set, one 25-foot extension set, One safety ground, One USB, One RS-232, One LTC cable, cable bag
OPTIONS Transportation case
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
ATRT-03 S2 Training for ABB Service Center in Jakarta