Vanguard ATRT-03_03B User Manual
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ATRT-03, ATRT-03A, AND ATRT-03B USER’S MANUAL
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1.2.2. ATRT-03A Technical Specifications
Table 2. ATRT-03A Technical Specifications
TYPE Portable, lightweight, automatic, battery-powered three-phase transformer
turns-ratio meter
PHYSICAL SPECIFICATIONS 19”W x 7”H x 15”D (48.2cm x 17.8 cm x 38.1 cm); Weight: 25 lbs (11.3 kg)
INPUT POWER
3 amps, 85 – 264 Vac or 110 – 370 Vdc or 12 Vdc
BATTERIES Two 12Vdc/2AH, rechargeable Sealed Lead Acid batteries (up to 3-hours
operation)
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 @ 350 mA, 40 Vac @ 70 mA, 100 Vac @ 20 mA
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
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)
HUMIDITY (MAX) 90% RH @ 40˚ C (104˚ F) non-condensing
ALTITUDE (MAX) 2000m (6562 ft) to fully safety specifications
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
NOTE
The above specifications are valid at nominal operating voltage and at a
temperature of 25
°C (77°F). Specifications may change without prior notice.