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

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The Vanguard Instruments ATRT-03B is the third generation, microprocessor-based, automatic, three phase, transformer turns-ratio tester. This light weight, rugged, portable unit is designed for transformer testing at utility power substations.

The ATRT-03B determines the transformer turns ratio using the IEEE C57.12.90 measurement method. The ATRT-03 S2 outputs an excitation test voltage to the transformer primary windings. The induced secondary voltage is sensed and the transformer turns ratio is calculated. The ATRT-03 S2 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 large LCD. The automatic transformer type detection feature allows the ATRT-03 S2 to detect and test 130 transformer types defined by ANSI, CEI/IEC and Australian standards.

Highest ratio: 0.8 - 15,000
Capable of detecting 130 different 3-phase transformer types defined by ANSI, IEC, and Australian standards
3 Test voltages available: 8Vac, 40Vac, 100Vac
Phase angle and excitation current measuring
Computer Interface (RS-232C and USB Port)
USB flash drive interface
Name-plate turns ratio calculation
Computed % error based on measured and calculated ratio
Powered from a single phase 100-264 Vac 50/60 Hz

Product Includes
ATRT-03B Tester, One 15-foot single-phase cable set, One 15-foot 3-phase cable set, One 25-foot extension cable set, One cable-carrying and duffel bag

Specifications
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
Test Voltages: 8 Vac @ 1 amp, 40 Vac @ 0.6 amp, 100 Vac @ 0.1 amp
Excitation Current Range: 0 – 2 Amperes; Accuracy: ±1mA, ±2% of reading (±1 digit)
Phase Angle Measurment: 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: NO
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)
Warranty: One year on parts and labor

size   17”W x 7”H x 13”D (14 lbs)
Shipping Weight   16.0000
Power Supply   100 – 120 Vac 50/60 Hz (3 amps)

Manufacturer Warranty   1 Year