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Vanguard ATRT-03 S2 Three-Phase Transformer Turns Ratio Tester

Manufacturer part number: ATRT-03-S2
The ATRT-03 S2 can be used as a standalone unit or can be computer-controlled.
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Key Features and Functions

The Vanguard Instruments ATRT-03 S2 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-03 S2 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.

  • Ratio range: 0.8 ¬ 15,000 : 1
  • 3 test voltages: 8Vac, 40Vac, and 100Vac
  • Phase angle and excitation current measurement
  • RS-232C and USB PC interfaces
  • Optional 4.5” wide thermal printer
TYPEPortable, lightweight, automatic, 3-phase transformer turns-ratio meter
PHYSICAL SPECIFICATIONS18”W x 7”H x 15”D   (45.7 cm x 17.8 cm x 38.1 cm); Weight: 20 lbs (9.0 kg)
OPERATING VOLTAGE100 – 240 Vac, 50/60 Hz
MEASUREMENT METHODANSI/IEEE C57.12.90
TURNS-RATIO MEASURING RANGE0.8 – 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 VOLTAGES8 Vac @ 1Amp, 40 Vac @ 0.2 Amp, 100 Vac @ 0.1 Amp
EXCITATION CURRENT READING RANGE0 – 1 Ampere; Accuracy: ±0.1 mA, ±2% of reading (±1 mA)
PHASE-ANGLE MEASUREMENT

0 – 360 Degrees; Accuracy: ±0.2 degree (±1 digit)

DISPLAYBack-lit LCD screen (64 x 128 dot graphic display); Viewable in bright sunlight and low-light levels
PRINTERBuilt-in 4.5-inch wide thermal printer (Optional)
COMPUTER INTERFACESOne RS-232C port, One USB port
EXTERNAL DATA STORAGEOne USB Flash drive interface port; Up to 999 transformer test records can be stored on a USB Flash drive (not included).
PC SOFTWAREWindows® XP/Vista-based Transformer Turns-Ratio Analyzer application is included with purchase price
INTERNAL TEST RECORD STORAGE
stores 112 complete transformer test records, each record holding the test
record header and up to 99 readings
INTERNAL TEST PLAN STORAGE

Can store 128 transformer test plans internally. 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 CONTACT240 Vac, 2 Amps
SAFETYDesigned to meet UL 61010A-1 and CAN/CSA C22.2 No. 1010.1-92 standards
ENVIRONMENTOperating: -10˚ to 50˚ C (15˚ to +122˚ F); Storage: -30˚ C to 70˚ C (-22˚ to +158˚ F)
CABLESOne 15-foot Single-phase set, One 15-foot 3-phase set, One 25-foot extension set, One safety ground, One USB, One RS-232C, cable bag
OPTIONSTransportation Case
  • UL 61010A-1
  • CAN/CSA C22.2 No. 1010.1-92 standards

Description

Key Features and Functions

The Vanguard Instruments ATRT-03 S2 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-03 S2 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.

  • Ratio range: 0.8 ¬ 15,000 : 1
  • 3 test voltages: 8Vac, 40Vac, and 100Vac
  • Phase angle and excitation current measurement
  • RS-232C and USB PC interfaces
  • Optional 4.5” wide thermal printer