ATRT-03 S2
3-Phase Transformer Turns Ratio Tester
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.
- 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
- Optional 4.5″ thermal printer
- Powered from a single phase 100-264 Vac 50/60 Hz
| TYPE | Portable, lightweight, automatic, 3-phase transformer turns-ratio meter |
| PHYSICAL SPECIFICATIONS | 18”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 VOLTAGE | 100 – 240 Vac, 50/60 Hz |
| MEASUREMENT METHOD | ANSI/IEEE C57.12.90 |
| 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 @ 1Amp, 40 Vac @ 0.2 Amp, 100 Vac @ 0.1 Amp |
| EXCITATION CURRENT READING RANGE | 0 – 1 Ampere; 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 (Optional) |
| 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 | 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 CONTACT | 240 Vac, 2 Amps |
| 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 set, One 15-foot 3-phase set, One 25-foot extension set, One safety ground, One USB, One RS-232C, cable bag |
| OPTIONS | Transportation Case |
| WARRANTY | One year on parts and labor |
