ATRT-01 S3
Transformer Turns Ratio Tester
The ATRT-01 S3 is Vanguard’s fourth generation, micro-processor based, single phase, automatic transformer turns-ratio tester. The ATRT-01 S3 uses the IEEE C57.12.90 measuring method to determine the transformer turns-ratio. The transformer turns-ratio is determined by precisely measuring the voltages across the unloaded transformer windings. The ATRT-01 S3’s measuring circuitry self adjusts before each measurement to ensure turns-ratio accuracy. Two selectable test voltages, 4Vac and 40Vac, offer flexibility in testing different types of transformers.
- Standalone or computer-controlled
- Inexpensive
- Displays turns-ratio from 0.8-15,000
- Calculates turns-ratio percentage error
- Displays winding polarity and phase angle
- Displays excitation current
| TYPE | Transformer Turns Ratio Tester |
| PHYSICAL SPECIFICATIONS | Dimensions: 12” x 10” x 8” (30.4 cm x 25.4 cm x 20.3 cm) Weight: 8 lbs. (3.6 Kg) |
| INPUT POWER | 120 or 240 Vac (Selectable), 50/60 Hz |
| MEASURING METHOD | ANSI/IEEE C57.12.90 |
| RATIO MEASURING RANGE | 0.8 - 15,000 (5 digit resolution) |
| TURNS-RATIO ACCURACY | 40 Vac: 0.8-1,999 (0.1%), 2,000-3,999 (0.25%), 4,000-15,000 (1%) 4 Vac: 0.8-1,999 (0.1%), 2,000-3,999 (0.25%), 4,000-15,000 (2%) |
| TEST VOLTAGE | 4 Vac @ 1.0A, 40 Vac @ 0.6A |
| PHASE ANGLE MEASUREMENT | 0 - 360 degrees, Accuracy ±0.2 degree (±1 digit) |
| POLARITY READING | In-Phase or Out-of-Phase indication |
| EXCITATION CURRENT READING RANGE | 0-2 Amperes, Accuracy: 2% of reading (±1 mA) |
| DISPLAY | Back-lit LCD (128 x 64 pixels), viewable in direct sunlight and low light levels |
| COMPUTER INTERFACE | RS-232C |
| PC SOFTWARE | Windows XP/Vista/7 Transformer Analysis Software (included with purchase) |
| INTERNAL TEST RECORD STORAGE | 128 records of 33 readings |
| EXTERNAL TEST RECORD STORAGE | Up to 999 test records on external USB Flash drive. |
| SAFETY | Designed to meet IEC 61010 (1995), UL 61010A-1, and CSA-C22.2 standards |
| ENVIRONMENT | Operating: -10ºC to 50ºC (15ºF to +122ºF) Storage: (-30ºC to 70ºC (-22ºF to +158ºF) |
| HUMIDITY (MAX) | 90% RH @ 40˚ C (104˚ F) non-condensing |
| ALTITUDE (MAX) | 2000m (6562 ft) to full safety specifications |
| CABLES | One 15 ft. (4.6m) Single phase cable, one power cord, one cable bag |
| OPTIONS | Transportation Case (Can hold unit and cables) |
| WARRANTY | One year on parts and labor |
