True 3-Phase Automatic Transformer Turns Ratio Tester
$18,283.07
Manufacturer: Vanguard Instrument
Model: Tri-Phase
P/N: 9008-UC
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Description
True 3-Phase Automatic Transformer Turns Ratio Tester
Description of True 3-Phase Automatic Transformer Turns Ratio Tester
Vanguard’s new TRI-PHASE is a true 3-phase transformer turns ratio tester designed to conform to the IEEE C57.12.90 measurement method. The TRI-PHASE outputs a 3-phase excitation test voltage to the three transformer primary windings. The induced 3-phase secondary voltages are sensed and the transformer turns ratio is calculated. The TRI-PHASE is capable of measuring turns ratios from 0.8 to 15,000. The 3-phase excitation current, phase angle readings along with the turns ratios are displayed on the built-in LCD. Since a 3-phase voltage is used to excite the transformer windings, the TRI-PHASE can detect and measure turns ratios of any transformer type. The TRI-PHASETM can easily measure the turns ratio of phase-shifting transformers where other 3-phase transformer ratio testers cannot.
- Generates its own 3-phase transformer test voltage from single-phase AC or DC Power input
- Capable of detecting 130 different 3-phase transformer types defined by ANSI, IEC, and Australian standards plus phase shifting transformers
- 64 x 128 graphic LCD screen
- Store up to 128 transformer test-plans in Flash EEPROM
- Store up to 112 test records in Flash EEPROM
- Built-in USB Flash Drive Interface
- Computer Interface (RS-232C and USB Port)
- 4.5 Inch thermal printer
- Built-in transformer load tap changer
- Powered from a single phase 100-264 Vac 50/60 Hz
TECHNICAL SPECIFICATIONS
| TYPE | True three-phase transformer turns-ratio tester |
| PHYSICAL SPECIFICATIONS | 21”W x 9”H x 17”D (53 cm x 24 cm x 43 cm); Weight: 35 lbs (15.8 Kg) |
| INPUT POWER | 3 amps, 100 – 240 Vac, 50/60 Hz |
| MEASUREMENT METHOD | ANSI/IEEE C57.12.90 |
| TURNS-RATIO MEASURING RANGE | 0.8 – 15,000 (5-digit resolution) |
| TURNS-RATIO ACCURACY | 0.8 – 999: ±0.1%, 1000 – 1599: ±0.2%, 1600 – 9999: ±1%, 10,000 – 15,000: 1.5% @ 8 Vac 0.8 – 999: ±0.1%, 1000 – 1599: ±0.2%, 1600 – 9999: ±1%, 10,000 – 15,000: 1.5% @ 40 Vac 0.8 – 999: ±0.1%, 1000 – 1599: ±0.2%, 1600 – 9999: ±1%, 10,000 – 15,000: 1.5% @ 100 Vac |
| TEST VOLTAGES | Three-phase, 8 Vac @ 1 Amp, 40 Vac @ 0.2 Amps, 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 |
| 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). |
| COMPUTER INTERFACES | One RS-232C port, One USB port |
| PC SOFTWARE | Windows® XP/Vista-based Transformer Turns-Ratio Analyzer application is included with purchase price |
| INTERNAL TEST RECORD STORAGE | Stores up to 112 transformer test records. Each record holds the test record header and up to 33 readings. |
| INTERNAL TEST PLAN STORAGE | Stores up to 128 transformer test plans. 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, 1 Amp |
| SAFETY | Designed to meet UL 61010A-1 and CAN/CSA C22.2 No. 1010.1-92 standards |
| ENVIRONMENT | Operating: -10° to 50° C (15°F to +122° F); Storage: -30° C to 70° C (-22°F to +158° F) |
| CABLES | One 15-foot single-phase set, One 15-foot three-phase set, One 25- foot extension set, One ground cable, One USB cable, One RS-232C cable, power cord, cable bag |
| OPTIONS | Transportation case |
| WARRANTY | One year on parts and labor |
| Specifications are valid at nominal voltage and ambient temperature of +25˚C (+77˚F). Last updated on February 16, 2009 |
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Transformer Test Voltages
The Tri-Phase generates three-phase transformer test voltages from a single-phase AC or DC power source. Three test voltages (8 Vac, 40 Vac, 100 Vac) allow the Tri-Phase to test CT’s and PT’s, as well as power transformers.
Auto-Detect Transformer Configuration
The Tri-Phase can automatically detect 130 specific vector groups for different transformer types defined by ANSI, CEI/IEC, and Australian standards, as well as phase-shifting transformers.
Internal Test Record Storage
Up to 112 test records can be stored in the Tri-Phases’s Flash EEPROM. Each test record may contain up to 99 turns-ratio, excitation current, phase angle, and nameplate voltage readings. Test records can be recalled locally or transferred to a PC via the available interfaces (RS-232C port, USB port, USB Flash drive port).
Transformer Test Plans
The Tri-Phase can store up to 128 transformer test-plans in its Flash EEPROM. A test-plan is comprised of the transformer nameplate voltages for each tap setting. The calculated turns-ratio based on the nameplate voltages is compared with the measured turns-ratio to derive the percentage error and Pass/Fail results. By recalling a test plan, a transformer can be quickly tested and turns-ratio Pass/Fail reports can be reviewed. Test plans can be created with the PC software and can be transferred to the Tri-Phase via the available interfaces (RS-232C port, USB port, USB Flash drive port).
User Interface
The Tri-Phase features a back-lit LCD screen (128 x 64 pixels) that is viewable in both bright sunlight and low-light levels. The test results screen displays the transformer turns-ratio, excitation current, phase angle, and percentage error. The unit is controlled via a rugged, 16-key, membrane keypad and a digital rotary switch.
Computer Interface
The Tri-Phase can be computer-controlled via the RS-232C or USB port using the Windows®-based Transformer Turns-Ratio Analyzer Series 2 (TTRA S2) software provided with each Tri-Phase. The software can be used to run a test and to store test results on a PC. Test results can also be exported to Excel, PDF, and XML formats for further analysis.
Built-in Thermal Printer
The Tri-Phase features a convenient built-in 4.5” wide thermal printer that can be used to print test results.
Transformer Load Tap Changer Control
Voltage regulator or LTC tap positions can be changed remotely using the unit’s built-in transformer load tap changer. This feature eliminates the need to manually raise or lower tap positions from the transformer control panel.
Input Power Sources
The Tri-Phase can be powered from a single-phase 100-240 Vac 50/60 Hz power source. A built-in safety ground detection circuit can detect and display any ground fault problems with the AC input source.
USB Flash Drive Interface
A built-in USB Flash drive interface provides a convenient method for transferring test plans and test records to or from a USB Flash drive. The user can store up to 999 transformer test plans and test records on a USB Flash drive, and the supplied PC software can be used to view the test records.
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