The Vanguard TRI-PHASE True Three Phase TTR can be used as a stand-alone unit or can be computer-controlled. It can be operated locally using its alpha-numeric keypad and rotary switch. Information is displayed on a back-lit LCD screen (128 x 64 pixels) that is viewable in both bright sunlight and low-light levels.
The Vanguard TRI-PHASE True Three Phase TTR can store up to 112 test records and 128 test plans in Flash EEPROM. Test records or test plans can be stored or transferred to and from a PC via the available interfaces (RS-232C port, USB port, USB Flash drive port).
The Vanguard 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.
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.
The Vanguard 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 TriPhase. 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- inch wide thermal printer that can be used to print test results.
Input Power Sources
The TRI-PHASE can be powered from a singlephase 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.