The Vanguard Instruments TRF-250 is a fourth-generation transformer turns ratio tester that uses the IEEE C57.12.90 measurement method. It has a turns-ratio range of 0.8 to 50,000 to 1 and can detect 130 different 3-phase transformer types defined by ANSI, IEC, and Australian standards.
The TRF-250 features a built-in 4.5-inch wide thermal printer and can be used as a standalone unit or can be computer-controlled via a wireless Bluetooth PC interface.
- Increased accuracy: The higher test voltage of 250Vac provides more accurate turns ratio readings.
- Ease of use: The 44-key “QWERTY”-style membrane keyboard and backlit LCD screen make it easy to operate the TRF-250.
- Wireless Bluetooth PC interface: The wireless Bluetooth PC interface allows you to connect the TRF-250 to a computer for remote control and data logging.
- Built-in thermal printer: The built-in thermal printer allows you to print test results directly from the TRF-250.
- Wide range of applications: The TRF-250 can be used to test a wide range of transformers, voltage regulators, and load-tap changers.
Some of the key features of the TRF-250 include:
- High turns-ratio test voltage of 250Vac
- 44-key “QWERTY”-style membrane keyboard
- Wireless Bluetooth Connection
- Backlit LCD screen (128 x 64 pixels)
- Built-in 4.5-inch wide thermal printer
- Capable of detecting 130 different 3-phase transformer types
- Four test voltages: 4Vac, 40Vac, 100Vac, and 250Vac
- Phase angle and excitation current measurement
Overall, the Vanguard Instruments TRF-250 is a powerful and accurate transformer turns ratio tester that is ideal for a wide range of applications. If you are looking for a reliable and easy-to-use transformer turns ratio tester, the TRF-250 is a great option.
