Vanguard Instruments TRF-100

• Automatic 3-Phase Testing: The TRF-100 automatically tests three-phase transformers, simplifying the testing process.
• Wide Turns Ratio Range: It can measure turns ratios from 0.8 to 50,000 to 1.
• High Accuracy: The turns ratio measurement accuracy is $\pm 0.1\%$ or better.
• IEEE C57.12.90 Compliance: It determines the turns ratio using the IEEE C57.12.90 measurement method, ensuring reliable results.
• Multiple Test Voltages: The unit offers three test voltages: 4 Vac (at 1.0A), 40 Vac (at 0.6A), and 100 Vac (at 0.1A), allowing it to test various types of transformers, including CTs and PTs.
• Automatic Phase Detection: It can automatically detect and test 67 transformer types defined by ANSI, CEI/IEC, and Australian standards without requiring changes to test lead connections. Some sources mention it can detect up to 130 transformer types.
• Excitation Current and Phase Angle Measurement: In addition to the turns ratio, the TRF-100 can also measure the transformer’s excitation current (in mA) and winding phase angle (from 0 to 360 degrees with an accuracy of $\pm 0.2$ degrees).
• Nameplate Voltage Comparison: If the transformer’s nameplate voltages are provided, the TRF-100 can calculate the turns ratio percentage error.

• Measurement Method: ANSI/IEEE C57.12.90
• Turns Ratio Measuring Range: 0.8 – 50,000 to 1
• Typical Turns Ratio Accuracy:
  
  • 4 Vac: 0.8 – 1,000 ($\pm 0.08\%$), 1,001 – 4,000 ($\pm 0.1\%$), 4,001 – 15,000 ($\pm 0.25\%$)
  • 40 Vac: 0.8 – 1,000 ($\pm 0.05\%$), 1,001 – 4,000 ($\pm 0.1\%$), 4,001 – 15,000 ($\pm 0.25\%$), 15,001 – 20,000 ($\pm 0.4\%$), 20,001 – 50,000 ($\pm 0.5\%$)
  • 100 Vac: 0.8 – 1,000 ($\pm 0.05\%$), 1,001 – 4,000 ($\pm 0.1\%$), 4,001 – 15,000 ($\pm 0.25\%$), 15,001 – 20,000 ($\pm 0.4\%$), 20,001 – 50,000 ($\pm 0.5\%$)
• Test Voltages: 4 Vac @ 1.0A, 40 Vac @ 0.6A, 100 Vac @ 0.1A
• Current Reading Range: 0 – 2 Amperes; accuracy: $\pm 1mA$, $\pm 2\%$ of reading ($\pm 1$ digit)
• Phase Angle Measurement: 0 – 360 degrees; Accuracy: $\pm 0.2$ degree ($\pm 1$ digit)
• Display: Back-lit LCD screen (20 characters by 4 lines)
• Computer Interface: USB
• Internal Test Record Storage: 1,000 complete test records
• Internal Test Plan Storage: Up to 128 test plans
• Input Power: 100 – 120 Vac or 200 – 240 Vac (selectable), 50/60 Hz, 3 Amps
• Operating Temperature: -10° to 50° C (15° to +122° F)
• Storage Temperature: -30° C to 70° C (-22° to +158° F)
• Humidity: 90% RH @ 40°C (104°F) non-condensing
• Dimensions: 17”W x 7”H x 13”D (43.2 cm x 17.8 cm x 33.0 cm)
• Weight: 14 lbs (6.4 kg)

• User-Friendly Interface: It features a back-lit LCD screen (20 characters x 4 lines) for clear visibility in different lighting conditions and a rugged “QWERTY”-style membrane keypad for easy control.
• Computer Interface: The TRF-100 can be controlled via a USB interface using the included Vanguard TTRA S2 software. Test results can be stored on a PC and exported in Excel, PDF, and XML formats.
• Internal Data Storage: It can store up to 1,000 complete transformer test records, each including nameplate voltage, turns ratios, excitation current, and winding phase angle.
• Transformer Test Plans: The instrument can store up to 128 transformer test plans. A test plan includes the transformer nameplate voltages for each tap setting, allowing for quick Pass/Fail assessments based on measured vs. calculated turns ratios. These test plans can be created and transferred to the TRF-100 using the PC software.
• Optional Built-in Thermal Printer: An optional 4.5-inch wide thermal printer can be included to print test results directly in the field.
• Safety Features: The TRF-100 includes a low-level test voltage output for verifying test lead hook-up before applying the full test voltage. It is designed to meet IEC 61010 (1995), UL 61010A-1, and CSA-C22.2 safety standards.

Manual ⇓

Datasheet ⇓