Main Functions and Characters

1. The tester makes automatic measurement with no need to set any parameters and automatically completes the three-phase ratio and connection group measurements with easy operation. All you need to do is to press a button.

2.The tester measures three-phase and single-phase transformer ratios automatically, and calculates the ratio error.

3. Built-in three-phase signal source, which can measure the transformation ratio of transformers of various connection groups such as Y / y, Y / d, D / y, D / d.

4. It can measure the label and polarity of the transformer connection group, and display the primary and secondary wiring vector diagrams, which are intuitive and clear; the instrument has a self-calibration function, which can judge the test line or the instrument failure based on the self-calibration results.

5. The tester can track the transformer on-load tap-changer position automatically, and indicate the current tap point automatically.

6. The tester can display a transformer’s first and secondary voltage Oscillograms and phase relationship. It can measure transformer’s first and second harmonic voltages, to facilitate the analysis of transformer failure.

7.  The tester is with CT, PT ratio, polarity testing function

8. The tester has perfect and reliable automatic protection, to ensure the intactness of the tester under abnormal conditions.

9. The tester has small size and light weight. It makes accurate measurement at fast speed (about 3 seconds to complete the test).

10. The tester is available to store and print all the test results. It has Built-in 128M memory (extendable to 4G memory card), available to export the database by USB, or upload to computer. The database supports excel spreadsheet opening.

11. The tester has7-inch true color touch screen operation, emwinGUI interface and support English input, which is easy and convenient. It also has no power-down calendar and clock function. The test time can be stored at any time.

12. The tester support on-site record print by Bluetooth or serial printer.

Main Technical Specifications

1. Ratio measurement range: 0.8-20000

2. Ratio measurement accuracy:0.2%（0.8-1000），0.5%（1000-5000）,0.1%（0.8-2000），0.2%（2000-20000）( customized)

3. Working power: AC220V  

4. Operating temperature: -10 ℃ -40 ℃

5. Environmental humidity: 10% -85%

6. Volume: 270 × 190 × 70mm

7. Weight: 2kg (not including test wires)