Performance characteristics of three-phase ratio tester

Test Transformer Ratio Tester

Performance characteristics:

1. The transformer ratio tester automatically generates three-phase, two-phase, or single-phase standard power supplies with stable amplitude and constant phase

2. Directly measure the voltage ratio and phase angle difference between the high and low voltage sides without being constrained by the internal wiring method of the transformer

3. Fast speed, the testing time for a set of data is a few seconds, and the tap changer can be converted during the testing process to complete the measurement of all tap positions of a transformer in one go. The testing time for a 19 tap position transformer only takes 10 minutes, greatly improving work efficiency

4. The transformer ratio tester has an overcurrent protection function inside

5. The test results are not affected by fluctuations in the frequency and amplitude of the power supply

6. Especially suitable for testing the transformation ratio and phase difference of special transformers

7. Fully automatic ratio tester for simultaneous measurement of three phases in the true sense

8. The transformer ratio tester has an RS232 interface, which facilitates the testing automation requirements of manufacturers

9. The variable ratio tester has data storage function, which can save 2048 sets of test data and upload them to the computer through RS232 interface

technical indicators：

1. Variable ratio test range: 1-10000
2. Group testing scope: 1-12
3. Accuracy of Ratio Test: Ratio Range 1-1000:0.2 Level Ratio Range 1000-10000:0.5 Level
4. Variable ratio resolution: 0.0001
5. Angle resolution: 0.01 °
6. Instrument power input: 220V ± 10%, 50Hz ± 1Hz
7. Operating temperature: -20 ℃ -40 ℃
8. Relative humidity: ≤ 85%, no condensation
9. Volume: 320mm × 400mm × 170mm
10. Host: 7kg

Notes:

1. During the measurement period, do not touch the test sample.

2. If the test line is short circuited and the high and low voltages are reversed, the fuse will be blown. After the fuse is blown, if measurement is taken, the LCD screen will display the words "Measuring, please wait!" and then stop. At this point, please shut down, replace the fuse with the same capacity, and retest.

3. The connection should maintain good contact, and the instrument should have good grounding!

4. The workplace of the instrument should be away from strong electric fields, strong magnetic fields, and high-frequency equipment. The smaller the interference from the power supply, the better. It is recommended to use lighting wires. If the power interference is still significant, the instrument can be powered by an AC purification power supply. The capacity of the AC purification power supply should be greater than 200VA.

5. When the instrument is working, if there is disorder in the LCD screen display, no response when pressing all buttons, or if the measured value is far from the actual value, please press the "reset" button, or turn off the power, and then operate again.

6. If there are no characters displayed on the LCD screen or the colors are very light, adjust the brightness potentiometer to the appropriate position.

Test Transformer Ratio Tester