The automatic variable ratio group tester is based on the single-chip microcomputer for measurement calculation and automatic control. It has a full Chinese menu operation interface. It has the advantages of intuitive display, good stability, high accuracy, wide measurement range and no need for three-phase power on site. A new generation of intelligent transformation ratio test equipment.

Precautions for using the automatic transformation ratio group tester:

1. Don't touch the test product when using the automatic transformation ratio group tester to measure.

2. If the test line is short-circuited and the high and low voltage connections are reversed, the insurance will be blown. After the fuse is blown, if the measurement is performed, it displays "Measuring, please wait!" and then stops, please turn off the fuse, replace the fuse with the same capacity, and retest.

3. Keep the wiring in good contact, and the instrument should be well grounded!

4. The working place of the automatic transformation ratio group tester should be far away from strong electric field, strong magnetic field, and high-frequency equipment. The smaller the power supply interference, the better, and the lighting line should be used. If the power interference is still large, the instrument can be powered by the AC purification power supply. The capacity of the AC purification power supply is more than 200VA.

5. When the automatic transformation ratio group tester is working, if the LCD screen display is disordered, pressing all the buttons has no response, or the measured value is very different from the actual value, please press the reset button, or turn off the power, and then operate again .

6. If the display has no character display or the color is very light, please adjust the brightness potentiometer to the appropriate position.

7. The automatic transformation ratio group tester should be stored in a dry and ventilated place.