Power workers need to perform the transformation ratio group test of power transformers during work, so they need to use a transformer transformation ratio group tester, but in work, this kind of equipment is a precision equipment, and you need to pay attention to it during use. There are many problems. This article takes the transformer ratio group tester as an example to give you a brief introduction to the problems that the transformer ratio group tester pays attention to.

1. The overcurrent insurance is 0.5A. 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, the buzzer inside the instrument will sound an alarm. Please turn off the machine, replace the insurance with the same capacity, and retest.

2. Keep the connection in good contact. The instrument should be well grounded!

3. The working place of the instrument 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 cable should be used. If the power supply interference is still large, the instrument can be powered by the AC purification power supply. The capacity of the AC purification power supply is greater than 200VA.

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

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

6. The instrument should be stored in a dry and ventilated place. If it is not used for a long time or the environment is humid, the preheating time should be extended before use to remove moisture.

7. Use when debugging the communication port.

The transformer ratio group tester is a relatively high-precision test equipment. In the process of use, there are many problems that need to be paid attention to. Power workers take good care of the equipment and conduct the test in accordance with the requirements of the manual.