Precautions for Operation of Transformer Ratio Tester

1. During the measurement, the person should not touch the test object.
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 the measurement is performed, it will stop after displaying "Measuring, please wait!". Please shut down, replace the fuse with the same capacity, and retest.
3. The connection should be protected and in good contact. The instrument should be well grounded!
4. The workplace of the instrument should be far away from strong electric fields, strong magnetic fields, and high-frequency equipment. The smaller the interference of the power supply, the better. It is advisable to use the lighting line. If the power interference is still large, it can be charged by the AC purification power line. The capacity of the AC purification power supply is greater than 200VA.
5. When the instrument is working, if the liquid crystal display is disordered, 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.
6. If the display has no character display, or the color is very light, please adjust the brightness potentiometer to a suitable position.
7. When working in a dark place, you can turn on the backlight. In order to reduce the power consumption of the display, the backlight is not very bright.
8. The instrument should be stored in a dry and ventilated place.