In the field test of the circuit breaker tester, in order to ensure the accuracy of the test and the safety of the field testers, the editor will explain to you the precautions for the field test of the circuit breaker tester:

1. Only qualified technicians can perform maintenance to prevent fire or personal injury.

2. Use an appropriate power cord. Only use the power cord that is dedicated to the product and meets the specifications of the product.

3. Connect and disconnect correctly. When the test lead is connected to the live terminal, please do not connect or disconnect the test lead at will.

4. The product is grounded. In addition to the grounding of the product through the grounding wire of the power cord, the grounding pole of the product shell must be grounded. To prevent electric shock, the grounding conductor must be connected to the ground. Before connecting to the input or output terminal of the product, make sure that the product is properly grounded.

5. Pay attention to the ratings of all terminals. To prevent the risk of fire or electric shock, please pay attention to all ratings and markings of the product. Before connecting the product, please read the product manual for further information about the rated value.

6. Do not operate without the instrument cover. If the cover or panel has been removed, do not operate the product.

7. Use an appropriate fuse. Only use fuses that meet the specified type and rating of the product.

8. Avoid contact with exposed circuits and charged metals. When the product is powered on, do not touch the bare contacts and parts.

9. Do not operate when there is a suspicious failure. If you suspect that the product is damaged, please check it by maintenance personnel and do not continue to operate it.

10. After the test is over, wait until the discharge is completed before removing the test line.

Daily maintenance of circuit breaker tester:

The circuit breaker tester is a precision and valuable device. Please keep it in a safe place when using it to prevent heavy falls and impacts. When used outdoors, operate under shade as much as possible to avoid direct exposure of the LCD screen to the sun for a long time. 2. When the instrument is not in use, it should be stored at a temperature of -10~40. C. The relative humidity does not exceed 80%, and the room is ventilated and non-corrosive. In the wet season, if it is not used for a long period of time, power on once a month for about 1 hour each time.