Leakage protection device operation and maintenance - Solutions - Huaqiang Electronic Network

SR05 SOT143 package 5V ESD electrostatic protection

Since the leakage protector is an important electrical product related to personal safety, it is necessary to do the operation and maintenance work in accordance with the national regulations on the operation of the leakage protector in daily work, and find problems in a timely manner.

1 After the leakage protector is put into operation, a general survey shall be conducted on the protection system every year. The key items of the census are: testing whether the leakage current value meets the requirements; measuring the insulation resistance of the grid and equipment; measuring the neutral point leakage current, eliminating the grid Various leakage hazards; check the transformer and motor grounding device for looseness and poor contact.

2 The electrician shall test the tester with the tester at least once a month. When the lightning strike or other reasons cause the protection action, a test shall be made. The number of trials is increased during the thunderstorm season. The deactivated protector should be tested once before use.

3 After the protector is activated, if the accident point is not detected, the test is allowed to be sent once. If you act again, you should find out the cause, find out the fault, and do not continuously send power.

4 It is strictly forbidden to remove the protector or force the power transmission.

5 The leakage protector should be replaced in time after failure and repaired by a professional.

6 In the event of personal electric shock and casualty accidents in the protection area, the action of the protector should be checked, and the reasons for the failure to protect the function should be analyzed. The site should be protected before the investigation, and the protector should not be modified.