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How to choose the leakage protector reasonably

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How to choose the leakage protector reasonably

How to choose the leakage protector reasonably.

 

The leakage protector is also called the leakage protection switch. It is the most frequently encountered electrical component during electrician maintenance. How to correctly and reasonably select the rated leakage current of the leakage protector is very important. When the electric shock or leakage current exceeds the allowable value when using the electric appliance, the leakage protector can disconnect the faulty power supply to ensure the safety of the human body; on the other hand, the leakage protector should not act within the normal leakage current range to prevent the power interruption. Affect our normal use.

 

The rated leakage current of the leakage protector should not exceed the safe current value of the human body (according to internationally, 30ma is the safe current value of the human body); to ensure the reliable operation of the power grid, the rated leakage current should avoid the normal leakage current of the low voltage grid and reduce the leakage protection. The device's malfunction; the rated leakage current of the next stage of the leakage protector should be less than the rated leakage current of the previous stage. If the leakage protector does not work properly or there is a leakage in the electrical circuit, you must find a professional electrician to go to the circuit for a maintenance inspection. After the test is normal, you can continue to use it.

 

Leakage protector rated leakage current should be selected according to different conditions of use and electrical appliances, generally should be selected according to the following values:

 

1. Portable power equipment is 15ma.

2. Prevent electrical fires from being 300ma.

3. The household appliance circuit is 30ma.

4. The set of switch cabinets and switchboards are not less than 100ma.

5. The medical electrical equipment is 6ma.

6. The electrical equipment used in the construction site is 15~30ma.

7. Electrical equipment (such as aerial work, underwater operations, bathrooms, etc.) in harsh or wet places is 6 to 10 ma.

 

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Pub Time : 2019-09-04 09:23:16 >> News list
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