Installation rules for electrical control leakage protection switch - News - Global IC Trade Starts Here Free Products

SR05 SOT143 package 5V ESD electrostatic protection

Probe domestic switch needle KG-300K needle head diameter is 3.0mm normally open switch needle

1, 220kV, 110kV, 35kV, main transformer part, power supply maintenance power box, temporary power supply box, mobile switchboard, socket, etc. should be installed with leakage protection switch.
2. The electric frying pan and rice cooker used in the living room should be equipped with a leakage protection switch.
3. It is preferred to use a leakage protector with a rated leakage current of no more than 30 mA.
4. In order to reduce the leakage protector that is installed in stages to reduce the power failure caused by the personal electric shock and grounding fault, the rated leakage current and the operating time of the leakage protectors of all levels should be coordinated.
5. The leakage protector installed at the power supply end should adopt a low-sensitivity delay type leakage protector.
6. The technical conditions of the selected leakage protector shall comply with the relevant provisions of GB6829 and have the national certification mark. The technical rating shall be matched with the technical parameters of the protected line or equipment.
7. When working on metal objects, when operating hand-held power tools or running lights, the leakage protector with rated leakage current of 10mA and fast action should be selected.
8. The installation of the leakage protector should meet the requirements of the manufacturer's product manual.
9. The installation of the leakage protector should fully consider the power supply line, power supply mode, power supply voltage and system grounding type.
10. The rated voltage, rated current, short-circuit breaking capacity, rated leakage current and breaking time of the leakage protector shall meet the requirements of the protected power supply line and electrical equipment.
11. The installation and wiring of the leakage protector should be correct. After installation, the test button should be operated to verify the working characteristics of the leakage protector, and it is allowed to be put into use after confirming the normal operation.
12. Inspection items after installation of leakage protector:
a. Test 3 times with the test button, it should operate correctly;
b. With the load split switch 3 times, there should be no malfunction.
13. The installation of the leakage protector must be carried out by an electrician qualified for technical training.