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Domain Knowledge

workplace leakage

If the workplace is not able to get out of the power supply in a timely manner with the help of other people, the operating current of the leakage protection device should not exceed the current. In case of serious secondary accidents after electric shock, quick leakage protection device with 6mA operating current shall be used. In order to protect children or patients, fast leakage protection devices with an operating current of 10 mA or less should also be used. For Type I hand-held power tools, quick-type leakage protection devices with an operating current of 10 to 30mA should be installed depending on the degree of danger in the workplace. Selecting the operating current should also consider the possibility of malfunction. The protector should be able to avoid the unbalanced leakage current of the line without action; it should also be able to operate without erroneous electromagnetic interference in the installation position. Selecting the operating current should also take into account the actual conditions for the manufacture of the protector.

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