The application of hand-held electric tools is also very common in the construction site. Many mechanical injuries occur due to the improper operation of hand-held power tools. How to use hand held power tools correctly and safely?
First, the general place where the air humidity is less than 75% can choose 1 or 2 types of hand-held electric tools, and the metal and PE line connection points are many 2 places.
Second, in addition to the material 売 tools, rated leakage current action of the electric leakage protector in the related switch box should not be greater than 15 ma, rated leakage action time should not be more than 0.1 s.
Third, the load line plug should be protected. The socket and plug used should be consistent in structure to avoid the mixing of conductive plug and protective plug.
Fourth, when operating on the gold wind rack in wet places, it is strictly prohibited to use Class 1 hand-held electric power. Class 2 or Class 3 hand-held electric power tools powered by safety isolation transformer must be used.
Fifth, the switch box and control box used by metal-shell Class Ⅱ hand-held electric tools should be set outside the workplace.
Sixth, in the boiler, metal container, gutter or pipeline medium narrow place must choose the safety isolation transformer of the three types of hand-held electric tools, the switch box and safety isolation transformer should be set outside the narrow place, and connected with the PE line. Switch box should be equipped with anti-splash leakage protector, and meet the requirements of the code. During the operation, there should be outside supervision.
Seventh, the load line of hand-held electric tools should be climate-resistant rubber sheathed copper core, and there should be no joint.
Eighth, hand-held electric tools outside 売, handle, plugs, switches, load line must be intact, and must be done before use off like check and no-load check, qualified in insulation and no-load running normal rear can use.
Ninth, when using handheld power tools, be sure to wear good insulation protective equipment.
Tenth. Safety protection devices of hand-held electric tools are strictly forbidden to be used after removal.