Safety Instructions for Power Tools
source：Dongguan Sudong Electronic Technology Co.,Ltd release time：2017-06-03 Browse：640
1,Mobile electric machinery and hand-held power tools, single-phase power
cord must use three-core soft rubber cable, three-phase power cord must
use four-core rubber cable; wiring, cable jacket should be inserted
into the device box To be fixed.
2, The use of power tools should check the following:
(1) Shell, handle without cracks, no damage;
(2) To protect the ground wire or then connected to the correct line, solid;
(3) Cable or cord is good;
(4) The plug is intact;
(5) Switch action normal, flexible, no defect;
(6) Electrical protection device intact;
(7) Mechanical protection device intact;
(8) The rotating part is flexible.
3, The insulation resistance of power tools should be measured
regularly with 500V megger, such as live parts and shell insulation
resistance between the value of less than 2MΩ, must be repaired.
4, The electric part of the electric tool after maintenance, must be
insulated resistance measurement and insulation withstand voltage test,
the test voltage of 380V, the test time of 1 minute.
5, Electrical machinery and tools to connect the electrical circuit
should be set up a separate switch or socket, and install leakage
current protection device, the metal shell should be grounded;
6, The current leakage protection device rated leakage current shall
not be greater than 30mA, the action time shall not be greater than 0.1
seconds; voltage leakage protection device rated leakage voltage shall
not be greater than 36V.
7, The operation of the motor switch should be placed in the operator reach the site. When the rest, get off work or work in a sudden power outage, should cut off the power side switch.
8, The use of portable or mobile power tools, you must wear insulated
gloves or standing on the insulation pad; move the tool, not to mention
the wire or the rotating part of the tool.
9,In the wet or contain acid sites and metal containers in the use of
Class III insulated power tools, you must take a reliable insulation
measures and hand care. The switch of the power tool should be located at the guardian's reach.
10, Magnetic suction cup drill plate should be flat, clean, no rust,
side drilling or drilling, should be taken to prevent loss of power
after the fall of the body of the measures.
11, The use of electric wrenches, the counter-torque should be firmly on the fulcrum and really buckle the nut before the start.