Principles of human anti-static equipment
First, the human body grounding:
1. Standing state through anti-static shoes, foot straps through the anti-static floor to access the grounding system
2, sitting posture through the wrist strap, through the common grounding point to access the grounding system
Second, shielding: anti-static clothing, anti-static hats, etc.;
Anti-static work clothes: 1, can play a shielding role to prevent the production of static electricity field;
2, through the contact with the body, the static electricity through the human body - wrist strap - anti-static shoes vent to the earth;
3, technical requirements of anti-static clothing: A, the cloth sheets are mutually conductive; B, effective contact with the human body; C, covering the internal clothing; D, the electrical conductivity of the fabric.
Anti-static wrist strap: 1, built-in 1 megohm safety resistor, 2, full contact with the human body, 3, break free of safety, 3, outer insulation resistance to breakdown,
4, convenient grounding, 4, easy to detect.
Anti-static shoes: 1, good insole and sole, 2, to ensure the connection of shoes - floor ground, 3, the friction voltage is small enough, 4, anti-static type: anti-static shoes, overshoes, 5, when there are visitors Substitutes for anti-static shoes: foot straps, anti-static shoe covers.