What principles should be followed for electrostatic protection?
There are various kinds of static protection products, such as anti-static liquid, anti-static hand cream, anti-static clothing, anti-static bracelet, anti-static mat and so on. Thousands of types, corresponding to different objects in different industries, have corresponding static protection products. Everything has its own principles, so what principles should the electrostatic protection products follow?
Two very important points: First, static electricity protection is applied to objects that may generate static electricity to suppress the accumulation of static charges. Second, antistatic treatment of objects that have generated static electricity is quickly, safely and effectively eliminated. The static charge generated.
Electrostatic protection is more about precautions against objects that may generate static electricity. For example, the anti-static treatment of the work area:
1. Ground material
a. It is forbidden to directly use wooden floors or lay wool, linen, chemical fiber carpets and ordinary floor leather.
b. The ground made of electrostatic conductor material, such as anti-static raised floor or anti-static mat on ordinary ground, should be selected and effectively grounded.
c. It is allowed to use specially treated terrazzo floor, such as laying ground wire, carburizing or spraying antistatic agent on the ground.
2, ground
a. The anti-static system must have an independent and reliable grounding device. The grounding resistance should be less than 10Ω. The embedding and testing methods should meet the requirements of GBJ97.
b. The anti-static ground wire shall not be connected to the power supply neutral line and shall not be shared with the lightning protection ground wire.
c. Use three-phase five-wire system to supply power, and its ground wire can be used as anti-static ground wire (but the neutral wire and ground wire must not be mixed).
d. The cross-sectional area of the grounding main line shall not be less than 100mm2; the cross-sectional area of the trunk line shall be not less than 6mm2; the grounding line of equipment and workbench shall be a multi-strand plastic coated wire with a cross-sectional area of not less than 1.25mm2, and the color of the grounding wire shall be yellow-green It is appropriate.
e. The connection method of the grounding main line should be brazed.
f. Anti-static equipment connection terminals should ensure reliable contact, easy to install and disassemble, and allow the use of various clip-on connectors, such as squid clips and plug sockets.