Grading of HBM (ANSI/ESDSTM5.1-2001)
Sensitive Category Voltage Range (V)
0 <250
1A 250 to <500
1B 500 to <1000
1C 1000 to <2000
2 2000 to <4000
3A 4000～＜8000
3B ≥8000
Grading of MM
Sensitive category voltage range (V)
M1 <100
M2 100～＜200
M3 200～＜400
M4 ≥400
Grading of CDM
Sensitive Category Voltage Range (V)
C1 <125
C2 125 to <250
C3 250 to <500
C4 500 to <1000
C5 1000 to <1500
C6 1500 to < 2000
C7 ≥2000
There are three main human anti-static: anti-static clothing, anti-static shoes, anti-static wristbands.
Anti-static shoes and anti-static wristbands are the role of the human body static electricity to avoid accumulation in the human body.
Ordinary clothes produce a large static voltage (>1000V) when walking. And antistatic clothing does not happen when walking around. This is the main role of anti-static clothing.
The long strips of anti-static clothing can not shield the static electricity generated by the clothes inside (still >1000V after wearing).
The mesh type of anti-static clothing can be shielded (<200V).
The generated static electricity is led through the conductive floor and the grounding wires at each location to the main grounding wire outside the plant.
Can be divided into preventing the generation of static electricity and preventing static damage.
Electrostatic protection is a long-term systematic project, any errors or omissions will lead to the failure of electrostatic protection.
The production process of electrostatic protection of the main measures for electrostatic leakage, dissipation, neutralization, humidification, shielding and grounding.
The human body electrostatic protection system is mainly composed of anti-static wristbands, ankle bands, overalls, shoes, socks, hats, gloves or finger cots, etc., which have the functions of electrostatic leakage, neutralization and shielding, etc.
The ground level is the most suitable place for the protection of human body against static electricity.
The ground antistatic treatment mainly has antistatic ceramic steel-based composite floor, antistatic all-steel movable floor, antistatic porcelain floor tiles and so on.
Extended information:
Personal static eliminator mainly refers to the contact personal static eliminator and automatic induction personal static eliminator.
Contact static eliminator:
Contact handheld personal static eliminator is a handheld device to contact the metal object to remove the static electricity on the human body or metal objects. But this is only temporary. In life static electricity is generated every moment. After a period of time of using the contact personal static eliminator, our body will again have a feeling of electric shock when touching static objects/metal conductors. Therefore, when we use the product, we should finish what we want to finish as soon as possible.
Automatic inductive static eliminator:
Automatic personal static eliminator is a device that automatically detects static electricity in the surrounding environment, and then automatically eliminates the static electricity in the surrounding environment. We don't need any operation. The most important features of this fully automatic static eliminator keychain are exquisite craftsmanship, anti-static load up to 40,000 volts, and the ability to continuously eliminate static electricity.
Reference:
Baidu Encyclopedia--Anti-static