Electrostatic protection still needs to do a good job in the analysis of the detection parameters
The electrostatic phenomenon is the general term for the electric phenomenon produced in the process of the generation and disappearance of electric charge.
Static electricity has the following characteristics:
1. From the perspective of electrostatic hazards, when the resistivity of the material exceeds 1*10^10Ω. At m, the ability of the material to dissipate static electricity is significantly weakened. From the perspective of eliminating static electricity, the volume resistivity of the material should not be higher than 10^10Ω. m.
2. In general industrial production, static electricity has the characteristics of high potential, low power, small current and short action time. The static electricity potential on the equipment or human body can reach tens of thousands of volts or even tens of millions of volts; it is also common under normal operating conditions. Up to hundreds to thousands of volts; this is much higher than the city's low-voltage 220V and 380V. But the amount of accumulated static electricity is very low, usually nanocoulombs; the electrostatic current is mostly microampere; the action time is mostly microseconds
Compared with galvanic electricity, static electricity is more affected by environmental conditions, especially humidity; the reproducibility of static electricity measurement is poor, and there are more transient phenomena.
3. The static electricity generated during the production process can make human hair stand upright, but cannot directly kill people; the human body in an insulated state can sometimes discharge with other objects, causing people to suffer electric shocks (even causing explosions or fires); After the process of generating static electricity is stopped, static electricity disasters and so on may still occur. These unconventional phenomena from the galvanic point of view are determined by the characteristics of static electricity and the characteristics of materials related to static electricity.
The purpose of electrostatic measurement:
A. Provide data and basis for the design of electrostatic protection engineering and the design of improving the antistatic performance of the product itself
B. Under actual operating conditions, determine whether the human body, equipment, tooling, etc. may become a source of electrostatic discharge hazards
C. Test the performance and quality of electrostatic protection equipment (appliances, tools, equipment, materials)
D. Evaluate the effect of electrostatic protection measures
E. Perform simulation tests after the occurrence of electrostatic discharge hazards, analyze the cause of the accident, and provide a basis for taking targeted measures
F. Evaluate the design and manufacturing quality of electrostatic sensitive electronic products
From the above measurement range, in the measurement process, high-precision and good-quality static electricity detection instruments can still understand the static electricity problems in the working environment.