Employees (operators) wearing synthetic clothing and moving around can easily generate static discharge. Additionally, friction, stirring, and movement of packaging products or handling equipment, as well as air movement in high-temperature rooms, can also produce static electricity. The static electricity can easily cause electronic components to break down and burn, affecting the accuracy of detection equipment and instruments, and can also disrupt computer systems. The sparks generated by static electricity are sufficient to ignite and explode flammable and explosive gases like natural gas, oil, and alcohol. Therefore, proper grounding is essential for equipment, containers, and pipelines prone to static electricity generation. Grounding refers to the electrical connection between a specific point in a system, device, or equipment and the local ground (earth). Thus, the lower the resistance, the faster the current flow, and the higher the level (or safer) of equipment (or grade) that can be protected. Moreover, good grounding can effectively reduce static noise in computer systems caused by potential changes.

Types of grounding: Working Grounding, Protective Grounding, Anti-Static Grounding, Lightning Protection Grounding, Repeated Grounding, Isopotential Grounding, Shielded Grounding, Signal Grounding for Electronic Equipment, Power Grounding for Electronic Equipment, etc.

Based on international and domestic standards, the static grounding resistance values (ground resistance values) are categorized into three grades:

        ①.≤1Ω; ②.≤4Ω; ③.≤10Ω; 

General Requirements:

Communication Worksite: ≤4Ω

Safety Protection Resistance: ≤4Ω

Anti-static grounding: ≤4Ω

Lightning Protection Grounding: ≤10Ω

Factories or laboratories can select the appropriate grounding resistance value based on their own environmental requirements.

Recommendation: The ground resistance value for general factories can be required to be ≤10Ω (but if all equipment needs to be connected, the ground resistance value should be ≤4Ω). For example, in chemical factories (factories producing hazardous chemicals) and factories that produce and process flammable and explosive gases, the ground resistance value should be required to be ≤4Ω or higher. For electronic factories, semiconductor factories, inspection laboratories, and computer systems (cleanrooms above 100级, with electronic components having withstand voltages not exceeding 100V), the ground resistance value should be required to be ≤4Ω or higher.

Guangzhou LiXiang Antistatic Technology Co., Ltd. has years of experience in the construction and renovation of static grounding and indoor wiring systems. We have professional technical personnel and construction teams, capable of providing technical references based on your production or safety environment. We can also recommend the appropriate resistance value at the corresponding standard level. Welcome manufacturers and companies to inquire and place orders. Thank you!