Employees (operators) wearing synthetic clothing and moving around can easily generate static discharge. Similarly, the movement of packaging products or周转 equipment and the friction, stirring in high-temperature rooms can also produce static electricity. The static electricity generated can easily cause electronic components to break down and burn, affect the accuracy of testing equipment, and lead to chaos in computer systems. The sparks from static electricity are also 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, as well as for production processes that are prone to static. Grounding refers to the electrical connection between a specific point in a system, device, or equipment and the local ground (earth). Thus, the smaller the resistance, the faster the current flow, and the higher the level (or safer) of the equipment (or class) that can be protected. Additionally, good grounding can effectively reduce static noise in computer systems caused by potential fluctuations.

Types of grounding: Working Grounding, Protective Grounding, Static Dissipative Grounding, Lightning Protection Grounding, Multiple Grounding, Isolated 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 (earth resistance values) are categorized into three grades:

        ①.≤1Ω; ②.≤4Ω; ③.≤10Ω; 

General Requirements:

Communication Worksite: ≤4Ω

Safety Protection Resistance: ≤4Ω

Static Dissipative Grounding: ≤4Ω

Lightning Protection and Grounding: ≤10Ω

Factories or laboratories can select their appropriate ground resistance value based on their specific 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 producing and processing 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-level, electronic components with withstand voltage 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 staff and construction teams, ready to provide technical references based on your production or safety environment, and recommend the appropriate resistance value for the standard grade. Welcome manufacturers and companies to inquire and place orders. Thank you!