Employees (operators) wearing synthetic clothing and moving around easily generate static discharge. Additionally, the friction, stirring, and movement of packaging products or周转 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 cause computer systems to malfunction. The sparks produced by static electricity are sufficient to ignite and explode flammable and explosive gases such as natural gas, oil, and alcohol. Therefore, proper grounding is required for equipment, containers, and pipelines that are prone to static electricity generation, as well as for production processes that are prone to static electricity. Grounding refers to the electrical connection between a specific point in a system, device, or equipment and the local ground (earth). Therefore, the smaller the resistance, the faster the current flows, and the higher the level (or safer) of equipment (or grade) that can be protected. Furthermore, good grounding can effectively reduce static noise in computer systems caused by potential variations.

Types of grounding: including working grounding, protective grounding, static electricity grounding, lightning protection grounding, multiple grounding, equipotential grounding, shielding 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 divided into three grades:

        ①.≤1Ω; ②.≤4Ω; ③.≤10Ω; 

General Requirements:

Communication working ground: ≤4Ω

Safety Protection: ≤4Ω

Anti-static grounding: ≤4Ω

Lightning Protection and Grounding: ≤10Ω

Factories or laboratories can choose their 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 it should be ≤4Ω if all equipment needs to be connected), for example, in chemical factories (manufacturing 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 of 100 grade or above, electronic components with withstand voltage not exceeding 100V), the ground resistance value should be required to be ≤4Ω or higher.

Guangzhou Liying Anti-Static Technology Co., Ltd. has many years of experience in the construction and renovation of static grounding and indoor wiring systems. We have professional technical personnel and construction teams that can provide technical references based on your production or safety environment, and recommend the appropriate resistance value standard. Welcome all manufacturers and companies to consult and place orders. Thank you!