Employees (operators) wearing synthetic clothing and walking are prone to static discharge. Additionally, static can be generated through friction and turbulence between packaging products, handling equipment, and air in high-temperature rooms. This static can easily damage electronic components, affect the accuracy of detection equipment, and cause computer systems to malfunction. Static sparks can also ignite and explode flammable gases like natural gas, oil, and alcohol. Therefore, equipment, containers, and pipelines that are prone to static must be properly grounded, as well as production processes that generate static. Grounding refers to the electrical connection between a specific point in a system, device, or equipment and the local earth (ground). Thus, the lower the resistance, the faster the current flows, and the higher the level (or safer) of protection for the equipment (or grade). Moreover, good grounding can effectively reduce static noise in computer systems caused by potential variations.

Types of grounding: including working grounding, protective grounding, static dissipative 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 (ground resistance values) are divided into three categories.

        ①.≤1Ω; ②.≤4Ω; ③.≤10Ω; 

General Requirements:

Communication working ground: ≤4Ω

Safety Protection Resistance: ≤4Ω

Anti-static grounding: ≤4Ω

Lightning Protection and Grounding: ≤10Ω

Factories or laboratories can select the appropriate grounding resistance value according to their own environmental requirements.

Recommendation: For general factories, the ground resistance value can be required to be ≤10Ω (but it should be ≤4Ω when all equipment is connected), such as in chemical factories (manufacturing hazardous chemicals) and factories producing and processing flammable and explosive gases, where the ground resistance value should be required to be ≤4Ω or higher. For electronic factories, semiconductor factories, inspection laboratories, and computer systems (cleanroom grade 100 or above, with electronic components 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 extensive experience in the construction and renovation of static grounding and indoor wiring systems. We have professional technical staff and construction teams that can provide technical references based on your production or safety environment, and recommend the appropriate resistance value for the standard level. Welcome manufacturers and companies to consult and place orders. Thank you!