Workers (operators) wearing synthetic clothing and moving around easily generate static discharge. Additionally, the movement of packaging products or周转 equipment and friction, mixing in high-temperature rooms with air 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 from static electricity are also 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, and for production processes that are prone to static electricity as well. 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 flows, and the higher the level (or safer) of the equipment (or grade) that can be protected. Moreover, good grounding can effectively reduce static noise in computer systems caused by potential variations.

Types of grounding: including working grounding, protective grounding, anti-static grounding, lightning protection grounding, repeated grounding, equipotential grounding, shielding grounding, signal grounding for electronic equipment, power grounding for electronic equipment, etc.

In accordance with 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 area: ≤4Ω

Safety Protection Resistance: ≤4Ω

Static Dissipative Grounding: ≤4Ω

Lightning Protection and Grounding: ≤10Ω

Manufacturers or laboratories can choose the 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 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 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 Anti-Static 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, and recommending the appropriate resistance value standard. Welcome manufacturers and companies to consult and place orders. Thank you!