详情描述

Employees (operators) wearing synthetic clothing and moving around easily generate static discharges. Additionally, the friction, mixing, and movement of packaging products or handling equipment, as well as the air in high-temperature rooms, can also produce static electricity. This static 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 pipes 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 flows, and the higher the level of protection (or safety) for the equipment (or rating). Moreover, good grounding can effectively reduce static noise in computer systems caused by potential changes.

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 (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 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 should be ≤4Ω if all equipment is to be connected); for example, in chemical factories (manufacturing hazardous chemicals) and factories producing 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 (cleanroom grade 100 or above, with voltage ratings for electronic components not exceeding 100V), the ground resistance value should be required to be ≤4Ω or higher.

Guangzhou LiXiang Antistatic Technology Co., Ltd. has many years of 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 grade. Welcome all manufacturers and companies to consult and place orders, thank you!