Hello everyone, welcome to the Xingyi class, in this issue, let’s talk about what is grounding resistance. Grounding resistance: It is the resistance encountered when the current flows into the earth from the grounding device and then flows through the earth to another grounding body or spreads to a distance. The grounding resistance value reflects the good degree of contact between the electrical installation and the “ground” and reflects the scale of the grounding grid. Effective Ground Resistance Value: 1. The grounding resistance of independent lightning protection should be less than or equal to 10 ohms; 2. The grounding resistance of independent safety protection should be less than or equal to 4 ohms; 3. The independent AC working grounding resistance should be less than or equal to 4 ohms; 4. The independent DC working grounding resistance should be less than or equal to 4 ohms; 5. The common grounding body (joint grounding) should not be greater than the grounding resistance of 1 ohm. Joint grounding: It is to make the basic grounding body of each building in the bureau (station) and other special grounding bodies communicate with each other to form a common land network, and the working grounding, protective grounding, logical grounding, shielding grounding, anti-static grounding and building of electronic equipment Physical lightning protection and grounding share a group of grounding system grounding methods Our company generally uses φ5 and 7.5 shielded cables, and the resistance value of the shielding layer is ≤ 0.03Ω per meter. Star Meter Manufacturing Co., Ltd. is a high-tech enterprise integrating R&D, production and sales. Specializing in the production of pressure transmitters, liquid level transmitters, temperature transmitters, temperature and humidity transmitters, differential pressure transmitters, soil moisture transmitters, 3051 transmitters and related instrumentation accessories. A number of products under the Xingyi brand have obtained a number of patent certificates issued by the state, such as CE certification, IS9001 certification, SGS certification, TüV SüD certification, explosion-proof certification, etc. If you have any questions about product consultation, product customization, agency, technical inquiry, quotation, etc., please contact Xingyi: 400-600-4496!