How to ground a control system? Preferably in detail!
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How should the control system be grounded? A detailed explanation would be great! I hope experts can give some guidance!
For detailed grounding requirements, please refer to the following standard: HGT 20513-2000; Instrumentation System Grounding Design Specifications.pdf； SHT 3521-2007 Technical Specifications for the Construction of Petrochemical Instrumentation Projects.pdf
Reply to 2# Xue Er Piao Piao: Could you send me your email address? acbcxhy@126.com. Thank you!
Reply to 1# Xiao Huyang: The control system grounding includes protective grounding, working grounding, and system grounding. Both protection grounding and working grounding are covered by relevant specifications. System grounding is determined based on the specific conditions of each manufacturer; generally, during the setup of the DCS, it is the DCS manufacturer who decides whether system grounding is necessary, and if so, the electrical engineering team handles the installation of the grounding busbars and similar components.
Search online and you’ll find many options; each type has specific requirements regarding the diameter of the grounding wires. In general, single-point grounding is required, and the grounding resistance should be measured before the system is powered on – DCS systems require a resistance of less than 4 ohms, while PLC systems require it to be less than 1 ohm.