For the grounding of the central control DCS, it is not necessary to use the protective ground wire of the power supply
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Is it correct to connect the grounding, protective ground, and working ground of the DCS to the protective ground of the power supply? The following three methods: Using the electrical grounding grid as the DCS grounding grid, that is, sharing the same ground connection with the electrical grounding grid ； Provide a dedicated and independent grounding grid for the DCS system ； A dedicated grounding grid for the DCS is provided, which is connected to the electrical grounding grid via grounding wires ； Who can explain it in detail? The company has a solution: the central DCS system is grounded using one copper plate for the protective ground, another copper plate for the working ground, and another plate for combining these connections; all of these are then connected to the equipotential ground. Is this equipotential ground the electrical grounding network? Which of the above three categories does my case fall into? I don’t know what a DCS independent grounding grid is, so I’m unaware.
They can be connected together, but there must be two grounding buses, which should be connected to the grounding system at two different points; moreover, the grounding resistance should be below 4 ohms. In other words, the grounding bus must form a ring network.
Yes, but the grounding busbars must be separate and eventually connected to a single main grounding busbar; the grounding requirements must be met, with a grounding resistance of less than 4 ohms