How should instrument busways be grounded, and what are the specific grounding methods? ? ? ?
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During the construction of the cable tray by Party A, they asked me how to ground the instrument cable tray and what the specific grounding method was ? ? ?
Refer to \"HG_T20513-2014 Specifications for Grounding Design of Instrument Systems\"; it is available for download on the forum.
The instrument tray doesn’t need to be grounded, right? We haven’t connected it. Only the electrical part needs to be connected, as there is high voltage involved.
Grounding is required, and it must be done every 30 meters or by connecting to a metal component that is already properly grounded. At the same time, equipotential grounding must be ensured. Since the cable tray is meant to shield against interference, it itself must not generate any interference
This post was last edited by zxb1990 on 2015-7-5 at 15:54. I have seen wires being laid along cable trays; I didn’t really pay attention to where exactly they went. One more question: these days, thick copper wires are often used for grounding purposes, rather than the flat steel strips that were used in the past, especially for grounding in instrumentation systems. I would like to ask whether, aside from having greater corrosion resistance compared to flat steel strips, thick copper wires also result in a lower grounding resistance
Electrical systems generally use flat steel for grounding, while instruments typically use thick copper wires, as instrument specifications do not specify that flat steel can be used for grounding. As for the contact resistance, it needs to be calculated based on the dimensions of the grounding wire or flat steel.
The cable tray is equipped with dedicated electrical contacts for grounding connections; series connection is sufficient, and the selection of the grounding terminals follows the standards of various industries