Specifications for the use of electronic wiring/field substation boxes in the chemical industry
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Now, many system manufacturers offer electronic wiring solutions that involve placing substations on-site, using smart IO modules and allowing for the customization of channel types; this results in significant savings in terms of both cables and installation costs. I think it’s a great approach. I would like to ask friends who have used it the following questions in two aspects: 1. Will the regulatory authorities conduct inspections regarding compliance? Will there be any objections to the layout of the wiring cabinets on site? 2. What are the disadvantages in terms of usage?
A broken fiber optic cable results in losses of millions, and it can also lead to safety accidents.
According to you, it’s also possible for the cable to break. Moreover, optical fibers are usually designed with dual redundancy. .
1. Opening the cabinets on-site is equivalent to performing hot work； 2. Outdoor cabinets require consideration for heat dissipation in extreme climates ； 3. Expert question: There are management regulations for each area; consult experts from the Emergency Management Department in advance
There are hundreds of cables, each going individually to the cabinet. There are only two optical fibers; if each module box is connected to the same switch, then there will also be two fibers in the cabinet. It’s not that it’s not possible or not good; it’s just that, compared to cables, its safety level is somewhat lower. However, provincial cables are very cost-effective.