Can the instrument cables and optical fibers be placed in the same cable tray?
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Can the instrument cables and optical fibers be placed in the same cable tray? Due to site constraints, it is not possible to install instrument cable trays; we would like to use the electrical cable trays instead. There are only 3 optical cables in those trays, and we were wondering if it would be possible to use them The instrument model operates at 24VDC voltage and uses a 4–20mA DC two-wire cable. Are there any standards or guidelines regarding this, or what is the basis for it?
In terms of usage, it should work fine; there is no interference between the two. Specific specifications are awaited.
The fiber optic cable is fine, but the instrument cable isn’t.
We have had such situations on-site, and there’s no problem with that
It should be possible; proper labeling is necessary.
One of the biggest advantages of optical cables is that they are not affected by electromagnetic interference, and they also do not generate such interference. So, in theory, it is possible to place it in the same cable tray as the power cable. However, generally speaking, for the sake of ease of maintenance and construction, it is not laid together with cables of higher voltage levels.
Got it!! ! ! Thank you to everyone upstairs for their replies.
Instrument signals are generally DC and relatively weak, mainly to minimize interference with these signals. It works fine without interference. I don’t know much about optical cables and their signals, but someone on the 8th floor said, “One of the biggest advantages of optical cables is that they are not affected by electromagnetic interference, and in fact, they generate no such interference.” ”In that case, optical cables have no effect on instrument signal cables, and instrument signals also have no effect on optical cables. I’m not sure if this is the correct way to understand it
Yes, if the distance is long, the optical cable must be armored.
On the 13th floor, your understanding is completely correct
It should be possible; the optical fiber isn’t disturbed, and there are no interference signals. Anyway, our company has used a lot of it, and there have been no issues to date. But the control cable cannot be used together with the video coaxial cable!
Forums are great; through discussions, one can confidently place the instrument signal shielding cables inside the cable tray for those cables, thus eliminating the need for a separate instrument tray. Thank you all, howl~~~~!
It should work fine in practice; there is no interference between the two.
There’s no problem; fiber optics transmit light signals, so they don’t cause any interference. In actual construction, they are usually installed together.
That’s how it is with telecommunications: there’s never any need to set up cable trays, as they always make use of the existing instruments
Theoretically, they don’t interfere with each other when placed together. However, the instrument cables run in cable trays while the fiber optics are laid underground. Once the fiber optics are installed, they remainほとんど unchanged, whereas the instrument cables require maintenance and reinstallation over time.