Consultation available for intrinsically safe cables and flame-retardant cables
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I would like to ask whether there are any differences in models between intrinsically safe cables and explosion-proof cables? It seems that there’s no explicit requirement, and it doesn’t have to be a blue cover either… Is it reliable to distinguish them by the color of the cover? Furthermore, what are the hazards of using flame-retardant cables in instruments compared to intrinsically safe cables? I’ve always thought that whether a cable is intrinsically safe or not should have no impact on signal transmission... Is the ZR-KVVRP an intrinsically safe cable or an explosion-proof cable?
Cables are classified into control cables and power cables; does this intrinsically safe cable fall under the category of control cables?
There are differences: in terms of numbering, intrinsically safe cables are marked with the IA designation; in terms of color, they are blue. As for performance, intrinsically safe cables require low inductance, low capacitance, and low reactance. Intrinsic safety instruments require the use of intrinsic safety cables due to issues related to their signals, and such cables must be installed separately from flameproof cables. Of course, in some projects, for instruments that are produced in small quantities by manufacturers and are not of great importance, these cables can still be used
Blue: Intrinsic safety circuits use intrinsic safety cables; it has no significant impact on simple signal transmission. ZRKVVRP is a non-intrinsic safety cable
Back in the days when we were setting up circuits to obtain Intrinsic Safety certifications, the concept of Intrinsic Safety cables didn’t even exist yet. Regarding the inductive and capacitive reactances of the current circuit, so-called intrinsically safe cables lack technical support. It’s something of variable length and magnitude; its outer layer is colored blue – so it’s intrinsically safe, right? Well, if the cable gets too long and the inductive and capacitive reactances exceed the allowed limits, who will be held responsible? Let me say, it deserves to be called just a color-coded cable. In terms of manufacturing, it simply involves changing the cable’s outer coating to blue; there’s no complex technical involved. Is it possible to take out the waterbirds and coat them with lacquer, so that they can be called Benan hammers? Some of these ideas are absurd, like something stuck in one’s throat, and they provoke anger. :lol
I think the same way; I couldn’t tell what the actual difference is in terms of manufacturing processes between intrinsically safe cables and non-intrinsically safe cables. Take the KVVRP 2*1.5 cable as an example – sometimes it’s blue and sometimes it’s black, but I don’t see any difference in its performance……
There is no difference among cables; the colors are used merely for better identification and to facilitate maintenance. For example, the cable of a K-type high-temperature thermocouple is red
I’ve also looked into similar issues, and the conclusion is that everything is the same except for the color!
3# Building is the correct answer. A intrinsically safe explosion-proof system consists of an intrinsically safe instrument, a safety barrier, and intrinsically safe cables in order to form a complete and standard explosion-proof chain.
Intrinsic safety cable model: ZR-IA-XXXXX