CPL and outlets on different circuit breakers
yg_be Posted messages 23437 Registration date Status Contributeur Last intervention -
Hello,
In my electrical installation, my outlets are not all on the same circuit breaker. (30mA differential and a circuit breaker for each group of outlets)
Is there an electrical solution to transmit power line communication (PLC) information between two groups of outlets that are not on the same circuit breakers? Is it possible to use a system like a phase coupler as with the PLC issue in a three-phase system? I'm not very familiar with how it works.
I have brought my fiber installation directly into the room where my PC is located at home. Is there a DIN format PLC system that I could insert into my electrical panel that would allow me to retrieve the internet signal in Ethernet or Wi-Fi format, and then "reinject" it into the other groups of outlets?
Thank you in advance for your insights.
3 réponses
Hello,
The signal can pass from one circuit breaker group to another, as long as it’s on the same phase. (So in single-phase, no problem) But necessarily with losses, so you need to see if the flow remains satisfactory in your case.
There is all sorts of equipment, but in your case, apart from a box to reamplify the signal if it’s not passing well, you shouldn’t need anything more.
Best regards.
Hello,
I don't think such a module would be useful in your setup.
Here is an example of a DIN-formatted powerline Ethernet bridge to be inserted in an electrical panel: the dLAN® pro 1200 DINrail from Devolo.
Hello,
As far as I know, no, but obviously a phase coupler should be able to do that:
It is no more difficult to couple different phases than the same one downstream of the circuit breakers, except that we will lose isolation in case we want to isolate a circuit, which poses a safety risk during intervention on the part of the circuit that we think is isolated, but is no longer so, being still coupled by the capacitors; for true safety, a general cutoff would be necessary.
In any case, it would be much more effective to run a real Ethernet cable with 4 twisted pairs, rather than these makeshift solutions.
A powerline communication system should always be only a temporary measure while waiting for a better solution, and there are many.
And voilà, there you go ....
But what a pain the line spacing is !!
Hello,
I don't quite see how we can amplify the radio signal of a powerline adapter and reinsert it on the same electrical medium without causing interference or creating feedback like a Larsen effect and generating a ton of harmonics that would completely pollute the electrical network, especially since the radio frequencies of powerline modems are very broad (from 1 to 80 MHz) and it would need to be done in both directions....
I was thinking about something that would act like a wifi relay, retrieving the signal, amplifying it, and creating a new network, thus extending the range. But it doesn't really seem to exist as such. However, I don't see what's stopping us from placing a receiver and a transmitter side by side? (Okay, the final speed might not be great)
And in some cases, simply adding a module along the way seems to significantly improve the speed (testimony here for example).
But in any case, I agree with you that it's much better to do without it altogether...
Yes, I thought about that too, but it's only valid for 2 really isolated electrical networks, because two powerline adapter networks on the same electrical network will compete with each other and interfere with each other.
Adding a module "along the way", what does "along the way" mean? the electrical panel?
I don't think this useless modem is of much use, because I don't know, but I don't think that powerline adapters work in relay, but rather always in peer-to-peer, so it's always the signal from both ends that has to pass directly between the two, even if it's better with a third useless one.
So the circuit breakers and the differential switches allow the PLCs to pass through without filtering them. That's interesting. However, I imagine there must indeed be some loss in throughput. I will do a test.
The circuit breakers, as they incorporate windings to measure electrical current, attenuate the radio frequencies of powerline adapters, yes.
In what proportions, it is difficult to say, the range of these frequencies being quite high, but they do not block them either, otherwise powerline adapters would never have existed.