Remote differential switching - how to do it? Methods and equipment.

Hello
I had this situation happen to me. Just before going on holiday the differential fell down. Luckily not 3 hours later.There are strategic appliances hanging on it: 2 fridges and a central heating boiler.
It is difficult to say what the reason was, it happened maybe 2 times in 4 years. I thought of a way to inform remotely about the situation, but more importantly to switch it on again but not with the finger of the absentees.
Anybody has any idea how to solve this?

Re-engagement can be done with a phone call to a family member or neighbour with the keys to our house

I used to have such an automaton which switches on the differential itself.
https://archiwum.allegro.pl/oferta/automat-do...ia-roznicowek-super-promocja-i6670653244.html

78db78 wrote:

I used to stock such a vending machine

And interestingly there are these machines for sale on a regular basis (a colleague gave a link to an archive auction)

Not a bad idea, but I would have to change the switchgear because it's already cramped and this one is probably 2-3 modular.
In the meantime, I found something like this ( Tuya). The question is whether it has enough power...

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>>20668783
this was an example of a device

Yes yes, I am still looking for something like that.

Now get an electrician to take measurements and find out what is causing the switch to malfunction !!!!!!!!!!!!!!!!!!!!!!!!!

This is not what I asked. Diagnosis takes time.
An attachment to the differentiator costs over 1000zl.I probably won't give that much.

Somehow, my pineal gland was pricked and a thought occurred to me - since the differential has tripped is it a good idea to switch it back on without supervision/control/presence? All in all, it's a safety apparatus for a reason
Apparently nothing but .... somehow a slight uneasiness sets in.

That is why, in post #2, I suggested a cheap and safe temporary solution to the problem

But I need to know that the differentiator worked.
I see that the Chinese have electronic.To short-circuit in Tuya Zigbee.
I will just check their reliability.

palmus wrote:

But I need to know that the differential worked.

palmus wrote:

But I need to know that the differential worked.

I'll just check their reliability.

I still make myself an overcurrent circuit breaker so that it automatically turns on by itself. The differential will not always disconnect the circuit, sometimes an overcurrent circuit breaker will. But why complicate matters? If the RCD is supposed to switch on as it goes off regardless of the reason for the switch off then maybe bypass it, so do the same with the overcurrent circuit breaker, especially as they can't always be lifted? Of course this is such a joke
Seriously your idea is of the silly kind. You can't always turn it back on if there's a leak or short circuit and then what? Your plan will go...
Let me guess, you have 1 RCD for the whole thing? Even if you don't, it's much more sensible to protect sensitive circuits with separate RCDs, then flooding a circuit outdoors/field won't cause the fridge to switch off. It's so simple, reliable and functional, but no, it's better to put in a prosthesis which may not work anyway.
Fuses very rarely switch off without reason.

palmus wrote:

But I need to know that the differential tripped.

SMS notification implemented on Arduino + GSM module via relay which will let off as the power goes out in the socket with the fridge.

hindoos wrote:

through a relay which will let go when the power goes out

And if the power goes out from the utility will there be a notification too?
Instead of a relay, add an auxiliary contact to the differential or fuse, depending on what is to be monitored.

palmus wrote:

To be wired in Tuya Zigbee.

Is this a differential only for the kitchen or for the whole flat? Because if the whole flat then I'm guessing the internet will be gone too....

Adam-T wrote:

And if the power supply disappears will there be a notification too?

Powering the Arduino from the battery, it's quite obvious in principle it could simply switch on after a power outage and immediately after logging on to the GSM network send an SMS notification, the problem with the module hanging up would be eliminated.

You misunderstood me, I meant the notification (redundant) after a mains power failure. .

In my opinion, even if the entire power grid is down, this information is as sensible and useful as possible all the more so if the power goes down for a longer period of time and thaws (and then re-freezes in our absence) our food - a potentially health-threatening situation. You could say it's such an extra feature .

The whole topic going in the direction of powdering the syph, heading for the bin.... This is not what we do. If the RCD is working, there is a cause and it must be found and eliminated....

Strumien swiadomosci swia wrote:

The whole subject going to powder syph, heading for the bin.... This is not how we do things. If the RCD is working then there is a cause and it must be found and eliminated....

.... including the possibility that the RCD itself may be allowed to fail, just like any other product containing electronics inside.
Unless I am unaware of something, that e.g. the EU and other sentient beings have recognised the RCD as perpetually working - then there is no need.

Let's not go in the direction of absurdity.The differential protects only the kitchen and the cellar.And there are 3 important appliances.A boiler and 2 fridges.I described it at the beginning.And it's the only thing I'm concerned about.If the power supply fails,so be it.I can't do anything.If something causes a short circuit,so be it (hasn't happened for years). It's only supposed to work when you're away for a long time and in case of a " strange" tripping of it.There's nothing to expand other theories.