[Solved] I am looking for a 230V AC relay to restart a solar panel connection

Hello
I am looking for help here regarding automating the physical restart of the cable connection between the solar panel and the power station, which stops charging after a momentary blackout or voltage drop to some minimum values. To restore charging, I have to unplug from the panel and reconnect it. I am therefore looking for a relay that is 230V AC and is capable of connecting and disconnecting a DC line isolated from its supply with voltages up to 70V and power up to 500W. I can't even work out if such a relay exists for sale, because when calling various electrical shop and wholesaler helplines I am bounced around by people working to sell devices about which they only know as much as they read on the casing, which is almost nothing. If anyone is able to help me I would be very grateful. Best regards to the forum members.

JEMITA high voltage 1000 V 600 A DC contactor power relay SEV600AHXL
Other models from this company can be purchased

tomaszewskiireneusz wrote:

I am looking for a relay that is powered by 230V AC

The question is about the coil power for this relay?

Hi. No. I can power from the power station itself with the current as in the socket, but I want to reset the current obtained from the photovoltaic panel, where I have currents with variable parameters but it is always direct current. In order to be able to charge the power station after a night or daylight failure, I have to disconnect and reconnect the plug from the panel. The whole thing was supposed to work unattended on the allotment, but apparently the manufacturer has screwed up something, because after drops to 5W from the panel, the system crashes, or goes into a switching loop to charge and disconnect. It does not recognize that the light has already come on and charging is possible.

@tomaszewskiireneusz Did you assemble the kit yourself, or some "company"?
If "company", make a claim.

If you can, describe the entire installation or draw a schematic diagram
These relays have a wide range of coil voltages

The entire installation is the PV panel, the cables connecting to the power station and the station itself. That is, the panel and the 15kg box with all the junk needed to convert the received current from the photovoltaics into the correct one to charge the cells built into the device. The device itself also has inverters built in to allow the voltage from the built-in battery to be boosted to the sockets on the case, namely USB, USB-C and 4 230V sockets. The power station itself is an Allpowers S2000 and accepts power from PV panels up to 13A, 70V and 500W. I have one 430WP panel that fits within these parameters. Everything works decently until the charging power drops to about 5W. Then, as I wrote earlier, it reacts to micro currents and switches in a loop between charging and no charging until it hangs up. And I'm keen to be able to leave it on the allotment without service to power the router, surveillance cameras and possibly the fridge. But after every night it's a dud, because charging doesn't start even if the panel gives 400W. Only disconnecting the plug and reconnecting starts charging. That's why I'm looking for a remote disconnect and reconnect solution. I could power such a relay from one of the sockets on the chassis, but there must be separation of the power line, from the controlled line, in this relay. So far, all the relays I've found on the web have the controlled line connected to the control power, so they're not suitable for my purpose, because all I'd achieve is letting the wrong current (AC) into the PV (DC) socket and probably spectacularly burning down the device I spent a bit on. And the device itself is quite clever, as I have a sizable powerbank in the enclosed case, which is convenient for taking fishing or camping, and enough for some lamps, chargers, laptops or whatever else pops into mind. So a fairly simple problem: a relay or switch with or without Wi-Fi, as the control voltage could also be controlled by a Wi-Fi socket, and with separation of the AC 230V control line from the DC control line over 13A, 70V and 500W.
If nothing like this has been developed yet, please let me know, I will know that I need to think of another way. As for the warranty, I prefer to leave that as a last resort, because the issue is a nuisance. Online purchase. I wasn't aware that such a problem could arise, and the unit itself is designed for portability and ad hoc charging from panels, so presumably the designer didn't foresee that such a problem could arise.


Added after 3 [minutes]:


>>21056967
This is exactly what I don't need.



>>21056967
This is exactly what I don't need.

(I am therefore looking for a remote disconnect and connect solution. I could power such a relay from one of the sockets on the chassis, but there must be separation of the power line, from the controlled line in this relay. So far all the relays I have found on the web have the controlled line connected to the control power supply, so they are not suitable for my purpose, because all I would achieve would be to let the wrong current (AC) into the PV (DC) socket and probably spectacularly burn out the device, on which I have spent some money,)

Most relays or contactors have the coil of the power supply galvanically separated from the current path, it is enough to select the load current

I found a Shelly relay with exactly the solution I needed. Shelly's potential-free Plus 1 WiFi relay, costing around £75-80 at the moment.

It can control a DC or AC line, and the control itself is 12, 24 or 230v depending on how it is connected. There is also the possibility to connect a physical switch and control via wifi, which has overriding priority (you can disconnect or connect the contacts when given an "on" signal from a physical switch). Unfortunately, it does not work with the Tuya app, it only uses the factory app, which has quite a few configuration options, e.g. start-up or shut-down linked to sunrise and sunset with a set delay or advance. The only thing missing is the ability to set the unit to restart every given time interval, but this can be clicked on manually several times a day, in case the charging current from the PV panel drops below the charging level, which in my case caused the charging station to hang up. To automate the latter, I bought an in-line voltage meter from the PV, which will work with the Wi-Fi socket that powers the relay control, already under the Tuya app.
Thank you all for your help.