Change HV trip time (or value?)

[pi-amp]

Hello,
When using the hoymiles DTU you're able to change HV trip voltage (or time, i dont recall) via the cloud app, to accomodate to your local voltages fluctuations.
I only use opendtu so i canot access the cloud app. My voltage is rather high her (~250V), and often goes beyond 253V for some time, and the hoymiles stops and comes back to life after 20 minutes.
It would be nice to be able to change that behaviour in opendtu ? I can read the grid settings and it says : high voltage 253V; trip time 3seconds...

[ms49434]

Where are you located and what is your actual grid profile?
OpenDTU cannot upload grid profiles and cannot change an existing grid profile. You must have an installer account and a Hoymiles DTU.
It is not recommended to change any of the grid profile settings. It might be illegal in your country as well. Instead, contact your energy provider and ask him to fix the high voltage issue.

[pi-amp]

thanks,
i'm in france where voltage is supposed to be at 230V with +/- 10% variations, so 253v is still ok for my energy provider.
my grid profile, according to opendtu, is : XX - EN 50549-1:2019 Version 2.01

[ms49434]

I did a quick search and found that grid profile UTE C 15-712-1(A) for mainland France would apply to you. You are currently using a generic grid profile for Europe which might not be compliant with your energy provider requirements. Please get or find someone with a Hoymiles DTU and update the grid profile of your inverter, then check again.

[pi-amp]

i'll try that
if i connect my HMS to a hoymiles DTU, is there no risk that a new firmware gets installed and i loose opendtu connection ?

[ms49434]

As far as I know, firmware updates are carried out on request. I have not heard that updates are applied automatically.

[pi-amp]

Ok, i ordered a Wlite-S DTU and i'll see how it goes !

[ms49434]

The Wlite-S DTU will work for HMS/HMT models with 1G radio. Which inverter do you own?

[pi-amp]

HMS 1600

[pi-amp]

i got the hoymiles dtu, was able to change grid profile to VFR2019
now HV trip is :
264V for 0.1s
253V average 10min

so it seems good :)

but now opendtu cannot read the grid profile correctly...