Search found 40 matches

by jonc_uk
Thu Sep 28, 2023 3:53 pm
Forum: Energy storage, batteries, energy tariffs
Topic: Electronics help required with Sofar ME3000SP
Replies: 71
Views: 29007

Re: Electronics help required with Sofar ME3000SP

Tinbum wrote: Wed Sep 27, 2023 12:20 pm EdIt-found problem but not sure why. The battery pack I used has my Teensy CAN translator on it to the other inverter and it seemed to be some conflict with that.
Do you have the Teensy CAN interface in passive mode?

Otherwise your battery will be seeing double ACKs for each message it sends.
by jonc_uk
Tue Sep 12, 2023 1:32 pm
Forum: Energy storage, batteries, energy tariffs
Topic: Sofar ME3000SP 'Check Charge' cycle
Replies: 12
Views: 8915

Re: Sofar ME3000SP 'Check Charge' cycle

I am in the process of a Sofar ME3000SP install, and I experienced exactly this issue while operating in Auto with only CTa clamp connected. I am using firmware 3.30 (latest as of today). * Charge 30s (inc. 3s ramp-up) * Wait 2s * Standby 2s * Check charge 2s * Ramp-up charge ?s.. As soon as I conn...
by jonc_uk
Sat Aug 12, 2023 11:14 am
Forum: Energy storage, batteries, energy tariffs
Topic: sofar me3000sp g100
Replies: 16
Views: 10942

Re: sofar me3000sp g100

Firstly, I am not using the CTpv, so there is no reporting of generation.

The system then uses a single CT and the calculated consumption is the balance of what it has measured as import/export from the grid and what power it has sent to the battery.
by jonc_uk
Fri Aug 11, 2023 6:34 pm
Forum: Energy storage, batteries, energy tariffs
Topic: sofar me3000sp g100
Replies: 16
Views: 10942

Re: sofar me3000sp g100

Jon are you sure you have the Import and Export the right way round? Looks to me as though in you second picture it is exporting not importing? Yep. It's two different inverters - L2 and L3. It just so happened one was importing and one exporting (here in the Algarve, currently at 41 degrees). Edit...
by jonc_uk
Fri Aug 11, 2023 6:27 pm
Forum: Energy storage, batteries, energy tariffs
Topic: sofar me3000sp g100
Replies: 16
Views: 10942

Re: sofar me3000sp g100

Yes, I agree with you - it is not behaving as per the test certificate. Hardware V1.00 Firmware V3.20 (as yours) Auto mode (well, strictly speaking time of use mode) CT disconnected while discharging (first image is before disconnection): https://i.postimg.cc/3kT7WdFJ/Screenshot-2023-08-11-at-18-18-...
by jonc_uk
Fri Aug 11, 2023 3:24 pm
Forum: Energy storage, batteries, energy tariffs
Topic: sofar me3000sp g100
Replies: 16
Views: 10942

Re: sofar me3000sp g100

The G100 certificate is here: https://midsummer.ie/pdfs/sofar-g100-declaration.pdf and says: 4. Response Time G100 requirement The ELS must detect an excursion and reduce the export to the Agreed Export Capacity or less within 5 seconds. ·The response time is less than 5 seconds under communication ...
by jonc_uk
Mon Jun 26, 2023 3:40 pm
Forum: Transport
Topic: Musings on public charging
Replies: 10
Views: 1506

Re: Musings on public charging

22kW AC chargers are 3phase, so if the car only has a single phase on-board AC-DC charger, the car will only take 7kW. Even in my TM3 I get "only" 11kW from 22kW 3phase Type 2s. I think Tesla Model S/X get 15, along with the eTrons and some of the other German brands. My 2020 MX charges a...
by jonc_uk
Wed Apr 05, 2023 3:48 pm
Forum: Spaceheating
Topic: Choice of HT ASHP for retrofit
Replies: 26
Views: 7455

Re: Choice of HT ASHP for retrofit

I have Daikin aircon in Portugal. I would consider it slightly superior to Mitsubishi. I think it is the brand of choice for commercial install there (eg. shops).

I have had zero problems with 6 split units in 7 years.
by jonc_uk
Sat Apr 01, 2023 1:59 pm
Forum: Energy storage, batteries, energy tariffs
Topic: SOFAR ME3000SP inverters.
Replies: 18
Views: 2573

Re: SOFAR ME3000SP inverters.

The important thing if you use multiple units is you need to utilise the "Freeze CT" function immediately after commissioning. Yes - good advice. I thought it was startup. From my previous experience, it was: Mains off/on Battery off/on Change of work mode I made some installation notes h...
by jonc_uk
Fri Mar 31, 2023 3:38 pm
Forum: Energy storage, batteries, energy tariffs
Topic: SOFAR ME3000SP inverters.
Replies: 18
Views: 2573

Re: SOFAR ME3000SP inverters.

Tinbum wrote: Fri Mar 31, 2023 2:30 pm You can use communication between the battery and inverter. :?
Ah yes - I had assumed this was going to be a dumb balancer on some loose cells.

If a proper BMS is communicating with the inverters, then you can put in as many inverters as you can communicate with.