ZePrez
Solar Enthusiast
Since June.... 16 MWh,,, No issue, they just work.
SRNE 20KW parallel ASP journey.
- Thread starter 42OhmsPA
- Start date
42OhmsPA
I hate clouds!
Nice, you're making some serious power since June.
Zwy
Emperor Of Solar
You need to get with the times.
I have zero Mwh on my house SRNE system. The boxes are still sitting in the shop since March and the LV6548's are still powering the house. I don't know why I'm working on the next house array when I won't have any MPPT's to connect to once it is done. Trenched in conduit over the last weekend so all the ground work is done before it gets into the crappy fall weather.
Ozark Tinkering
Solar Wizard
- Joined
- Dec 23, 2021
- Messages
- 1,496
timselectric
If I can do it, you can do it.
- Joined
- Feb 5, 2022
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- 29,798
You need to get with the times.
I have zero Mwh on my house SRNE system. The boxes are still sitting in the shop since March and the LV6548's are still powering the house. I don't know why I'm working on the next house array when I won't have any MPPT's to connect to once it is done. Trenched in conduit over the last weekend so all the ground work is done before it gets into the crappy fall weather.
Planning and timing, is what gets things done.
RowlyRowl
I need a nap.....
I have similar in a 230v version. there is no info or online pdf manual for it. the specs in the manual are mostly the same but in one spot says max solar is 1000w not 500+500 or 600 like the sheet has. I will contact them before i add solar anyway , have a few questions.
42OhmsPA
I hate clouds!
There are a couple threads on the HESP model, not sure anything specific to the single phase version.
ZePrez
Solar Enthusiast
Hi
Odd happening:
System simply works. It is not stressed: total load is at max 60% of the max, 30 Kw available, and what I would call “base loads” is 2 Kw, (14 hours about) during the day and 5 Kw during the night ... Roughly... Pleased.
Lately we have had our share of no sun days with a Hurricane and Solar has taken a nosedive so Gen is up, more often that I appreciate
.. No way around that, that the cost of off-grid.
Here is the system under DG..
View attachment 342402
On Generator (it is noted "grid") on SOlar Assistant ... That Inverter that should deliver 1/3 of all capacity is contributing barely 1/6 .. consistently.. and with a strange unbalance on the phases as well..
On battery or solar ..., it doesn't matter how heavy the loads would be, it could approach peaks of up to 25 kW, and it has on several occasions .. no issue, each inverter provides about 1/3 of the total load .. We also made sure that the solar from the PV (Ground and flat roof mounted) was equally shared between the inverters MPPT so ... We get the same on production ... hitting 25 kWp from time to time, about 100 kWh per day of production, sometimes more .. the past few days ..
Today with >25 kWp array barely registering 240 Watts
as I type this
I haven't looked deeply into this, just noticed it a few days ago , none of the Inverter is reporting any fault ...
What do you think?
Odd happening:
System simply works. It is not stressed: total load is at max 60% of the max, 30 Kw available, and what I would call “base loads” is 2 Kw, (14 hours about) during the day and 5 Kw during the night ... Roughly... Pleased.
Lately we have had our share of no sun days with a Hurricane and Solar has taken a nosedive so Gen is up, more often that I appreciate
.. No way around that, that the cost of off-grid.Here is the system under DG..
View attachment 342402
On Generator (it is noted "grid") on SOlar Assistant ... That Inverter that should deliver 1/3 of all capacity is contributing barely 1/6 .. consistently.. and with a strange unbalance on the phases as well..
On battery or solar ..., it doesn't matter how heavy the loads would be, it could approach peaks of up to 25 kW, and it has on several occasions .. no issue, each inverter provides about 1/3 of the total load .. We also made sure that the solar from the PV (Ground and flat roof mounted) was equally shared between the inverters MPPT so ... We get the same on production ... hitting 25 kWp from time to time, about 100 kWh per day of production, sometimes more .. the past few days ..
Today with >25 kWp array barely registering 240 Watts as I type thisI haven't looked deeply into this, just noticed it a few days ago , none of the Inverter is reporting any fault ...
What do you think?
Attachments
Last edited:
42OhmsPA
I hate clouds!
I don't have any experience with parallel and grid / gen support.Hi
Odd happening:
System simply works. It is not stressed total load is at max 60% of the total 30 Kw available and what I would call base loads is 2 Kw, (14 hours about) during the day and 5 Kw during the night ... Roughly... Pleased.
Lately we have had our share of no sun days with a Hurricane and Solar has taken a nosedive so Gen is up, more often that I appreciate
Here is the system under DG..
View attachment 342402
On Generator (it is noted "grid") on SOlar Assistant ... That Inverter that should deliver 1/3 of all capacity is contributing barely 1/6 .. consistently.. and with a strange unblance on the phases as well..
On battery or solar ..., it doesn't matter how heavy the loads would be, it could approach peaks of up to 25 kW, and it has on several occasions .. no issue, each inverter provides about 1/3 of the total load .. We also made sure that the solar from the PV (Ground and flat roof mounted) was equally shared between the inverters MPPT so ... We get the same on production ... hitting 25 kWp from time to time, about 100 kWh per day of production, sometimes more .. the past few days ..
View attachment 342407
I haven't look deeply into this, just noticed it a few days ago , none of the Inverter is reporting any fault ...
What do you think?
If I remember correctly I do remember reading about there being an imbalance on grid / gen in parallel so it might just be how they operate.
As long as they aren't throwing faults and things are working I wouldn't worry about it to much.
Robbert
Solar Enthusiast
Apparently you can not switch one inverter off when they are in parralel. I just received this message from SRNE.
42OhmsPA
I hate clouds!
That's false. Myself and @agtcovert have both turned one off while in parallel and the other one worked; unless I'm dreaming.
GarySaf
New Member
On my HEBP’s in parallel they shutdown exactly as SRNE described. Error 34 and power cuts off.
Perhaps it’s a newer firmware from your model.
42OhmsPA
I hate clouds!
Firmware would make sense. I'll have to test again when I get home, if I reply back I lied above and was dreaming.
Robbert
Solar Enthusiast
Ok that is very good news.
I just bit the bullet and started ordering two units (8Kw each). Hopefully I'll be able to the same as you did since I actuatlly only want to use one and need the other to step in when the power demand is over a certain threshold (e.g. 40%).
42OhmsPA
I hate clouds!
You'll have to make the other one step in manually if you want to do what I think you want to do. When they are both on they share the load pretty much equally, according to support there isn't a way to have one idle behind the scenes while the other one does all the work. If you turn one off it won't turn on automatically, hence my comment about intervening manually.
Robbert
Solar Enthusiast
If it is possible to turn one inverter off and the other keeps running uninterupted, think I can make that work via the dry contacts.
I have solar assistant in my Home Assistant and in Home Assistant I can make a rule to do 'something' with the dry contacts. Just made arrangements for an invoice so it will take a couple of weeks before they arrive. Looking forward to playing with them.
42OhmsPA
I hate clouds!
Make sure shipping is DDP terms if ordering overseas stock...
Robbert
Solar Enthusiast
Here on Bonaire all solar related items are tax exempt. So I don't need to pay additional charges / duties.
marionw
Solar Wizard
SRNE Modbus Register 0xDF00 is for Power On/Off
Writing a 1 to this register will Power On, writing 0 to this register will Power Off
Does not completely turn off the inverter, just the AC Ouput/Load and the inverter goes into a standby state and will continue to draw "Idle" power.
Don't know if Solar Assistant supports this automation
I have tested this with my 5KW and 10KW (non parallel)
Writing a 1 to this register will Power On, writing 0 to this register will Power Off
Does not completely turn off the inverter, just the AC Ouput/Load and the inverter goes into a standby state and will continue to draw "Idle" power.
Don't know if Solar Assistant supports this automation
I have tested this with my 5KW and 10KW (non parallel)
ricardocello
Watching and Learning
That’s the way to do it!
agtcovert
Solar Journeyman, Victron's other whore
Me too, on parallel versions. Keeps the wifi dongle alive (as I recall, that's the pathway to accessing the registers remotely). It's possible to have one offline while the other is working. In my case, I was using it as a solar charger. Didn't change any parallel settings, just turned one off. No idle consumption.
With the recent Solar Assistant feature addition for SRNE password protected features, automations might even be possible with this.
marionw
Solar Wizard
The password for SRNE Inverters (and clones( (for most anyway) can be disabled.
Automations worked for me with the update.
Telling people how might be more useful than just "it can be done". I never ran across anywhere that said it was possible to disable it.
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