GoSolr vs Solar

Speedster said:
Why do you want to express it in a number of hours?
Click to expand...
I don't eskom decided on the "unit"

You buy kwhours

ie how many hours can you pull a kw constant load

And then any load you pull gets calculated/changed and deducted from that total on whatever sampling rate they used on the meter probably has to be 50hz since the flow direction changes
 
leon.davibe said:
I don't eskom decided on the "unit"

You buy kwhours

ie how many hours can you pull a kw constant load

And then any load you pull gets calculated/changed and deducted from that total on whatever sampling rate they used on the meter probably has to be 50hz since the flow direction changes
Click to expand...

I dropped my kids of at school this morning. It's 5km away. That's the distance I would travel in one hour if I travelled at 5km/h.
 
leon.davibe said:
I don't eskom decided on the "unit"

You buy kwhours

ie how many hours can you pull a kw constant load

And then any load you pull gets calculated/changed and deducted from that total on whatever sampling rate they used on the meter probably has to be 50hz since the flow direction changes
Click to expand...
This might help?

Energy consumption calculator | kWh calculator

Energy consumption calculator. kWh calculator.
www.rapidtables.com www.rapidtables.com
Screenshot_20230619_074931_com.android.chrome.jpg
 
Dolby said:
Tripping issues and voltage drops unrelated to capacity. I posted on the Victron community forum and I’ll try get their reply for you tomorrow - but they said the same thing in that a minimum is required.
Click to expand...
But your sheet says recommended, that's not a minimum.

Sure you not getting drift but at excess you had that shouldn't be a issue.

The batteries do take a voltage knock when running at high output, mine shifts by over .5V or more but recovers as soon as the load returns back ( talking 100a out full bore vs my normal 600/800w which is about 20a ).

Do some deep stat digging on load, battery voltage and amapage at the time when issue oucorrs.
 
So back to
Kosmik said:
But your sheet says recommended, that's not a minimum.

Sure you not getting drift but at excess you had that shouldn't be a issue.

The batteries do take a voltage knock when running at high output, mine shifts by over .5V or more but recovers as soon as the load returns back ( talking 100a out full bore vs my normal 600/800w which is about 20a ).

Do some deep stat digging on load, battery voltage and amapage at the time when issue oucorrs.
Click to expand...

Even if these are are only "suggestions for reliable operation for single phase", it's something not everyone knows . It may give the impression that you can add when money is available

Regardless though - I'm ordering the other battery today, so it's a few days I live with this 'issue' .

Are you saying that the load on that single battery may cause a voltage drop and therefore a trip ? It's certainly not consistant and appears to be random
Could something like a fridge compressor kicking in potentially cause a trip in the few days while I wait for the battery?

I seriously don't use lots of power - so I'm thinking that could be the only thing
 
Dolby said:
So back to


Even if these are are only "suggestions for reliable operation for single phase", it's something not everyone knows . It may give the impression that you can add when money is available

Regardless though - I'm ordering the other battery today, so it's a few days I live with this 'issue' .

Are you saying that the load on that single battery may cause a voltage drop and therefore a trip ? It's certainly not consistant and appears to be random
Could something like a fridge compressor kicking in potentially cause a trip in the few days while I wait for the battery?

I seriously don't use lots of power - so I'm thinking that could be the only thing
Click to expand...
Possibly. You have a 2.5kva battery so my thumbsuck says at 1C you would at best be outputting 50A. If you have power feeding large appliances etc you could hit that but your inverter would limit. Keep in mind, your battery would be dead in a hour at that rate so adding in shutoff you looking at less.

But look at your graphs and see if you can find a pattern, not SOC or only load.
 
Kosmik said:
Possibly. You have a 2.5kva battery so my thumbsuck says at 1C you would at best be outputting 50A. If you have power feeding large appliances etc you could hit that but your inverter would limit. Keep in mind, your battery would be dead in a hour at that rate so adding in shutoff you looking at less.

But look at your graphs and see if you can find a pattern, not SOC or only load.
Click to expand...
Pylontech US2000 is 0.5C
 
Kosmik said:
Yeah I saw so that makes it 25A even. I assume that's discharge not charge or are they symmetrical?
Click to expand...
Here's from the spec sheet. I've never attempted to test it to the max so not sure in practice how it works. I have 4 of these (i.e. 200Ah) on my 8kW inverter and never had a moment's issue thus far.

US2000C.png
 
Lupus said:
This might help?

Energy consumption calculator | kWh calculator

Energy consumption calculator. kWh calculator.
www.rapidtables.com www.rapidtables.com
View attachment 1542693
Click to expand...
You don't need a special calculator

Well some do
A kwh is just 1000wh
What is a watthour

You can use 1 watt load for an hour

ie so 1kwh means 1000watt for an hour long

But can also mean 250watt4hour

The 4x250 is consolidated hence 1000wh or 1KWh

Everything gets consolidated on the power meter as if used in an hour

Same with pulling 2000w kettle for 0.083hours

2000w0.083hours
2000x0.083wh (5min/60min=0.83...)
Thus 166wh

And divided by a thousand to be expressed/deducted as 0.166kwh
 
Last edited:
Every company I call does Solar with Batteries and Inverter and not just a Battery and Inverter setup

Except Alumo or something. But their monthly fee escalates so you end up paying far more for something you'll never own.

If it was a fixed rental per month, then sure.
 
Hmmm, I might need to call them to ask about exporting to grid but I don't want to fok out R6k for new meter

1697626001834.png
 
Dolby said:
Nope.

400-500w if that.

But basically I’m not saying that IS the issue - but there was an earlier post that said hypothetically you can have a 10kw inverter with 1kw battery.

That gave me the impression that I could just upgrade capacity as I have money, as long as the inverter is large enough. They were both independent

So in my case I was planning on getting a 2nd battery anyway - I just assumed it would work correctly until that point
Click to expand...
With that load the system is suppose to work flawlessly

Only if you exceed the max output allowed by the bms should you be having shutdown problems

Yes you can run a 10kw inverter on a 1kw battery if your Respect the 1kw battery limit

if you got a new battery and using system trouble free now
the problem may not present itself but is still there

i would dig further while the item is under warrantee

disconnect the old battery and leave only the new one if the behaviour isn't the same the problem is still there

if it behaves the same then likely there is another variable at play we don't know ie some startup load that trips battery
 
leon.davibe said:
With that load the system is suppose to work flawlessly
Click to expand...

I had a 3rd p[arty that deals with these inverters and done some huge installs to come over & look. He fiddled for 30 minutes & changed a few settings - and everything was perfect . At one point, I accidently switched off a battery and ran with a single battery. So the battery wasn't the issue, but something he changed

Actually very happy with it now !
 
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