question

eggi0711 avatar image
eggi0711 asked

Pylontech capacity not matching VRM data

Dear community,

i have a 3phase system running with 3 Multiplus 3000 II 48V, 2 Victron Mppt's, cerbo gx and a 3 Module Pylontech US2000C stack.

At the moment i'm not feeding in to the grid.
To my eyes everything looks correct, yet the system seems only be able to feed 2.2kwh to the batteries starting at 10% in the morning until they show 100%.

In my understanding 3 Modules should amount to something like 7.2kwh, did anyone experience something similar or can point me into the right direction?



vrm-solar.png


pylo1.png



pylo2.png

pylo3.png

Pylontech
vrm-solar.png (48.5 KiB)
pylo1.png (40.3 KiB)
pylo2.png (41.3 KiB)
pylo3.png (26.5 KiB)
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5 Answers
nickdb avatar image
nickdb answered ·

What does the system summary show in the same interval?

Also, you have way too little battery for that system, should be at least 6 if you adhere to the pylon/victron requirements.

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eggi0711 avatar image
eggi0711 answered ·

Attached the system summary and ac consumption

summary.pngac-consum.png


summary.png (17.4 KiB)
ac-consum.png (41.7 KiB)
4 comments
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nickdb avatar image nickdb ♦♦ commented ·
You using individual or total of all phases regulation?

I guess the question is (you cut off the numerical summary from the screenshot) - is the rest of the usage correct or is this only 1/3 of the view.

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eggi0711 avatar image eggi0711 nickdb ♦♦ commented ·

I'm using total of all phase regulation

phase.png

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phase.png (38.2 KiB)
nickdb avatar image nickdb ♦♦ eggi0711 commented ·
Stupid question. The remote console is showing you the output/input separately of L1-L3?
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eggi0711 avatar image eggi0711 nickdb ♦♦ commented ·
Yes, each phase is listed separately in the console.

I'm without a clue, pls let me know if you need any further data or have any ideas.

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jay-123 avatar image
jay-123 answered ·

I have a system with 2x US2000. If I start at night with 100% and discharge my two US2000 until 15% I can use more than 4,5kWh. Perhaps you can test your system with just one US2000...

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maha avatar image
maha answered ·

Did you set the capacity correctly? 150Ah?

1661894513019.png



1661894513019.png (71.4 KiB)
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Guy Stewart (Victron Community Manager) avatar image
Guy Stewart (Victron Community Manager) answered ·

Hi @eggi0711,

It looks like there is some communications connectivity issue between one of your MPPTs and the GX device.

So not all of the solar production is getting reported and recorded.

Please check the communications cables between the MPPT and GX device to make sure that they are secure (remove and re-insert if necessary).

Given you have two MPPTs, you might have to test them in isolation (disconnecting or isolating one, and then the other) to identify the issue.

If they are different models, check the device list in VRM and see if one of them has identified itself as not reporting.


1 comment
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nickdb avatar image nickdb ♦♦ commented ·
Doh! Completely missed the second charger. Eagled-eyed Guy :)
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