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timaios2000 avatar image
timaios2000 asked

MPPT 250/70 with 32 Volt Modules

I would like to run 32V Modules with the MPPT 250/70 that is build into SmartSolar 2 GX.

Which Systeme Voltage do I have to select in the MPPT Calculator? 24V, 36V or 48V?

https://mppt.victronenergy.com#djM7ZXlKc1lYUWlPalV5TGpNMU1EYzRORGtzSW14dVp5STZOUzR5TmpRM01ERTFPVGs1T1RrNU5qY3NJbTVoYldVaU9pSkJiRzFsY21Vc0lFNWxkR2hsY214aGJtUnpJbjA9O2V5Sm1aV0YwZFhKbGN5STZXeUoyYVdOMGNtOXVRMjl1Ym1WamRDSXNJblpsUTJGdUlsMHNJblJsY20xcGJtRnNJanAwY25WbExDSmhiR3h2ZDA5MlpYSnphWHBsWkNJNmRISjFaWDA9O2N1c3RvbSw1LDEsNDgsLTEyLDcwLDQ4LDcuNDMsMC4wNCw3Ljg2LDI1NSwzNC4zMiwtMC4zNCw0Mi40OSwzMCw2

I want to use it with a Pylontech US5000 48V

Thanks for your help


voltage
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2 Answers
klim8skeptic avatar image
klim8skeptic answered ·

@timaios2000 system voltage = battery voltage

Tip, use the "share config" button and copy link.


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timaios2000 avatar image
timaios2000 answered ·

Thanks klim8skeptic

thus, when I'm charging a Pylontech US5000 48V, the system voltage is 48V?

here is -> my calculation

Although, the Calculator doesn't like 6 modules in a string for the MPPT 250/70, could I do go with 6, given the modules will be installed in 90° on the facade?

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klim8skeptic avatar image klim8skeptic ♦ commented ·

@timaios2000 when I'm charging a Pylontech US5000 48V, the system voltage is 48V? Yes

Link seems broken.

the Calculator doesn't like 6 modules in a string for the MPPT 250/70, could I do go with 6, given the modules will be installed in 90° on the facade?

6 panels in series will have a voltage higher than is safe for the 250-70.

However a 3 series x 2 parallel array will work just fine.

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Michelle Konzack avatar image Michelle Konzack klim8skeptic ♦ commented ·

...but then he can go with a much cheaper 150/100

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klim8skeptic avatar image klim8skeptic ♦ Michelle Konzack commented ·
@Michelle Konzack best to make use of the mppt built into the Easysolar.
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