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Thanks agarg, I understand your remark. Do you think that I can add a small Sine Wave Inverter as a sync source to this micro grid and let the HMS-2000 do the bulk of the work. Or when I AC couple these two sources, one gets crazy and blows up the other.

Hi Francis, I want to use the HMS-2000 as a backup for power blackouts by connecting a 48V battery at one of the solar panel inputs and configuring the HMS in zero export mode. I use a transfer switch to isolate the house from the grid. To use the inverter during a blackout, I need to...

Hi I'm investigating if it is possible to use a HMS-2000 as a backup Inverter using OpenDTU as management system. My plan is as follows, one of the 4 solar panels inputs of the HMS-2000 I make switchable between a 50V panel or a 48V LiFePo4 battery. The HMS-2000 will be configured for Zero...

Hi I ran in to a brand called SRNE solar. They offer 120V and 230V hybrid power walls and various other product. Does anyone have experience with this brand, inverters and or power walls. I have seen various messages that talk about SRNE but could not find information about the quality that...

Dear solar enthusiasts, I'm planning to build my first battery pack and need confirmation on how to connect my BMS. I plan to use a JBD-AP20S003S BMS and made a drawing for it. Can you comment on if my battery pack is correct connected? I do have a few other questions. Bluetooth interface: Can...

thanks ashleyL

I looked to see if it could be downloaded, but I could not find the link. Looks like there is a new version but not yet available. Is PVkeeper official GroWatt software?

OK i got it.

I mend dumb question from my side ha ha, thanks for helping out it's appreciated

Dumb question but where can I get PVkeeper from I have been looking on Google but I don't see it there

correct, well seen

75% is low but not and unusual number. Panels have an efficiency of 90..97% depending on the heat of the solar cell, The inverter runs between 93..97%, Wire conductance is 98% effective, Panel faulting is between 90..95% Multiply these numbers, and you know what you can expect.

Thanks for your tip its appreciated, I will check it out.

Thanks for your tip, I will check it out.

About wind load, a while ago I dove in it and came up with some formulas for drag and lift. See this article, have fun https://diysolarforum.com/threads/wind-load-drag-and-lift-on-solar-panels.42711/

Dear solar enthusiast, I have a simple question. I live in Mexico Querétaro and want to buy LiFePo4 cells. I don't know any business in MX where you can buy these cells. I'm looking for a warehouse in Texas or other state where they sell good reliable cells for a good price. I want to import...

I raised a similar question in this post, My conclusion is it's not a problem as long as you remove the inside NG bond in the inverter, which is active during bypass mode. If you don't you have two NG bonding in your network and that may result in leak currents that run over equipments not...

Thanks, I read your blog and saw that building your own batteries is quite affordable.

Hi readers, I recently have jointed this forum and posted two questions, one about drag on solar panels and one about the architecture of the GroWatt SPF3000. I don't see these posts showing up in the new post list, meaning hardly anyone will respond to it. Have I forgotten to do something? What...

Dear readers, I'm planning to install a SPF3000 inverter as a backup in and existing house. I would like to have feedback from people who have experience working with the SPF3000 or a similar inverter and who understand electrical installations for housings. The location is Querétaro, Mexico and...

Your lucky I developed a system like that. I have a backup for 1KWh 600W and my cost price is 500USD Let me know if your interested

Hi Solar enthusiasts, I have a question. I have made a study of drag and lift on solar panels. There are three ways to calculate drag and lift on solar panels, one is according to the rules of 'ASCE 7-10, one based on formulas use in DF Dynamic fluid theory and one using Computational Fluid...

for sure :)

Yes I have made a study to calculate wind load and have something. I have a question about it too. If you're interested, I can share it with you. Let me know