My 3-Phase Home-based ESS-Backup System in the South of the Netherlands

Hi Victron enthiousiast,

I recently completed my home ESS-Backup system and I am still learning.

My systems consiste out of:

  • 3x Multiplus-II 5000/48
  • Cerbo-GX MKII
  • Lynx Distributor & Lynx Power
  • ET112 Meter for metering my 1-Pase PV-System (2kW Inverter / 1.860WP / S-orientation)
  • ET340 Meter for metering my 3-Phase PV-System (12Kw Inverter / 18.810WP / OW-orientation)
  • 3x Seplos Mason 280L DIY Cases equiped with EVE-LF280K-280Ah Cells (3x 15kW = 45kW)
  • 2x Hager-ESS Switches to enabling switching the Grid-feed directly to the sources or via the ESS system
  • 70mm2 Accu cables
  • Blue Systems DC-Switches to sepperate the Accu-Packs from the DC-Distribution system. Selected these as they can handle continue 350A at 48V and 600A at 48V for 5 minutes.

I would like to thank my Son for the guidance in this project :slight_smile:

4 Likes

Hello @PieterD
welcome to our community. Very interesting setup.

I would right have two questions regarding your system:

  • To be honest, I never thought about buying case and cells separately to build my battery. Instead I just bought stock US5000 :slightly_smiling_face: Would you mind sharing your motivation to go down that road?
  • Your Hager ESS-Switches sound interesting. Can you share the model and maybe a picture? What makes such a switch an ESS switch?

Thanks in advance!

Hi Alfredo, Thanks for your interest.

I have choosen for buying the cells and case incl. BMS and Balancer sepperatly to safe on shiping cost. The cells where availble for a very good price here in the Netherlands and the Seplos cases were on stock in Poland. As both came in larger quantities from China this saved me a lot of transport cost and the price was based on DDP. So no hassle with custom duties, transport cost, etc.

Concerning the Hager Switch this is the HAGER SFT440 - 1-0-2 quadapolaire 40A-switch. The bust you buy them via Amazon. They are very cost effective there. This switch has three possitions: 1 - Off - 2 suited for switching L1-L2-L3-N at 40A.

I hope this helps.

Br Pieter

1 Like

Maximum respect, @PieterD . I thought, Iā€™m adventures to build a Victron DIY DESS on my own :upside_down_face: Just watched the video, what it means to build a Victron System like yours with a DIY battery pack on top. Awesome. Thanks for sharing and for the additional details.