Hi Victron enthiousiast, I recently completed my home ESS-Backup system and I am still learning. [Afbeelding van WhatsApp op 2025-01-21 om 18.37.35_a33d2d35] 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-Sy…

Hi Pieter, looking good! I am from the souh as well and designing as system at present. I am still hesitating to pick up on Multi RS Solar and contemplating to go with MP2 despite the lower efficiency. What is still holding me back howerver is the audible noise of the old ladies… What is your perc…

[image] PieterD: Hager-ESS Switches Hoi Pieter, why do you use 2x Hager-ESS Switches? With one you should be able to switch between grid and MP2 backup power/AC out? Groet Hans

If you want to switch it safe and with NL regulations you need 2, both on ac in and out

Hi Marc, I am still in design phase of my system and learning. If you connect grid to input1 of Hager ESS switch, and MP2 AC Out to input2 of Hager ESS switch, and all my critical loads to output of ESS switch, then this should be ok? Where is the error in my logic? Do you have a sketch of your el…

Yes that will work, but you should place a switch on ac in side to i dont have them, because i dont need them, but if you want to be able to switch ess like that, you need two for safety reasons [IMG_6985] See also, page 56: https://www.victronenergy.com/upload/documents/The_Wiring_Unlimited_book…

But you only need one switch to do this. [52308-unbenannt]

Thanks, I designed it slightly different. One ESS switch and 2 “werkschakelaars” or fuse/automaat in AC in and AC out. I will check your PDF book. Thanks!

Yes but thats a grid parallel system

Thats possible too, i dont have a bypass, just breakers on ac in and out (aardlek automaten) dont have the need for a bypass

Be careful with bypassing. I have the Hagers SFT440 as well. Best to disable the loads, all groups on the AC1 before switching. Reason is that the N can have a slight delay comparing to Phases which causes unwanted behavior on the loads, meaning severe over voltage. I used a big label to state disco…

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

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

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