I need to reconfigure my system for my RV.
At the moment, i’m running ESS.
Due to law, I cannot use ESS anymore.
I have to use a blue CEE 16A plug. Fixed connections are not allowed. And no feedin is permitted.
Hub 2 or Hub 3 assistants are mostly deprcated.
If I configure the system as a simple power inverter, it will charge the battery from grid. Because of high energy prices, the batterys should not charged from grid in any case. Grid is only backup and for peak power usage, but switch over to the grid should be done very fast before an overload error or heavy flicker occours.
Hi.
ESS works fine.
With the AC ignore switch, it takes only a few seconds for grid connect. When the SOC is good, no charging from grid.
If I use an external relay, it takes about 1 minute. The MP2 will perform some internal tests every time.
But if I read the manual, ESS should not used with plugs.
And with ESS, I see some feed-in even if I disabled it. Around 0,2 kWh per day. Feed-in is billed like consumption, 0,6€ per kWh because there is an “always positive” grid meter installed.
The reference ‘without plug’ probably refers to the ‘normal Schuko sockets’ … these can also be plugged in upside down. This cannot happen with your blue CEE. So there is nothing to be said against it.
The very low feed-in must be accepted, as the larger loads must always be levelled out at 400W/s.
But what speaks against the longer connection to the grid?
What do you use in your mobile ?
Just came along that Topic. Having all the necessary Victron components in my RV I thought about setting them to ESS and I could use the extra solar energie from the MPPT in the house while the RV is just parked in the garden.
Only risk I see if the blue CEE gets unpluged from the RV there could still be power on the socket thats mounted on the car.
But shouldent the LOM setting in the Multi prevent this?
By the way. I have “Solar and Wind priority” active in RV but thats not realy what I want. In case the RV is parked in the garden and the fridge etc. is on. The Multi pulls all that from the grid at night. I want it to only draw from the grid when there is no sun and not enough SoC. Thats why I thought about ESS
Of course, ESS makes perfect sense for you at home. After all, it’s your system … you can do whatever you want with it.
At marinas or camping sites, regenerated power could certainly lead to problems.
Or you can simply use the normal wizard for disconnecting and reconnecting to the grid according to certain specifications … ESS / load etc.
Without mains power, the Multi (immediately) disconnects the connection to the ‘blue CEE’ junction box …
Depends on the selected grid code.
With some grid codes it will try to support the grid and for that the input keeps connected for 1-2s.
In that time you could touch the contacts of the plug and get shocked.
Not RV, but a 48V LFP home system. Similarly, zero feed-in should be obeyed. Started with ESS assistant, but there is no way to zero feed-in, when a big load (2kW) switches off.
So, I forgot about ESS and followed the directions for Virtual Switch (cannot coexist with ESS).
In VEConfigure, Virtual switch tab, at Usage select dedicated ignore AC input.
Then, in Ignore AC Input (sub)tab, you can set at what conditions the AC in relays will be activated. In my case in high load and/or low SOC. Then, by trial, set the voltage at which the AC in will be disconnected.
