question

jonjex avatar image
jonjex asked

Preventing Grid charging

Our sysem will go into sustain mode(batteries are at 40%) and charge form the grid as well as PV in the morning.

How do we prevent if from going charging from the grid at all ?

ESS
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2 Answers
Paul B avatar image
Paul B answered ·

When using Ess assistant set the Grid setpoint to say 50w

I also Open and close the AC1-in when I dont need the grid so that Freq shift will work on my Grid tie inverter, so it turns OFF when the batteries are full

plus I also do the Below in conjunction with a ccgx and generator Autostart, the Autostart makes AUX1 Hi or Low using the relay on the CCGX triggered by the Generator Autostart parameters

I am using a grid Tie inverter connected to the AC1 out of my Multiplus 48/5000 unit.




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boekel avatar image
boekel answered ·

Your batteries are below the sustain voltage, so you have to lower the sustain voltage to prevent charging.
I assume you have lithium batteries?

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