I wonder if anyone can help me.  I have a GROWATT SPF-5000-ES Inverter with 6 x 330w panels and 4 x 200A gel  batteries (48v) . Wat will the recommended "max charging current" and "Max utility charging current" settings be for the installation. 

Thanks 

Matt 

8 hours ago, MattR said:

What will the recommended "max charging current" and "Max utility charging current" settings be for the installation.

It depends on your exact battery model. Generally, lead acid is charged at 0.15C, so for your 200Ah battery, that would be 200 x 0.15 = 30A. But your battery might be specified to be charged at more or less than this.

Thanks for the response. Should the two values be different values on the Growatt or should they both be set to the same value, in this case 30A as mention. Will it have an impact on the charging rate of your solar if the "Charge source priority" is set to Solar and Utility. I see the "Maximum charging current"  states that it should be set for "Max. charging current = utility charging current + solar charging current" and the "Maximum utility charging current" states that if the Maximum charging current is smaller as the  Maximum Utility charging current, it will use the Maximum charging current setting. 

 

Edited April 22, 20215 yr by MattR

3 hours ago, MattR said:

Should the two values be different values on the Growatt or should they both be set to the same value,

Sorry, I forgot to address that part of your question. The 30 A should be the maximum total charge current.

The maximum utility charge current is up to you; how kind do you want to be to Eskom? Or how impatient are you to get the battery charged?

Since 30 A isn't all that high, you might as well set the maximum utility charge current to 30 A as well.

Even with 30 A on both settings, you'll never get more than 30 A total. Assuming that it works as per Axperts, as I expect it to.

Thanks for your replay, that answers my question. 

Hi. 

How do you set a Growatt 500es inverter not to charge from utility?

11 hours ago, Paulvj1 said:

Hi. 

How do you set a Growatt 500es inverter not to charge from utility?

Unplug it
Or set the Grid Charge Rate to 0

Edited October 21, 20214 yr by WannabeSolarSparky

Setting parameter 14 to OSO will do it for you.

Setting 14 OSO = Solar energy will be the only charger source no matter utility is available or not.

This is how I have my system and it works.

Setting 14 should do what you asked but remember that if you are using lithium batteries with a bms, the bms will override it to protect the batteries. 

Good day, I'm having an issue with my charging of my cfe5100s Li from my growatt 5kva spf5000es. Charging Amp 30, I'm getting error 19 and no charging to he battery on the panel. Only using utility no solar at the moment.