Jump to content

System discharging below stipulated reserve SOC. What to do?


Bobster
 Share

Recommended Posts

Hi all,

See my signature for my hardware.

System is running in general mode.

According to PV Master I have
SOC Protect ON
DOD on grid 60%

Currently we have overcast weather. PV is low. Battery has been discharging. The system did start drawing from grid when SOC hit 39%. It held at 39% and drew from grid for about 15 minutes (according to portal) but then started drawing from battery again. Whilst I wasn't looking the battery got down to 26%.

I have observed this behaviour before and reported it to the guys I bought the kit from. Does this happen EVERY time? I don't know. It doesn't get down to 40% very often. 

OK... any ideas about what I should do (that I can do, I'm not an electrician)?

Edited by Bobster
Link to comment
Share on other sites

Battery is set as Battery-Box Pro 10.0

Settings are
Export Power Limit: On
Power Limit: 0
Back-Up supply: On
Detection Mod: Full Wave Detection
Battery Activated: On
Power Factor: 1.00
Charge Voltage: 56.4
Charge Current: 100.0
Discharge Current: 100.00
SOC Protect: On
Depth of Discharge (on-grid): 60%
Depth of Discharge (off-grid): Empty and can't be set.

Link to comment
Share on other sites

Well shoot! Now I go back into PV master and I see changes
Charge Voltage has moved from 56.4 to 56.5
Charge Current has moved from 100A to 90.23A

It wasn't me! I know that I don't know what those settings do or what they should be, so I leave them alone.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...