Best way to connect/configure LVD when using Smart Victron 12/375 inverter and MPPT 100/20

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shedpo asked Nov 20, '20

Best way to connect/configure LVD when using Smart Victron 12/375 inverter and MPPT 100/20

Off grid project. Only one starter battery. I don't want to discharge below 12.5 volts to give the battery a chance of lasing. The inverter is going to have a tiny load (<10 watts). I'm wondering what is the best way to set up a low voltage disconnect? Both the MPPT and Inverter have programable disconnect. Inverter has a remote switch, so it can be wired to the load terminals of the MPPT. Is this the best way to wire things up? I suspect that if the MPPT shuts off the remote switch, the inverter will draw less power than it might otherwise draw while in standby. Thoughts?

low battery warning

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Answer 1 · 2020-11-20T19:31:37Z

alex-rhys-hurn answered · Nov 20, 2020 at 07:31 PM

Hi,

I am doing the same as you. You have to read the manual carefully as it matters which hole on the remote switch port you use, left or right.

But yes, as you suggest having the MPPT Load output turn off the inverter works reliably.

Inverter should be connected direct to battery (with fuse) and then the remote switch port connected to the MPPT load output.

Then program the MPPT to switch off as you wish.

Here is a picture:

5.jpg (67.8 KiB)

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