Friday, February 10, 2012

Automatic switch between offgrid and ingrid

Just installed the automatic swich box for my television corner.

The schematic is already published in a earlier post.

It works well, test if batteri voltage is high enough to drive television watching, light and dvbt antenna. If voltage is ok, then turns on the 12 - 230 volt inverter.

If voltage get below a preadjusted level, it turns to gridtie electricity, and turn off inverter.


The inverter placed in the cellar. Connected to the offgrid 12 volt interconnection board.


The controller circuit, yes i know, it don't look beautiful, but it works as expected ;)


Adjustment off the minimum offgrid voltage accepted, before automatic switching to grid-tie.


Gridtie connection

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