[aprssig] backup pwr systems - slightly off-topic
derek at dkoonce.com
Mon Dec 11 00:36:19 CST 2006
I have looked at these systems. Most on-grid systems will shut down if
they detect the power grid shutting down. They will not power the house
in this state unless one has a battery back-up system. And then the
system will disconnect the house from the grid to prevent "islanding".
Bruce Gordon wrote:
>What you describe is exactly a grid-tie inverter, just not so large as those
>used in all house or larger systems. I have never seen how they protect
>themselves and others from the hazards of tying to the grid but I can't
>think of a reason that it couldn't be done in a smaller unit. Might burn up
>a little of that "copious free time" however.
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