An unconnected grid-connect inverter.

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An unconnected grid-connect inverter.

Postby Chaff_Cutter » Thu Nov 13, 2014 2:26 pm

Hi fellow forumites,

I have a simple question.

Can I use a grid-connect inverter in an off-grid system?

The reason I ask is that there seems to be many more available, both new and second hand, compared to off-grid varieties.

This appears to bring the price down, especially in the secondhand department.

Cheers,

Scotty
If it all gets too hard, just remember we are talking monkeys floating through the universe on a spaceship called Earth!
Chaff_Cutter
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Re: An unconnected grid-connect inverter.

Postby Tracker » Thu Nov 13, 2014 3:31 pm

..
NO... NO... NO...and... YES .. :o

A grid Inverter needs the GRID as a reference, to match to. (generally)
It also needs somewhere for the power to go.. they can only work "Flat Out"...

but... If you have an OFF-GRID system (PV/ChargeControl/Battery/Inverter).. it is possible to attach a GRID INVERTER, provided you have an artificial way of USING all that power..

So, whilst the GRID INVERTER can be bought for $50, you just need the extra $5000 (plus) in other stuff, to make it work.. :cry:
..
.
Retired Engineer and keen PV experimenter - Always ready to learn and share.
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Tracker
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Re: An unconnected grid-connect inverter.

Postby Chaff_Cutter » Thu Nov 13, 2014 4:10 pm

Hmmm, just as I suspected. Just needed confirmation.

Thanks 8-)

Scotty
If it all gets too hard, just remember we are talking monkeys floating through the universe on a spaceship called Earth!
Chaff_Cutter
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