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Inveter change over switch

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RodneyB

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For many years I have been installing Inverters and have used a very simple relay switch for automatic change over when there is a grid failure. It has worked no problem. I have always over sized the contact rating and put in line suitable fuse protection.

Of late I am finding with the introduction of new computers and screens etc that when there is a grid failure the equipment switches off and then on again, it does not stay on. I cant work this out.

It is not practical to run the load continuously from the inverter due to the unique power problems we have in Zimbabwe.

I am looking for additions to the circuit or a solution to the problem or even a totally new way of switching between grid and inverter.

Many thanks

Rodney
 

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The switch-over time for the relay contacts could easily exceed 1 cycle of the AC, add to that the start-up time for the inverter. Try a solid-state relay (like the P&B SSRT-240D10) and use an inverter with a stand-by function. E
 
Thank you for the information, I have had a look at the Datasheet, how would I connect it so that it would automatically switch between grid and Inverter.
 
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