SQ and SQE application differences [RE-wrenches]

Steve Willey swilley at pwi.net
Thu Aug 11 11:23:53 PDT 2005


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SQ and SQ Flex are good and seem to run on mod square wave as you point out. 
But isn't SQE designed to give constant pressure and avoid a pressure tank 
by running (perhaps slowly) all the while water is being used at any rate of 
flow?  I have understood that this would be a very inefficient use of 
off-grid inverter power. Or is there a different application for SQE it I am 
not familiar with?

Steve Willey, (formerly Backwoods Solar)
phone (208) 263-4788
Steve Willey


>
> Assuming that the SQ and SQE also have use something similar to make
> variable speed possible with a 240 VAC pump motor, I would assume that

> my suggestion to use one of these pumps with a pair of DRs is pretty
> lame. Rats. I also hate it when I'm wrong.
>
> On the other other hand, I bet the system in question would work fine
> if they could simply change to a conventional 3/4 HP pump.
>
> Matt T

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