[RE-wrenches] would this work?

[Ryan]

You want to be careful when paralleling a Charge Controller and a Pump 
on a PV array. The Charge controller and pump can do interesting things 
to each other. I would suggest if doing this you either use blocking 
diodes on the pump and Charge Controller or you use a NO / NC relay and 
let the pump or Charge controller pick the appropriate position for he 
relay.

Ryan

Ryan Stankevitz
Technical Support Manager
MidNite Solar Inc.
ryan at midnitesolar.com
Office - 360-403-7207 XT 151
Cell - 207-416-2006
Skype ID ryan.midnite




On 6/6/2013 2:48 AM, toddcory at finestplanet.com wrote:
>
> so it might be possible to power the pump array direct and also charge 
> batteries through a hv mppt charge controller at the same time??
>
> todd
>
> On Wednesday, June 5, 2013 8:18pm, "jay peltz" <jay at asis.com> said:
>
> Hi Todd
> As bob-0 and Larry have said
> And the sqflex is a mppt unit, nothing else needed
> Jay
> Peltz power
>
> Sent from my iPad
>
> On Jun 5, 2013, at 7:30 PM, toddcory at finestplanet.com 
> <mailto:toddcory at finestplanet.com> wrote:
>
>     ok wrenches... here is a hair brained idea i came up with.
>
>     i have this customer with the grundfos pump being powered, array
>     direct by 10 astropower 75's in series... so around  170 vdc.
>
>     what would happen if a hv mppt charge controller were paralleled
>     with the panel output feeding the pump?
>
>     would the cu200 & charge controller mppt algorithms fight each other?
>
>     thanks,
>
>     todd
>
>
>
>
>     Sent from Finest Planet WebMail.
>
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