BJECT: [RE-wrenches] DC-DC converter
for SQFlex
Hi Wrenches,
I'm assisting a customer and well person in
replacing a failed Lorentz ETApump (after 15 years of intermittent use).
We're looking for a quality DC-DC converter to power a not-yet- ordered
Grundfos SQFlex 6 SQF-3 from a 24 V Surrette ba
Wrenches
There used to be a product that changed battery strings from parallel to
series to boost voltage, l know the patent holder, let me ask if it can
work here that is if there are enough's batteries.
Jerry
On Tue, Aug 21, 2018, 8:17 AM Gary Higbee wrote:
> Hi Wrenches,
>
> I’m assisting a
enches] DC-DC converter for SQFlex
Hi Wrenches,
I’m assisting a customer and well person in replacing a failed Lorentz ETApump
(after 15 years of intermittent use). We’re looking for a quality DC-DC
converter to power a not-yet- ordered Grundfos SQFlex 6 SQF-3 from a 24 V
Surrette battery bank
Wrenches,
Thanks, all, for your responses. This recently retired ER Doc customer does
have an inverter system (old SW’s, one not so good on the scope). Grid and also
two generators, Wanted a DC solution also. I like the Grundfos pumps so far,
not their opinion to double the battery bank so
The customer needs education! The SQ should be powered from 240vac and
the CU can run a generator input if needed. AC power should be designed so
that it never goes away offgrid in my opinion. There should be a water tank
that can give time to make repairs.
Dave Angelini Offgrid Solar
"we go
let me make a stupid suggestion, why not dedicate an inverter? Ask
Grundfos if modified sine wave would be OK or use something like the
Outback FXR sine wave inverter or the Magnum, or the Schneider.SW4024.
On Tue, Aug 21, 2018 at 1:17 PM Gary Higbee
wrote:
> Hi Wrenches,
>
> I’m assisting a
HI Gary,
The customer is always right, ha.
If they want a DC option, I know you can find the right part.
As to how big of a DC DC converter, yea I would want it to handle whatever the
pump could draw. If there is any way that a valve could be closed or a pipe
frozen or clogged, the pump will
Higbee
Sent: August-21-18 11:18 AM
To: re-wrenches@lists.re-wrenches.org
Subject: [RE-wrenches] DC-DC converter for SQFlex
Hi Wrenches,
I’m assisting a customer and well person in replacing a failed Lorentz ETApump
(after 15 years of intermittent use). We’re looking for a quality DC-DC
converter
I agree that an inverter is your most viable voltage converter. There is
no good reason to go DC to DC that I can see. The other option would be
to switch the array to operate the pump directly. Use a Charge
controller that operates the array at the same voltage the pump needs to
operate at,
Is there an inverter, you could power it with 120 or 240V AC?
On Tue, Aug 21, 2018 at 11:17 AM Gary Higbee
wrote:
> Hi Wrenches,
>
> I’m assisting a customer and well person in replacing a failed Lorentz
> ETApump (after 15 years of intermittent use). We’re looking for a quality
> DC-DC
Hi Wrenches,
I’m assisting a customer and well person in replacing a failed Lorentz ETApump
(after 15 years of intermittent use). We’re looking for a quality DC-DC
converter to power a not-yet- ordered Grundfos SQFlex 6 SQF-3 from a 24 V
Surrette battery bank (wish it was 48!). The pump draws
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