Hi Ray,
Thank you for your input. The pump is part of a fire protection system that
sucks water out of the swimming pool and pumps it to roof sprinklers with
fire retardant added to the water. I'll forward your email to my colleague
who has the details.
Best regards,
Joel Davidson
----- Original Message -----
From: "R Ray Walters" <[email protected]>
To: "RE-wrenches" <[email protected]>
Sent: Friday, August 27, 2010 7:23 PM
Subject: Re: [RE-wrenches] Inverter for fire protection pump
Forgot to mention the usual info: look at the pump to see if a smaller or
no surge Grundfos SQE might be able to handle the flow rate and pressure
needed.
Pumps are cheap, when you're considering multiple inverters......
Given what you mentioned (110 amp surge at 240 vac), I don't think even a
quad stack of Outbacks could do it. ( please ignore my earlier post)
A quad stack could run that, just not start it. Franklin makes a soft
start controller, that might work with that pump. What is the Horse power
rating?
R. Walters
[email protected]
Solar Engineer
On Aug 27, 2010, at 3:52 PM, R Ray Walters wrote:
Little beyond a pair of Outbacks, possibly a pair of Magnasine
inverters, or a quad stack of Outbacks.
R. Walters
[email protected]
Solar Engineer
On Aug 26, 2010, at 2:41 PM, Joel Davidson wrote:
Wrenches,
Our customer has a fire protection pumping system that operates at
240VAC and 22 amps with a 110 amps starting surge. The pump will only be
used for up to 4 hours in an emergency (but hopefully never). The
customer wants an inverter and battery (no generator or PV) in case grid
power is destroyed by fire. What inverter(s) do you recommend? Thank you
very much for sharing your off-grid knowledge.
Joel Davidson
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