[RE-wrenches] Inverter for fire protection pump

[Joel Davidson]

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" <ray at solarray.com>
To: "RE-wrenches" <re-wrenches at lists.re-wrenches.org>
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
> ray at solarray.com
> 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
>> ray at solarray.com
>> 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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