XW6048 running a 1HP pump? [RE-wrenches]

[Phil Undercuffler]

Chris,

I think there should be no problem running a single hp sub pump with the
XW6048, even if it's a two wire pump.  In our informal testing here, we
were trying to test the XW's limits with an unbalanced 120v load.  We
had two electric heaters on as a background load (approximately 1200
watts total, one per phase), then hit it with a surge load of 120v
inductive motors all on one phase, and measured the voltage on both the
loaded and unloaded phase as well as AC amperage on the loaded phase.  

We reached the limits of our test circuit with two air compressors, two
routers, a chopsaw and a planer turning on at the same time, for a 133A
AC spike (not including the background heater load).  I don't think we
were even near the ultimate limit of the inverter.  Voltage regulation
between loaded and unloaded phases was impressive, not varying more than
7.2 volts.

In comparison, the old SW5548 (admittedly never known for its surge
capability) tripped offline with half that load.

 
------------------------------------------------------------

Phil Undercuffler
Director, Battery-based and Off-grid
Conergy, Inc.
Our World is Full of Energy
 
1730 Camino Carlos Rey Suite 103
Santa Fe NM 87507 USA
Office | 505.216.3841
Fax | 505.473.3830
www.conergy.us

------------------------------------------------------------ 
-----Original Message-----
From: Chris Daum [mailto:info at oasismontana.com] 
Sent: Monday, June 09, 2008 9:05 AM
To: RE-wrenches at topica.com
Subject: RE: XW6048 running a 1HP pump? [RE-wrenches]


Warren:

I have this 'application single phase motor chart' that says a 240VAC
pump
has a maximum single phase load of 1600 watts continuous, and locked
rotor
amps at 41.8....  I have found using this for worst case scenerios has
covered my derriere in terms of being conservative in load evaluation.
I
hate to 'guess' that this new inverter would handle this load (I am
cautious
about promoting new equipment!).  It SHOULD handle the 1 HP load, but I
don't want to offer it til I know.

I do have a call in to Xantrex tech support, but have yet to hear from
then.
I'll let you know what they say.


Chris Daum
Oasis Montana Inc.
406-777-4309 
 
 

-----Original Message-----
From: Warren Lauzon [mailto:windsun at wind-sun.com] 
Sent: Monday, June 09, 2008 7:40 AM
To: RE-wrenches at topica.com
Subject: Re: XW6048 running a 1HP pump? [RE-wrenches]


That seems a bit high, even for an AC pump. 1 HP is equal to 746 watts
(not
a true direct conversion, but close enough). So even if surge is 4x
that,
would 3000 watts/VA

........................................................................
....
......................
----- Original Message -----
From: "Chris Daum" <info at oasismontana.com>
To: <RE-wrenches at topica.com>
Sent: Sunday, June 08, 2008 2:46 PM
Subject: RE: XW6048 running a 1HP pump? [RE-wrenches]


>
> Sub pump.  I'm figuring a starting surge around 9600 - 10000W at 240
VAC.
Does 
> that
> ring true?


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