Allan.....According to the IO101 literature it is rated at upto 265VAC......however in all its wiring "drawings" it only shows one hot, one neutral and a ground!?? I am puzzled.....? Kirpal
On Wed, Apr 6, 2011 at 2:23 PM, Allan Sindelar < al...@positiveenergysolar.com> wrote: > Kirpal, > I believe that the IO101 is only designed to accept 120VAC, not 240. The > supplied AC pigtail is 15A 120V, and it uses a contactor, which would be a > specific voltage only. Unless I'm mistaken, you don't want to supply 220 > (240) VAC. > > I don't have answers for your other questions. > Allan > > *Allan Sindelar* > *al...@positiveenergysolar.com* <al...@positiveenergysolar.com> > NABCEP Certified Photovoltaic Installer > NABCEP Certified Technical Sales Professional > New Mexico EE98J Journeyman Electrician > *Positive Energy, Inc.* > 3201 Calle Marie > Santa Fe, New Mexico 87507 > *505 424-1112* > *www.positiveenergysolar.com* <http://www.positiveenergysolar.com/> > > * > * > > > On 4/6/2011 2:55 PM, Kirpal Khalsa wrote: > > Hi all....so I have a pumping project using a grundfos SQ Flex pump....It > will operate on the grid when grid is present and then switch back to solar > ready if the grid power should fail.....here is the set up... > 5-Sanyo HIT 220's Vmp non temp adjusted is 213VDC > Pump is SQFlex 16 SQF-10 will have CU 200 controller and IO101 AC input > box.... > > System has a pressure tank and pressure switch which will be used instead > of float switch as there is no storage tank at or above ground level.... > This system is a retrofit project to an existing well pumping system...... > Here is my questions: > 1. Pump and CU 200 controller are rated for upto 300VDC but IO 101 > Controller is only rated for 225VDC.....is that open circuit or max power on > the modules.... > 2. The Grundfos wiring diagrams only show 2 wires and a ground leaving the > IO101 going to the CU200.....What is happening when there is 240VAC > supplying the system and what happens when it switches back to DC how is the > power transmitted on those wires? What happens to the second leg of the > 240VAC generator/grid input? > 3. Has anyone done one of these Grundos SQFlex back up water pumping > systems connected to a pressure tank and did it operate as expected? > Grundfos does not offer tech support.......that is kind of a bummer.... > Thanks for any advice or help.... > > > -- > Sunny Regards, > Kirpal Khalsa > NABCEP Certified Solar PV Installer > Renewable Energy Systems > www.oregonsolarworks.com > 541-218-0201 m > 541-592-3958 o > > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > > Options & > settings:http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette:www.re-wrenches.org/etiquette.htm > > Check out participant bios:www.members.re-wrenches.org > > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > > -- Sunny Regards, Kirpal Khalsa NABCEP Certified Solar PV Installer Renewable Energy Systems www.oregonsolarworks.com 541-218-0201 m 541-592-3958 o
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