Re: [RE-wrenches] TL inverter with long DC Feeder

Dave: Several reasons to locate the inverts at the residence: 1.The Vmp at high temperature is 322 volts Moving electrons at 322 volts is preferable to moving them at 240 volts. 2.I'd rather pull 8 #8s than 2 3/0s plus whatever neutral and ground required. 3.I'd have to argue

Re: [RE-wrenches] TL inverter with long DC Feeder

Jeremy: With 4 strings of PV into 2 transformerless inverters, I would need 2 of them. At $579.00 each this is a deal killer. William Gradient Cap_mini Lic 773985 millersolar.com 805-438-5600 From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-

Re: [RE-wrenches] TL inverter with long DC Feeder

William, Just to pile on here, if you're running 4 pairs of low-voltage dc for 400' you may be better off just sticking the inverters right there at the array and making the long run as 240Vac. #2s on each inverter output (22A?) would work, keeping voltage drop to 1.3%. If you choose to combi

Re: [RE-wrenches] TL inverter with long DC Feeder

Use the Midnite SOB series. They have a 4 pole Jeremy Rodriguez, President All Solar, Inc. 1463 M Penrose Colorado 81240 719-372-3808 office 719-372-3804 fax www.asolarelectric.com Sent by Jeremy's iPhone. Sorry for typos and shorthand! > On Oct 7, 2014, at 12:41 PM, William Miller wrote: >

Re: [RE-wrenches] TL inverter with long DC Feeder

William, What is your string configuration? The SMA TL inverters have a very low operating voltage window, going down to 125 Vdc, but you still have the issue of the disconnect. [cid:image001.png@01CFE248.3F9A1920] Have you looked at ABB’s (PowerOne) TL inverters: http://www.abb.us/product/us

Re: [RE-wrenches] TL inverter with long DC Feeder

Ryan: Thanks but the maximum is 3 circuits and we have 4. william From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Ryan Mayfield Sent: Tuesday, October 7, 2014 11:40 AM To: 'RE-wrenches' Subject: Re: [RE-wrenches] TL inverter with long DC Feeder Eaton

Re: [RE-wrenches] TL inverter with long DC Feeder

August: Or an Outback or Midnite combiner without the combs, and a plaque warning to not disconnect under load. William Miller Solar > On Oct 7, 2014, at 11:30 AM, August Goers wrote: > > William, > > I see now from the separate post from Michael Kelly of Solectria that indeed > you cann

Re: [RE-wrenches] TL inverter with long DC Feeder

Eaton has a line of disconnects that may fit the bill: http://www.eaton.com/Eaton/ProductsServices/Electrical/ProductsandServices/ElectricalDistribution/SwitchesandDisconnects/SolarDisconnects/index.htm#tabs-2 Ryan From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.or

Re: [RE-wrenches] TL inverter with long DC Feeder

William, I see now from the separate post from Michael Kelly of Solectria that indeed you cannot combine your two strings with this inverter. I think that leaves you stuck with four separate disconnect switches unless someone on this list knows of a four pole DC rated disconnect switch. Or, you’

Re: [RE-wrenches] TL inverter with long DC Feeder

Hi William, The 5200TL has two independent MPPT zones, each with two string inputs (essentially a two string combiner on each MPPT zone). The 'combiners' can't be bypassed at the moment, and the max fuse size that is allowed is 20A. Sorry, but fuses greater than 20A are not allowed; they would

Re: [RE-wrenches] TL inverter with long DC Feeder

August: I have been told I can't combine upstream of the inverter. William Miller Solar > On Oct 7, 2014, at 8:03 AM, August Goers wrote: > > William, > > We have bumped into similar dilemmas when needing remote DC disconnects with > TL inverters. I believe the Solectria you are using has

Re: [RE-wrenches] TL inverter with long DC Feeder

William, We have bumped into similar dilemmas when needing remote DC disconnects with TL inverters. I believe the Solectria you are using has two MPPTs? Ideally, you would keep each string separate to benefit from the dual trackers – this would mean four DC disconnects if you went with a standar

Re: [RE-wrenches] Fall Protection Recommendations?

Guardian Fall Protection not only has great equipment but also sales support and training. They are newer than Sala but Guardian's equipment is as good and better. Their Tower Edge harness has a saddle which makes it super comfortable on steep roofs, and it is also removable which is ideal for lo

Re: [RE-wrenches] TL Inverters

The first gen of TL's did have a somewhat tight window for the DC window. However, the new SBTL-US-22 (3kW - 7700kW, with secure power supply) Start Voltage is 125, MPPT is 175-480 (max of 600Vdc) Also, for larger needs, the STP (12kW - 24kW) start voltage is 150, MPPT is 300-800V (max of

Re: [RE-wrenches] TL Inverters

Mark, The only thing I would add to all your good points is the addition of a 7700 watt TL which is of course perfect to stay under the 20% for load side connection of a 200A service. Bill - Original Message - From: Mark Byington To: RE-wrenches@lists.re-wrenches.org

Re: [RE-wrenches] TL Inverters

Just a word of caution to those not having experience with SMA TL inverters - the larger units (7-11 kW) have an extremely narrow input DC voltage window. Depending on your module voltage and string design, all you need is a module or two to be shaded to fall out of the MPPT input voltage range