Re: [RE-wrenches] DC-DC converter for SQFlex

let me make a stupid suggestion, why not dedicate an inverter? Ask Grundfos if modified sine wave would be OK or use something like the Outback FXR sine wave inverter or the Magnum, or the Schneider.SW4024. On Tue, Aug 21, 2018 at 1:17 PM Gary Higbee wrote: > Hi Wrenches, > > I’m assisting a

Re: [RE-wrenches] SOC and LFP batteries and TriMetric

Hi Allan, All LFP batteries can be charged to a much higher voltage than we will ever use. Some as high as 4.2Vpc. A disconnect voltage of 3.8 Vpc is typical protection voltage for LFP batteries which is below the well maximum charge voltage. Some recommend charging to 3.65Vpc, others a little

Re: [RE-wrenches] DC-DC converter for SQFlex

HI Gary, The customer is always right, ha. If they want a DC option, I know you can find the right part. As to how big of a DC DC converter, yea I would want it to handle whatever the pump could draw. If there is any way that a valve could be closed or a pipe frozen or clogged, the pump will

Re: [RE-wrenches] DC-DC converter for SQFlex

Hi Gary, The SQFlex is current limited to 8.4A regardless of voltage. I have not had positive experiences running SQFlex from DC voltage from a battery. It can work, but you will not get full output volume if you are restricted to 48VDC. The SQFlex is really designed to work with higher DC

Re: [RE-wrenches] SOC and LFP batteries and TriMetric

Yes, I just did. Ralph retired last year and I spoke with the new owner. In short, little change - use 2% of capacity for amp threshold and set CEF to 98% from default 94%. I was also told to stick with the default 14.1V voltage threshold, but that equates to 56.4V for a 48V system, which is

Re: [RE-wrenches] DC-DC converter for SQFlex

I agree that an inverter is your most viable voltage converter. There is no good reason to go DC to DC that I can see.  The other option would be to switch the array to operate the pump directly. Use a Charge controller that operates the array at the same voltage the pump needs to operate at,

Re: [RE-wrenches] DC-DC converter for SQFlex

Is there an inverter, you could power it with 120 or 240V AC? On Tue, Aug 21, 2018 at 11:17 AM Gary Higbee wrote: > Hi Wrenches, > > I’m assisting a customer and well person in replacing a failed Lorentz > ETApump (after 15 years of intermittent use). We’re looking for a quality > DC-DC

Re: [RE-wrenches] Non breakable RV modules

Prices are what they are for a premium, low volume product. They easily could be higher, but for a leisure type product, are not horrible. This YouTube guy has experimented with using Eternabond to tape down the perimeter of a module directly to the RV rooftop with pretty good success. He also

[RE-wrenches] DC-DC converter for SQFlex

Hi Wrenches, I’m assisting a customer and well person in replacing a failed Lorentz ETApump (after 15 years of intermittent use). We’re looking for a quality DC-DC converter to power a not-yet- ordered Grundfos SQFlex 6 SQF-3 from a 24 V Surrette battery bank (wish it was 48!). The pump draws

Re: [RE-wrenches] SOC and LFP batteries and TriMetric

A follow up question to all of this: Does anyone know what parameters a BMS is using to determine SOC for lithium? A project I installed uses the Orion BMS jr for lithium batteries. It uses a normal shunt, voltage and also measures internal cell resistance to determine SOC. Jay Peltz Power

Re: [RE-wrenches] Non breakable RV modules

They look good, but the price/ watt is going back to the 1990s.:-( What's your recommended attachment method for these? We get quite a few RVers calling, but I really am not into punching holes into fiberglass roofs with unknown structure beneath. Ray Walters Remote Solar 303 505-8760

Re: [RE-wrenches] SOC and LFP batteries and TriMetric

Allan, have you talked directly with Bogart? Howie On Tue, Aug 21, 2018 at 12:56 PM Sindelar Solar wrote: > Wrenches, > I would like to broaden this topic a bit, please: we're currently > installing our first Blue Ion LFP set (48kWh). I work almost exclusively > with existing off grid systems,

Re: [RE-wrenches] SOC and LFP batteries and TriMetric

In my opinion Blue Ion should help with this. When I was considering becoming a dealer they said they were going to get their Soc and temp data out to Outback and Schneider web portals. For me they never wanted to get their product out to major suppliers and I refused to deal with sales tax so

Re: [RE-wrenches] SOC and LFP batteries and TriMetric

Wrenches, I  would like to broaden this topic a bit, please: we're currently installing our first Blue Ion LFP set (48kWh). I work almost exclusively with existing off grid systems, often older systems most of which have TriMetric monitors, either the TM2020 or newer TM2030. Has anyone

Re: [RE-wrenches] Non breakable RV modules

These guys make some tough marine modules: http://www.cbcamerica.com/microsite/index.cfm?id=103682 Best, Chris Daum Oasis Montana Inc. 406-777-4309 or 4321 406-777-4309 fax www.oasismontana.com From: RE-wrenches On Behalf Of David Katz Sent:

Re: [RE-wrenches] Tapping Parallel Conductors

Hi Garrison, This is a new one for me - normally we always balance everything when dealing with paralleled conductors. NEC 310.10(H) talks about conductors in parallel and I can't see anything the explicitly forbids what you explained. To be safe, I think it is worth contacting the PE to double

Re: [RE-wrenches] Non breakable RV modules

Hi Jay, Look at the HQST Solar modules.Easy to find on Amazon for more information. Sent from my 'smart' phone so please excuse spelling and typos. -- Original message--From: JayDate: Tue, Aug 21, 2018 12:33 AMTo: RE-wrenches;Cc: Subject:[RE-wrenches] Non breakable RV modules Hi All

Re: [RE-wrenches] Tapping Parallel Conductors

Hi Wrenches, When making a supply side connection on parallel sets of conductors is it required to tap all conductors on each phase? I have a set of plans with an 800A interconnection on a 1200A service. Service has three parallel sets of 500MCM. Plans call for tapping just two conductors on

Re: [RE-wrenches] Non breakable RV modules

Speaking of these lightweight flexible modules, has anyone found a good non-penetrating way to install these on RVs? I had a friend do one with industrial double sided tape and its been working well, but maybe there is a better way. Something that would allow a small air-gap between the solar

Re: [RE-wrenches] Non breakable RV modules

Look to the 110-watt flexible panel from SunPower. Comes with MC connectors @ nominal 12V. Contact me offline for a spec sheet. marco On Monday, August 20, 2018, Jay wrote: > Hi All > > What are good options for a portable module for RV use. > One that you can move around, (it’s going to