Search found 312 matches

by gtarolli
Sun Mar 15, 2020 11:23 am
Forum: FLEXnet DC
Topic: FNDC Shunt Question
Replies: 5
Views: 3994

Re: FNDC Shunt Question

I don't remember seeing any complaints about accuracy, and from my observations (3 shunts), I don't see any gross issues. The largest issue in OptricsRE is that inverter loads are truncated (not rounded) to the nearest amp (per leg), which can lead to a pretty significant error over time. If they we...
by gtarolli
Sun Mar 15, 2020 10:47 am
Forum: FLEXnet DC
Topic: FNDC Shunt Question
Replies: 5
Views: 3994

Re: FNDC Shunt Question

Possibly, but not necessarily. Errors can also cancel each other out.
by gtarolli
Mon Jan 20, 2020 5:43 pm
Forum: OpticsRE
Topic: Planned OPTICS RE Maintenance - January 20, 08:00 PST
Replies: 13
Views: 4812

Re: Planned OPTICS RE Maintenance - January 20, 08:00 PST

Also the deg. F chart is supposed to be yellow above 86.01 for Simpliphi 48v, around 9/16/19 my temp read 87.8 F and the line is still green. A bug?
by gtarolli
Mon Jan 20, 2020 5:35 pm
Forum: OpticsRE
Topic: Planned OPTICS RE Maintenance - January 20, 08:00 PST
Replies: 13
Views: 4812

Re: Planned OPTICS RE Maintenance - January 20, 08:00 PST

I think this is a bit off for 48v LIFP Simpliphi: "variableName": "V", "colorRange": [ { "from": "0", "to": "42", "color": "red" }, { "from": "42.01", "to": "57.60", "color": "green" }, { "from": "57.61", "to": 'above', "color": "red" } ] 10% SOC is 48v at C/2 load, probably 49v under a reasonable l...
by gtarolli
Mon Jan 20, 2020 11:00 am
Forum: OpticsRE
Topic: Planned OPTICS RE Maintenance - January 20, 08:00 PST
Replies: 13
Views: 4812

Re: Planned OPTICS RE Maintenance - January 20, 08:00 PST

Many thanks Bryce, and thanks for all the support!
by gtarolli
Mon Jan 20, 2020 10:54 am
Forum: OpticsRE
Topic: Planned OPTICS RE Maintenance - January 20, 08:00 PST
Replies: 13
Views: 4812

Re: Planned OPTICS RE Maintenance - January 20, 08:00 PST

What about Simpliphi 48v? that's what I was referring to ...
by gtarolli
Mon Jan 20, 2020 10:32 am
Forum: OpticsRE
Topic: Planned OPTICS RE Maintenance - January 20, 08:00 PST
Replies: 13
Views: 4812

Re: Planned OPTICS RE Maintenance - January 20, 08:00 PST

Thanks for the changes, esp. the Simpliphi battery support. I see the historical graphs are now colored reasonably, but the battery icon still appears yellow at < 60% SOC I believe. I think the graph changes to yellow at 30%? Also what are the yellow and red voltage levels? I got down into the 50's ...
by gtarolli
Tue Jan 14, 2020 1:18 am
Forum: RADIAN Series
Topic: 120 v generator and autotransformer
Replies: 5
Views: 5463

Re: 120 v generator and autotransformer

In support mode the batteries can support limited ac in,so the gen. only needs to be more than the average load assuming you have some reasonable battery bank. Your max load is limited to gen + battery.
by gtarolli
Tue Jan 07, 2020 6:34 pm
Forum: Off Grid Applications
Topic: FNDC and SimpliPhi batteries
Replies: 44
Views: 11176

Re: FNDC and SimpliPhi batteries

More observations from today SOC was at 90% when ABSORB started at 55.4V, two FM chargers were still in Bulk, 5500w PV, 600 watts load after 15 mins all 3 chargers were in absorb and production throttled back to 3400w, so getting close to 100% SOC after 30 mins went to float, I wasn't watching so I ...
by gtarolli
Tue Jan 07, 2020 3:55 pm
Forum: Off Grid Applications
Topic: FNDC and SimpliPhi batteries
Replies: 44
Views: 11176

Re: FNDC and SimpliPhi batteries

Here's some observations on my system with six Simpliphi 3.4 batteries. At 78% SOC with 2kw PV generation I read 54v, with 6kw of PV I read 55v (within a few minutes of the other reading). So that's 4kw away from 100% SOC at 55v, which I think explains some things. Basically the 55v is artificially ...
by gtarolli
Sun Jan 05, 2020 11:39 am
Forum: Off Grid Applications
Topic: FNDC and SimpliPhi batteries
Replies: 44
Views: 11176

Re: FNDC and SimpliPhi batteries

Also - I think the fast rise is probably after 55.4 or so ...and make sure your voltages are reasonably well calibrated, i.e. all devices are within .1v or .2v
by gtarolli
Sun Jan 05, 2020 11:38 am
Forum: Off Grid Applications
Topic: FNDC and SimpliPhi batteries
Replies: 44
Views: 11176

Re: FNDC and SimpliPhi batteries

Since you are at such an extreme elevation - I wonder if the battery chemistry changes? Did you research that? I will go back to some of my old data in Optics and see if I can estimate how many kwh I put in after 55v. 3kw seems a bit high, but could be ... I will also see today if I read 100%.
by gtarolli
Sat Jan 04, 2020 12:38 pm
Forum: Off Grid Applications
Topic: FNDC and SimpliPhi batteries
Replies: 44
Views: 11176

Re: FNDC and SimpliPhi batteries

I usually don't watch voltage too much, until it gets very low, like around 51v, or I've added a lot of amps via genny and are manually tracking them (tomorrow I should get the genny hooked into shunt c so it is properly accounted for). Something seems strange that energy in >> energy out. If you pu...
by gtarolli
Sat Jan 04, 2020 11:35 am
Forum: Off Grid Applications
Topic: FNDC and SimpliPhi batteries
Replies: 44
Views: 11176

Re: FNDC and SimpliPhi batteries

One more note on getting to 100%. I disagree with Mike's suggestion of reducing the time, I would recommend the opposite - increase it. During absorb you will see your PV production decrease as it takes fewer amps to hold the voltage as the batteries approach 100% SOC. This assumes it is sunny. Let'...
by gtarolli
Sat Jan 04, 2020 11:21 am
Forum: Off Grid Applications
Topic: FNDC and SimpliPhi batteries
Replies: 44
Views: 11176

Re: FNDC and SimpliPhi batteries

Your system is almost identical to mine except I have the older 3.4 batteries and a Honda E3000 gen. Everything works great for me, something is a bit fishy with your system. I hope the issue is getting to 100% SOC once and for all, but not all the observations lend to that. Let me try to answer you...
by gtarolli
Sat Dec 28, 2019 1:52 pm
Forum: OutBack
Topic: Kauai Island moving toward 100% renewable energy
Replies: 5
Views: 2517

Re: Kauai Island moving toward 100% renewable energy

On the north shore we got it easy last week, elsewhere it was worse. But we had our share of disaster 2 years ago. The worst thing was running the gen. 6-8 hrs per day. After some analysis I decided more panels (my roof is maxed out now), was the next best thing. I haven't been at 100% in 17 days! I...
by gtarolli
Sat Dec 28, 2019 7:10 am
Forum: OutBack
Topic: Kauai Island moving toward 100% renewable energy
Replies: 5
Views: 2517

Re: Kauai Island moving toward 100% renewable energy

I'm doing my part , got 6 more solar panels installed yesterday to minimize generator time. As for the article, Kauai has probably the highest cost for electricity. Also don't big generators run all the time, as they don't like to stop and start? So I doubt we used zero gas/oil. But still pretty coo...
by gtarolli
Sat Dec 28, 2019 6:56 am
Forum: RADIAN Series
Topic: Charge batteries from generator/mains
Replies: 13
Views: 3428

Re: Charge batteries from generator/mains

In SUPPORT mode the batteries can augment AC in whether it be grid or generator. So you can have an 8000 watt load with a 2000 watt gen and Radian and a decent battery bank.
by gtarolli
Mon Dec 23, 2019 12:30 pm
Forum: FLEXnet DC
Topic: FNDC "Float Mode"
Replies: 13
Views: 4056

Re: FNDC "Float Mode"

agreed! .
by gtarolli
Mon Dec 23, 2019 11:30 am
Forum: FLEXnet DC
Topic: FNDC "Float Mode"
Replies: 13
Views: 4056

Re: FNDC "Float Mode"

OK, so as I understand it, it doesn't effect PV charging, just relays and other things that depend on SOC values. I guess that makes sense, else you might never shut the generator off.
by gtarolli
Mon Dec 23, 2019 10:42 am
Forum: FLEXnet DC
Topic: FNDC "Float Mode"
Replies: 13
Views: 4056

Re: FNDC "Float Mode"

This "float mode" confuses me too ... and I believe I have seen it trigger a few times - SOC jumps a few percent (e.g. 5%) to 100% but my chargers are still in Bulk mode. I wish there was some way to disable this, but it doesn't really seem to change the charging, just resets some numbers. Maybe som...
by gtarolli
Mon Dec 23, 2019 10:35 am
Forum: RADIAN Series
Topic: NEW* How To Set Up SimpliPhi™ Batteries Using OutBack Chargers
Replies: 11
Views: 4772

Re: NEW* How To Set Up SimpliPhi™ Batteries Using OutBack Chargers

I posted this on another thread ... posting it here as well. I emailed Simpliphi tech support regarding the new recommendations for Outback integration for the 3.8 model battery. These settings are quite a bit different from the older 3.4/3.5 batteries. I was wondering if these are newer/better and ...
by gtarolli
Thu Dec 05, 2019 5:42 pm
Forum: Off Grid Applications
Topic: FNDC and SimpliPhi batteries
Replies: 44
Views: 11176

Re: FNDC and SimpliPhi batteries

After reading some on Peukert's law, I am probably more confused than before. I think it says the total Amps you can remove from a battery are basically independent of the discharge rate, its just that voltage varies with the load, so you have to stop discharging earlier with large loads. What you d...
by gtarolli
Thu Dec 05, 2019 2:51 pm
Forum: Off Grid Applications
Topic: FNDC and SimpliPhi batteries
Replies: 44
Views: 11176

Re: FNDC and SimpliPhi batteries

OK, I had to Google that .... does anyone know how the Ah ratings for Simpliphi batteries varies with discharge rate? Is it small enough to ignore?
by gtarolli
Thu Dec 05, 2019 12:22 pm
Forum: Off Grid Applications
Topic: FNDC and SimpliPhi batteries
Replies: 44
Views: 11176

Re: FNDC and SimpliPhi batteries

I am not 100% at ease with his reply, e.g. 50.2v is 20% SOC with a C/2 load. Who typically has a C/2 load? That would be 20kw for your system! With a minimal load 50.2 could represent < 10% SOC, then a big load kicks in and your voltage drops by like a rock and yuck! 20% SOC is probably well over 51...