Search found 241 matches

by Megunticook
Mon Jan 07, 2019 4:59 am
Forum: RADIAN Series
Topic: understanding role of the battery charger settings
Replies: 8
Views: 3968

Re: understanding role of the battery charger settings

I've been waiting for a sunny day to take some screen shots to illustrate my point. Ah yes, I remember those long gray stretches in a Northeast Ohio winter! November can be like that here in Maine, but often there's quite a bit of sun in the middle of winter. December was remarkable--my solar produ...
by Megunticook
Mon Jan 07, 2019 4:51 am
Forum: RADIAN Series
Topic: understanding role of the battery charger settings
Replies: 8
Views: 3968

Re: understanding role of the battery charger settings

Interesting. My FM80s both display "GT Mode" on their status screens when the system is selling. But in Optics it indicates they're in "float" typically while selling. I suppose the FM80s are essentially operating as if in bulk mode when they read "GT Mode," as they're aiming for the bulk/absorb vol...
by Megunticook
Fri Jan 04, 2019 8:43 am
Forum: RADIAN Series
Topic: battery charger equalize parameter is temp. compensated?!
Replies: 2
Views: 2241

Re: battery charger equalize parameter is temp. compensated?

OK, so it looks like it's by design then. I'll see what Rolls has to say about that with their batteries. I would have to raise my high-voltage cutoff for it to work. I'd be a little nervous about subjecting my batteries to 64+ volts, even with cold electrolyte, but I could be totally wrong about th...
by Megunticook
Thu Jan 03, 2019 1:31 pm
Forum: RADIAN Series
Topic: battery charger equalize parameter is temp. compensated?!
Replies: 2
Views: 2241

battery charger equalize parameter is temp. compensated?!

Using the Radian's internal battery charger to do an equalization cycle on my battery bank for the first time. It kept tripping the high voltage cutout (64v) until I realized that the setting for the charger's equalization parameter is temperature compensated. Is this a bug? I thought equalization p...
by Megunticook
Wed Jan 02, 2019 8:48 am
Forum: RADIAN Series
Topic: understanding role of the battery charger settings
Replies: 8
Views: 3968

Re: understanding role of the battery charger settings

They're in GT Mode. If you have "Grid-Tie Mode" enabled in the MATE3S settings, the charge controllers will use absorption voltage as their target (you actually referenced this setting in another thread (http://outbackpower.com/forum/viewtopic ... 40&t=12962).
by Megunticook
Wed Jan 02, 2019 8:12 am
Forum: FLEXmax Charge Controllers
Topic: equalize with 2 FlexMax 80s?
Replies: 10
Views: 5189

Re: equalize with 2 FlexMax 80s?

Thanks--I have 3 shunts. Right now on OpticsRE in the FNDC data it reads: Shunt A: -91.9 Shunt B: 39.8 Shunt C: 53.4 Since the bank is fully charged, does that mean most of those amps are effectively "bypassing" the bank and going right to the inverter? Meaning I can safely EQ as long as I keep an e...
by Megunticook
Wed Jan 02, 2019 7:57 am
Forum: RADIAN Series
Topic: understanding role of the battery charger settings
Replies: 8
Views: 3968

understanding role of the battery charger settings

I have the Radian's battery charged turned off, but I notice that the parameters are affecting the Radian's behavior in ways that seem inconsistent or that I don't fully grasp. For example, if I try to raise the sell voltage setting during colder weather, at a certain point I can only get the voltag...
by Megunticook
Wed Jan 02, 2019 7:42 am
Forum: FLEXmax Charge Controllers
Topic: equalize with 2 FlexMax 80s?
Replies: 10
Views: 5189

Re: equalize with 2 FlexMax 80s?

It's been 6 months since my last EQ, these batteries mostly sit fully charged (I've done 3 discharge/recharge cycles in those six months), and I'm ready to do another EQ. Battery manufacturer(Rolls) says to equalize every 60-180 days, or when the s.g. of cells varies by more than .025-.030. When tak...
by Megunticook
Fri Nov 30, 2018 11:54 am
Forum: FLEXmax Charge Controllers
Topic: FM80s will not go to GT Mode after charging batteries
Replies: 6
Views: 3171

Re: FM80s will not go to GT Mode after charging batteries

What is your inverter's "sell" voltage set at? Ideally this parameter is slightly below your CC's "float" setting. If it's too high, the inverter won't "sell" power. I assume you have an interconnection agreement with your utility company even if they don't compensate you for any kWh you push onto t...
by Megunticook
Sun Nov 25, 2018 12:33 pm
Forum: OutBack
Topic: surge protection
Replies: 17
Views: 7548

Re: surge protection

Interesting discussion. So would there be any advantage in my setup to running that second equipment grounding conductor from the array directly a second ground rod? Assuming the second rod is tied to the original one. Right now the path to ground from the array is through the combiner box, down to ...
by Megunticook
Tue Nov 20, 2018 3:16 am
Forum: OutBack
Topic: surge protection
Replies: 17
Views: 7548

Re: surge protection

Thanks for the details on your lightning protection. I'll check out those products.

Is your system just grounded to the main ground rod at the service panel?

And no device at the panel?
by Megunticook
Sun Nov 18, 2018 7:38 am
Forum: OutBack
Topic: surge protection
Replies: 17
Views: 7548

surge protection

I'd like to harden my electrical system's defenses against surges/spikes from lightning or the grid. What's everyone's opinion on whole-house surge protectors that wire into your main panel? I have my eye on the Seimens FirstSurge https://w3.usa.siemens.com/powerdistribution/us/en/product-portfolio/...
by Megunticook
Tue Oct 16, 2018 5:40 pm
Forum: RADIAN Series
Topic: RADIAN GS8048A GRID TIED TROUBLESHOOTING NEEDED
Replies: 12
Views: 6593

Re: RADIAN GS8048A GRID TIED TROUBLESHOOTING NEEDED

Is your MATE3s in Grid-Tied mode?
by Megunticook
Tue Sep 11, 2018 8:49 am
Forum: RADIAN Series
Topic: RADIAN GS8048A GRID TIED TROUBLESHOOTING NEEDED
Replies: 12
Views: 6593

Re: RADIAN GS8048A GRID TIED TROUBLESHOOTING NEEDED

That's right--if the inverter is producing more power than the subpanel is using and/or going into the batteries during a charge cycle, then excess power flows back to your main AC panel to power those loads. If the current flowing to the main panel exceeds the load requirements there, then excess g...
by Megunticook
Sun Sep 09, 2018 11:25 am
Forum: RADIAN Series
Topic: RADIAN GS8048A GRID TIED TROUBLESHOOTING NEEDED
Replies: 12
Views: 6593

Re: RADIAN GS8048A GRID TIED TROUBLESHOOTING NEEDED

I have a fairly similar-size Radian system that I installed myself last fall. I'm not a professional installer, but I did my homework carefully, planned thoroughly, and for extra measure hired an electrician to inspect everything afterward. To use the Radian system safely and correctly you're going ...
by Megunticook
Wed Aug 08, 2018 1:10 pm
Forum: OpticsRE
Topic: Optics data anomaly--explain?
Replies: 27
Views: 6255

Re: Optics data anomaly--explain?

Everything looks back to normal on Optics bar graph since 1pm yesterday afternoon (EST).
by Megunticook
Fri Aug 03, 2018 7:40 pm
Forum: RADIAN Series
Topic: How loud is the Radian?
Replies: 10
Views: 10053

Re: How loud is the Radian?

I mounted mine in a shed that sits about 40 feet from my back door. We got quotes from several installers, all of whom planned to mount it in our utility room, which is just off the kitchen. I had a strong intuition I would regret mounting it in the house because of the noise. Very glad I listened t...
by Megunticook
Wed Aug 01, 2018 6:01 am
Forum: OpticsRE
Topic: Optics data anomaly--explain?
Replies: 27
Views: 6255

Re: Optics data anomaly--explain?

FYI, Optics stopped showing any data in the bar graph at 4am this morning. The MATE3s is online, I can browse to it on my LAN and Optics is displaying current performance--just nothing is displayed in the bar graph.
by Megunticook
Tue Jul 31, 2018 3:49 pm
Forum: OpticsRE
Topic: Optics data anomaly--explain?
Replies: 27
Views: 6255

Re: Optics data anomaly--explain?

Profile is "Bald Mountain" (it's listed in my forum user profile).

I do have the latest firmware for the MATE3s (1.3.0). I was one of the beta testers in fact.

These odd spikes have only happened since the firmware update.
by Megunticook
Tue Jul 31, 2018 4:57 am
Forum: Grid Tie Applications
Topic: PVRSS issue
Replies: 6
Views: 3335

Re: PVRSS issue

Thanks for the clarifications there. I think the key thing is that any firefighters on scene can quickly identify any sources of power to the building and how to disconnect them. A preincident plan or visit by local fire officials is probably ideal, but clear signage is good. I hadn't thought about ...
by Megunticook
Sat Jul 28, 2018 7:19 am
Forum: Grid Tie Applications
Topic: PVRSS issue
Replies: 6
Views: 3335

Re: PVRSS issue

I think Brett's looking at rapid shutdown of his inverter's AC output. Is this document helpful? http://www.outbackpower.com/downloads/documents/appnotes/rapid_shutdown_app_note.pdf Hopefully your CEO is flexible and OK with good "common sense" solutions. Mine was not a stickler on the rapid shutdow...
by Megunticook
Fri Jul 27, 2018 5:07 am
Forum: OpticsRE
Topic: Optics data anomaly--explain?
Replies: 27
Views: 6255

Optics data anomaly--explain?

I noticed in Optics this morning that it recorded a huge spike in power consumed from grid from 12-1am the night before last (3kWh!) and also 9kWh taken from the battery. There's no way that could be right--everyone in the house was asleep at that time and the only thing running would've been the fr...
by Megunticook
Tue Jul 24, 2018 3:00 pm
Forum: OutBack
Topic: absorption time and FNDC SOC data
Replies: 6
Views: 2921

Re: absorption time and FNDC SOC data

8.6 amps (based on calculations I did following the guidance in the Rolls manual). I set this in the FNDC settings, since as you note that setting needs to be disabled in the two charge controllers. From my observations, including this most recent charge, by the time the charge controllers get the b...
by Megunticook
Mon Jul 23, 2018 4:41 pm
Forum: OutBack
Topic: absorption time and FNDC SOC data
Replies: 6
Views: 2921

Re: absorption time and FNDC SOC data

I only checked 4 cells, but they all ranged from 1.260 to 1.270. Electrolyte temp. is 26 C, which is as warm as I've seen it all year, so that may account for the slight dip in s.g. (This winter I was as more like 1.275-1.285). After the recharge was "done" at noon or so, I set my sell voltage at th...
by Megunticook
Mon Jul 23, 2018 1:44 pm
Forum: OutBack
Topic: absorption time and FNDC SOC data
Replies: 6
Views: 2921

Re: absorption time and FNDC SOC data

I'll take a reading tonight and post it here--be best to wait until I"m no longer selling power and the batteries have had a chance to settle down from today's recharge.