Search found 328 matches

by SandyP
Tue Jan 14, 2020 4:50 pm
Forum: Off Grid Applications
Topic: Off Grid Battery Issues
Replies: 59
Views: 832

Re: Off Grid Battery Issues

provo wrote:
Tue Jan 14, 2020 8:02 am
../..Raysun -- I don't have an FNDC, and my Inverter Screen on the Mate3s shows me kW and kWh into and out of the battery:../..
Maybe it is the Mate3s calculated kWh based on it seeing the kW into/out of the inverter over time from either AC or battery?
by SandyP
Sat Jan 11, 2020 5:52 pm
Forum: Off Grid Applications
Topic: Off-Grid System Health Check
Replies: 7
Views: 274

Re: Off-Grid System Health Check

.../... If I disconnect the batteries completely from any load/charging source the FNDC automatically jumps to 100 percent, which means every time I disconnect it, I have to follow the new battery setup procedure as recommended by the manufacturer. This works, but it does not answer my question: "I...
by SandyP
Fri Jan 10, 2020 10:06 pm
Forum: OutBack
Topic: Unusual low battery levels after minimal load
Replies: 53
Views: 653

Re: Unusual low battery levels after minimal load

Nice! Presumably you're monitoring that remotely, via the net. I see you're in Victoria, OZ. Hope the wildfires aren't anywhere near your cabin :shock: Luckily we are in range of a fixed wireless internet tower so we can monitor the battery bank. Thankfully our cabin is on the coast south of Melbou...
by SandyP
Fri Jan 10, 2020 6:21 pm
Forum: OutBack
Topic: Unusual low battery levels after minimal load
Replies: 53
Views: 653

Re: Unusual low battery levels after minimal load

Do seriously consider getting a good battery monitor. .../.. Might have to invest in thet Trimetric, although the Outback/MATE system has always seemd to work OK.../... Unless you put a shunt into your system (on the -ve cable from your battery) you will never have "enough" information to "know" ho...
by SandyP
Thu Jan 09, 2020 3:44 pm
Forum: OutBack
Topic: Unusual low battery levels after minimal load
Replies: 53
Views: 653

Re: Unusual low battery levels after minimal load

.../... What would be useful is to be able to run a cable to a laptop and access the system from upstairs;../.. Maybe also consider the Victron BMV 712 battery monitor (similar to the Trimetric) and has a long cable as well as Bluetooth functionality. https://www.wholesalesolar.com/2940225/victron-...
by SandyP
Sat Jan 04, 2020 4:40 pm
Forum: Off Grid Applications
Topic: VFX3648 Generator charging issue
Replies: 2
Views: 198

Re: VFX3648 Generator charging issue

Mate3 shows input voltage of 116V ? G power input of .1 to .3W ??? yes,less than 300W running. MATE3 shows discharge and NO input. Is the 3648 CAPABLE of greater internal charge capacity ? 240V or ONLY 115V ? Does the Mate show that the inverter is charging the batteries when the generator is on or...
by SandyP
Wed Dec 25, 2019 1:17 am
Forum: RADIAN Series
Topic: Charge batteries from generator/mains
Replies: 13
Views: 712

Re: Charge batteries from generator/mains

../...explain how the batteries can charge from mains or generator I'd appreciate it. The manual states that AC input can be from the Grid or Generator however, Grid is set to be the priority input. So, if you have Grid AC and start the Genset, AC input will remain with the Grid. You can go into th...
by SandyP
Fri Dec 13, 2019 7:56 pm
Forum: Backup Applications
Topic: Ac in
Replies: 2
Views: 975

Re: Ac in

I am trying to trickle feed battery with generator but ac in blinking not charging new to system as just moved to property in am in spain how do i sethe system to accept generator to charge battery please You need to check that the generator AC feed is within the required voltage and frequency rang...
by SandyP
Sat Dec 07, 2019 5:24 am
Forum: Off Grid Applications
Topic: Removing Battery Connection
Replies: 11
Views: 806

Re: Removing Battery Connection

My question is, what happens to the Flexmax 60 and VFX2812 when they are outputting power to the connected batteries and suddenly the batteries are disconnected? Are they able to handle this? Probably should not have an issue, didn't your installer post on the wall a system shut down & start up seq...
by SandyP
Thu Dec 05, 2019 1:26 am
Forum: Off Grid Applications
Topic: FNDC and SimpliPhi batteries
Replies: 44
Views: 3763

Re: FNDC and SimpliPhi batteries

...Lithium couldn't care less about that. In fact, religiously charging them to 100% SOC, especially if holding them at 100% SOC in a float application, will shorten their service life....... .... I'd expect the "sweet spot" reference is to finding a state of charge that meets ones consumption need...
by SandyP
Wed Dec 04, 2019 5:30 pm
Forum: OutBack
Topic: System shuts off at night when SOC in in the 70% range
Replies: 3
Views: 529

Re: System shuts off at night when SOC in in the 70% range

....Regardless, It is possible the FNDC is reading a 100% SOC when the battery is not actually at 100%. .... Yes, As Kurt mentioned the FNDC "assumes" the battery bank is at 100% SoC when you connect it up. If your batteries were not fully charged when either the FNDC or your batteries were install...
by SandyP
Tue Nov 19, 2019 10:20 pm
Forum: Off Grid Applications
Topic: Auto gen start instructions?
Replies: 14
Views: 1666

Re: Auto gen start instructions?

My question about the generator was independent of your system , i.e. what would be the "ideal" desired loading on the generator to balance efficiency and logevity and not over-work it. From memory, gensets do best when at 75% of their max rating so that does equate to around 5,250W for your EU7000...
by SandyP
Sat Nov 16, 2019 7:03 pm
Forum: Off Grid Applications
Topic: Generator shuts down when battery bank attains absorption voltage
Replies: 4
Views: 874

Re: Generator shuts down when battery bank attains absorption voltage

.... The AGS is set to Auto and the low voltage start setting is 24.0 V. The absorption voltage is set at 29.4V..... Just to confirm you have set the Absorb voltage for the VFX charger AND set the Absorb time to 4 hours? MAIN/ADV/FX/Chgr Absorb voltage __________Volts Absorb time __________Hours
by SandyP
Wed Nov 13, 2019 7:15 pm
Forum: Grid Tie Applications
Topic: Absorb charge worth the cost?
Replies: 2
Views: 981

Re: Absorb charge worth the cost?

The better options are to either : 1) When charging by genset and you get to the absorb phase start your house loads that draw the most power, washing machine etc. 2) If you have limited RE charging (solar/wind) then run the geset to do the Bulk phase of battery charging and then switch it off and h...
by SandyP
Fri Oct 18, 2019 12:32 am
Forum: Off Grid Applications
Topic: Am I treating my batteries properly?
Replies: 3
Views: 1276

Re: Am I treating my batteries properly?

As stated, with flooded batteries your best to use a hydrometer and periodically check the SG of each battery's electrolyte to confirm that they are all getting a suitable charge (ie no poor connections etc.) Based on your summary of voltage readings you seem to only be using about 4-5% of the batte...
by SandyP
Sat Oct 12, 2019 5:08 am
Forum: Off Grid Applications
Topic: Seasonal Decommissioning
Replies: 10
Views: 2297

Re: Seasonal Decommissioning

Personally, I would never leave batteries without a "trickle" charge, even if they are AGM. I would leave the solar hooked up to keep the batteries charged through the whole winter. No reason to have them unhooked in my opinion. also a fellow Mainer I tend to agree, just isolate / turn off the inve...
by SandyP
Mon Jul 01, 2019 7:11 am
Forum: Grid Tie Applications
Topic: Minimum required Inverter Voltage
Replies: 2
Views: 1536

Re: Minimum required Inverter Voltage

Good day all Can someone inform me as to what is the minimum voltage that the GVFX 3048E Inverters can run on. The reason I am asking is that I am considering changing to the Sirius Super Cap modules as energy storage units and would like to know to what percentage I can discharge them to before th...
by SandyP
Sat Jun 29, 2019 8:20 pm
Forum: OutBack Energy Cell Batteries
Topic: generator set up vxfr3648a
Replies: 8
Views: 3127

Re: generator set up vxfr3648a

Sasxha189 wrote:Ifn you'd could front me the cash...
Maybe see if you can borrow one then?

Pity the Outback rep did not tell you that the only real way of telling the state of charge of a FLA battery is by its electrolyte SG - read some of the topics on this in the Outback forums.
by SandyP
Sat Jun 29, 2019 8:01 pm
Forum: OutBack Energy Cell Batteries
Topic: generator set up vxfr3648a
Replies: 8
Views: 3127

Re: generator set up vxfr3648a

Given there has already been a lot of money invested in this I suggest, at a minimum, you get a Mate2 ($220-250 online) so you can set up the system properly and see what the inverter/charger is doing. Once you stop battery charging the voltage will drop as the inverter will have a 25W load on the b...
by SandyP
Sun Jun 09, 2019 7:11 pm
Forum: Grid Tie Applications
Topic: Normal output in hot days?
Replies: 19
Views: 4831

Re: Normal output in hot days?

Shadow_Storm56 wrote:I'm just going by it's rating, 275w panels. I would assume this is the optimal conditions one
Edit : Yes it will be the optimal (ie STC), panel "sticker" ratings are STC.
by SandyP
Sun Jun 09, 2019 4:59 pm
Forum: Grid Tie Applications
Topic: Normal output in hot days?
Replies: 19
Views: 4831

Re: Normal output in hot days?

....Both arrays combined will do 4300W total and the max I will get on a moderate hot day is 3.6. The max on a peak summer heat would be 3-3.2. Is it normal for it to drop that badly in high heat.... Are you looking at your panel's STC rating or the NOCT rating - usually around a 25% difference? No...
by SandyP
Fri Jun 07, 2019 7:27 am
Forum: OutBack
Topic: FM60 AUX Output Question
Replies: 6
Views: 2504

Re: FM60 AUX Output Question

Some posts that cover what you want to do : http://www.outbackpower.com/forum/viewtopic.php?f=40&t=13005&p=58736&hilit=water+heater#p58736 http://www.outbackpower.com/forum/viewtopic.php?f=1&t=13048&p=58916&hilit=water+heater#p58916 https://hackaday.io/project/162995-solar-power-diverter-outback-power
by SandyP
Sun Jun 02, 2019 7:12 am
Forum: FLEXmax Charge Controllers
Topic: Not enough Voltage
Replies: 5
Views: 3450

Re: Not enough Voltage

So I've noticed that my system only charges the batteries to about 53-54 volts during the day, even when there's little draw. For example, the panels are pulling in between 2.5 and 3.0 KwH (nice sunshine), and I'm only drawing about 0.8 KwH, yet the batteries are only going up to about 53-54 volts ...
by SandyP
Fri May 31, 2019 7:56 pm
Forum: OutBack Energy Cell Batteries
Topic: is this normal for nc200
Replies: 1
Views: 3470

Re: is this normal for nc200

jrodriguez wrote:This cannot be normal, is it?
Given the little use and SoC at 100% then it looks reasonable.
You may have expected the battery voltage to go to 27.2V (battery spec Float voltage setting).
What Float voltage do you have set on your charge controller?
by SandyP
Wed May 29, 2019 11:27 pm
Forum: FLEXmax Charge Controllers
Topic: System settings ,Installer missing
Replies: 8
Views: 4155

Re: System settings ,Installer missing

Ok adding a pix.. for you Looks like you are getting >100V in from your array. I presume the photo of the FM display was taken late afternoon as it shows >8kWH produced for the day? It appears that your power usage during the day is probably limiting the amps going to the battery to recharge the ba...