Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Advice on GTIL Inverter
#31
So anyways to see what’s actually going on I need to monitor house and solar power...wish the iotawatt sensed both legs voltage. Cuz like I was saying if a high wattage 120v appliance or many 120v things are unbalancing the legs of panel by 2000w (which would only be a microwave and hairdryer) at 123v but the iotawatt is only sensing 120v on the leg it’s referencing voltage from then wouldn’t the home monitor system read incorrectly, as in the 3%(difference in voltage of the legs during high unbalanced loads) of the 2000w
Reply
#32
(08-22-2019, 08:21 PM)Doin it Wrote: So anyways to see what’s actually going on I need to monitor house and solar power...wish the iotawatt sensed both legs voltage. Cuz like I was saying if a high wattage 120v appliance or many 120v things are unbalancing the legs of panel by 2000w (which would only be a microwave and hairdryer) at 123v but the iotawatt is only sensing 120v on the leg it’s referencing voltage from then wouldn’t the home monitor system read incorrectly, as in the 3%(difference in voltage of the legs during high unbalanced loads) of the 2000w

3% Man I think you are splitting hairs. I don't even think your "smart meter" is +-3% accurate.
The guy on the openenergymonitor.org I think came to the right conclusion.



Wolf
If 18 X 650 = 2200+mAh then we have power! 
May all your Cells have an IR of 75mΩ or less Smile
Last count as of 8/7/2019
Total Number of Cells Recorded and processed                 6149
Total Cells required for PowIRwall                                   2856
Total Cells ≥2200mAh, ≥80%, ≥35mΩ, ≤75mΩ, ≥4.12V   2760
For Info Google Drive
Not your average Wolf       
            Cool
Reply
#33
That fella said this in the comments. I guess I meant legs can vary as much as 3 volts during times with high-more amperage draw on one leg. And that higher amperage draw could be as much as idk 2000w depending on how much power whatever is using that creating the unbalance. So it would only be roughly 3% maybe 2% of that 2000w that the energy monitor is either reading that lower or higher than it should be. So yeah like u said 45w lol
But those are the times when I’d like my usage monitor to be really accurate due to having 240v inverters and trying to figure out what’s going on when loads are unbalanced
Reply
#34
Again I think we are splitting hairs here.

But if you want you can always buy 2 of the IotaWatt units and pipe them all to 1 data collector and then compare.
1 plugged into L1 and 1 plugged into L2.

Wolf
If 18 X 650 = 2200+mAh then we have power! 
May all your Cells have an IR of 75mΩ or less Smile
Last count as of 8/7/2019
Total Number of Cells Recorded and processed                 6149
Total Cells required for PowIRwall                                   2856
Total Cells ≥2200mAh, ≥80%, ≥35mΩ, ≤75mΩ, ≥4.12V   2760
For Info Google Drive
Not your average Wolf       
            Cool
Reply
#35
One costs enough. I seen the sense for instance buts it’s 350$. It does reference both voltages. the iotawatt is 200$, more like what I was wanting to pay...I’m trying to find a 200$ energy monitor that references both legs voltage due to what I said in the last sentence from last post...the electric company meter references at 240v I think, probably whatever the sum of the 2 legs voltages are..just thinking out loud..
Wouldn’t I actually need to be able to reference the voltage on the solar wire aswell in order to read it with better accuracy?
Reply
#36
Still hope for the iotawatt, I believe these pics say to essentially use the red wire aswell as the black wire (one to each leg of panel) to get a voltage reference from each phase! Did u do it this way wolf or did u just use the black wire? pics should be flip flopped to be read in order

Also says this tho so now I’m confused cuz I cant do all that looping of my mains...it says that typical split phase installations use the black wire and not the red but it also says that it can be done by referencing both legs voltage...but then it seems as if the red and black are used only for 240v split phase not then measuring 120v loads correctly?...then at the bottom for 120v and 240v which is split phase u gotta loop the wires and junk which I can’t do with my mains. I think I might be confusing the power reference wires of the mcu and the wires the cts go on....
Wolf does the iotawatt have 3 wires that are used to connect to a breaker or does it just plug into a 120v outlet?
Reply
#37
Then I found this,,, same fella we were talking about before...he installed a 240v euro plug in his USA based home and used a Euro Vt and then I guess just somehow in the settings made 120v loads read half of the 240v reference which would be more accurate than just using one 120v reference
Reply
#38
The 240 Voltage Transformer idea looks to be a solution to your problem of measuring both legs.
The Current Transformers I installed were SCT013-000. And yes for proper function one was installed in 1 direction and one was installed in the reverse. If you need to you can also switch them with software.
I do not have any 240 appliances in my house as all my heating, cooking and drying is propane. So the red and black wire scenario is no consequence to me. You can see in the picture below I have 10 more hookups to do. I have the CTs but not had the time to hook them up yet.



If you uncheck allow negative power value you can claim you never backfeed by the graph to the utilities Tongue




Wolf
If 18 X 650 = 2200+mAh then we have power! 
May all your Cells have an IR of 75mΩ or less Smile
Last count as of 8/7/2019
Total Number of Cells Recorded and processed                 6149
Total Cells required for PowIRwall                                   2856
Total Cells ≥2200mAh, ≥80%, ≥35mΩ, ≤75mΩ, ≥4.12V   2760
For Info Google Drive
Not your average Wolf       
            Cool
Reply
#39
I don’t want the iotawatt to measure 120v loads as 240v loads tho..how would this be accomplished. It was saying something like the 120v loads use half of the 240v voltage reference. How would I set the IoTaWatt to read half the 240volt reference?
Reply
#40
(08-23-2019, 01:43 PM)Doin it Wrote: I don’t want the iotawatt to measure 120v loads as 240v loads tho..how would this be accomplished. It was saying something like the 120v loads use half of the 240v voltage reference. Would it automatically use only half of the 240v reference when there’s 120v loads but still use the full 240v reference when there’s 240v loads?
Once you set up your inputs

Then you set up your outputs for the graphing

Your outputs to the graph are adjustable with proven formulas.

In this case I wanted the output of both GTIL combined so you add them together. 

All output settings can be adjusted as necessary.



Wolf
If 18 X 650 = 2200+mAh then we have power! 
May all your Cells have an IR of 75mΩ or less Smile
Last count as of 8/7/2019
Total Number of Cells Recorded and processed                 6149
Total Cells required for PowIRwall                                   2856
Total Cells ≥2200mAh, ≥80%, ≥35mΩ, ≤75mΩ, ≥4.12V   2760
For Info Google Drive
Not your average Wolf       
            Cool
Reply


Who read this thread?
31 User(s) read this thread:
daromer (08-19-2019, 05:58 AM), emuland-metroman (08-19-2019, 07:30 PM), sl1me (08-28-2019, 04:26 AM), Wolf (08-24-2019, 01:18 AM), Solardad (09-07-2019, 07:46 PM), ajw22 (09-04-2019, 02:30 AM), RikH (08-19-2019, 07:44 PM), OffGridInTheCity (08-20-2019, 04:55 AM), Doin it (08-30-2019, 09:26 PM), gpearce52 (08-19-2019, 09:50 PM), Marrcin (08-21-2019, 07:21 PM), 3xtr3m3 (08-20-2019, 06:46 AM), suntan901 (08-27-2019, 03:29 PM), SanDiegoMaxim (09-03-2019, 01:19 AM), chuckp (08-25-2019, 04:16 PM), Riplash (08-24-2019, 10:44 PM), avm131 (08-21-2019, 06:46 PM), Sean (08-24-2019, 08:37 AM), Majorphill (08-23-2019, 05:00 AM), Korishan (08-24-2019, 03:00 AM), jdeadman (08-23-2019, 07:03 PM), wim (08-22-2019, 06:02 AM), watts-on (08-24-2019, 10:32 AM), Geek (08-19-2019, 04:41 AM), Ivo Staelens (08-23-2019, 05:20 PM), ad8mustanggt (08-28-2019, 08:32 PM), cnous3 (08-26-2019, 02:32 PM), BaronVonChickenPants (08-20-2019, 03:02 AM), EnergyDoc (09-05-2019, 06:01 AM), completelycharged (08-24-2019, 03:34 PM), nettermann90 (08-22-2019, 06:57 AM)

Forum Jump:


Users browsing this thread: 3 Guest(s)