Search found 295 matches

by fcwlp
Thu Apr 16, 2020 5:11 pm
Forum: Off Grid Applications
Topic: Output of Panels
Replies: 37
Views: 3047

Re: Output of Panels

raysun wrote:
Thu Apr 16, 2020 4:33 pm
Only measure current one panel at a time.
In this case the problem is they are on a 10/12 pitch (40 degree) roof. It will be a challenge to disconnect and measure. Jim, if you do go up there, invest in a safety harness.
by fcwlp
Wed Apr 15, 2020 4:37 pm
Forum: Off Grid Applications
Topic: Output of Panels
Replies: 37
Views: 3047

Re: Output of Panels

The good news is that all of your strings are working. The bad news. Solar panels are semiconductor devices with many contacts. In 2008 when you bought your panels, I was doing some R&D work on a new contact technology for the cells. My experience was the Chinese manufacturers (of which Suntech is o...
by fcwlp
Wed Apr 15, 2020 2:16 pm
Forum: SkyBox Inverter
Topic: Power factor mismatch? Grid very low, SB=1
Replies: 54
Views: 3728

Re: Power factor mismatch? Grid very low, SB=1

Anyway, I disconnected the earth ground for the 30, 2012 Enphase microinverter array that shares the same metal roof with the arrays feeding Skybox - but forgot to look and see if this changed anything. Instead, being that it was starting to snow and in a hurry, I went ahead and connected the groun...
by fcwlp
Mon Apr 13, 2020 8:16 am
Forum: OutBack
Topic: Support for 2005 Outback system on Oahu?
Replies: 3
Views: 733

Re: Support for 2005 Outback system on Oahu?

As your issue appears to be with the solar panels, you do not need an Outback specific installer. It is possible that one or more of your strings of panels is not operating. This is relatively easy to determine if the strings are combined in a combiner box. It could be as simple as a tripped breaker...
by fcwlp
Mon Apr 13, 2020 8:03 am
Forum: Off Grid Applications
Topic: Hướng dẫn vệ bình giữ nhiệt sạch nhất và dễ dàng chỉ với những nguyên liệu đơn giản
Replies: 3
Views: 663

Re: Charging conflicts

i am seeing a nett loss of charge ( batteries reading about 1200 and falling to about 1180, despite using the diesel daily ( It is not clear what your values of 1200 and 1180 are. How are you measuring this? It appears you have FLA batteries, are you measuring the S.G.? NB when the diesel starts th...
by fcwlp
Sun Apr 12, 2020 8:28 pm
Forum: Mate
Topic: NIB MATE not powering up
Replies: 15
Views: 1063

Re: NIB MATE not powering up

Thanks for that, It's exactly what I was looking for. Your welcome. I recently fixed our oven's control board, that was no longer available. Upon inspection there were some cold solder joints that had worked for many years, until they finally failed. A touch with the soldering iron got it working.
by fcwlp
Sun Apr 12, 2020 7:51 am
Forum: Flex Power One
Topic: FXR3048 going off instead of transferring to grid
Replies: 8
Views: 877

Re: FXR3048 going off instead of transferring to grid

the Mate 3 s is set to Minigrid and transfer to grid is set to 46.8 Vdc. I believe the time for that V is very short. The LBCO is set to 45.7. that time is much longer the inverter is not transfering to Grid. I would verify the times. Default values have the Mini Grid V time at 10 minutes and LBCO ...
by fcwlp
Sat Apr 11, 2020 11:40 am
Forum: Off Grid Applications
Topic: heavy load causing voltage drop
Replies: 24
Views: 1876

Re: heavy load causing voltage drop

Instead something like a gohz.com unit and it works okay. Pss, thanks for the link for gohz. Interesting products for 1 to 3 phase as well as single phase VFD. I may be able to use the single phase VFD on some wells that have 2-3 HP motors for much less ($250-400) than pulling the pump (400-1000' d...
by fcwlp
Sat Apr 11, 2020 11:29 am
Forum: Off Grid Applications
Topic: DCC and shunt?
Replies: 10
Views: 1107

Re: DCC and shunt?

Impressive fabrication job on your solar trailer.
by fcwlp
Fri Apr 10, 2020 9:10 pm
Forum: OpticsRE
Topic: Optics hour ranges
Replies: 9
Views: 885

Re: Optics hour ranges

I'm not sure WHEN the points get measured, or WHY they're shown on the voltage axis at the heights they are.... (Maybe the average voltage?) Interesting voltage data. I always assumed it was just the average of the high and low. It looks like it is more sophisticated than a simple average, probably...
by fcwlp
Fri Apr 10, 2020 8:49 pm
Forum: Mate
Topic: NIB MATE not powering up
Replies: 15
Views: 1063

Re: NIB MATE not powering up

Does anyone have specific information on how to quantitatively test the output voltage or signal from the inverter to the MATE? Again. Currently working inverter. New In Box MATE 1 When I plug in the Mate nothing happens. Changed cable, Nothing. Both units pass visual inspection. No damage burning ...
by fcwlp
Fri Apr 10, 2020 7:37 pm
Forum: Off Grid Applications
Topic: Residential PV systems with batteries - UL-9450
Replies: 8
Views: 876

Re: Residential PV systems with batteries - UL-9450

Fortunately our AHJ is still on the 2011 NEC (an adjacent county is on 1996) and does not even require a permit or inspections for off-grid systems at least in our town. Story is that in the 1980s the county tried to enforce a full building code but decided that was not necessary after the town resi...
by fcwlp
Fri Apr 10, 2020 5:59 pm
Forum: Flex Power One
Topic: Battery Monitor issue
Replies: 13
Views: 974

Re: Battery Monitor issue

raysun wrote:
Fri Apr 10, 2020 5:26 pm
Can anyone interpret this chart? (If you can, just say "yes").
No. I think, more than one thing got lost in translation.
by fcwlp
Fri Apr 10, 2020 10:16 am
Forum: OpticsRE
Topic: Optics hour ranges
Replies: 9
Views: 885

Re: Optics hour ranges

It is what is happening in the hour starting at 9. Bar order is same as the legend above.
by fcwlp
Fri Apr 10, 2020 9:30 am
Forum: OutBack
Topic: Mate 2 won't reprogram .0 hour Float time -Float drains batteries
Replies: 13
Views: 1027

Re: Mate 2 won't reprogram .0 hour Float time -Float drains batteries at Float voltage but No Amps

Raysun, there was a FX2012T but I think he is talking about a 2012 installation of a FX?
by fcwlp
Fri Apr 10, 2020 9:24 am
Forum: Off Grid Applications
Topic: Input-Output Bypass Assembly
Replies: 7
Views: 767

Re: Input-Output Bypass Assembly

Bypass is just a manual way to "bypass" the AC AROUND the FlexWare to maintain the loads as if the FW were electrically not there...as for servicing the FW AC side. It is more accurate to say that it bypasses the inverter AC output. There is still AC voltage inside the FlexWare box, so watch where ...
by fcwlp
Thu Apr 09, 2020 12:58 pm
Forum: Grid Tie Applications
Topic: While in Grid-Tied mode my FM-80 go silent under full sun
Replies: 12
Views: 1164

Re: While in Grid-Tied mode my FM-80 go silent under full sun

Finca_Barriles wrote:
Thu Apr 09, 2020 8:03 am
I have my ac input limit at 15 amps AC because I want to limit the DC charging to around 35 amps, as per the battery manufacturer.
Hi Rod, you are already limiting the Charger output on the same screen to 8AAC, there is no need to limit the AC input amps for charging purposes.
by fcwlp
Thu Apr 09, 2020 7:32 am
Forum: Off Grid Applications
Topic: DCC and shunt?
Replies: 10
Views: 1107

Re: DCC and shunt?

The shunt could also be placed at the other end of the cable by the battery.
by fcwlp
Wed Apr 08, 2020 4:16 pm
Forum: Grid Tie Applications
Topic: While in Grid-Tied mode my FM-80 go silent under full sun
Replies: 12
Views: 1164

Re: While in Grid-Tied mode my FM-80 go silent under full sun

Recommend changing Mate3 -> Global Charge -> Auto Grid Tie Control from Enabled to Disabled. Take a look at this post viewtopic.php?f=15&t=14927

Why do you have your Grid AC Input Limit at 15AAC?

You may also want to experiment with your Sell Voltage.
by fcwlp
Wed Apr 08, 2020 12:14 pm
Forum: Off Grid Applications
Topic: DCC and shunt?
Replies: 10
Views: 1107

Re: DCC and shunt?

That did seem obvious. The FW-SHUNT250 says it is for mounting on the VFX inverter but I see no picture or install notes. My guess is with the part in hand it will be more obvious what to do. Post a picture of your trailer. Sounds like an interesting application.
by fcwlp
Wed Apr 08, 2020 11:55 am
Forum: SkyBox Inverter
Topic: Power factor mismatch? Grid very low, SB=1
Replies: 54
Views: 3728

Re: Power factor mismatch? Grid very low, SB=1

Is the Enphase mounting plate at AC ground potential? If so, a possible work around would be to insulate the mounting plate from the module/rail and provide a separate ground path for the module/rails. I would discuss with Enphase before doing. A quick and temporary test would be to disconnect the ...
by fcwlp
Wed Apr 08, 2020 8:00 am
Forum: SkyBox Inverter
Topic: Power factor mismatch? Grid very low, SB=1
Replies: 54
Views: 3728

Re: Power factor mismatch? Grid very low, SB=1

It just occurred to me, the new AC coupled array attached to the Skybox is mounted to the same metal roof as the direct grid tied array installed in 2012. That probably explains why there's continuity between the barn and Skybox grounding systems. D'oh! :eek: That does not show up in the schematics...
by fcwlp
Wed Apr 08, 2020 7:45 am
Forum: Off Grid Applications
Topic: DCC and shunt?
Replies: 10
Views: 1107

Re: DCC and shunt?

The shunt would need to be on the negative terminal of the inverter not the ground lug. Since you have a FLEXware 250 enclosure, it will be easier to put the shunt there.
by fcwlp
Wed Apr 08, 2020 7:38 am
Forum: Grid Tie Applications
Topic: While in Grid-Tied mode my FM-80 go silent under full sun
Replies: 12
Views: 1164

Re: While in Grid-Tied mode my FM-80 go silent under full sun

Hi Rod, your battery voltage appears to be high for LFP batteries, given your screenshots were from the afternoon and you were well past Absorb phase. Your battery V also does not appear to change much over the full day. Please provide the following information: - Battery manufacturer - Absorb V and...
by fcwlp
Mon Apr 06, 2020 8:44 pm
Forum: SkyBox Inverter
Topic: Power factor mismatch? Grid very low, SB=1
Replies: 54
Views: 3728

Re: Power factor mismatch? Grid very low, SB=1

Mike Curran wrote:
Mon Apr 06, 2020 7:03 pm
Voltage and resistance readings between barn grounding system and Skybox system confirm your suspicion - they were still quite low: 0.00 VAC, -0.02 ohms (yes, that's a minus sign).
Interesting, I have never seen a negative resistance. Let us know what you find.