AC in high limit setting

Website & Forum Discussions
Check here for our Welcome Message

Moderators: administrator, OutBack, OutBack Moderator Team

Post Reply
Offgridder
Forum Junior Member
Posts: 2
Joined: Mon Jan 14, 2019 12:41 pm
My RE system: 3048 inverters, mx60 charge controllers, mate, 48 volts of batteries 6 volts each, off grid

AC in high limit setting

Post by Offgridder » Mon Jan 14, 2019 12:58 pm

I have a 20kw Generac generator I use for charging. It is generating between 146 and 148 volts on each leg. Is it safe to raise the ac voltage in setting above the 140 V default of my Outback system?

Mike Curran
Forum Emperor
Posts: 1089
Joined: Sat Aug 28, 2004 6:28 pm
My RE system: Outback:
- 8 (2x4) Evergreen 180's into one MX60 (2007)
- 6 (2×3) ALEO S79-300's into one FM80 (2017)
- 2 grid-tied GVFX3524's classic stacked for 120/240VAC (2007)
- 12 Surrette/Rolls 2V x 1766Ah (2007)
- Hub10.3, Mate3s, FNDC, RTS, OpticsRE. Tigo Energy ES maximizers on each PV module.

Westinghouse Solar: (2012)
- 30 (2x15) 235W panels with Enphase M215 microinverters, grid-tied.

All self-designed and self-installed
Location: Chagrin Falls, Ohio

Re: AC in high limit setting

Post by Mike Curran » Mon Jan 14, 2019 2:45 pm

The FX series programming manual says the upper AC IN limit range is 130-150VAC, so you should be okay, assuming that's the manual that applies to your inverter:
Screenshot_20190114-163932.jpg
Manual:
fx_series_programing_manual.pdf
(644.06 KiB) Downloaded 94 times
http://www.tigoenergy.com/site.php?95b2dca2-ca6c
https://enlighten.enphaseenergy.com/public/systems/Hctc107221

User avatar
Jorge Guzman
Strategic Platforms
Posts: 247
Joined: Thu May 29, 2014 9:44 am
My RE system: VFXR3524A, FM80, MATE3. 3x 260W REC. 4x Trojan L16 FLA 370Ah.
Location: Arlington, WA

Re: AC in high limit setting

Post by Jorge Guzman » Mon Jan 14, 2019 3:23 pm

Also keep in mind the OutBack doesn't condition the voltage it will just pass through the generator power straight to your house so your loads will receive this higher voltage.
Jorge Guzman
Sr. Strategic Platforms Analyst


Watch easy to follow video tutorials:
https://www.youtube.com/c/wattschool

JeffinthePeace
Forum Guru
Posts: 102
Joined: Mon Oct 01, 2018 8:20 pm
My RE system: VFX3524 Inverter/Charger.
2 x FM80 Charge Controllers.
12 Trina PV panels: 365W, 48.0Voc, 9.3A Imp.
Total 4380W PV.
Midnight Sun Combiner Boxes.
Mate (Original) and Hub4.
TriMetric 2020 Battery Monitor.
1065 Ah Yuasa 85T-21 FLA 24V battery bank (10 yrs old).
10kW 120/240VAC Kubota/Stamford diesel generator.
PSX-240 Auto Transformer for generator charging.
No Utility Grid available.
Location: Peace Country, British Columbia

Re: AC in high limit setting

Post by JeffinthePeace » Mon Jan 14, 2019 3:37 pm

I wonder if you can adjust the voltage regulator (AVR?) on the genset in order to bring the voltages down to ~120V, where they are intended to be?
I have noticed that some appliances do not operate properly if they are not close to 120V. I can see 110V-130V range but 148V is getting up there??

Offgridder
Forum Junior Member
Posts: 2
Joined: Mon Jan 14, 2019 12:41 pm
My RE system: 3048 inverters, mx60 charge controllers, mate, 48 volts of batteries 6 volts each, off grid

Re: AC in high limit setting

Post by Offgridder » Tue Jan 15, 2019 2:05 pm

Thank you all! Great advice. I will be working with the generator to get the voltage corrected before attempting to connect it to the system. Thanks again...

poojagite
Forum Junior Member
Posts: 1
Joined: Mon Feb 04, 2019 4:19 am
Contact:

Re: AC in high limit setting

Post by poojagite » Thu Feb 07, 2019 11:26 pm

Yes, 16 C and 31 C are the limits in the split AC in my room. I normally use it between 21 and 27 depending on the outside weather. I also switch it ON and OFF periodically and in addition use the ceiling fan to keep the air comfortable and reasonably dry.
Its hardware networking problem
I am hardware and network engineer by profession

Post Reply