Hi James -
Is there a long run between the inverters and the point of interconnection?
As others have pointed out, it appears that the symptoms you describe are
voltage drop related. If the wire size is too small it will result in
voltage at the inverters going up when current starts to flow. The
Wrenches
Looks like the i verter is doing what it should 269 is out of range, what
is the at meter voltage, libe loss or very high output voltage, 41 volts
increase looks like resistance issues. More info would help, distance, wire
size etc.
Jerry
Jerry
On Thu, May 20, 2021, 9:52 AM James Reismil
Honestly we see pretty steady failures of the old VFX series too. 5 to
10 years, then rebuilds. The rebuild boards do not seem to be as robust
either, we just had one fail after a little over a year. The failure
rate definitely seems to correspond to grid tie systems with either
large arrays
You’ll need to either measure or calculate impedance from the inverters up to
and ideally including the utility transformer. The most likely culprit are one
or both are undersized.
From: RE-wrenches on behalf of
James Reismiller
Sent: Thursday, May 20, 2021 10
We install pv and SHW. It is now about 75% 25% respectively. Actually
just commissioned a two collector DB system. After 20 years, it was my
first DB. It is working great as of this late morning. I'd like to look
into online monitoring of these. We have too many customers that are
not here en
I'm going to be upgrading on old dual inverter OutBack FX 2524 system to
dual VFX3524 inverters and would prefer to not use the new R series as I
have heard about problems with them.
I have located only one reconditioned VFX3524 so far but I see that there
are VFX3524M Marine version's available.
Hey James,
Line 1 and Line 2 switched in the inverter combiner panel from any of the
inverters? ( line 1 connected to line 2 of inverter 2 or 3 or vice versa)?
Good luck!
Sunny Regards,
Kirpal Khalsa
Oregon LRT#25
Oregon Solarworks LLC
www.oregonsolarworks.com
541-299-0402
On Thu, May 20, 2021 a
Hi Folks,
I'm wondering if anybody has ideas on what could be causing grid
over/undervoltage errors on an install we did about a year ago that now has
these issues. The site is a 24 kW DC ground mount array with (3) SMA
SB7.0-1SP-US-40 inverters. I've checked and done the following:
1. Measu
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