[RE-wrenches] Schneider 6048 power output fluctuating widely

[Jarmo.Venalainen at schneider-electric.com]

Hi:

>From your description of the problem and the video, I suspect the problem 
is due to:

1. The inverter is exporting very near full power.
2. The grid voltage rises which at the same AC current results in larger 
export power flow above the inverters limit.
3. The inverter stops exporting due to reaching its power limit
4. The inverter again starts exporting.....
5.  Reaches power limit and stops.
6.etc.......

I.E. since the inverter is working close to its power limit on a grid with 
 fluctuating voltage, it goes in and out of max power limit. 

One way to test if this is the cause is to reduce the Sell Amps so that 
you are not operating at the power limit of the inverter.

JARMO
_____________________________________________________________________________________ 


Jarmo Venalainen  |   Schneider Electric   |  Solar Business  |   CANADA | 
  Training & Development Specialist - Senior 
Phone: +604-422-2528  |   Fax: +604-420-1591  |   Mobile: +604-505-0291 
Email: jarmo.venalainen at schneider-electric.com  |   Site: www.SEsolar.com 
|   Address: 3700 Gilmore Way, Burnaby, BC V5G4M1 


*** Please consider the environment before printing this e-mail 




From:
Christopher Warfel <cwarfel at entech-engineering.com>
To:
re-wrenches at lists.re-wrenches.org, 
Date:
01/23/2015 12:07 PM
Subject:
[RE-wrenches] Schneider 6048 power output fluctuating widely
Sent by:
"RE-wrenches" <re-wrenches-bounces at lists.re-wrenches.org>



We installed a XW 6048 that has wide power output fluctuations over 
several seconds. Lights flicker, and the inverter squeals. It happens 
multiple times in a minute  The inverter was replaced to no avail.  I 
suspect the local utility's poor line maintenance. When the inverter 
begins to drop off line, the voltage sags from 123 to 117.  This is 
still within normal parameters, so I don't understand why the inverter 
would begin to power down.  Here is a youtube video of it if anyone has 
ever seen this before. Schneider has assisted us several times, but 
cannot find any reason for this happening as a result of their technology.

http://youtu.be/EqMwv44p-lc


http://youtu.be/ADaL-gEbj4w


Thank you, Chris
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