SW firmware upgrade fluorescent flicker [RE-wrenches]

[Mark Edmunds]

Hi Jerry,

At this point I believe there could be some site specific issues at play
here for these pre-GTI SW's, probably due to the impedance of the local
grid.  We tested the new anti-islanding scheme extensively and did not
encounter this issue at any of our beta test sites.  I know Lloyd already
contacted you, and we will continue to help you investigate and remedy the
issue.

Regards,

Mark Edmunds
Xantrex Technology Inc.

-----Original Message-----
From: Jerry Caldwell [mailto:solarcowboy at yahoo.com]
Sent: Thursday, February 19, 2004 5:46 PM
To: RE-wrenches at topica.com
Subject: SW firmware upgrade flourescent flicker [RE-wrenches]


Wrenches,

I have a customer who had his pre-GTI Trace SW
inverters retrofitted with the new anti-islanding
software.  He claims that ever since the upgrade his
flourescent lights powered by the backed up loads
panel have a flicker that pulses about once every
second.  Sometimes the flicker is worse than other
times.

Since the anti-islanding software is supposed to
disconnect and reconnect to the grid once per second,
I can't help but wonder if my customer isn't justified
by blaming the software upgrade.

Has anyone had or heard of similar experiences?  And
better yet, does anyone have ideas to solve this
problem?  I want to keep this customer relationship in
good standing.

Jerry Caldwell
Light Energy Systems
510-205-2798

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