We have done two XW systems, one off-grid with a generator. The
generator is a 1970's-era Onan 12.5JC, a lovely beast of a workhorse
with 18,000 hours on it. The point of describing it is that this is
about as basic an analog control as is available. AC output voltage
on the unit was around 114 VAC, slightly low. Frequency was right
on. The XW would not latch to it, although the minimum AC2 in
acceptable voltage was at the default setting, I believe 108V AC.
Reducing the minimum AC2 in to round 100V cured the problem and it
charged.
From the number of responses to William's post, there may be a
serious incompatibility issue with the XW's genstart/charging
firmware, that shows up in different ways as different problems. I'd
like to hear from Schneider about this.
Allan
Allan Sindelar
[email protected]
NABCEP Certified Photovoltaic
Installer
NABCEP Certified Technical Sales Professional
New Mexico EE98J Journeyman Electrician
Positive Energy, Inc.
3201 Calle Marie
Santa Fe, New Mexico 87507
505 424-1112
www.positiveenergysolar.com
On 9/9/2011 7:55 AM, Jesse Dahl wrote:
I had a similar problem with the same type system. When the
generator would be called for it would turn on and the XW would
reject it. This is also a Y2K system. It would work fine if
the generator was started manually. When I put a power quality
meter on the generator output I got really wild freq. readings.
This LP generator has
7000 hours on it and the customer bought it on-line from who
knows where.
Jesse
Sent from my iPhone
Friends:
Working yesterday on a newer XW system with a new Kohler RES15
generator. This is the first time I have tested the inverter
with
this generator. The inverter would not maintain a transfer to
the
generator. After about an hour on the phone with tech
support, the
tech searched previous calls and announced that there is a
known
incompatibility between the Kohler RES15 and a certain version
of the XW
firmware. I was advised to upgrade the firmware.
I wonder how this can be. Voltage and frequency even in the
moment
the inverter did try to connect are well within
specifications. After
some thought, all I can guess is that there might be some
noise on the AC
signal that the inverter might reject.
Has anyone else experienced this? Any insight to be
offered?
Thanks in advance.
William Miller
William Miller
Miller Solar
Voice :805-438-5600
email: [email protected]
http://millersolar.com
License No. C-10-773985
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