IEEE 1547 was Xantrex versus Sunny Boy [RE-wrenches]

[EH Roy]

Matt,

Actually SMA told me that the ground connection on the AC side of the SMA is
more than just an equipment ground - it provides a reference for inverter
electronics and transformer. You would think that to be adequate, but so
far, the NY utilities aren't convinced. Yes, the f word is being used
frequently.

I believe there were some wrench list participants involved with IEEE 1547 -
I'd like to hear their take on this. Kent? Bill Brooks? Others?

E. H. Roy
Solar Works Inc.
64 Main Street
Montpelier, VT 05602
802 223-7804 x306
ehroy at solar-works.com


-----Original Message-----
From: Matt Tritt [mailto:solarone at charter.net]
Sent: Thursday, August 14, 2003 2:40 PM
To: RE-wrenches at topica.com
Subject: RE: Xantrex versus Sunny Boy [RE-wrenches]


EH,

I don't remember hearing about this requirement either, on this list or
anywhere else. Are there more surprises in 1547, or is this the only big
one? I'm under the impression that the (f)utilities get their neutral by
a ground at each service transformer pole or vault. Since the SB has a
ground connection at the AC breaker box, and the neutrals are bonded to
ground in that box, isn't that a reference to neutral anyway?

MattT

-----Original Message-----
From: EH Roy [mailto:ehroy at solar-works.com]
Sent: Thursday, August 14, 2003 11:15 AM
To: RE-wrenches at topica.com
Subject: RE: Xantrex versus Sunny Boy [RE-wrenches]


Matt,

Thanks for the idea. I am worried about transformer losses and costs, so
going to a SB1800 with fewer modules may be a better option in this
particular case. I was surprised not to have heard something about the
IEEE
1547 issue before being nailed by the utilities - did I miss something
on
the wrench list?

E. H. Roy
Solar Works Inc.
64 Main Street
Montpelier, VT 05602
802 223-7804 x306
ehroy at solar-works.com


-----Original Message-----
From: Matt Tritt [mailto:solarone at charter.net]
Sent: Thursday, August 14, 2003 1:39 PM
To: RE-wrenches at topica.com
Subject: RE: Xantrex versus Sunny Boy [RE-wrenches]


EH,

We did a three phase SunnyBoy install that we thought was going to
require an isolation transformer for this very reason. I turned out not
to be needed in our case, but could that method work for you?

Matt T

-----Original Message-----
From: EH Roy [mailto:ehroy at solar-works.com]
Sent: Thursday, August 14, 2003 9:53 AM
To: RE-wrenches at topica.com
Subject: RE: Xantrex versus Sunny Boy [RE-wrenches]


Wrenches,

And you thought this thread was dead.

I have learned something in the last week or so that may enter into
these
considerations. Apparently a new interconnection standard was approved a
couple months ago - IEEE 1547. New York utilities are using it to
prevent us
from connecting single phase inverters, like the Sunny Boy, to 3-phase
service (208 VAC). Something about no reference to neutral. I must
confess
that I have not had a chance to find or read IEEE 1547 yet, so I stand
to be
corrected on what it requires.

This is really biting us on a 50-school project in NY. Others having
similar
problems? Can someone from SMA address this issue and provide some
clarification? I know you guys have written a nice document on
connecting
Sunny Boy Inverters to 3-phase service (prior to IEEE 1547). Any input
on
this? Kent? John B.?

Thanks,

E. H. Roy
Solar Works Inc.
64 Main Street
Montpelier, VT 05602
802 223-7804 x306
ehroy at solar-works.com


________________________________________________________________

- - - -
To send a message: RE-wrenches at topica.com

Archive of previous messages: http://www.topica.com/lists/RE-wrenches/

List rules & etiquette: http://www.mrsharkey.com/wrenches/etiquete.htm

Check out participant bios: www.mrsharkey.com/wrenches/index.html

Hosted by Home Power magazine

Moderator: michael.welch at homepower.com

- - - -
To send a message: RE-wrenches at topica.com

Archive of previous messages: http://www.topica.com/lists/RE-wrenches/

List rules & etiquette: http://www.mrsharkey.com/wrenches/etiquete.htm

Check out participant bios: www.mrsharkey.com/wrenches/index.html

Hosted by Home Power magazine

Moderator: michael.welch at homepower.com

- - - -
To send a message: RE-wrenches at topica.com

Archive of previous messages: http://www.topica.com/lists/RE-wrenches/

List rules & etiquette: http://www.mrsharkey.com/wrenches/etiquete.htm

Check out participant bios: www.mrsharkey.com/wrenches/index.html

Hosted by Home Power magazine

Moderator: michael.welch at homepower.com

- - - -
To send a message: RE-wrenches at topica.com

Archive of previous messages: http://www.topica.com/lists/RE-wrenches/

List rules & etiquette: http://www.mrsharkey.com/wrenches/etiquete.htm

Check out participant bios: www.mrsharkey.com/wrenches/index.html

Hosted by Home Power magazine

Moderator: michael.welch at homepower.com

- - - -
To send a message: RE-wrenches at topica.com

Archive of previous messages: http://www.topica.com/lists/RE-wrenches/

List rules & etiquette: http://www.mrsharkey.com/wrenches/etiquete.htm

Check out participant bios: www.mrsharkey.com/wrenches/index.html

Hosted by Home Power magazine

Moderator: michael.welch at homepower.com

- - - -
To send a message: RE-wrenches at topica.com

Archive of previous messages: http://www.topica.com/lists/RE-wrenches/

List rules & etiquette: http://www.mrsharkey.com/wrenches/etiquete.htm

Check out participant bios: www.mrsharkey.com/wrenches/index.html

Hosted by Home Power magazine

Moderator: michael.welch at homepower.com
--^----------------------------------------------------------------
This email was sent to: michael_welch at sbcglobal.net

EASY UNSUBSCRIBE click here: http://topica.com/u/?bz8Qcs.bz9JC9.bWljaGFl
Or send an email to: RE-wrenches-unsubscribe at topica.com

TOPICA - Start your own email discussion group. FREE!
http://www.topica.com/partner/tag02/create/index2.html
--^----------------------------------------------------------------