[RE-wrenches] UL 1741

[Richard Scott]

Hello Glenn,

The UL1741 standard uses IEEE1547 which gives the following;
(use courier or other fixed width font for best viewing)

Voltage range           Clearing time(s)
(% of base voltage)
----------------------------------------
V < 50                  0.16
50 ? V< 88              2.00
110 < V < 120           1.00
V ? 120                 0.16


DR size Frequency range (Hz)  Clearing time(s)
----------------------------------------------
? 30 kW
--------
 > 60.5                        0.16
< 59.3                        0.16

 > 30 kW
--------
 > 60.5                        0.16
< {59.8 -- 57.0}               Adjustable 0.16 to 300
(adjustable set point)
< 57.0                        0.16

Sincere regards,
Richard Scott
KACO New Energy

On 12/16/2010 5:52 PM, Glenn Burt wrote:
>
> Does anyone have the text of UL 1741 and can tell me how much time is 
> allowed for disconnect when loss of utility grid happens?
>
> I am thinking between 2-5 cycles?
>
> Thanks,
>
> Glenn Burt
>
>
> _______________________________________________
> List sponsored by Home Power magazine
>
> List Address: RE-wrenches at lists.re-wrenches.org
>
> Options&  settings:
> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>
> List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
>
> List rules&  etiquette:
> www.re-wrenches.org/etiquette.htm
>
> Check out participant bios:
> www.members.re-wrenches.org
>

-- 
Sincere Regards,

*Richard Scott*
Product Development Manager
KACO new energy, Inc.
Grass Valley, CA Office
(T) (866)-522-6765 x106
(F) (530)-477-5995
Web: www.kaco-newenergy.com <http://www.kaco-newenergy.com>
E-Mail: rscott at kaco-newenergy.com <mailto:rscott at kaco-newenergy.com>

Visit KACO at CANSIA in Toronto 
<http://www.cansia.ca/solar-conference/solar-canada-2010-conference-exposition>, 
booth #1026
Tell us why you ? PV <http://iheartpv.com/>
Follow us on Twitter <https://twitter.com/KACOnewenergy>
Read the latest KACO news: The Sunny Lounge 
<http://www.kaco-newenergy.blogspot.com/>
The information contained in this message may be privileged,
confidential, and protected from disclosure. If the reader of this
message is not the intended recipient, or any employee or agent
responsible for delivering this message to the intended recipient,
you are hereby notified that any dissemination, distribution, or
copying of this communication is strictly prohibited. If you have
received this communication in error, please notify us immediately
by replying to the message and deleting it from your computer.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20101216/950f8a3e/attachment-0004.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: kaco_logo.png
Type: image/png
Size: 4726 bytes
Desc: not available
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20101216/950f8a3e/attachment-0007.png>