Re: [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@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 E-Mail: rsc...@kaco-newenergy.com Visit KACO at CANSIA in Toronto, booth #1026 Tell us why you ♥ PV Follow us on Twitter Read the latest KACO news: The Sunny Lounge 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.

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