The first gen of TL's did have a somewhat tight window for the DC window. However, the new SBxxxxTL-US-22 (3kW - 7700kW, with secure power supply) Start Voltage is 125, MPPT is 175-480 (max of 600Vdc)
Also, for larger needs, the STP (12kW - 24kW) start voltage is 150, MPPT is 300-800V (max of 1000Vdc). SMA America, LLC Steve Jefferson Service Line Supervisor 3925 Atherton Ave Rocklin, CA 95765 - 3714 U.S.A. Tel: +1 916 625 3185 (direct) Fax: +1 916 625 0871 Mobile: +1 916 622 4253 Email: steve.jeffer...@sma-america.com<mailto:steve.jeffer...@sma-america.com> www.SMA-America.com<http://www.sma-america.com/> [cid:image001.png@01CF1CFA.FE18BEB0]<http://www.youtube.com/watch?v=yQWzPuyqhzo&feature=youtu.be> This email and any attachments thereto may contain SMA America, LLC confidential, privileged and private material for the sole use of the intended recipient. Any review, copying, or distribution of this email (or any attachments thereto) by others is strictly prohibited. If you are not the intended recipient, please contact the sender immediately and permanently delete the original and any copies of this email and any attachments thereto. Thank you. From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Mark Byington Sent: Tuesday, October 07, 2014 6:59 AM To: RE-wrenches@lists.re-wrenches.org Subject: Re: [RE-wrenches] TL Inverters Just a word of caution to those not having experience with SMA TL inverters - the larger units (7-11 kW) have an extremely narrow input DC voltage window. Depending on your module voltage and string design, all you need is a module or two to be shaded to fall out of the MPPT input voltage range. The smaller units (3-5 kW) with the Secure Power Supply don't have this problem. We no longer use these larger SMA TL inverters unless we can do maximum string length (e.g. strings of 8 for SunPower 96-cell) and there is zero shade at the site. I believe SMA is in the process of adding larger units to the line that has the Secure Power Supply. They added the 6 kW unit earlier this year, and just announced the 7 kW unit with Secure Power Supply. Mark Byington Cobalt Power Systems, Inc.
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