Solar Builder

NOV-DEC 2018

Solar Builder focuses on the installation/construction of solar PV systems. We cover the latest PV technology (modules, mounting, inverters, storage, BOS) and equip installers/contractors with tips and tools to make informed purchasing decisions.

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Page 42 of 47

SOLARBUILDERMAG.COM | 43 • ABB • Adesto Technologies • Canadian Solar • Celestica Inc. • Chint Power Systems – North America • Delta Products • Enphase Energy • ER Solar • Fronius International • Ginlong-Solis • Hansol Technics Co. • HiQ Solar • Itek Energy • Ingeteam • JA Solar • LERRI Solar Technology • Maxim Integrated • Mersen Electrical Power • Midnite Solar • Neo Solar Power • Omron Global • OutBack Power • Phoenix Contact • SMA • Samil Power • Seraphim Solar USA • Semitech Semiconductor • Silfab Solar • Solartec • ST Micro • Sungrow • SunPower • Sunrun • Sunpreme • Suntech Power • Talesun Tesla • Texas Instruments • Tigo Energy • UL LLC • Yaskawa Solectrica • Yingli Solar "There are no additional design require- ments to implement shutdown functional- ity. A designer can build a project for maxi- mum energy harvest, optimal ROI, or with any other goal in mind and simply choose the most cost-effective MLPE to address his or her needs. The shutdown functional- ity is built into these solutions and does not impact other project considerations. Installers should also be aware of the upcoming release of UL Standard 3741 as another way to comply with NEC 201 690.12 without requiring module-level shutdown by using equipment listed as 'PV Hazard Control Arrays,'" says Brad Dore, director of marketing for SMA America. SMA's Sunny Tripower CORE1 meets the shutdown requirements of NEC 690.12 when paired with a TS4-R-F mod- ule-level device. The inverter and MLPE retrofit unit operate on the new SunSpec Power Line Communication (PLC) signal for module-level rapid shutdown. This solution is the most cost-effective way to achieve module-level shutdown. The solu- tion operates on a simple "stay alive" signal broadcast from the inverter over the exist- ing DC wires. The TS4-R-F units will operate while AC power is present, and if AC power is cut via the AC disconnect, the MLPEs lose the "stay alive" signal and de-energize in accordance with code. If you're unfamiliar with the SunSpec Alliance, it's time you became familiar. This trade alliance of more than 100 solar and storage stakeholders has been working on information standards for plug-and-play PV system interoperabili- ty, but its communication solution for meeting module-level power control and safety (rapid shutdown) with any panel and inverter combination might be its crowning achievement. Look for the logo to the left to find products certified to the SunSpec RSD Specification. Here's a list of early adopter companies involved in the collaboration and rollout. Make no compromises Watch for SunSpec certification

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