Solar Builder

JUL-AUG 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.

Issue link: http://digital.solarbuildermag.com/i/992843

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SOLARBUILDERMAG.COM | 17 It will always go into wind hold (high wind speed shutdown where the tracker goes f lat to survive hurricane force winds) since all controls are run off the 24-volt DC battery backup. The batteries are charged from the tracker PV modules with redundant chargers on two PV strings. The inverter is mounted lower down on the mast for improved accessibility and wiring. Gen 4 also allows installation of the inverter in locations away from the tracker, which is cool when using a larger three-phase string inverter for combining two to three trackers. Software For Generation 3, AllEarth Renewables used a modular approach on the circuit board designs for easier installation and removal in the unlikely event of a board failure. According to Seth Maciejowski, embedded systems engineer, on the inter- net gateway they use a "call in only" architecture that makes installation on most customers' networks simple and avoids complicated TCP/IP configuration. "The fourth generation tracker integrates the communications functions into the tracker using cellular and WiFi technology to put more performance and debugging information into the hands of customers and dealers, and it more closely ties systems to our BRIGHT solar monitoring solution," Maciejowski says. "We've moved to a quieter electric drive system for both yaw and tilt actuators to provide variable speed operation and battery backup for grid outages and off grid applications. Through proprietary hardware, we are able to measure DC string power directly, which will be included in the data stream provided to the BRIGHT solar monitoring solution." Chris Crowell is the managing editor of Solar Builder. OMG Roofing Products has introduced PowerGrip Universal for mounting solar racking systems on any type of commercial roof. PowerGrip Universal is designed to reduce or eliminate ballast in solar racking systems, so there's less weight, material handling and labor on the roof. PowerGrip Universal is designed with performance in mind, offering up to 3,300 lbf of tensile strength, 2,500 lbf of shear strength and 2,000 lbf of compressive strength. It's one of the strongest anchors on the mar- ket. Made of heavy-duty cast aluminum, PowerGrip Universal is easy to install, saving time and labor when compared to alternatives. The system transfers the load to the structural roof deck and does not require any membrane welding. Booth 9326 INTERSOLAR PREVIEW OMG Roofing Products' new PowerGrip Universal

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