Solar Builder

JAN 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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SOLARBUILDERMAG.COM | 29 Proactive service solution SMA is kicking off 2018 with a new and improved Power+ Solution 2.0, which builds on last year's intriguing MLPE solution to provide even more speed and simplicity. One of the most signifi- cant improvements to the next generation Power+ Solution is a major reduction in system components within a new rooftop com- munication kit. This means faster installation, fewer potential points of failure throughout the system and less equipment to service. Additionally, a single plug-and-play communication connection speeds installation and reduces labor. The new Power+ Solution offers 50 percent faster commissioning within Sunny Portal. The solution also features SMA Smart Connected, a proactive service solution that can decrease truck rolls, lengthy service calls and system downtime, saving installers time and money and maximizing a homeowner's power production. "For string inverters, we recommend SMA as they are a long-time, reliable, inverter manufacturer. Their recently released optimizer solution is very price competitive and reduces installation time and cost," Kyler says. "SMA and Tigo are competitive with SolarEdge but also more flexible — you don't need optimizers and the MLPE have different levels of function depending on system needs," Leone says. The integrated pair to watch We first caught a glimpse of the new Fronius Symo Advanced at Solar Power International 2017, which was the first inverter out on the market with an integrated Power Line Communication (PLC) transmitter based on the recently published SunSpec Communication Signal for Rapid Shutdown. This industry standard is a multi-vendor and multi-device com- munication specification for inverters, modules and string combiners to support NEC 2014, NEC 2017 and UL 1741 module-level rapid shutdown requirements. Pair this with an all-new, low-profile Fronius Rapid Shutdown Box to meet NEC 2014 (690.12) and NEC 2017 (Array Disconnect) com- pliance, or skip that step and just pair it with modules that include cell- level optimizations like the Maxim chip to accomplish the same thing. "Fronius inverters with Maxim-integrated modules offer the greatest cost-savings and energy production," Schoder says.

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