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SMA Solar's Transformerless Inverter Provides Power During Outages

Ed Gunther [Orlando, Florida USA]

From Solar Light Flashes: SPI12 Edition

Sunny Boy TL-US Inverter

SMA Solar Technology AG (ETR:S92) will begin limited shipments of the transformerless Sunny Boy 3000/4000/5000TL-US-22 inverter series for 3 to 5 kiloWatt rated AC power PV systems in 4Q12. The TL-US series has added a unique Emergency Power Supply feature providing daytime power to a dedicated power socket in the event of a grid power outage. The power socket is isolated from the grid during the outage and supplies up to 12 Amps so long as the PV system is generating. Grid tied inverters without battery storage support are supposed to shutdown during grid power outages to prevent islanding. SMA developed the feature in accordance with solar inverter specifications required to enter the Japanese market after the Fukushima Daiichi nuclear disaster.

From Solar Light Flashes: SPI12 Edition

The TL-US series integrate DC AFCI (Arc-Fault Circuit Interrupter) protection meeting the requirements of National Electrical Code – NEC 2011 690.11. I was told the TL-US has a revised CEC efficiency of 97% since the preliminary product datasheet was released.

Well, multiple sources have confirmed the SunPower Corporation (NASDAQ:SPWR) Oasis 1.5 MW AC Stations I saw at the 250 MW California Valley Solar Ranch (CVSR) project were sourced from SMA America and manufactured at the Denver manufacturing facility much like those for another vertically integrated utility-scale PV power solutions provider.

From SunPower’s California Valley Solar Ranch (CVSR)

DISCLOSURE: No position in any of the stocks mentioned.

Edgar Gunther is a photovoltaic enthusiast who researches and pens the GUNTHER Portfolio under the Photovoltaic Blogger moniker. The GUNTHER Portfolio is an eclectic collection of niche Blog posts about solar photovoltaic technologies, companies, industry developments, and occasional energy politics sprinkled with insight, analysis, and irreverent commentary.

was posted on AltEnergyStocks.com.

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