SMA Transformerless Inverters Now UL-Listed

[Rocklin, CA] Three new transformerless inverters from SMA America have received UL listing for use in North America. This marks the first time that Underwriters Laboratories tested this topology since UL 1741 was revised to include specific transformerless inverter requirements. The line includes the SB8000TL-US, SB9000TL-US and SB10000TL-US, with rated outputs of 8, 9 and 10 kW respectively. The 8 and 9 kW inverters each have a CEC-weighted efficiency of 98%. The 10 kW unit is rated at 97.5%. Weighing in at just 88 pounds, each of the TL-US inverters has an MPPT voltage range of 300–480 Vdc and a maximum input voltage of 600 Vdc. An integrated dc disconnect combines up to six PV source circuits. The products’ single-phase 208 Vac output is well-suited for light commercial applications. Like previous SMA products, the TL-US inverters offer reverse polarity protection and other safeguards. Product release is scheduled for Q4 2010.

SMA America / 916.625.0870 / sma-america.com

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