Protection Device for PV Inverters Gains UL1741 Approval

SatCon Technology Corporation (SATC) announced that it is the first provider of high-power, commercial photovoltaic inverters to deliver and install a UL1741-approved ground-fault detection interrupter (GFDI), which is designed to cut costs for installers of photovoltaic (PV) systems.

The purpose of the GFDI is to detect low levels of ground currents and interrupt any faults within specified limits. GFDI is a key electrical protection feature that will become mandatory for photovoltaic systems under UL1741 by May 7, 2007. The GFDI was developed by SatCon specifically for alternative energy power systems, and in particular photovoltaics, after its market research revealed that there were no commercially available devices that could meet the new standard. To protect SatCon’s innovative GFDI solution, a patent filing was made prior to shipment of the GFDI. “I am pleased to announce that PowerLight Corporation,” said Clemens van Zeyl, President of SatCon’s Power Systems Division, “was the first to install the UL1741 approved GFDI.” “Over the past year, we have worked closely with SatCon to install over 3 MWs of their inverters at PowerLight projects,” said Daniel Shugar, PowerLight President. “SatCon’s ground fault detection interrupter does significantly reduce our installation costs.”
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