SMA inverter and Sollega racking set now UL-certified as rapid shutdown system

SMA America and Sollega have joined forces to certify the Sollega FastRack 510 with SMA Sunny Tripower CORE1 inverters as the first system on the market to comply with UL 3741 Photovoltaic Hazard Control Systems (PVHCS) and National Electric Code (NEC) 690.12 rapid shutdown of PV systems on buildings without module-level power electronics (MLPE) or switches.

“The FastRack 510 mounting system is made of non-conductive, glass-reinforced nylon polymer material, which reduces the risk of shock to firefighters during emergency operations,” said Elie Rothschild, CEO of Sollega. “Wire management is also critical to the overall security of the PV array. Nylon wire clamps work on both our racks and module flanges to secure PV wires with the necessary air gap to ensure wires do not come into contact with the aluminum module frames.”

Testing confirmed firefighter safety was maintained up to 1,000 volts within the array boundary. This finding eliminates the need for module-level trip switches within the array boundary. Conformity for conductors outside the array boundary is achieved by installing the SMA CORE1 inverter within the 1-foot array boundary. Together, the combination of racking and inverter provides significant cost savings, faster installation and better reliability compared to traditional module-level rapid shutdown solutions on the market.

“We are excited to partner with Sollega to bring this solution to market,” said Brett Henning, commercial product manager at SMA America. “Making both code compliance and enhanced security possible without the need for module-level devices will help customers save on system costs and installation labor throughout.”

News item from SMA America

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