
PV Rapid Shutdown and Hazard Control: Safety Requirements and Communication
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This UL white paper identifies key updates and revisions to requirements for PV rapid shutdown systems and explores the future state of communication systems under UL 1741.
Photovoltaic (PV) technology is developing rapidly and we are seeing rooftop solar PV arrays become more commonly installed on residential homes and commercial properties. While PV array equipment is required to be certified for safety from risk of shock and fire, those certifications do not account for all of the specific interactions with firefighters working around the array while fighting a fire. The updated Standard defines requirements for PV rapid shutdown equipment (PVRSE) and PV rapid shutdown systems (PVRSS) to reduce hazards for firefighters while performing their duties on or in buildings with PV arrays.
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PV Rapid Shutdown and Hazard Control: Safety Requirements and Communication