Photovoltaic DC Arc-Fault Circuit Protection and UL Subject 1699B

These requirements cover DC photovoltaic arc-fault circuit protection devices intended for use in solar photovoltaic electrical energy systems.

This protection is intended to mitigate the effects of arcing faults that may pose a risk of fire ignition under certain conditions if the arcing persists.

Report by Tim Zgonena, Liang Ji, Dave Dini Underwriters Laboratories Inc (UL)