Introduction

DC arc detection is a critical safety feature in direct current (DC) electrical systems, particularly in photovoltaic (PV) systems, where high voltages can lead to dangerous arc faults. An arc fault occurs when an electrical current jumps across a gap between conductive surfaces, producing intense heat and light that can ignite fires or damage equipment. This presentation explores why DC arc detection is vital, the dangers of DC arcs, how detection systems work, the consequences of not having them, and how they are implemented in compliance with industry standards.

What is DC Arc Detection? DC arc detection is a safety mechanism used in DC electrical systems, such as solar photovoltaic (PV) systems, to identify and mitigate arc faults. An arc fault occurs when an electrical current jumps across a gap between conductive surfaces, creating intense heat and light. This technology is vital for preventing fires and protecting equipment in systems where high DC voltages are present.