Direct current (DC) circuit protection | Eaton PSEC

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Compared to alternating current (AC), direct current (DC) flows consistently in one direction therefore it requires additional mechanisms to safely interrupt circuits. Christy McElhinny, Field Application Engineer, explains the critical role DC circuit protection has within energy transition applications, which inherently use DC energy. This is especially true as energy transition applications such solar (also referred to as photovoltaic (PV) systems), battery storage, and wind generation are projected to increase in adoption. Though DC circuit protection has overlap in ratings familiar with AC systems, there also unique requirements of DC circuit protection within electrical vehicles (EV), EV chargers, energy storage, and PV systems. Christy also explains how a PV system is designed and operates by following a PV schematic. Also, the different design options that can be engineered and at which point DC circuit protection is required to be installed. Thank you for watching one of our many educational videos on the topic of power systems. Schedule a visit to one of Eaton's Power Systems Experience Centers in either Pittsburgh or Houston to learn more! To learn more about Eaton products and our Power Systems Experience Centers: http://eaton.com/experience To view more educational videos from Eaton's Power Systems Experience Centers: http://videos.eaton.com/experience Chapters 00:00 00:12 Intro 01:41 Why do energy transition applications use DC 03:06 Photovoltaic system design 04:50 Comparing DC and AC circuit protection 06:36 AC coupled PV system 07:21 DC coupled PV system 07:58 Reverse DC coupled PV system 08:33 Eaton DC protective devices and assemblies #electricalengineering #electricity #powersystem #engineering #eatonexperience #experiencecenter #powerdistribution #utility #energytransition #electricalsafety