White papers: Dairyland Electrical Industries
Dairyland Electrical Industries is the world’s leading manufacturer of solid-state decoupling products used to isolate cathodically protected structures from grounding systems or other equipment, while simultaneously providing safety grounding for AC fault current and lightning.
At Dairyland, it’s not just about selling rugged products. We pride ourselves on being a reliable resource for complete technical guidance on applications relating to isolation, grounding, over-voltage protection and related issues. Our values-driven culture and commitment to continual improvement position Dairyland to continue to deliver the exceptional product quality and service our customers around the world have come to expect.
Over-Voltage Protection: The Critical Differences Between Spark Gaps and DC Decouplers
This paper provides an overview of why over-voltage protection on isolation joints is needed, as well as a brief description of the two most common protection technologies – spark gaps and solid-state DC decouplers.
Published on the 01 October 2025
DC Decoupling from Utility Grounding Systems
This paper provides specific information on decoupler installation to solve facility CP problems, including connections, possible bypasses, practices, and codes.
Published on the 19 May 2023