Decoupling Electric Equipment
All electrical equipment attached to your pipeline requires a bond to ground to meet code requirements. However, grounded equipment such as motor-operated valves will short any DC current from cathodic protection systems. Your equipment needs to maintain effective grounding paths for safety, while also maintaining DC isolation so that your CP system can effectively protect against corrosion.
Using a Dairyland product certified for use in a safety grounding conductor is an authorized method of providing DC isolation and simultaneous AC grounding for motors and other equipment eliminating direct bonds that will short-circuit your CP system. In order to properly apply Dairyland products to your system, you’ll need to select a product based on your hazardous location rating, potential for induced AC, and blocking threshold needs for CP voltage.
Decoupling Electric Equipment Guide
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