Overcurrent Protection Fundamentals

Protecting relays against high current was the earliest relay protection mechanism developed. From this basic method, the graded overcurrent relay protection system, a discriminative short circuit protection, has been formulated.

This course is provides an overview of overcurrent protection fundamentals. It presents coordination technique, rules for time/current grading, IDMT overcurrent protection curves, grading relay-relay, fuse-fuse and fuse-relay, protection relay connections, directional protection and ground fault protection.

Once you complete your course review, you need to take a multiple-choice quiz consisting of forty (40) questions to earn 5 PDH credits

Learning Objectives

This course is intended to provide you with the following specific knowledge and skills:

Rules for time/current grading
IDMT overcurrent protection curves
Grading relay-relay, fuse-fuse and fuse-relay
Protection relay connection
Directional protection
Ground fault protection

Download the Course to review and begin earning your PDH credits.

We provide technical courses for PDH credits that meet Board requirements for Professional Engineers, Geologists and Land Surveyors. This courses is guaranteed to be accepted in AK, AL, AR, FL, GA, IA, IL, ID, IN, KS, KY, MD, ME, MI, MN, MO, MS, MT, NC, ND, NE, NH, NJ, NM, NV, NY, OH, OK, OR, PA, SC, SD, TN, TX, UT, VA, VT, WI, WV, and WY. Before purchasing this course, please confirm that your state Board is listed above.