This report presents the theory and application of two ubiquitous protection schemes, overcurrent protection and differential current protection, with the design of experiments and exercises for electrical engineering students. The objective of this undertaking is educational, so that students can learn, understand, and execute various operations pertaining to basic functions of relays. The result is a set of instructions for laboratory practices and exercises (lab manuals) which introduces relays in the context of the greater power system protection, and uses equipment modules to present relay functions.