Relays 101 (expanded from the original "Relays 101 Part 1") is a booklet published to PDF.

The topics presented on the printed page are most of the topics presented in the 3-day seminar.

Click here to see the Table of Contents from Relays 101 Part 1 and the test that this booklet can prepare you for. 

Half of the booklet is a printing of the topics presented in the Relay Training Center Software.

This booklet covers topics that every protective relay technician wants to know.

There are plenty of engineering books and manuals about protective relays. Most of them require advanced degrees to understand the topics presented.

This booklet is written by a relay tech for relay technicians. No degrees required. The only prerequisite is high school Trigonometry and Ohm's Law! 

This is the start of your new understanding of protective relays.