1 CHAPTER OVERVIEW
This chapter introduces the principles and theory behind the protection and describes how it is implemented in this
product. Guidance for applying this protection is also provided.
This chapter contains the following sections:
Chapter Overview 135
Introduction 136
Distance Measuring Zones Operating Principles 138
Phase and Earth Fault Distance Protection Implementation 168
Delta Directional Element 176
Distance Isolated and Compensated Systems 179
Application Notes 193
P543i/P545i Chapter 7 - Distance Protection
P54x1i-TM-EN-1 135