Siemens 7SG163 Ohmega 300 Series Quick Start Manual page 2

Contents
1 Introduction. ...................................................................................................................................... 3
2 DEF Direction and Characteristic Angle. ........................................................................................ 3
2.1 DEF Schemes ........................................................................................................................... 4
2.1.1 DEF Direct Trip ................................................................................................................. 4
2.1.2 DEF POR .......................................................................................................................... 4
2.1.2.1 Current Reversal Guard ................................................................................................ 4
2.1.2.2 CB Echo ........................................................................................................................ 4
3 Relay Settings.................................................................................................................................... 5
3.1 DEF Auxiliary Protection Settings. ............................................................................................ 5
3.2 DEF Protection Status Inputs.................................................................................................... 5
3.3 DEF Protection Outputs ............................................................................................................ 5
©2010 Siemens Protection Devices Ltd
7SG163 Ohmega 300 Series SingleDEF
Chapter 12 Page 2 of 5