Siemens 7SR210 - Document Release History

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7SR210 & 7SR220 Applications Guide

Document Release History

This document is issue 2011/05.

2011/05 First issue

Page 2 of 40 ©2011 Siemens Protection Devices Limited

Table of Contents

Document Release History2
- Table of Contents3
Section 1: Common Functions5
Section 2: Protection Functions11
Section 3: CT Requirements29
- CT Requirements for Overcurrent and Earth Fault Protection29
  - Overcurrent Protection Cts29
  - Earth Fault Protection Cts29
- CT Requirements for High Impedance Restricted Earth Fault Protection29
Section 4: Control Functions30
- Auto-Reclose Applications30
- Quick Logic Applications33
  - Auto-Changeover Scheme Example33
  - Figure 4.2-1 Example Use of Quick Logic33
Section 5: Supervision Functions34

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