Description Of Operation - Siemens 7SR12 Argus Manual

7SR11 and 7SR12

Description of Operation

Document Release History
This document is issue 2017/05. The list of revisions up to and including this issue is:
2017/05 Universal PSU introduced. Clauses added to suit IEC 60255-27
2017/04 Universal PSU introduced and Software maintenance
2017/02 Minor mods. General pickup added, Fibre Optic safety note added
2015/12 Minor error corrected, 50LC diagram showed directional inputs
2015/08 Additional software features added.
2015/06 Software Version added. No changes to document
2014/12 Minor modifications and corrections
2014/10 Addition of optional IEC 61850 communication protocol.
2013/09 Software Maintenance
2013/01 Software Maintenance
2012/02 AC auxiliary power supply added
2012/01 Software Maintenance
2011/06 Software Maintenance
2010/04 Amendments following technical review
2010/02 Document reformat due to rebrand
2009/09 Format and relay fascia revised.
2009/04 First Issue
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©2017 Siemens Protection Devices Limited
7SR11 & 7SR12 Description Of Operation