7SR11 & 7SR12 Description Of Operation
The copyright and other intellectual property rights in this document, and in any model or article produced from it
(and including any registered or unregistered design rights) are the property of Siemens Protection Devices
Limited. No part of this document shall be reproduced or modified or stored in another form, in any data retrieval
system, without the permission of Siemens Protection Devices Limited, nor shall any model or article be
reproduced from this document unless Siemens Protection Devices Limited consent.
While the information and guidance given in this document is believed to be correct, no liability shall be accepted
for any loss or damage caused by any error or omission, whether such error or omission is the result of
negligence or any other cause. Any and all such liability is disclaimed.
©2012 Siemens Protection Devices Limited
7SR11 and 7SR12
Description of Operation
Document Release History
This document is issue 2012/02. The list of revisions up to and including this issue is:
2012/02 AC auxiliary power supply added
2012/01 Software Maintenance
2011/06 Software Maintenance
2010/04 Amendments following PLM review
2010/02 Document reformat due to rebrand
2009/09 Format and relay fascia revised.
2009/04 First Issue
Software Revision History
2012/01 7SR11 2436H80003 R2a-2a
7SR12 2436H80004 R2a-2a
Software Maintenance
2011/06 7SR11 2436H80003 R2-2
7SR12 2436H80004 R2-2
Software Maintenance
2009/04 2436H80003R1g-1c 7SR11
2436H80004R1g-1c 7SR12
First Release
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