Siemens 7SR242 Manual

Also see for 7SR242 Duobias: Technical manual Commissioning and maintenance guide

Contents

7SR242 Duobias Description Of OperationThe 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 DevicesLimited. No part of this document shall be reproduced or modified or stored in another form, in any data retrievalsystem, without the permission of Siemens Protection Devices Limited, nor shall any model or article bereproduced 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 acceptedfor any loss or damage caused by any error or omission, whether such error or omission is the result ofnegligence or any other cause. Any and all such liability is disclaimed.©2010 Siemens Protection Devices Limited7SR242 DuobiasMulti-Function 2-Winding Transformer Protection RelayDocument Release HistoryThis document is issue 2010/06. The list of revisions up to and including this issue is:2010/06 Additional Comms modules option of (RS485 + IRIG-B) and (RS232 + IRIG-B) and typographicalrevisions2010/02 Document reformat due to rebrand2010/02 Third issue. Software revision 2662H80001 R4c-32008/07 Second issue. Software revision 2662H80001R3d-2c.2008/05 First issueSoftware Revision History2010/02 2662H80001 R4c-3 Revisions to: VT ratio settings, 87BD 1 st bias slope limit settingincrements, CB fail function, LED CONFIG menu, DATASTORAGE menu.Added: Open circuit detection (46BC), CONTROL MODEmenu, Close circuit supervision (74CCS), Measured earth faultundercurrent (37G), Pulsed output contacts.2008/07 2662H80001R3d-2c. Demand metering. Optional DNP3.0 data comms.2008/05 2662H80001R3-2b First Release