7SR21 & 7SR22 Argus Installation Guide
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Chapter 5 Page 1 of 22
7SR21 Non-Directional
7SR22 Directional
Overcurrent Relay
Document Release History
This document is issue
2010/05
The list of revisions up to and including this issue is:
2010/05
Additional Comms modules option of (RS485 + IRIG-B) and (RS232 + IRIG-B) and typographical
revisions
2008/03 First
issue
2008/06
R1a Typographical revisions
2008/07
Second Issue. Software revision 2434H80011R3d-2
2009/09
Third Issue. Software revision 2435H80004/5 R4b-4
Software Revision History
2008/03 2435H800004/5R2c-2b First
Release
2008/07
2434H80011R3d-2
Demand records. Optional DNP3.0 data comms.
2009/09 2435H80004/5
R4b-4 CTS-I Supervision. Undercurrent 37G & 37SEF. Vx U/O Voltage.
46BC U/C. Comms Settings. Waveform Storage Settings. Fault
Storage Settings. Energy Storage. Trip test function. Local/Remote
modes. Settings ranges extended. Protocol changes.
