Specifications

7SR242 Duobias Settings, Configuration & Instruments Guide

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Limited. No part of this document shall be reproduced or modified or stored in another form, in any data retrieval

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7SR242 Duobias

Multi-Function 2-Winding Transformer Protection Relay

Document Release History

This document is issue 2010/02. The list of revisions up to and including this issue is:

2010/02 Document reformat due to rebrand

2010/02 Third issue. Software revision 2662H80001 R4c-3

2008/07 Second issue. Software revision 2662H80001R3d-2c.

2008/05 First issue

Software Revision History

2010/02 2662H80001 R4c-3 Revisions to: VT ratio settings, 87BD 1

bias slope limit setting

increments, CB fail function, LED CONFIG menu, DATA STORAGE

menu.

Added: Open circuit detection (46BC), CONTROL MODE menu,

Close circuit supervision (74CCS), Measured earth fault undercurrent

(37G), Pulsed output contacts.

2008/07 2662H80001R3d-2c. Demand metering. Optional DNP3.0 data comms.

2008/05 2662H80001R3-2b First Release