Contents1. Application...........................................................32. Available functions...............................................54. Functionality.........................................................95. Hardware description.........................................286. Connection diagrams.........................................307. Technical data....................................................388. Ordering.............................................................89DisclaimerThe information in this document is subject to change without notice and should not be construed as a commitment by ABB AB. ABB AB assumesno responsibility for any errors that may appear in this document.© Copyright 2010 ABB AB.All rights reserved.TrademarksABB and Relion are registered trademarks of ABB Group. All other brand or product names mentioned in this document may be trademarks orregistered trademarks of their respective holders.Line differential protection RED670 1MRK 505 188-BEN CPre-configuredProduct version: 1.1 Issued: June 20102 ABB