Table of contentsSection 1 Introduction.......................................................................7This manual........................................................................................7Intended audience..............................................................................7Product documentation.......................................................................8Product documentation set............................................................8Document revision history.............................................................9Related documentation................................................................10Document symbols and conventions................................................10Safety indication symbols............................................................10Document conventions................................................................11Functions, codes and symbols....................................................11Section 2 REF615 overview...........................................................15Overview...........................................................................................15Product version history................................................................16PCM600 and IED connectivity package version..........................16Operation functionality......................................................................16Standard configurations...............................................................16Optional functions........................................................................18Physical hardware............................................................................19LHMI.................................................................................................21LCD.............................................................................................21LEDs............................................................................................22Keypad........................................................................................22WHMI................................................................................................23Authorization.....................................................................................24Communication.................................................................................25Section 3 REF615 variants.............................................................27REF615 variant list...........................................................................27Presentation of standard configurations...........................................27Standard configurations...............................................................28Connection diagrams...................................................................31Standard configuration A including directional earth-faultprotection..........................................................................................34Applications.................................................................................34Functions.....................................................................................35Default I/O connections..........................................................36Functional diagrams....................................................................36Functional diagrams for protection.........................................37Table of contentsREF615 1Application Manual