ABB Relion 670 series - Page 45

22.2.14 Optical ethernet module (OEM).................................................................................................. 1323
22.2.14.1 Introduction................................................................................................................................. 1323
22.2.14.2 Functionality................................................................................................................................ 1323
22.2.14.3 Design............................................................................................................................................1323
22.2.14.4 Technical data..............................................................................................................................1324
22.2.15 Line data communication module (LDCM)............................................................................... 1324
22.2.15.1 Introduction................................................................................................................................. 1324
22.2.15.2 Design............................................................................................................................................1325
22.2.15.3 Technical data..............................................................................................................................1326
22.2.16 Galvanic X.21 line data communication (X.21-LDCM).............................................................. 1326
22.2.16.1 Introduction................................................................................................................................. 1326
22.2.16.2 Design........................................................................................................................................... 1326
22.2.16.3 Functionality................................................................................................................................ 1328
22.2.16.4 Technical data..............................................................................................................................1329
22.2.17 GPS time synchronization module (GTM)................................................................................. 1329
22.2.17.1 Introduction................................................................................................................................. 1329
22.2.17.2 Design........................................................................................................................................... 1329
22.2.17.3 Monitored data........................................................................................................................... 1330
22.2.17.4 Technical data............................................................................................................................. 1330
22.2.18 GPS antenna....................................................................................................................................1330
22.2.18.1 Introduction................................................................................................................................. 1330
22.2.18.2 Design........................................................................................................................................... 1330
22.2.18.3 Technical data..............................................................................................................................1332
22.2.19 IRIG-B time synchronization module IRIG-B..............................................................................1332
22.2.19.1 Introduction................................................................................................................................. 1332
22.2.19.2 Design............................................................................................................................................1332
22.2.19.3 Settings.........................................................................................................................................1333
22.2.19.4 Technical data..............................................................................................................................1333
22.3 Dimensions.......................................................................................................................................... 1334
22.3.1 Case without rear cover................................................................................................................1334
22.3.2 Case with rear cover...................................................................................................................... 1336
22.3.3 Flush mounting dimensions........................................................................................................ 1338
22.3.4 Side-by-side flush mounting dimensions................................................................................. 1339
22.3.5 Wall mounting dimensions.......................................................................................................... 1340
22.3.6 External resistor unit for high impedance differential protection......................................1340
22.3.7 External current transformer unit...............................................................................................1342
22.4 Mounting alternatives....................................................................................................................... 1342
22.4.1 Flush mounting...............................................................................................................................1342
22.4.1.1 Overview....................................................................................................................................... 1342
22.4.1.2 Mounting procedure for flush mounting............................................................................... 1343
22.4.2 19” panel rack mounting...............................................................................................................1344
22.4.2.1 Overview....................................................................................................................................... 1344
22.4.2.2 Mounting procedure for 19” panel rack mounting...............................................................1345
Table of contents
39
Technical manual