Hitachi RET670 Commissioning Manual page 17

1MRK 504 165-UEN Rev. K
11.14.10 Function revision history..................................................................................................270
11.14.11 Voltage harmonic monitoring VHMMHAI.........................................................................271
11.14.11.1
11.14.11.2
11.14.12 Function revision history..................................................................................................271
11.14.13 Fault current and voltage monitoring function FLTMMXU .............................................. 272
11.14.13.1
11.14.13.2
11.14.14 Fault locator LMBRFLO...................................................................................................272
11.14.14.1
11.14.14.2
11.14.14.3
11.14.14.4
11.15 Metering............................................................................................................................ 274
11.15.1 Pulse-counter logic PCFCNT.......................................................................................... 274
11.15.2 Function for energy calculation and demand handling ETPMMTR................................. 274
11.15.2.1
11.15.2.2
11.16 Station communication...................................................................................................... 275
11.16.1 Multiple command and transmit MULTICMDRCV / MULTICMDSND..............................275
11.17 Remote communication.....................................................................................................276
11.17.1 Binary signal transfer.......................................................................................................276
11.18 Basic IED functions........................................................................................................... 277
11.18.1 Parameter setting group handling SETGRPS................................................................. 277
11.18.1.1
11.18.1.2
11.19 Exit test mode....................................................................................................................278
Section 12 Primary injection testing...........................................................................279
12.1 Transformer Voltage Control ATCC...................................................................................279
12.1.1 Load drop compensation function, LDC.......................................................................... 279
12.1.2 Voltage control of Parallel Transformers......................................................................... 280
12.1.3 Minimum Circulating Current (MCC) method.................................................................. 281
12.1.4 Master Follower (MF) method......................................................................................... 282
12.1.5 Completing the test......................................................................................................... 283
Section 13 Checking the directionality.......................................................................285
13.1 Overview........................................................................................................................... 285
13.2 Testing the directionality of the distance protection...........................................................285
Section 14 Commissioning and maintenance of the fault clearing system............287
14.1 Commissioning tests......................................................................................................... 287
14.2 Periodic maintenance tests............................................................................................... 287
14.2.1 Visual inspection............................................................................................................. 288
14.2.2 Maintenance tests........................................................................................................... 288
14.2.2.1
14.2.2.2
Transformer protection RET670
Commissioning manual
Verifying the signals and settings...............................................................................271
Completing the test.................................................................................................... 271
Verifying the settings.................................................................................................. 272
Completing the test.................................................................................................... 272
Function revision history............................................................................................ 272
Verifying the signals and settings...............................................................................273
Measuring the operate limit........................................................................................273
Completing the test.................................................................................................... 274
Verifying the settings.................................................................................................. 274
Completing the test.................................................................................................... 275
Verifying the settings.................................................................................................. 277
Completing the test.................................................................................................... 277
Preparation.................................................................................................................288
Recording...................................................................................................................288
© 2017 - 2022 Hitachi Energy. All rights reserved
Table of contents
11