ABB RET670 Commissioning Manual page 16

Table of contents
10
Event function EVENT...............................................................267
Fault locator LMBRFLO.............................................................267
Measuring the operate limit.................................................. 268
Completing the test.............................................................. 268
Limit counter L4UFCNT.............................................................268
Completing the test.............................................................. 269
Estimation of transformer insulation life LOLSPTR .................. 269
Verifying the signals and settings.........................................269
Completing the test.............................................................. 271
Metering..........................................................................................271
Pulse-counter logic PCFCNT.................................................... 271
Function for energy calculation and demand handling
ETPMMTR.................................................................................271
Verifying the settings............................................................ 271
Completing the test.............................................................. 272
Station communication................................................................... 273
Multiple command and transmit MULTICMDRCV /
MULTICMDSND........................................................................ 273
Remote communication..................................................................273
Binary signal transfer.................................................................273
Basic IED functions........................................................................ 274
Parameter setting group handling SETGRPS........................... 274
Verifying the settings............................................................ 274
Completing the test.............................................................. 275
Exit test mode.................................................................................275
Section 12 Primary injection testing............................................... 277
Transformer Voltage Control ATCC............................................... 277
Load drop compensation function, LDC.................................... 277
Voltage control of Parallel Transformers................................... 279
Minimum Circulating Current (MCC) method............................ 279
Master Follower (MF) method................................................... 281
Completing the test....................................................................282
Section 13 Checking the directionality........................................... 283
Overview.........................................................................................283
Testing the directionality of the distance protection........................283
Section 14 Commissioning and maintenance of the fault
clearing system............................................................ 287
Commissioning tests...................................................................... 287
Periodic maintenance tests............................................................ 287
Visual inspection........................................................................288
Maintenance tests..................................................................... 288
Preparation...........................................................................288
Transformer protection RET670 2.2 IEC
Commissioning manual