Micom P634 - Page 11

3.12.9 Multiple Blocking ......................................................................................................................................... 3-89
3.12.10 Multiple Signaling of the Measuring Circuit Monitoring Function .................................................................3-90
3.12.11 Multiple Signaling ........................................................................................................................................3-90
3.12.12 Blocked/Faulty .............................................................................................................................................3-91
3.12.13 Starting Signals and Tripping Logic .............................................................................................................3-91
3.12.14 Time Tagging and Clock Synchronization ....................................................................................................3-95
3.12.15 Resetting Actions .........................................................................................................................................3-96
3.12.16 Assigning Communications Interfaces to Physical Communications Channels ............................................3-98
3.12.17 Test Mode ....................................................................................................................................................3-99
3.13 Parameter Subset Selection (Function Group PSS) ................................................. 3-100
3.14 Self-Monitoring (Function Group SFMON) ................................................................3-102
3.14.1 Tests During Start-up ................................................................................................................................ 3-102
3.14.2 Cyclic Tests ................................................................................................................................................3-102
3.14.3 Signals .......................................................................................................................................................3-102
3.14.4 Device Response .......................................................................................................................................3-103
3.14.5 Monitoring Signal Memory .........................................................................................................................3-104
3.14.6 Monitoring Signal Memory Time Tag .........................................................................................................3-104
3.15 Operating Data Recording (Function Group OP_RC) ............................................... 3-105
3.16 Monitoring Signal Recording (Function Group MT_RC) ............................................3-106
3.17 Overload Data Acquisition (Function Group OL_DA) ............................................... 3-107
3.17.1 Overload Duration .....................................................................................................................................3-107
3.17.2 Acquiring Measured Overload Data from the Thermal Overload Protection ..............................................3-108
3.18 Overload Recording (Function Group OL_RC) ..........................................................3-109
3.18.1 Start of Overload Recording ......................................................................................................................3-109
3.18.2 Counting Overload Events .........................................................................................................................3-109
3.18.3 Time Tagging .............................................................................................................................................3-109
3.18.4 Overload Logging ...................................................................................................................................... 3-110
3.19 Fault Data Acquisition (Function Group FT_DA) ...................................................... 3-111
3.19.1 Running Time and Fault Duration ..............................................................................................................3-112
3.19.2 Fault Data Acquisition Time .......................................................................................................................3-113
3.19.3 Acquisition of the Fault Currents ............................................................................................................... 3-114
3.19.4 Acquisition of the Differential and Restraining Currents ............................................................................3-115
3.19.5 Fault Data Reset ........................................................................................................................................3-117
3.20 Fault Recording (Function Group FT_RC) ................................................................ 3-118
3.20.1 Start of Fault Recording .............................................................................................................................3-118
3.20.2 Fault Counting ...........................................................................................................................................3-119
3.20.3 Time Tagging .............................................................................................................................................3-119
3.20.4 Fault Recordings ........................................................................................................................................3-120
3.20.5 Fault Value Recording ............................................................................................................................... 3-121
3.21 Differential Protection (Function Group DIFF) ......................................................... 3-123
3.21.1 Enabling or Disabling Differential Protection .............................................................................................3-123
3.21.2 Amplitude Matching ...................................................................................................................................3-124
3.21.3 Vector Group Matching ..............................................................................................................................3-128
3.21.4 Zero-sequence Current Filtering ................................................................................................................3-128
3.21.5 Tripping Characteristics .............................................................................................................................3-132
3.21.6 Rapid (high-set) Differential Protection ..................................................................................................... 3-134
3.21.7 Inrush Stabilization (2nd Harmonic Restraint) ...........................................................................................3-136
3.21.8 Overfluxing Stabilization (5th Harmonic Restraint) ................................................................................... 3-138
3.21.9 Saturation Discriminator ............................................................................................................................3-139
3.21.10 Measured Operating Data of Differential Protection ..................................................................................3-139
3.22 Ground Differential Protection (Function Groups REF_1 to REF_3) ..........................3-141
3.22.1 Enabling or Disabling Ground Differential Protection ................................................................................ 3-141
3.22.2 Blocking ground differential protection ..................................................................................................... 3-141
3.22.3 Amplitude Matching ...................................................................................................................................3-142
Table of Contents
P634
P634/EN M/R-42-A // P634‑311‑653 3