GE 845 Instruction Manual page 5

845 TRANSFORMER PROTECTION SYSTEM - INSTRUCTION MANUAL
Modbus Protocol .....................................................................................................................................4 - 30
DNP 3............................................................................................................................................................4 - 38
DNP / IEC104 Point Lists ......................................................................................................................4 - 42
IEC 60870-5-104 .....................................................................................................................................4 - 45
IEC 60870-5-103 .....................................................................................................................................4 - 47
IEC 61850....................................................................................................................................................4 - 48
Transient Recorder ................................................................................................................................ 4 - 63
Data Logger .............................................................................................................................................. 4 - 66
Fault Reports ............................................................................................................................................ 4 - 69
Flex State.................................................................................................................................................... 4 - 70
Programmable LEDs ............................................................................................................................. 4 - 71
Programmable Pushbuttons............................................................................................................. 4 - 73
Front Panel ................................................................................................................................................ 4 - 76
Display Properties...................................................................................................................................4 - 76
Default Screens........................................................................................................................................4 - 77
Resetting..................................................................................................................................................... 4 - 78
Installation ................................................................................................................................................. 4 - 78
System.................................................................................................................................................4 - 79
Current Sensing....................................................................................................................................... 4 - 80
Voltage Sensing ...................................................................................................................................... 4 - 82
Power Sensing ......................................................................................................................................... 4 - 83
Power System .......................................................................................................................................... 4 - 84
Transformer .............................................................................................................................................. 4 - 85
Transformer Setup .................................................................................................................................4 - 86
Xfmer Status Detection..................................................................................................................... 4 - 111
Thermal Inputs ...................................................................................................................................... 4 - 114
Onload Tap Changer .......................................................................................................................... 4 - 115
Breakers....................................................................................................................................................4 - 120
FlexCurves ...............................................................................................................................................4 - 122
Inputs................................................................................................................................................ 4 - 125
Contact Inputs .......................................................................................................................................4 - 125
Virtual Inputs ..........................................................................................................................................4 - 128
Remote Inputs........................................................................................................................................4 - 130
Outputs ............................................................................................................................................ 4 - 131
Output Relays.........................................................................................................................................4 - 131
Auxiliary Relay selected for breaker Trip .................................................................................. 4 - 133
Aux Relay selected for breaker Close......................................................................................... 4 - 136
Critical Failure Relay #8 .................................................................................................................... 4 - 139
Virtual Outputs.......................................................................................................................................4 - 139
Protection ....................................................................................................................................... 4 - 140
Percent Differential..............................................................................................................................4 - 142
Transformer Overload........................................................................................................................4 - 149
Current Elements..................................................................................................................................4 - 152
Inverse Time Overcurrent Curves................................................................................................. 4 - 152
Percent of Load-To-Trip.................................................................................................................... 4 - 159
Phase Time Overcurrent Protection............................................................................................ 4 - 160
Phase Instantaneous Overcurrent Protection........................................................................ 4 - 163
Phase Directional Overcurrent Protection ............................................................................... 4 - 167
Neutral Time Overcurrent Protection ......................................................................................... 4 - 170
Neutral Instantaneous Overcurrent Protection..................................................................... 4 - 173
Neutral Directional Overcurrent Protection ............................................................................ 4 - 176
Ground Time Overcurrent Protection......................................................................................... 4 - 182
Ground Instantaneous Overcurrent Protection..................................................................... 4 - 185
Ground Directional Overcurrent Protection ............................................................................ 4 - 187
Restricted Ground (Earth) Fault ..................................................................................................... 4 - 191
Negative Sequence Time Overcurrent Protection................................................................ 4 - 197
Negative Sequence Instantaneous Overcurrent Protection ........................................... 4 - 200
TOC-III